RXTE Galactic Center Observation
Observation Date: | 2000-02-10 |
Mission Day: | 2231r |
Modified Julian Day: | 51584.755 |
Mission times: | 192823649.00- 192832921.00 |
Scan type: | cross |
Main Page: | Observation List | Source List |
Observation Page: | Top | Commentary | Sources | Scan Light Curves |
Map Page: | Reconstructed Model | Residuals |
Scan Light Curves: | Parts 1 | 2 | 3 | 4 |
Craig Markwardt writes: This is a summary of the galactic bulge observation on 10 Feb 2000 (day 2231). The scan pattern was primarily in the east-west direction. There are a few interesting things to report, and I apologize for the length of this message. * SAX J1808-368 has faded considerably. I had heard reports from the pointed observations that the source had "gone." In truth the source is there but very weak - about 5 ct/s/5PCU (2-10 keV) above baseline (0.5 mCrab), or around ten sigma. It is not clear whether this was the end of a strong outburst which occurred while the source was behind the sun, or some smaller non-outburst level of activity. * We observed two probable bursts (!). Sharp outbursts are clearly distinguishable from a point source because we almost always cover the same source in multiple scans. When a source is bright in one scan but not the others, then that's pretty strong evidence for a phenomenon lasting less than a few hundred seconds. From there I can do some profile fitting, and sometimes get a rough exponential decay, etc. * One burst is probably from EXO 1722-363, seen near time 192824450 MET (10 Feb 2000 18:20 UT). An extended decay could be seen, which I was able to model with an exponential with folding time ~50 s. It is difficult to pinpoint the onset of the burst, but if it is 192824430, then the peak flux was near 167 ct/s (17 mCrab) - not huge! * Another burst is probably from GRS 1747-312, seen near time 192826450 (10 Feb 2000 18:54 UT). This is potentially significant since no bursts have been seen from this source to date. I can say that the position fit to GRS 1747-312 is very good, of much better quality than that of the nearby SLX 1744-300, from which we have seen bursts in the past. There is however no evidence that either the SLX or GRS source has stronger-than-baseline persistent flux, and thus no strong evidence of enhanced accretion in either. No time evolution model appears to be required, so I modelled it as a constant of about 380 ct/s (38 mCrab). * The faintness of these fluxes is worth pondering. Even at the galactic center these fluxes imply luminosities smaller than Eddington by a factor of ~100. However, we need to consider that we probably did not catch the onset of the burst in either case, which could have occurred 100-200 sec earlier, so I don't there are any terrible problems. * XTE J1710-281 has become detectable again, at a ~typical flux level of 2 mCrab. This is welcome, as I had feared that it had disappeared for good. Craig
Source | Time (MJD) | RA (2000) | DEC (2000) | Rate (ct/s/5PCU) | Error (ct/s/5PCU) | Bkg (ct/s/5PCU) |
---|---|---|---|---|---|---|
1E1740.7-2942 | 51584.813 | 265.9604 | -29.75 | 267.42 | 27.83 | 138.90 |
1E1743.1-2843 | 51584.827 | 266.5792 | -28.72 | -59.61 | 61.11 | 364.88 |
2E1746.7-3225 | 51584.780 | 267.5144 | -32.43 | 14.55 | 4.79 | 17.53 |
2S1742-294 | 51584.816 | 266.5230 | -29.52 | 78.46 | 39.02 | 379.42 |
2S1803-245 | 51584.842 | 271.7090 | -24.59 | 11.90 | 4.98 | 13.41 |
4U_1711-34 | 51584.779 | 258.5800 | -34.05 | 15.28 | 0.83 | 9.37 |
4U_1728-34 | 51584.778 | 262.9920 | -33.83 | 691.09 | 16.07 | 64.26 |
4U_1746-371 | 51584.758 | 267.5523 | -37.05 | 500.86 | 10.87 | 4.55 |
4U_1820-30 | 51584.776 | 275.9280 | -30.37 | 1962.10 | 38.23 | 3.10 |
4U_1820-30 | 51584.782 | 275.9280 | -30.37 | 2211.87 | 23.16 | 3.10 |
A1744-361 | 51584.763 | 267.0800 | -36.12 | 2.19 | 3.56 | 16.97 |
AX_J1749.1-2639 | 51584.836 | 267.3000 | -26.65 | -35.00 | 26.55 | 2196.86 |
EXO_1722-363 | 51584.765 | 261.4810 | -36.41 | 23.93 | 4.11 | 23.52 |
EXO_1742-326 | 51584.780 | 266.3690 | -32.69 | 30.24 | 5.59 | 23.83 |
EXO_1745-248 | 51584.846 | 267.0208 | -24.78 | 0.60 | 2.71 | 16.47 |
GCRT_J1745-3009 | 51584.803 | 266.2708 | -30.16 | -22.53 | 16.62 | 281.30 |
GCRT_J1746-2757 | 51584.831 | 266.5417 | -27.95 | 71.86 | 14.39 | 34.68 |
GRS_1734-292 | 51584.827 | 264.3533 | -29.18 | 39.88 | 4.97 | 22.44 |
GRS_1747-312 | 51584.785 | 267.6900 | -31.29 | 54.87 | 13.71 | 417.37 |
GRS_1747-312B | 51584.788 | 267.6900 | -31.29 | 436.82 | 30.18 | 33.06 |
GRS_1758-258 | 51584.837 | 270.3025 | -25.74 | 219.79 | 14.09 | 3963.51 |
GS_1826-238 | 51584.840 | 277.3623 | -23.79 | 405.17 | 2.09 | 3.43 |
GX_1+4 | 51584.846 | 263.0090 | -24.75 | 167.77 | 31.40 | 2.99 |
GX_1+4 | 51584.850 | 263.0090 | -24.75 | 100.55 | 5.85 | 2.99 |
GX_1+4 | 51584.853 | 263.0090 | -24.75 | 176.50 | 8.38 | 2.99 |
GX_3+1 | 51584.834 | 266.9830 | -26.56 | 3213.74 | 44.35 | -0.24 |
GX_3+1 | 51584.839 | 266.9830 | -26.56 | 3073.04 | 31.61 | -0.24 |
GX_5-1 | 51584.838 | 270.2840 | -25.08 | 13796.78 | 88.80 | 75.47 |
GX_5-1 | 51584.842 | 270.2840 | -25.08 | 14001.40 | 57.38 | 75.47 |
GX_9+1 | 51584.861 | 270.3846 | -20.53 | 6801.37 | 81.78 | 88.03 |
H1743-322 | 51584.781 | 266.5700 | -32.24 | 15.77 | 6.27 | 33.04 |
IGR_J17191-2821 | 51584.836 | 259.7700 | -28.35 | 5.04 | 4.22 | 4.85 |
IGR_J17331-2406 | 51584.854 | 263.2833 | -24.11 | -9.38 | 6.22 | 51.96 |
IGR_J17375-3022 | 51584.804 | 264.3946 | -30.38 | 6.50 | 7.07 | 33.39 |
IGR_J17497-2821 | 51584.828 | 267.4041 | -28.36 | 6.22 | 22.04 | 78.01 |
IGR_J17511-3057 | 51584.787 | 267.7875 | -30.96 | -72.22 | 25.90 | 356.08 |
IGR_J17586-2129 | 51584.859 | 269.6440 | -21.39 | 12.94 | 4.78 | 35.16 |
KS_1731-260 | 51584.843 | 263.5539 | -26.09 | 81.83 | 4.76 | 8.98 |
KS_1732-273 | 51584.836 | 263.9958 | -27.44 | -2.26 | 4.13 | 41.63 |
KS_1741-293 | 51584.818 | 266.2042 | -29.35 | 36.08 | 67.91 | 413.88 |
MXB_1730-33 | 51584.779 | 263.3498 | -33.39 | 68.41 | 8.79 | 324.70 |
OPH_CLU | 51584.858 | 258.1580 | -23.39 | 482.90 | 14.45 | 3.04 |
RXJ1709.5-263 | 51584.847 | 257.3760 | -26.66 | 0.89 | 0.53 | 3.10 |
RXS_J172006.1 | 51584.807 | 260.0254 | -31.28 | 14.85 | 2.63 | 8.65 |
RXS_J172525.5 | 51584.783 | 261.3563 | -32.95 | 18.87 | 5.41 | 15.40 |
RXS_J173251.1 | 51584.772 | 263.2129 | -34.79 | 18.25 | 4.37 | 43.82 |
RXS_J175428.3 | 51584.836 | 268.6179 | -26.34 | 10.18 | 3.99 | 33.59 |
RXS_J180326.2 | 51584.839 | 270.8417 | -25.27 | -8.06 | 14.08 | 5879.41 |
RXS_J180824.5 | 51584.849 | 272.1021 | -23.15 | 13.31 | 2.89 | 13.77 |
R_1832-330 | 51584.762 | 278.9317 | -32.99 | 81.70 | 1.17 | 3.03 |
SAXJ1747.0-2853 | 51584.827 | 266.7879 | -28.88 | 149.75 | 58.09 | 191.07 |
SAXJ1750.8-2900 | 51584.819 | 267.6000 | -29.03 | 17.44 | 7.54 | 60.27 |
SAXJ1753.5-2349 | 51584.850 | 268.3917 | -23.82 | 5.63 | 3.63 | 16.98 |
SAXJ1802.7-2017 | 51584.861 | 270.6663 | -20.29 | 120.75 | 123.43 | 4275.98 |
SAXJ1805.5-2031 | 51584.861 | 271.3917 | -20.51 | -19.77 | 9.57 | 391.04 |
SAXJ1806.5-2215 | 51584.855 | 271.6417 | -22.25 | 5.30 | 2.68 | 20.81 |
SAXJ1808.4-3658 | 51584.756 | 272.1208 | -36.98 | 2.83 | 0.68 | 3.07 |
SAXJ1808.4-365P | 51584.762 | 271.1200 | -35.50 | 0.78 | 2.51 | 3.32 |
SAXJ1810.8-2609 | 51584.833 | 272.6850 | -26.15 | 3.67 | 2.37 | 8.56 |
SGR_1806-20 | 51584.861 | 272.1642 | -20.41 | 8.21 | 5.07 | 24.55 |
SGR_A | 51584.827 | 266.4000 | -29.00 | 242.45 | 75.41 | 186.64 |
SLX_1735-269 | 51584.837 | 264.5647 | -27.00 | 100.03 | 4.96 | 14.28 |
SLX_1737-282 | 51584.830 | 265.2360 | -28.31 | 24.08 | 10.89 | 45.28 |
SLX_1744-300 | 51584.801 | 266.8580 | -30.04 | 232.07 | 13.99 | 79.49 |
SLX_1746-331 | 51584.777 | 267.4608 | -33.20 | 4.48 | 4.06 | 14.11 |
SW_J1729.9-3437 | 51584.773 | 262.5375 | -34.61 | -0.60 | 4.92 | 105.90 |
SW_J1756.9-2508 | 51584.842 | 269.2380 | -25.11 | -13.41 | 7.30 | 694.45 |
TERZAN_2 | 51584.807 | 261.8880 | -30.80 | 292.84 | 5.96 | 13.93 |
WGAJ1715.3-2635 | 51584.846 | 258.8370 | -26.60 | -0.98 | 1.71 | 3.30 |
XTE_J1710-281 | 51584.836 | 257.5500 | -28.12 | 20.61 | 0.80 | 3.28 |
XTE_J1710-281P | 51584.831 | 258.5500 | -28.91 | 15.09 | 8.00 | 3.93 |
XTE_J1719-291 | 51584.829 | 259.8890 | -29.06 | 0.83 | 3.68 | 6.63 |
XTE_J1719-356 | 51584.769 | 259.9700 | -35.68 | 1.13 | 1.15 | 16.61 |
XTE_J1720-318 | 51584.798 | 259.9961 | -31.75 | -0.40 | 5.49 | 16.90 |
XTE_J1723-376 | 51584.760 | 260.9000 | -37.65 | -0.50 | 0.70 | 15.92 |
XTE_J1726-283 | 51584.834 | 261.6570 | -28.30 | 8.66 | 7.68 | 8.13 |
XTE_J1728-295 | 51584.828 | 262.1570 | -29.52 | 1.60 | 2.97 | 12.24 |
XTE_J1734-234 | 51584.857 | 263.5280 | -23.36 | 2.19 | 2.94 | 3.18 |
XTE_J1737-376 | 51584.758 | 264.4950 | -37.77 | -4.59 | 3.16 | 7.55 |
XTE_J1739-285 | 51584.829 | 264.9790 | -28.48 | 33.17 | 11.22 | 41.16 |
XTE_J1739-302 | 51584.806 | 264.7500 | -30.27 | 9.88 | 8.03 | 35.99 |
XTE_J1743-363 | 51584.763 | 265.7415 | -36.33 | 22.30 | 3.35 | 8.01 |
XTE_J1744-230 | 51584.856 | 266.0350 | -23.12 | 22.24 | 3.25 | 9.04 |
XTE_J1747-274 | 51584.834 | 266.9095 | -27.44 | -6.38 | 13.04 | 332.97 |
XTE_J1748-288 | 51584.828 | 267.0210 | -28.47 | 13.43 | 44.09 | 157.63 |
XTE_J1751-305 | 51584.788 | 267.8062 | -30.62 | 29.51 | 14.29 | 107.44 |
XTE_J1752-223 | 51584.857 | 268.0440 | -22.32 | 1.83 | 3.87 | 12.42 |
XTE_J1752-280 | 51584.828 | 268.2000 | -28.00 | 19.36 | 6.99 | 24.84 |
XTE_J1755-312 | 51584.784 | 268.7820 | -31.16 | 17.50 | 4.26 | 33.69 |
XTE_J1756-342 | 51584.770 | 269.0228 | -34.21 | 2.32 | 2.65 | 5.66 |
XTE_J1757-306 | 51584.786 | 269.4130 | -30.66 | 12.85 | 4.42 | 14.97 |
XTE_J1759-220 | 51584.857 | 269.9404 | -22.03 | -12.33 | 4.26 | 22.99 |
XTE_J1805-295 | 51584.789 | 271.4045 | -29.52 | 6.11 | 4.67 | 4.67 |
XTE_J1807-294 | 51584.790 | 271.7441 | -29.40 | -4.07 | 4.39 | 10.90 |
XTE_J1812-230 | 51584.848 | 273.2000 | -23.00 | 7.55 | 2.34 | 10.76 |
XTE_J1814-338 | 51584.766 | 273.4126 | -33.77 | -1.66 | 2.59 | 3.14 |
XTE_J1817-330 | 51584.769 | 274.4250 | -33.02 | 0.58 | 1.98 | 3.09 |
XTE_J1818-245 | 51584.834 | 274.6050 | -24.54 | 1.15 | 2.02 | 6.20 |
XTE_J1819-254 | 51584.833 | 274.8300 | -25.41 | 6.38 | 0.69 | 4.87 |
XTE_J1819-254P | 51584.831 | 273.8300 | -26.41 | 13.25 | 6.43 | 5.62 |
Legend -------------------------- 12 - EXO 1722-363 18 - 4U 1728-34 20 - RXS J173251.1 35 - XTE J1743-363 55 - A1744-361 59 - SLX 1746-331 61 - 4U 1746-371 72 - XTE J1756-342 88 - SAXJ1808.4-3658 103 - 4U 1820-30 105 - R 1832-330 | |
Legend -------------------------- 4 - 4U 1711-34 10 - RXS J172006.1 13 - RXS J172525.5 15 - TERZAN 2 18 - 4U 1728-34 22 - MXB 1730-33 28 - IGR J17375-3022 31 - XTE J1739-302 36 - 1E1740.7-2942 38 - KS 1741-293 40 - EXO 1742-326 42 - 2S1742-294 45 - H1743-322 48 - SLX 1744-300 59 - SLX 1746-331 60 - 2E1746.7-3225 63 - GRS 1747-312 64 - GRS 1747-312B 65 - XTE J1751-305 71 - XTE J1755-312 74 - XTE J1757-306 83 - XTE J1805-295 103 - 4U 1820-30 195 - 4U 1820-30 | |
Legend -------------------------- 1 - XTE J1710-281 2 - XTE J1710-281P 6 - IGR J17191-2821 10 - RXS J172006.1 14 - XTE J1726-283 15 - TERZAN 2 16 - XTE J1728-295 25 - KS 1731-260 27 - GRS 1734-292 28 - IGR J17375-3022 30 - SLX 1735-269 31 - XTE J1739-302 32 - XTE J1739-285 33 - SLX 1737-282 36 - 1E1740.7-2942 38 - KS 1741-293 41 - SGR A 42 - 2S1742-294 43 - GCRT J1746-2757 46 - SAXJ1747.0-2853 48 - SLX 1744-300 51 - GX 3+1 54 - XTE J1748-288 58 - IGR J17497-2821 62 - SAXJ1750.8-2900 68 - XTE J1752-280 70 - RXS J175428.3 77 - GX 5-1 78 - GRS 1758-258 86 - 2S1803-245 93 - SAXJ1810.8-2609 100 - XTE J1818-245 101 - XTE J1819-254 102 - XTE J1819-254P 104 - GS 1826-238 193 - GX 3+1 194 - GX 5-1 | |
Legend -------------------------- 3 - OPH CLU 19 - GX 1+4 24 - XTE J1734-234 25 - KS 1731-260 37 - XTE J1744-230 67 - XTE J1752-223 69 - SAXJ1753.5-2349 75 - IGR J17586-2129 79 - GX 9+1 80 - SAXJ1802.7-2017 85 - SAXJ1806.5-2215 87 - RXS J180824.5 90 - SGR 1806-20 95 - XTE J1812-230 150 - G11.2-0.3 191 - GX 1+4 192 - GX 1+4 194 - GX 5-1 |
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Generated automatically on Fri Mar 18 23:04:40 2011 by Craig Markwardt