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1 Crab = 74 SSC cts/sec

9 May 2008 --

Week 640 results (2008 May 2 - 8)

5 May 2008 --

Week 639 results (2008 April 25 - May 1)

28 April 2008 --

Week 638 results (2008 April 18 - 24)

18 April 2008 --

Week 637 results (2008 April 11 - 17)

  • X0115+634 - declined to about 65 mCrab
  • X0918-548 - was near 20 mCrab for the first half of the week
  • Mkn 421 - ~15 mCrab
  • Cir X-1 - rose to ~110 mCrab
  • X1608-522 - was as strong as ~65 mCrab; individual dwells suggest bursts were seen
  • X1630-472 - ~130 mCrab
  • IGR J17098-3626 - ~30 mCrab
  • SAX J1712.6-3739 - ~30 mCrab
  • IGR J17473-2721 - ~90 mCrab (cf. ATel No. 1468 and others referred to therein)
  • GRS 1747-312 - probably weakened to a level below 15 mCrab
  • SAX J1750.8-2900 - possibly ~20 mCrab
  • XTE J1810-189 - may be near 15 mCrab (cf. ATel Nos. 1446, 1443 and others referred to therein)
  • HETE J1900.1-2455 - ~18 mCrab
  • GRS 1915+105 - was highly variable and strong reaching 2.5 Crab in a few dwells
  • Cyg X-1 - increased to about 300 mCrab; the hardness ratios and intensity show changes over the last 50 days or so that appear to be occurring at the orbital period (5.6 d) and are readily apparent, particularly in HR1, in a time series plot

11 April 2008 --

Week 636 results (2008 April 4 - 10)

  • X0115+634 - declined slowly to roughly 140 mCrab
  • X0918-548 - may have increased to ~20 mCrab
  • Mkn 421 - declined to ~30 mCrab
  • Cir X-1 - below 13 mCrab for the 5 later days of the week
  • X1627-673 - looks to be near 15 mCrab
  • X1630-472 - dropped to about 140 mCrab over the last few days of the week
  • X1705-440 - 260 to 300 mCrab
  • X1730-333 (Rapid Burster) - below 13 mCrab
  • SL1735-269 - possibly as strong as 30 mCrab
  • IGR J17473-2721 - ~40 mCrab (cf. ATel No. 1468)
  • GRS1747-312 - remained near 20 mCrab

7 April 2008 --

Week 635 results (2008 March 28 - April 3)

  • X0115+634 - stayed near 200 mCrab
  • X0656-072 - declined to ~15 mCrab
  • Mkn 421 - in the range 40-65 mCrab
  • Cir X-1 - 130 to 200 mCrab
  • X1608-522 - ~45 mCrab
  • X1630-472 - ~180 mCrab
  • X1730-333 (Rapid Burster) - was below 13 mCrab at the end of the week
  • GRS1747-312 - ~20 mCrab
  • Swift J1753.5-0127 - ~20 mCrab
  • Cyg X-3 - daily averages are in the range 200-270 mCrab

28 March 2008 --

Week 634 results (2008 March 21 - 27)

  • X0115+634 - rose to roughly 170 mCrab
  • X0656-072 - declined to ~30 mCrab
  • Mkn 421 - ~40 mCrab
  • X1145-616 - rose to ~50 mCrab and then dropped below 13 mCrab (cf. ATel No. 1440)
  • Cir X-1 - rose to ~120 mCrab midweek
  • X1630-472 - stll mostly near 200 mCrab
  • IGR J17098-3626 - ~40 mCrab
  • X1730-333 (Rapid Burster) - varying; was as strong as ~50 mCrab
  • SL1746-331 - below ~20 mCrab
  • GRS1747-312 - ~25 mCrab

24 March 2008 --

Week 633 results (2008 March 14 - 20)

  • X0115+634 - rose to ~100 mCrab at the end of the week
  • X0656-072 - 50 to 65 mCrab
  • Mkn 421 - rose to ~45 mCrab
  • Cir X-1 - remains below ~13 mCrab
  • X1608-522 - mostly near 25 mCrab
  • X1627-673 - ~13 mCrab
  • X1630-472 - steady near 200 mCrab
  • IGR J17098-3626 - ~40 mCrab
  • X1730-333 (Rapid Burster) - was as strong as ~60 mCrab

17 March 2008 --

Week 632 results (2008 March 7 - 13)

  • X0115+634 - rose to ~50 mCrab in the last few days of the week and appears to still be on the rise (cf. ATel Nos. 1426, 1427)
  • X0656-072 - ~80 mCrab
  • Mkn 421 - 15 to 20 mCrab
  • X1630-472 - remained near 200 mCrab
  • X1705-440 - rose to ~230 mCrab
  • SAX J1712.6-3739 - ~33 mCrab
  • X1724-307 - ~30 mCrab
  • X1730-333 (Rapid Burster) - ~30 mCrab
  • SL1746-331 - 50 to 80 mCrab
  • Swift J1753.5-0127 - ~20 mCrab
  • HETE J1900.1-2455 - 15 to 30 mCrab
  • Cyg X-3 - ~80 mCrab and the higher-energy spectrum is hard (HR2 has increased to about 3)

10 March 2008 --

Week 631 results (2008 February 29 - March 6)

  • X0656-072 - rose to ~70 mCrab
  • Cen A - ~13 mCrab
  • X1323-619 - rose to ~13 mCrab
  • Cir X-1 - still is below 15 mCrab
  • X1553-542 - below 13 mCrab
  • X1608-522 - ~60 mCrab
  • X1630-472 - was mostly near 200 mCrab
  • IGR J17098-3626 - ~50 mCrab
  • SAX J1712.6-3739 - is relatively strong at ~30 mCrab
  • X1724-307 - ~33 mCrab
  • X1730-333 (Rapid Burster) - daily averages were in the range 30 to 70 mCrab
  • SL1746-331 - ~70 mCrab
  • HETE J1900.1-2455 - ~25 mCrab

29 February 2008 --

Week 630 results (2008 February 22 - 28)

  • X0512-401 - still ~13 mCrab
  • X0656-072 - was as strong as 40 mCrab
  • X1553-542 - appears to be slowly declining in strength and was ~5 to 10 mCrab
  • X1630-472 - remained just over 200 mCrab
  • X1705-440 - rose to almost 200 mCrab
  • IGR J17098-3626 - 40 to 50 mCrab
  • SAX J1712.6-3739 - could be 10 to 30 mCrab
  • X1730-333 (Rapid Burster) - rose to ~65 mCrab
  • SL1746-331 - 50 or 60 mCrab
  • Swift J1753.5-0127 - ~20 mCrab

22 February 2008 --

Week 629 results (2008 February 15 - 21)

  • X0512-401 - may have risen to ~15 mCrab
  • Cen A - ~13 mCrab
  • Cir X-1 - still below 15 mCrab
  • X1553-542 - roughly 13 mCrab
  • X1630-472 - remained close to 200 mCrab
  • X1705-440 - rose to ~100 mCrab
  • RX J1709.5-2639 - was certainly below 15 mCrab in the last half of the week
  • IGR J17098-3626 - roughly 40 mCrab
  • H1743-322 - below 20 mCrab
  • Swift J1753.5-0127 - ~25 mCrab
  • HETE J1900.1-2455 - may be near 25 mCrab
  • Cyg X-3 - daily average intensities dropped to ~70 mCrab

20 February 2008 --

Week 628 results (2008 February 8 - 14)

  • X0656-072 - 10 to 15 mCrab
  • Mkn 421 - ~30 mCrab
  • Cir X-1 - below 15 mCrab
  • X1553-542 - perhaps still 15 to 20 mCrab
  • X1608-522 - mostly near 40 to 50 mCrab
  • X1630-472 - is still near 200 mCrab
  • Swift J1753.5-0127 - roughly 25 mCrab

11 February 2008 --

Week 627 results (2008 February 1 - 7)

  • X0656-072 - still (just) above 13 mCrab
  • Mkn 421 - 13 to 30 mCrab (mostly on the low end of this range)
  • X1630-472 - still near 200 mCrab
  • RX J1709.5-2639 - below ~25 mCrab (data quality is not great)
  • IGR J17098-3626 - ~80 mCrab
  • H1743-322 - below 40 mCrab

4 February 2008 --

Week 626 results (2008 January 25 - 31)

  • X0656-072 - ~13 mCrab
  • X1323-619 - rose to ~25 mCrab
  • Cir X-1 - < 15 mCrab
  • X1553-542 - roughly 20 mCrab
  • X1608-522 - rose slowly to ~65 mCrab
  • X1630-472 - remained near 200 mCrab
  • H1743-322 - 10 to 60 mCrab (data quality is not great)

25 January 2008 --

Week 625 results (2008 January 18 - 24)

  • Mkn 421 - ~20 mCrab
  • Cir X-1 - below 15 mCrab
  • X1553-542 - still near 25 mCrab
  • X1630-472 - roughly 230 mCrab
  • H1743-322 - ranged from ~130 down to ~60 mCrab

18 January 2008 --

Week 624 results (2008 January 11 - 17)

  • X0656-072 - likely was above 15 mCrab for a few days
  • Sigma Gem - possibly is varying with peaks above 15 mCrab in 1-day averages
  • EXO 0748-676 - may be rising above 15 mCrab
  • Cir X-1 - still < ~15 mCrab
  • X1553-542 - still roughly 25 mCrab
  • X1608-522 - ~50 mCrab
  • X1630-472 - ~200 mCrab
  • RX J1709.5-2639 - roughly 40 mCrab
  • X1730-333 (Rapid Burster) - may still be active, but the data are not of high quality
  • H1743-322 - ~100 mCrab

14 January 2008 --

Week 623 results (2008 January 4 - 10)

  • X0656-072 - reached ~40 mCrab for a few days
  • Mkn 421 - 20 to 25 mCrab
  • Cir X-1 - below 15 mCrab
  • X1553-542 - ~25 mCrab
  • X1608-522 - roughly 50 mCrab
  • X1630-472 - rose slowly to ~200 mCrab
  • RX J1709.5-2639 - roughly 80 mCrab

4 January 2008 --

Week 622 results (2007 December 28 - 2008 January 3)

  • Mkn 421 - about 25 mCrab
  • Cir X-1 - below 20 mCrab
  • X1553-542 - ~25 mCrab (based on relatively noisy data); see also ATel No. 1345
  • X1630-472 - ~130 mCrab; see also ATel No. 1348
  • H1743-322 - the data show a number of high intensities; however, these could all be strongly affected by solar contamination; in the opinion of the reviewer (AML) it is premature to conclude that this source is in outburst (cf. ATel No. 1348). Note that this is much different from the case of X1630-472, where the results do NOT look noisy like the product of contamination.

28 December 2007 --

Week 621 results (2007 December 21 - 27)

  • X0656-072 - roughly 13 mCrab
  • HETE J1900.1-2455 - roughly 15 mCrab

26 December 2007 --

Week 620 results (2007 December 14 - 20)

  • X0656-072 - daily averages declined from ~13 mCrab to very low fluxes
  • Mkn 421 - ~15 mCrab

    Note: Pickings are slim with the Sun in the foreground of the Galactic bulge.

14 December 2007 --

Week 619 results (2007 December 7 - 13)

  • X0656-072 - below ~13 mCrab
  • Mkn 421 - ~20 mCrab
  • Cir X-1 - < 50 mCrab
  • X1608-522 - the very few measurements suggest the intensity is < 60 mCrab
  • HETE J1900.1-2455 - may have risen to ~50 mCrab
  • Cyg X-3 - was as strong as ~260 mCrab

10 December 2007 --

Week 618 results (2007 November 30 - December 6)

  • X0656-072 - ~13 mCrab
  • GRO J1008-57 - below 20 mCrab
  • Mkn 421 - possibly over 25 mCrab

3 December 2007 --

Week 617 results (2007 November 23 - 29)

  • X0656-072 - remained about 40 to 50 mCrab
  • EXO 0748-676 - just about 30 mCrab
  • X0918-548 - ~25 mCrab
  • GRO J1008-57 - declined from ~80 to ~40 mCrab
  • Mkn 421 - ~15 mCrab
  • X1608-522 - declined to ~200 mCrab
  • X1705-440 - < ~20 mCrab
  • RX J1709.5-2639 - rose to ~200 mCrab
  • X1730-333 (the Rapid Burster) - rose to ~130 mCrab in the daily average intensities; the last four or so outbursts have occurred at ~170 day intervals
  • HETE J1900.1-2455 - possibly about 15 to 20 mCrab

26 November 2007 --

Week 616 results (2007 November 16 - 22)

  • X0656-072 - ~50 mCrab (also see ATel Nos. 1281, 1283, 1293)
  • X0918-548 - ~20 mCrab
  • GRO J1008-57 - rose to nearly 80 mCrab (also see ATel Nos.1298, 1304)
  • Cir X-1 - ~130 mCrab for the latter 4 days of the week
  • X1608-522 - declined to ~290 mCrab
  • X1657-415 - ~33 mCrab
  • RX J1709.5-2639 - rose to ~80 mCrab (see ATel No. 1302)
  • SAX J1712.6-3739 - was as high as 40 mCrab for part of the week
  • HETE J1900.1-2455 - 15 to 30 mCrab

16 November 2007 --

Week 615 results (2007 November 9 - 15)

  • X0656-072 - ~15 mCrab (also see ATel Nos. 1281, 1283)
  • GRO J1008-57 - 10 to 30 mCrab
  • Mkn 421 - ~20 mCrab
  • Cen A - ~20 mCrab
  • Cir X-1 - rose to ~90 mCrab
  • X1608-522 - declined to ~330 mCrab
  • SAX J1712.6-3739 - was as strong as 45 mCrab
  • GRS 1747-312 - ~25 mCrab
  • HETE J1900.1-2455 - possibly rose to ~20 mCrab

12 November 2007 --

Week 614 results (2007 November 2 - 8)

  • GRO J1008-57 - ~20 mCrab for the last few days of the week
  • Cen A - ~20 mCrab
  • Cir X-1 - < 13 mCrab
  • X1608-522 - declined to ~450 mCrab
  • RX J1708.9-3219 - possibly increased to ~25 mCrab
  • IGR J17098-3626 - ~25 mCrab
  • Cyg X-3 - rose to ~210 mCrab

2 November 2007 --

Week 613 results (2007 October 26 - November 1)

  • Mkn 421 - up to ~25 mCrab
  • Cir X-1 - <13 mCrab
  • X1608-522 - decreased to ~500 mCrab
  • SL1746-331 - declined to less than 13 mCrab
  • EXO 2030+375 - showed some unusual flaring to as strong as 65 mCrab in the daily averages this week
  • Cyg X-3 - rose to ~130 mCrab

29 October 2007 --

Week 612 results (2007 October 19 - 25)

  • X0918-548 - declined from perhaps ~20 mCrab; generally the light curve shows roughly cyclical up and down intensity cycles with, recently, about 16 days between the higher intensity times
  • Mkn 421 - rose to 20 to 25 mCrab
  • X1608-522 - rose to ~630 mCrab
  • SL 1746-331 - declined to ~28 mCrab

19 October 2007 --

Week 611 results (2007 October 12 - 18)

  • X0614+091 - rose to ~80 mCrab and then declined to a more typical ~25 mCrab
  • Cir X-1 - was in the range 100 to 330 mCrab
  • X1608-522 - rose to at least 80 and possibly over 100 mCrab
  • SL1746-331 - declined to ~80 mCrab

12 October 2007 --

Week 610 results (2007 October 5 - 11)

  • X0918-548 - < 15 mCrab
  • X1323-619 - ~20 mCrab
  • Cir X-1 - rose to 200 mCrab
  • X1608-522 - nearly 50 mCrab
  • IGR J17098-3626 - declined to roughly 40 mCrab
  • SAX J1712.6-3739 - was ~30 mCrab for a few days, but then decreased significantly
  • SL1746-331 - rose to ~170 mCrab (also see ATel No.1235)
  • Aql X-1 - <15 mCrab
  • Cyg X-3 - declined to ~70 mCrab

9 October 2007 --

Week 609 results (2007 September 28 - October 4)

  • X0614+091 - varied in the range 35 to 90 mCrab
  • X0918-548 - rose to ~20 mCrab
  • Cen A - ~15 mCrab
  • Cir X-1 - ~70 mCrab
  • X1608-522 - 40 to 50 mCrab
  • SAX J1712.6-3739 - appeared to rise to ~30 mCrab
  • SAX J1810.8-2609 - roughly 30 mCrab
  • HETE J1900.1-2455 ~16 mCrab
  • Aql X-1 - declined to ~13 mCrab
  • X1957+115 - rose to ~60 mCrab
  • Cyg X-3 - rose to ~150 mCrab

1 October 2007 --

Week 608 results (2007 September 21 - 27)

  • X0512-401 - roughly 20 mCrab
  • X0614+091 - rose to ~65 mCrab
  • Cir X-1 - mostly below 50 mCrab
  • X1608-522 - ~25 mCrab
  • SAX J1712.6-3739 - possibly near 13 mCrab
  • SAX J1810.8-2609 - declined from ~50 to ~30 mCrab
  • X1850-087 - ~13 mCrab
  • Aql X-1 - declined to ~120 mCrab
  • Cyg X-3 - rose to ~130 mCrab

24 September 2007 --

Week 607 results (2007 September 14 - 20)

  • X0512-401 - ~25 mCrab
  • X0614+091 - rose to ~120 mCrab for a day or two and then declined to ~50 mCrab
  • SAX J1810.8-2609 - possibly near 40 mCrab
  • Aql X-1 - rose to ~240 mCrab and then began to decline

17 September 2007 --

Week 606 results (2007 September 7 - 13)

  • X0512-401 - ~20 mCrab
  • Cen A - ~13 mCrab
  • Cir X-1 - ~200 mCrab
  • X1608-522 - ~15 mCrab
  • GX 339-4 - less than 13 mCrab
  • IGR J17098-3626 - ~90 mCrab
  • SAX J1810.8-2609 - may be as strong as 20 mCrab
  • HETE J1900.1-2455 - ended the week below 10 mCrab
  • Aql X-1 - 140 mCrab and rising rapidly (see ATel 1216)
  • SAX J2103.5+4545 - ~10 mCrab

7 September 2007 --

Week 605 results (2007 August 31 - September 6)

  • X0512-401 - rose to ~13 mCrab
  • X1608-522 - declined to ~15 mCrab
  • Swift J1753.5-0127 - still ~20 mCrab
  • HETE J1900.1-2455 - may still be near 30 mCrab
  • Aql X-1 - rose to ~20 mCrab
  • X1916-053 - ~20 mCrab

31 August 2007 --

Week 604 results (2007 August 24 - 30)

  • Cir X-1 - remained below 13 mCrab
  • X1608-522 - ~28 mCrab
  • GX339-4 - ~13 mCrab
  • X1705-440 - rose to ~370 mCrab
  • IGR J17098-3626 - rose slightly to ~90 mCrab
  • X1724-307 - near 25 mCrab
  • SAX J1810.8-2609 - perhaps 20 mCrab
  • HETE J1900.1-2455 - ~25 mCrab

24 August 2007 --

Weeks 602 and 603 results (2007 August 10 - 23)

  • LSV+4417 - possibly ~25 mCrab for about 3 days
  • Cir X-1 - remained < 13 mCrab
  • X1608-522 - mostly near 50 mCrab
  • GX339-4 - ~20 mCrab
  • IGR J17098-3626 - ~70 mCrab
  • SAX J1712.6-3739 - in the range 0 to 25 mCrab
  • SAX J1810.8-2609 - rose to about 50 mCrab (also see ATel Nos. 1175, 1185)
  • HETE J1900.1-2455 - 15 to 40 mCrab

13 August 2007 --

Week 601 results (2007 August 3 - 9)

  • X0614+091 - 40 to 80 mCrab
  • HD 101379 - appears to have flared to ~50 mCrab and then decayed over the course of a day or two
  • Cir X-1 - remained below 13 mCrab
  • X1608-522 - averaged about 60 mCrab and flared to ~400 mCrab in at least one dwell
  • XTE J1701-462 - declined to <13 mCrab (also see ATel No. 1178)
  • GX 339-4 - still near 20 mCrab
  • SAX J1712.6-3739 - 10 to 25 mCrab
  • Swift J1753.5-0127 - remained near 20 mCrab
  • XTE J1856+053 - below 13 mCrab

6 August 2007 --

Week 600 results (2007 July 27 - August 2)

  • X0512-401 - < 10 mCrab
  • Cir X-1 - < 13 mCrab
  • X1608-522 - ~50 mCrab
  • XTE J1701-462 - declined to 13 to 25 mCrab
  • GX339-4 - ~16 mCrab
  • IGR J17098-3626 - ~65 mCrab
  • EXO 1745-248 - investigation of the high intensities during two dwells last week (week 599) suggests that those results are NOT reliable
  • XTE J1856+053 - roughly 10 mCrab
  • HETE J1900.1-2455 - roughly 20 mCrab
  • X2127+119 - ~13 mCrab

27 July 2007 --

Week 599 results (2007 July 20 - 26)

  • X0512-401 - appears to have dropped below 13 mCrab
  • X1608-522 - rose linearly to ~60 mCrab
  • XTE J1701-462 - dropped to ~50 mCrab
  • GX 339-4 - ~20 mCrab
  • IGR J17098-3626 - still near 65 mCrab
  • SAX J1712.6-3739 - roughly 20 mCrab
  • EXO 1745-248 - two dwells early in the week exhibited high burst-like intensities (it is not 100% clear that these are not artifacts)
  • XTE J1856+053 - declined to ~13 mCrab
  • Cyg X-1 - rose to ~450 mCrab
  • X2127+119 - between 20 and 30 mCrab

23 July 2007 --

Week 598 results (2007 July 13 - 19)

  • X0512-401 - ~15 mCrab
  • Cir X-1 - remained <13 mCrab
  • X1608-522 - ~25 mCrab
  • XTE J1701-462 - ~120 mCrab
  • X1705-440 - ~15 mCrab
  • IGR J17098-3626 - ~65 mCrab
  • XTE J1856+053 - decreased to ~33 mCrab
  • Cyg X-1 - is near 330 mCrab, having risen from less than half that flux over the last 60 to 90 days
  • X2127+119 - 25 to 30 mCrab

13 July 2007 --

Week 597 results (2007 July 6 - 12)

  • X0512-401 - ~25 mCrab
  • X1323-619 - ~20 mCrab
  • Cir X-1 - <13 mCrab
  • X1608-522 - ~20 mCrab
  • XTE J1701-462 - ~130 mCrab
  • GX 339-4 - possibly ~13 mCrab
  • IGR J17098-3626 - ~65 mCrab
  • SAX J1712.6-3739 - may be ~25 mCrab
  • X1730-333 (Rapid Burster) - continued to decline, but the noisiness of the data imply that the intensity at the end of the week was not well-determined
  • GRS1747-312 - <13 mCrab
  • XTE J1856+053 - ~40 mCrab
  • X2127+119 - declined to ~25 mCrab

6 July 2007 --

Week 596 results (2007 June 29 - July 5)

  • X0512-401 - may be near 20 mCrab
  • X0918-548 - ~13 mCrab
  • X1323-619 - ~15 mCrab
  • Cir X-1 - <13 mCrab
  • X1608-522 - dropped to ~50 mCrab
  • XTE J1701-462 - near 130 mCrab
  • IGR J17098-3626 - ~60 mCrab
  • X1730-333 - declined to 15 or 20 mCrab
  • GRS1747-312 - ~15 mCrab
  • XTE J1856+053 - remained near 60 mCrab
  • Aql X-1 - <13 mCrab
  • EXO 2030+375 - peaked at ~130 mCrab and then declined some
  • X2127+119 - ~50 mCrab (is or is close to a record high for RXTE/ASM)

29 June 2007 --

Week 595 results (2007 June 22 - 28)

  • X1608-522 - declined to ~330 mCrab
  • XTE J1701-462 - down to ~170 mCrab as it slowly declines
  • IGR J17098-3626 - ~65 mCrab
  • X1730-333 (Rapid Burster) - declined to ~40 mCrab after a small increase
  • GRS 1747-312 - 15 to 40 mCrab
  • GRS 1758-258 - ~40 mCrab
  • XTE J1856+053 - was in the range 45 to 60 mCrab
  • HETE J1900.1-2455 - ~13 mCrab
  • Aql X-1 - rose to ~40 mCrab and then declined to ~15 mCrab
  • EXO 2030+375 - rose to 50 to 70 mCrab
  • Cyg X-3 - daily average intensity decreased to ~70 mCrab and hardness ratio 2 increased
  • X2127+119 - ~35 mCrab

26 June 2007 --

Week 594 results (2007 June 15 - 21)

  • Cir X-1 - remained <13 mCrab
  • X1608-522 - rose to ~530 mCrab
  • XTE J1701-462 - roughly 170 mCrab
  • IGR J17098-3626 - ~60 mCrab
  • X1730-333 (Rapid Burster) - declined from ~145 mCrab to ~90 mCrab
  • GRS1747-312 - decreased from ~40 mCrab to ~13 mCrab
  • XTE J1856+053 - more or less steady near 55 mCrab
  • HETE J1900.1-2455 - ~13 mCrab
  • Cyg X-3 - daily average intensities declined over the last few weeks to ~130 mCrab
  • X2127+119 - 40 to 55 mCrab

18 June 2007 --

Week 593 results (2007 June 8 - 14)

  • Cir X-1 - remained < 15 mCrab
  • X1608-522 - rose to ~65 mCrab (also see ATel No. 1113)
  • XTE J1701-462 - ~170 mCrab
  • GX 339-4 - was weaker than 13 mCrab at the end of the week
  • IGR J17098-3626 - ~65 mCrab
  • SAX J1712.6-3739 - may be roughly 15 to 20 mCrab
  • X1730-333 (Rapid Burster) - rose sharply to ~160 mCrab
  • GRS1747-312 - rose to ~40 mCrab
  • XTE J1856+053 - decreased from ~100 mCrab to ~65 mCrab
  • HETE J1900.1-2455 - varied in the range 0 to 30 mCrab
  • Aql X-1 - < 15 mCrab
  • EXO 2030+375 - decreased to < 13 mCrab
  • X2127+119 - ~45 mCrab

8 June 2007 --

Week 592 results (2007 June 1 - 7)

  • Cir X-1 - remained below 13 mCrab
  • XTE J1701-462 - ~190 mCrab
  • GX 339-4 - <15 mCrab
  • XTE J1856+053 - increased sharply to ~100 mCrab late in the week (cf. ATel No. 1093)
  • Aql X-1 - rose to ~65 mCrab and then declined to ~20 mCrab
  • EXO 2030+375 - decreased to ~25 mCrab
  • X2127+119 - rose to ~25 mCrab

4 June 2007 --

Week 591 results (2007 May 25 - 31)

  • Cir X-1 - returned to levels below 13 mCrab
  • GX 339-4 - still about 15 mCrab or so
  • IGR J17098-3626 - roughly 35 to 40 mCrab
  • Aql X-1 - varied in the range 25 to 50 mCrab
  • Cyg X-1 - showed flaring activity (to ~500 mCrab) for the first time in months
  • EXO 2030+375 - declined to ~50 mCrab

29 May 2007 --

Week 590 results (2007 May 18 - 24)

  • Cir X-1 - rose to ~35 mCrab
  • XTE J1701-462 - ~200 mCrab
  • GX 339-4 - faded to 13 mCrab mid-week and possibly to a lower level later in the week
  • HETE J1900.1-2455 - less than 13 mCrab (see also ATel No.1086)
  • Aql X-1 - rose to ~50 mCrab (see also ATel Nos. 1079 and 1080)
  • EXO 2030+375 - roughly 80 mCrab

21 May 2007 --

Week 589 results (2007 May 10 - 17)

  • Cir X-1 - remained below 13 mCrab
  • XTE J1701-462 - ~230 mCrab
  • GX 339-4 - declined to ~45 mCrab
  • IGR J17191-2821 - below 13 mCrab
  • XTE J1856+053 - below 13 mCrab
  • EXO 2030+375 - rose to ~130 mCrab
  • SAX J2103.5+4545 - below 13 mCrab

11 May 2007 --

Week 588 results (2007 May 4 - 10)

  • Cir X-1 - still <13 mCrab
  • XTE J1701-462 - ~250 mCrab
  • GX339-4 - ~100 mCrab
  • IGR J17098-3626 - ~25 mCrab
  • IGR J17191-2821 - declined from a peak of ~50 mCrab to roughly 30 mCrab (see ATel Nos. 1065, 1068, 1069, 1070)
  • XTE J1856+053 - decreased to a level below 13 mCrab
  • HETE J1900.1-2455 - ~20 mCrab

7 May 2007 --

Week 587 results (2007 April 27 - May 3)

  • X1246-588 - still ~15 mCrab
  • XTE J1701-462 - ~260 mCrab
  • GX 339-4 - remained near 130 mCrab
  • XTE J1856+053 - declined to roughly 20 mCrab
  • HETE J1900.1-2455 - decreased to ~13 mCrab
  • EXO 2030+375 - ~13 mCrab
  • SAX J2103.5+4545 - decreased to ~15 mCrab

30 April 2007 --

Week 586 results (2007 April 20 - 26)

  • X1246-588 - ~15 mCrab
  • Cir X-1 - still below 13 mCrab
  • XTE J1701-462 - ~240 mCrab
  • GX 339-4 - more or less steady near 130 mCrab
  • XTE J1856+053 - ~40 mCrab
  • HETE J1900.1-2455 - ~45 mCrab
  • Cyg X-1 - ~130 mCrab; this is the lowest intensity seen over an extended interval during the entire RXTE mission; the spectrum is as hard as it gets
  • SAX J2103.5+4545 - rose to ~30 mCrab (cf. ATel Nos. 1063, 1064); this is the highest intensity seen during the RXTE mission

24 April 2007 --

Week 585 results (2007 April 13 - 19)

  • X1246-588 - ~13 mCrab
  • Cir X-1 - continues to be very weak, i.e., <13 mCrab
  • GX339-4 - decreased to ~120 mCrab
  • Swift J1753.5-0127 - remains near 20 mCrab
  • XTE J1856+053 - ~37 mCrab
  • HETE J1900.1-2455 - declined from ~60 to ~35 mCrab
  • EXO 2030+375 - ~15 mCrab

13 April 2007 --

Week 584 results (2007 April 6 - 12)

  • Cir X-1 - remains below 13 mCrab
  • XTE J1701-462 - ~240 mCrab
  • GX339-4 - ~200 mCrab
  • IGR J17098-3626 - ~30 mCrab
  • XTE J1856+053 - declined to ~40 mCrab
  • EXO 2030+375 - ~40 mCrab

9 April 2007 --

Week 583 results (2007 March 30 - April 5)

  • LMC X-3 - rose to 20 to 25 mCrab
  • Cir X-1 - remained below 13 mCrab
  • XTE J1701-462 - about 300 mCrab
  • GX339-4 - declined to ~240 mCrab
  • XTE J1856+053 - declined slowly and smoothly to approximately 60 mCrab
  • EXO 2030+375 - ~80 mCrab

30 March 2007 --

Week 582 results (2007 March 23 - 29)

  • LMC X-3 - remained below 13 mCrab
  • GX 339-4 - declined to about 260 mCrab and the spectrum softened a bit more
  • X1728-34 (= GX354-0) - ~170 mCrab
  • XTE J1856+053 - remained near 70 mCrab
  • EXO 2030+375 - increased to ~55 mCrab

26 March 2007 --

Week 581 results (2007 March 16 - 22)

  • LMC X-3 - below 13 mCrab
  • X0918-548 - ~20 mCrab
  • Cir X-1 - remained below 13 mCrab
  • GX 339-4 - declined but not monotonically, the most recent daily average intensity is ~330 mCrab
  • SL1744-300 - remained near 30 mCrab
  • Swift J1753.5-012 - remained near 20 mCrab
  • XTE J1856+053 - stayed near 75 mCrab
  • EXO 2030+375 - ~15 mCrab

19 March 2007 --

Week 580 results (2007 March 9 - 15)

  • Cir X-1 - still below 13 mCrab
  • Her X-1 - the most recent two "high ON" states had peak intensities of about 40 mCrab that are lower than the typical peak intensity of ~100 mCrab
  • XTE J1701-462 - ~260 mCrab
  • GX 339-4 - dropped to ~500 mCrab; the spectrum remained very soft
  • IGR J17098-3626 - ~40 mCrab
  • XTE J1856+053 - 50 to 75 mCrab
  • EXO 2030+375 - declined to ~15 mCrab
  • Cyg X-3 - for most days the average intensity was ~50 mCrab

12 March 2007 --

Week 579 results (2007 March 2 - 8)

  • LMC X-3 - <10 mCrab
  • GRO J1008-57 - ~13 mCrab; this is a small outburst at the time expected from the 248.9 d period (see ATel No. 940 and references therein)
  • Cir X-1 - remained below 13 mCrab
  • GX 339-4 - declined to ~600 mCrab
  • XTE J1856+053 - rose to ~65 mCrab (see ATel Nos. 1024 and 1026)
  • EXO 2030+375 - declined to ~30 mCrab
  • Cyg X-3 - daily average intensities fell to ~70 mCrab

5 March 2007 --

Week 578 results (2007 February 23 - March 1)

  • Cir X-1 - remained < 13 mCrab
  • XTE J1701-462 - rose to ~330 mCrab
  • GX339-4 - varied in the range 730 to 930 mCrab
  • IGR J17098-3626 - ~40 mCrab
  • X1708-407 - roughly 20 mCrab
  • Swift J1753.5-0127 - continues near 20 mCrab
  • EXO 2030+375 - 80 to 100 mCrab

23 February 2007 --

Week 577 results (2007 February 16 - 22)

  • Cir X-1 - still very low in flux, <13 mCrab
  • XTE J1701-462 - ~260 mCrab
  • GX 339-4 - seems to have reached a peak intensity of ~800 mCrab; HR 2 has decreased dramatically
  • Swift J1753.5-0127 - still ~20 mCrab
  • EXO 2030+375 - ~130 mCrab
  • Cyg X-3 - average flux (over the week) has declined to ~130 mCrab from the ~250 mCrab level that has prevailed for a number of months

16 February 2007 --

Week 576 results (2007 February 9 - 15)

  • EXO 0748-676 - ASM fluxes are steady near 13 mCrab
  • Cir X-1 - remained securely below 20 mCrab and was mostly below 13 mCrab
  • Her X-1 - the peak intensity during the most recent "on" state (~45 mCrab) was only about half that of a typical "on" state
  • XTE J1701-462 - more or less steady near 330 mCrab
  • GX 339-4 - rose to ~730 mCrab and the spectrum became noticeably softer (but not as soft as in the middle of a typical outburst)
  • EXO 2030+375 - rose to ~130 mCrab

9 February 2007 --

Week 575 results (2007 February 2 - 8)

  • Cir X-1 - weaker than ~20 mCrab
  • XTE J1701-462 - ~360 mCrab
  • GX339-4 - rose to ~400 mCrab and the spectrum is still relatively hard
  • X1705-440 - ~350 mCrab
  • GRS1915+105 - rose to ~670 mCrab and the spectrum softened a bit
  • EXO2030+375 - was as strong as 50 mCrab

2 February 2007 --

Week 574 results (2007 January 26 - February 1)

  • Cir X-1 - was as strong as ~50 mCrab in the daily averages
  • GX339-4 - the few recent measurements show it near 290 mCrab
  • X1705-440 - rose to very roughly 330 mCrab

29 January 2007 --

Week 573 results (2007 January 19 - 25)

  • Cir X-1 - < 30 mCrab for the entire week
  • XTE J1701-462 - 260 to 330 mCrab
  • GX339-4 - increased to ~200 mCrab
  • X1705-440 - increased to ~260 mCrab
  • EXO 2030+375 - in the range 0 to 40 mCrab

19 January 2007 --

Week 572 results (2007 January 12 - 18)

  • XTE J1701-462 - ~360 mCrab
  • GX339-4 - roughly 150 mCrab
  • X1705-440 - increased to ~170 mCrab
  • EXO2030+375 - decreased to roughly 15 mCrab

12 January 2007 --

Week 571 results (2007 January 5 - 11)

  • EXO2030+375 - ~40 mCrab at the end of the week

5 January 2007 --

Week 570 results (2006 December 29 - 2007 January 4)

  • EXO0748-676 - now below 13 mCrab
  • XTE J1701-462 - roughly 300 mCrab
  • GX 339-4 - roughly 60 mCrab; sparse measurements suggest the intensity is gradually increasing
  • EXO2030+375 - more or less steady near 80 mCrab

2 January 2007 --

Week 569 results (2006 December 22 - 28)

  • EXO0748-676 - remained near 30 mCrab
  • XTE J1701-462 - ~260 mCrab
  • GX339-4 - may have been as strong as 70 mCrab
  • EXO2030+375 - still active, varying up to ~80 mCrab

26 December 2006 --

Week 568 results (2006 December 15 - 21)

  • EXO0748-676 - remained near 25 mCrab
  • Cir X-1 - was as strong as ~330 mCrab
  • GX339-4 - ~60 mCrab
  • X1730-333 (the Rapid Burster) - on the basis of just a few observations (which are too few to be taken as more than 90% reliable) may be in outburst at ~130 mCrab

18 December 2006 --

Week 567 results (2006 December 8 - 14)

  • EXO0748-676 - varied in the range 25 to 40 mCrab
  • XTE J1701-462 - decreased to ~260 mCrab
  • GX339-4 - may be as strong as 50 mCrab
  • EXO2030+375 - declined from ~30 mCrab to less than 13 mCrab

11 December 2006 --

Week 566 results (2006 December 1 - 7)

  • EXO0748-676 - increased to ~30 mCrab
  • Cir X-1 - rose to ~200 mCrab
  • EXO2030+375 - varied in the range 0 to 50 mCrab

1 December 2006 --

Week 565 results (2006 November 24 - 30)

  • XTE J1701-462 - remained near 350 mCrab
  • X1822-000 - rose to ~35 mCrab
  • X1953+319 - ~20 mCrab
  • EXO2030+375 - decreased to ~20 mCrab
  • X2206+543 - below 15 mCrab or so

27 November 2006 --

Week 564 results (2006 November 17 - 23)

  • Cir X-1 - was as strong as ~60 mCrab
  • XTE J1701-462 - stronger (averaging ~360 mCrab) and more variable
  • EXO2030+375 - ~50 mCrab for the last 4 days of the week
  • X2206+543 - increased rapidly to ~40 mCrab at the end of the week

20 November 2006 --

Week 563 results (2006 November 10 - 16)

  • IC 4329A - possibly detected at ~15 mCrab
  • Cir X-1 - rather weak, i.e., below 13 mCrab for most of the week
  • XTE J1701-462 - still near 330 mCrab
  • X1916-053 - ~15 mCrab
  • EXO2030+375 - rose as high as 75 mCrab and then declined to ~40 mCrab

13 November 2006 --

Week 562 results (2006 November 3 - 9)

  • LMC X-3 - below 10 mCrab
  • HETE J1900.1-2455 - ~25 mCrab
  • EXO2030+375 - may have increased to ~20 mCrab

5 November 2006 --

Week 561 results (2006 October 27 - November 2)

  • XTE J1701-462 - ~280 mCrab
  • EXO2030+375 - appeared to have gotten weaker and then increased to ~13 mCrab

30 October 2006 --

Week 560 results (2006 October 20 - 26)

  • X0512-401 - up to ~23 mCrab
  • X1624-490 - decreased to ~25 mCrab; this is unusual for this source
  • EXO2030+375 - ~13 mCrab

23 October 2006 --

Week 559 results (2006 October 13 - 19)

  • Sigma Gem - flared to ~60 mCrab on one day
  • XTE J1701-462 - still about 260 mCrab
  • EXO2030+375 - down to ~20 mCrab

16 October 2006 --

Week 558 results (2006 October 6 - 12)

  • X1323-619 - ~13 mCrab
  • XTE J1701-462 - roughly 260 mCrab
  • IGR J17098-3626 - ~30 mCrab
  • X1850-087 - ~13 mCrab
  • EXO2030+375 - decreased to ~35 mCrab

6 October 2006 --

Week 557 results (2006 September 29 - October 5)

  • XTE J1701-462 - rose slowly to about 290 mCrab
  • IGR J17098-3626 - ~30 mCrab
  • EXO2030+375 - dropped to ~60 mCrab

3 October 2006 --

Week 556 results (2006 September 22 - 28)

  • XTE J1701-462 - declined slightly to ~240 mCrab
  • SL1744-300 - ~27 mCrab
  • X1850-087 - ~25 mCrab
  • HETE J1900.1-2455 - ~20 mCrab
  • X1916-053 - ~15 mCrab
  • EXO 2030+375 - decreased to ~120 mCrab
  • X2127+119 - ~13 mCrab

25 September 2006 --

Week 555 results (2006 September 15 - 21)

  • XTE J1701-462 - remained near 280 mCrab
  • X1850-087 - increased to 20 to 25 mCrab
  • HETE J1900.1-2455 - remains near 25 mCrab
  • X1916-053 - ~15 mCrab at the end of the week
  • EXO 2030+375 - decreased to ~170 mCrab

15 September 2006 --

Week 554 results (2006 September 8 - 14)

  • X0512-401 - rose to ~20 mCrab
  • X0918-548 - ~15 mCrab
  • XTE J1701-462 - remained steady near 280 mCrab
  • EXO 2030+375 - declined to ~230 mCrab

8 September 2006 --

Week 553 results (2006 September 1 - 7)

  • Cir X-1 - flared briefly to 2 Crab
  • XTE J1701-462 - ~280 mCrab
  • EXO 2030+375 - decreased to ~320 mCrab

1 September 2006 --

Week 552 results (2006 August 25 - 31)

  • XTE J1701-462 - remained near 300 mCrab
  • Swift J1753.5-0127 - ~16 mCrab
  • EXO 2030+375 - dropped to ~375 mCrab

29 August 2006 --

Week 551 results (2006 August 18 - 24)

  • EXO 0748-676 - rose to ~20 mCrab from ~10 mCrab
  • Cir X-1 - was as strong as 1.7 Crab
  • XTE J1701-462 - 260 to 320 mCrab
  • X1704+240 - still ~10 mCrab
  • IGR J17098-3626 - 25 to 50 mCrab with possible evidence of a burst
  • SAX J1712.6-3739 - ~13 mCrab
  • GRS 1758-258 - still 25 to 60 mCrab
  • Aql X-1 - < 13 mCrab
  • EXO 2030+375 - 440 to 480 mCrab

21 August 2006 --

Weeks 549 and 550 results (2006 August 4 - 17)

  • EXO 0748-676 - was as strong as 40 mCrab
  • Cir X-1 - very weak again (below 13 mCrab)
  • XTE J1701-462 - near 260 mCrab
  • X1704+240 - ~9 mCrab
  • IGR J17098-3626 - ~33 mCrab
  • X1724-307 - was as strong as 65 mCrab
  • SL1744-300 - ~25 mCrab
  • GRS 1758-258 - 25 to 60 mCrab
  • HETE J1900.1-2455 - still roughly 25 mCrab
  • Aql X-1 - dropped from ~50 to ~15 mCrab
  • EXO 2030+375 - 470 to 530 mCrab

7 August 2006 --

Week 548 results (2006 July 28 - August 3)

  • X1608-522 - < 13 mCrab
  • XTE J1701-462 - still about 260 mCrab
  • X1724-307 - 25 to 40 mCrab
  • HETE J1900.1-2455 - still ~25 mCrab
  • Aql X-1 - rose to ~40 mCrab near the end of the week (cf. ATel Nos. 869 - 872)
  • EXO 2030+375 - close to 500 mCrab

31 July 2006 --

Week 547 results (2006 July 21 - 27)

  • Mkn 421 - varied in the range 20 to 65 mCrab (relatively few observations were obtained this week)
  • Cir X-1 - varied in the range 210 to 480 mCrab
  • X1608-522 - decreased to below 13 mCrab
  • XTE J1701-462 - still near 300 mCrab
  • EXO 2030+375 - still near 400 mCrab but may be more variable

21 July 2006 --

Week 546 results (2006 July 14 - 20)

  • Mkn 421 - was as strong as ~80 mCrab
  • Cir X-1 - started rising in strength and reached ~230 mCrab
  • X1608-522 - decreased to ~25 mCrab
  • X1657-415 - rose to ~30 mCrab
  • XTE J1701-462 - continued more or less steady near 300 mCrab
  • EXO 2030+375 - rose to ~420 mCrab

17 July 2006 --

Week 545 results (2006 July 7 - 13)

  • GRO J1008-57 - below 13 mCrab
  • Mkn 421 - still strong, averaging ~30 mCrab, but clearly variable
  • Cir X-1 - <15 mCrab
  • X1608-522 - variable in the neighborhood of 60 mCrab
  • XTE J1701-462 - fairly steady near 290 mCrab
  • X1724-307 - roughly 25 to 50 mCrab
  • X1730-333 (Rapid Burster) - declined to < 15 mCrab
  • GRS 1747-312 - possibly was as strong as 60 mCrab for 2 or 3 days
  • Swift J1753.5-0127 - more or less steady near 18 mCrab
  • EXO 2030+375 - rose to ~370 mCrab

7 July 2006 --

Week 544 results (2006 June 30 - July 6)

  • EXO 0748-676 - was up to ~30 mCrab for a few days
  • GRO J1008-57 - may have been up to ~20 mCrab; this is consistent with the time of the previous outburst and a 249 day outburst period
  • Mkn 421 - may have been as strong as 65 mCrab at the end of the week
  • Cir X-1 - <13 mCrab for the entire week (at least in the ASM daily averages)
  • X1608-522 - rose to ~50 mCrab
  • XTE J1701-462 - ~290 mCrab
  • X1724-307 - declined from ~40 to ~20 mCrab
  • X1730-333 (Rapid Burster) - in the range 40 to 80 mCrab
  • GRS 1747-312 - rose to ~30 mCrab
  • EXO 2030+375 - rose to ~330 mCrab

30 June 2006 --

Week 543 results (2006 June 23 - 29)

  • GRO J1008-57 - may be up to 15 mCrab (but this is somewhat uncertain)
  • Mkn 421 - was ~50 mCrab for two days and afterwards was near 30 mCrab
  • Cir X-1 - increased to ~15 mCrab
  • XTE J1701-462 - ~330 mCrab
  • IGR J17098-3626 - ~30 mCrab
  • X1730-333 (Rapid Burster) - still in outburst with daily averages as strong as 130 mCrab
  • Swift J1753.5-0127 - ~20 mCrab
  • XTE J1817-330 - below 13 mCrab
  • HETE J1900.1-2455 - ~20 mCrab
  • EXO 2030+375 - kept rising and hit 250 mCrab at the end of the week

23 June 2006 --

Week 542 results (2006 June 16 - 22)

  • Mkn 421 - ~30 mCrab
  • GX301-2 - the outburst which typically is seen once per orbital cycle was particularly strong with intensities in individual dwells as strong as 500 mCrab
  • Cir X-1 - was again very weak, <13 mCrab, for the entire week
  • XTE 1701-462 - steady near 290 mCrab
  • X1724-307 - ~25 mCrab
  • X1730-333 (Rapid Burster) - an outburst peaked early in the week with peak intensity near 650 mCrab in individual dwells
  • XTE J1817-330 - dropped below 13 mCrab
  • EXO 2030+375 - rose to ~140 mCrab, an historic high for the RXTE era (and rose to ~180 mCrab the first day of week 543)
  • X2206+543 - possibly up to ~13 mCrab

19 June 2006 --

Week 541 results (2006 June 9 - 15)

  • Mkn 421 - roughly 40 mCrab
  • X1630-472 - < 10 mCrab
  • XTE J1701-462 - varied slowly in the range 250 to 400 mCrab
  • X1730-333 (Rapid Burster) - an outburst appears to be starting near the end of the week
  • XTE J1817-330 - ~20 mCrab
  • EXO 2030+375 - ~50 mCrab

12 June 2006 --

Week 540 results (2006 June 2 - 8)

  • Mkn 421 - daily averages range from 10 to 40 mCrab
  • Cir X-1 - rose to ~120 mCrab
  • XTE J1701-462 - ~330 mCrab
  • XTE J1817-330 - down to ~20 mCrab
  • HETE J1900.1-2455 - ~20 mCrab
  • EXO 2030+375 - ~15 mCrab at phases in its 46 d cycle in which it is usually much weaker

2 June 2006 --

Week 539 results (2006 May 26 - June 1)

  • Mkn 421 - 15 to 45 mCrab
  • X1246-588 - flared (or produced a strong burst) to ~2 Crab for a short time (~100 s) early in the week
  • Cir X-1 - remained < 20 mCrab
  • XTE J1701-462 - 260 to 320 mCrab
  • XTE J1817-330 - declined to roughly 25 mCrab

30 May 2006 --

Week 538 results (2006 May 19 - 25)

  • Mkn 421 - strength varied from 50 to 100 mCrab and possibly stronger
  • Cir X-1 - below 20 mCrab and possibly below 10 mCrab for another week
  • X1630-472 - decreased to ~13 mCrab or less
  • XTE J1701-462 - down to ~300 mCrab
  • X1724-307 - may be up to ~40 mCrab
  • SAX J1747.0-2853 - possibly ~50 mCrab
  • XTE J1817-330 - ~40 mCrab
  • Cyg X-1 - low (~240 mCrab) and hard

19 May 2006 --

Weeks 536-537 results (2006 May 5 - 18)

  • Mkn 421 - in the range 25 to 50 mCrab
  • X1323-619 - may have increased to ~15 mCrab
  • Cir X-1 - < 13 mCrab for over 20 days (also see ATels 811, 812)
  • X1630-472 - down to ~15 mCrab
  • XTE J1701-462 - increased to ~400 mCrab
  • XTE J1817-330 - down to ~50 mCrab
  • HETE J1900.1-2455 - ~20 mCrab
  • X2127+119 - was as strong as 25 mCrab for nearly a week

8 May 2006 --

Week 535 results (2006 April 28 - May 4)

  • Cir X-1 - < 13 mCrab for 9 days
  • X1630-472 - ~35 mCrab
  • XTE J1701-462 - declined to ~310 mCrab
  • IGR J17098-3626 - ~25 mCrab
  • XTE J1817-330 - declined to ~65 mCrab
  • HETE J1900.1-2455 - ~25 mCrab

2 May 2006 --

Week 534 results (2006 April 21 - 27)

  • Mkn 421 - up to ~25 mCrab
  • Cir X-1 - ~200 mCrab
  • Swift J1626.6-5156 - < 13 mCrab
  • X1630-472 - declined from ~50 to ~25 mCrab
  • XTE J1701-462 - ~400 mCrab
  • GX339-4 - may be near 25 mCrab
  • IGR J17098-3626 - ~25 mCrab
  • Swift J1753.5-0127 - ~16 mCrab
  • XTE J1817-330 - ~130 mCrab

26 April 2006 --

Week 533 results (2006 April 14 - 20)

  • XTE J1701-462 - ~400 mCrab
  • X1702-429 - ~40 mCrab
  • XTE J1817-330 - fairly steady near 130 mCrab
  • HETE J1900.1-2455 - ~40 mCrab
  • Cyg X-1 - up to 600 to 900 mCrab with some spectral softening

18 April 2006 --

Week 532 results (2006 April 7 - 13)

  • X1630-472 - ~65 mCrab as it continued to decline smoothly
  • XTE J1701-462 - remained near 330 mCrab
  • X1702-429 - ~80 mCrab
  • XTE J1817-330 - down to ~90 mCrab (based on few observations)
  • Cyg X-1 - activity subsided somewhat and hardness ratios increased

18 April 2006 --

Week 531 results (2006 March 31 - April 6)

  • Cir X-1 - ~130 mCrab
  • X1630-472 - down to ~70 mCrab
  • Cyg X-1 - daily averages are 0.7 to 0.8 Crab, and the hardness ratios show that the spectrum is softening

3 April 2006 --

Week 530 results (2006 March 24 - 30)

  • X1630-472 - decreased smoothly to ~80 mCrab
  • X1636-536 - increased sharply to ~210 mCrab
  • XTE J1701-462 - remained near 330 mCrab
  • GX 339-4 - still ~25 mCrab
  • XTE J1817-330 - remained near 240 mCrab
  • Cyg X-1 - had flares which reach to 1 Crab and above

28 March 2006 --

Week 529 results (2006 March 17 - 23)

  • X1630-472 - ~110 mCrab
  • XTE J1701-462 - declined smoothly to ~330 mCrab
  • GX 339-4 - ~20 mCrab
  • IGR J17098-3626 - ~50 mCrab
  • X1724-307 - ~25 mCrab
  • XTE J1817-330 - decayed smoothly to ~230 mCrab
  • GS 1843+009 - has not been seen to exceed 25 mCrab in the last 50 days (cf. ATel No. 769)
  • HETE J1900.1-2455 - ~20 mCrab
  • Cyg X-1 - got a bit stronger, as strong as 650 mCrab, and a bit softer

20 March 2006 --

Week 528 results (2006 March 10 - 16)

  • Cir X-1 - was as strong as ~250 mCrab
  • XTE J1701-462 - 400 to 500 mCrab
  • GX 339-4 - may be ~20 mCrab
  • IGR J17098-3626 - 50 to 80 mCrab
  • X1724-307 - ~20 mCrab
  • XTE J1817-330 - declined to ~260 mCrab
  • HETE J1900.1-2455 - still ~25 mCrab

13 March 2006 --

Week 527 results (2006 March 3 - 9)

  • X1630-472 - ~130 mCrab
  • XTE J1701-462 - ~400 mCrab
  • IGR J17098-3626 - ~70 mCrab
  • X1724-307 - may be just above 25 mCrab
  • RS Oph - <13 mCrab
  • XTE J1817-330 - decreased to ~350 mCrab

3 March 2006 --

Week 526 results (2006 February 24 - March 2)

  • X1630-472 - ~130 mCrab
  • XTE J1701-462 - roughly 500 mCrab
  • RS Oph - declined from ~15 mCrab to < 13 mCrab
  • XTE J1817-330 - decreased from ~660 mCrab to ~330 mCrab

24 February 2006 --

Week 525 results (2006 February 17 - 23)

  • RS Oph - increased to ~50 mCrab at the end of last week and beginning of this week (see ATel nos. 737, 741, 747)
  • Mkn 501 - may have increased to ~10 mCrab
  • XTE J1701-462 - ~570 mCrab for the last half of the week
  • X1728-34 (GX354-0) - possibly up to ~250 mCrab
  • XTE J1817-330 - ~670 mCrab

21 February 2006 --

Week 524 results (2006 February 10 - 16)

  • EXO 0748-676 - < 13 mCrab
  • X1246-588 - ~ 13 mCrab
  • XTE J1701-462 - the few measurements are in the vicinity of 500 mCrab
  • Swift J1753.5-0127 - 20 to 25 mCrab
  • Cyg X-3 - still roughly 300 mCrab in the daily averages

13 February 2006 --

Week 523 results (2006 February 3 - 9)

  • XTE J1701-462 - intensities from individual dwells range from 0.3 to 1.0 Crab
  • IGR J17098-3626 - roughly 50 mCrab
  • XTE J1817-330 - declined to ~1.3 Crab

6 February 2006 --

Week 522 results (2006 January 27 - February 2)

  • EXO 0748-676 - ~25 mCrab
  • X1630-472 - ~250 mCrab
  • XTE J1701-462 - increased from 0.5 to 1.0 Crab
  • IGR J17098-3626 - roughly 40 mCrab
  • XTE J1817-330 - ~1.7 Crab
  • X1901+031 - may have risen to ~20 mCrab
  • Cyg X-3 - daily average intensities are ~280 mCrab

30 January 2006 --

Week 521 results (2006 January 20 - 26)

  • Mkn 421 - ~25 mCrab
  • Cir X-1 - up to ~100 mCrab
  • XTE J1701-462 - in the range 0.6 to 1 Crab
  • X1724-307 - down to < 25 mCrab
  • X1730-333 (Rapid Burster) - results still suggest that an outburst is in progress
  • XTE J1817-330 - a new source just found w/ the ASM at the end of the week as it rose to ~1 Crab (see ATel no. 714)
  • Cyg X-3 - daily averages in the range 250 to 500 mCrab

23 January 2006 --

Week 520 results (2006 January 13 - 19)

  • Cir X-1 - < 30 mCrab (based on a small number of observations)
  • X1630-472 - roughly 250 mCrab (also based on a small number of observations)
  • XTE J1701-462 - as high as ~500 mCrab in a daily average (see ATel 696 plus others; the full ASM light curve is not available yet)
  • X1724-307 - roughly 130 mCrab
  • X1730-333 (Rapid Burster) - is possibly in outburst
  • Cyg X-3 - rose to ~430 mCrab and HR 2 declined markedly

17 January 2006 --

Weeks 518-519 results (2005 December 30 - 2006 January 12)

  • Mkn 421 - in the range 20 to 50 mCrab
  • Cyg X-3 - increased to ~260 mCrab and the spectrum became noticeably softer, i.e., HR2 declined

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