RXTE Galactic Center Observation
| Observation Date: | 2000-02-06 |
| Mission Day: | 2227v |
| Modified Julian Day: | 51580.895 |
| Mission times: | 192490161.00- 192499381.00 |
| Scan type: | regular |
| 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 scan which occurred 07 Feb
2000.
For those of you who are getting this for the first time, we typically
have a two orbit observation which consists of both scanning and
resting at endpoints. The endpoints of the scans are mandated by
operations people to be of a certain minimum duration, and are
typically optimized so that they lie on point sources of interest.
Still, the scans are almost a perfect sawtooth pattern.
We have typically had two observations per week, and alternate the
scan pattern. Yesterday's observation had scans primarily in the
north-south direction, which I may call the "regular scan"; the next
scan will be primarily east-west, which I often call the "cross scan."
With orthogonal scans it's more straightforward to get a handle on the
diffuse emission and refine source positions.
Results are archived on the web page here
http://lheawww.gsfc.nasa.gov/users/craigm/galscan/main.html
The page is meant for collaborators' internal use, and does not
necessarily have the most up-to-date or publication quality results.
Details follow:
* Any fluxes I mention are of course approximate, in the 2-10 keV
band, and scaled to 5 PCUs.
* It probably goes without saying that SAX 1808 has become active
again. After spending all of last year below a half a mCrab, it's
now at about 10 mCrab -- a boomer by bulge scan standards.
It's a little bit frustrating since we could have detected the
source a factor of ~20 fainter. I would argue that the ASM trigger
which led to PCA observations was dubious at best, but it did lead
to PCA observations that paid off in the end.
* XTE J1723-376, which had a very *marginal* suggestion of high
frequency QPOs last year, is active again, although faint, at about
1.5 mCrab.
* KS 1731-260 is at about 5 mCrab, which is about a factor of five
fainter than I have ever seen it in the bulge scans.
* Since this is the first observation after a hiatus, here is a
status update on various sources, which don't necessarily warrant
detailed comments:
1E1740.7-2942 - near the low end of its 20-30 mCrab range.
4U 1711-34 - currently not detected
4U 1728-34 - near the lower end of its 50-200 mCrab range.
4U 1820-30 - near the middle of its 100-500 mCrab range.
GRS 1747-312 - not in outburst
GS 1826-238 - at a new high of about 41 mCrab
GX 3+1 - at a new high of about 32 mCrab
GX 5-1 - near the low end of its 1-1.5 Crab range
Rapid burster - not detected
R 1832-330 - near low end of its 5-10 mCrab range
SLX 1735-269 - at its steady-state flux of ~9 mCrab
XTE J1710-281 - not detected
XTE J1743-363 - detected
XTE J1819-254 - not detected (diffuse emission confusion)
* I am amazed, but there are no previously unidentified sources
present.
Craig
| Source | Time (MJD) | RA (2000) | DEC (2000) | Rate (ct/s/5PCU) | Error (ct/s/5PCU) | Bkg (ct/s/5PCU) |
|---|---|---|---|---|---|---|
| 1E1740.7-2942 | 51580.927 | 265.9604 | -29.75 | 159.38 | 25.37 | 308.18 |
| 1E1743.1-2843 | 51580.930 | 266.5792 | -28.72 | 266.81 | 66.90 | 100.40 |
| 2E1746.7-3225 | 51580.929 | 267.5144 | -32.43 | 7.25 | 7.49 | 18.68 |
| 2S1742-294 | 51580.929 | 266.5230 | -29.52 | 317.42 | 31.26 | 340.21 |
| 2S1803-245 | 51580.985 | 271.7090 | -24.59 | -0.90 | 5.09 | 13.25 |
| 4U_1728-34 | 51580.912 | 262.9920 | -33.83 | 679.66 | 14.17 | 35.14 |
| 4U_1820-30 | 51580.989 | 275.9280 | -30.37 | 2867.73 | 64.28 | 3.00 |
| 4U_1820-30 | 51580.992 | 275.9280 | -30.37 | 2767.38 | 26.53 | 3.00 |
| 4U_1820-30 | 51580.996 | 275.9280 | -30.37 | 2575.11 | 49.05 | 3.00 |
| A1744-361 | 51580.924 | 267.0800 | -36.12 | 0.83 | 1.85 | 15.71 |
| AX_J1749.1-2639 | 51580.957 | 267.3000 | -26.65 | -62.13 | 30.03 | 2331.63 |
| EXO_1722-363 | 51580.904 | 261.4810 | -36.41 | 24.70 | 7.27 | 22.83 |
| EXO_1742-326 | 51580.926 | 266.3690 | -32.69 | 25.88 | 7.08 | 22.15 |
| EXO_1745-248 | 51580.967 | 267.0208 | -24.78 | -3.43 | 2.54 | 16.37 |
| GCRT_J1745-3009 | 51580.928 | 266.2708 | -30.16 | 31.83 | 13.35 | 334.36 |
| GCRT_J1746-2757 | 51580.933 | 266.5417 | -27.95 | 3.30 | 12.64 | 99.69 |
| GRS_1734-292 | 51580.921 | 264.3533 | -29.18 | 65.14 | 5.73 | 17.19 |
| GRS_1747-312 | 51580.941 | 267.6900 | -31.29 | 26.05 | 10.80 | 4.01 |
| GRS_1758-258 | 51580.978 | 270.3025 | -25.74 | 176.45 | 16.28 | 2763.42 |
| GS_1826-238 | 51581.001 | 277.3623 | -23.79 | 419.96 | 2.30 | 3.33 |
| GX_1+4 | 51580.917 | 263.0090 | -24.75 | 382.23 | 15.79 | 5.58 |
| GX_1+4 | 51580.923 | 263.0090 | -24.75 | 306.98 | 14.65 | 5.58 |
| GX_3+1 | 51580.932 | 266.9830 | -26.56 | 3533.48 | 44.80 | -16.75 |
| GX_3+1 | 51580.966 | 266.9830 | -26.56 | 3260.11 | 57.26 | -16.75 |
| GX_5-1 | 51580.975 | 270.2840 | -25.08 | 10147.95 | 151.54 | 61.21 |
| GX_5-1 | 51580.979 | 270.2840 | -25.08 | 9372.79 | 49.22 | 61.21 |
| GX_5-1 | 51580.982 | 270.2840 | -25.08 | 9751.45 | 87.69 | 61.21 |
| H1743-322 | 51580.927 | 266.5700 | -32.24 | 12.51 | 5.24 | 29.90 |
| IGR_J17191-2821 | 51580.904 | 259.7700 | -28.35 | -1.81 | 2.64 | 4.93 |
| IGR_J17331-2406 | 51580.923 | 263.2833 | -24.11 | 0.84 | 3.18 | 85.98 |
| IGR_J17375-3022 | 51580.920 | 264.3946 | -30.38 | 4.17 | 7.52 | 31.30 |
| IGR_J17497-2821 | 51580.948 | 267.4041 | -28.36 | 8.60 | 17.68 | 99.15 |
| IGR_J17511-3057 | 51580.943 | 267.7875 | -30.96 | -32.17 | 15.89 | 53.61 |
| IGR_J17586-2129 | 51580.980 | 269.6440 | -21.39 | 12.58 | 3.34 | 36.83 |
| K1724-356 | 51580.906 | 261.9133 | -35.73 | -3.18 | 3.30 | 30.52 |
| KS_1731-260 | 51580.922 | 263.5539 | -26.09 | 64.59 | 5.56 | 8.88 |
| KS_1732-273 | 51580.922 | 263.9958 | -27.44 | 9.76 | 6.00 | 38.25 |
| KS_1741-293 | 51580.928 | 266.2042 | -29.35 | 176.68 | 57.84 | 393.52 |
| MXB_1730-33 | 51580.913 | 263.3498 | -33.39 | 1.58 | 8.26 | 319.83 |
| NGC_6440 | 51580.974 | 267.2195 | -20.36 | -11.81 | 17.78 | 6.39 |
| OPH_CLU | 51580.903 | 258.1580 | -23.39 | 273.33 | 2.58 | 2.94 |
| RXS_J172006.1 | 51580.901 | 260.0254 | -31.28 | 7.03 | 4.96 | 13.20 |
| RXS_J172525.5 | 51580.906 | 261.3563 | -32.95 | 45.42 | 3.58 | 15.30 |
| RXS_J173251.1 | 51580.912 | 263.2129 | -34.79 | 23.77 | 4.88 | 38.43 |
| RXS_J175428.3 | 51580.971 | 268.6179 | -26.34 | 13.92 | 6.77 | 33.48 |
| RXS_J180326.2 | 51580.980 | 270.8417 | -25.27 | -13.54 | 19.62 | 4105.50 |
| RXS_J180824.5 | 51580.987 | 272.1021 | -23.15 | 11.67 | 2.14 | 13.45 |
| R_1832-330 | 51580.998 | 278.9317 | -32.99 | 72.50 | 4.84 | 2.93 |
| SAXJ1747.0-2853 | 51580.935 | 266.7879 | -28.88 | -41.28 | 36.56 | 379.13 |
| SAXJ1750.8-2900 | 51580.948 | 267.6000 | -29.03 | 23.61 | 6.85 | 39.60 |
| SAXJ1753.5-2349 | 51580.973 | 268.3917 | -23.82 | 2.73 | 3.04 | 16.88 |
| SAXJ1806.5-2215 | 51580.987 | 271.6417 | -22.25 | 1.26 | 0.74 | 20.67 |
| SAXJ1808.4-3658 | 51580.970 | 272.1208 | -36.98 | 109.20 | 1.35 | 2.97 |
| SAXJ1808.4-365P | 51580.970 | 271.1200 | -35.50 | -5.17 | 2.33 | 3.22 |
| SAXJ1810.8-2609 | 51580.987 | 272.6850 | -26.15 | 1.18 | 2.50 | 8.44 |
| SGR_1806-20 | 51580.994 | 272.1642 | -20.41 | 4.24 | 6.11 | 28.78 |
| SGR_A | 51580.929 | 266.4000 | -29.00 | -38.76 | 83.20 | 464.81 |
| SLX_1735-269 | 51580.923 | 264.5647 | -27.00 | 88.18 | 5.45 | 17.50 |
| SLX_1737-282 | 51580.925 | 265.2360 | -28.31 | 133.97 | 16.35 | -0.56 |
| SLX_1744-300 | 51580.929 | 266.8580 | -30.04 | 283.08 | 16.02 | 182.07 |
| SLX_1746-331 | 51580.928 | 267.4608 | -33.20 | 18.47 | 4.44 | 12.65 |
| SW_J1729.9-3437 | 51580.909 | 262.5375 | -34.61 | -13.99 | 6.45 | 106.69 |
| SW_J1756.9-2508 | 51580.974 | 269.2380 | -25.11 | -6.11 | 5.06 | 494.18 |
| TERZAN_2 | 51580.911 | 261.8880 | -30.80 | 323.00 | 7.82 | 13.83 |
| WGAJ1715.3-2635 | 51580.903 | 258.8370 | -26.60 | 1.71 | 2.30 | 3.20 |
| XTE_J1710-281 | 51580.896 | 257.5500 | -28.12 | 4.51 | 3.32 | 3.16 |
| XTE_J1710-281P | 51580.897 | 258.5500 | -28.91 | -3.54 | 2.21 | 3.81 |
| XTE_J1719-291 | 51580.904 | 259.8890 | -29.06 | 1.68 | 2.87 | 4.96 |
| XTE_J1719-356 | 51580.899 | 259.9700 | -35.68 | 0.33 | 2.34 | 16.51 |
| XTE_J1720-318 | 51580.901 | 259.9961 | -31.75 | 8.98 | 5.09 | 12.92 |
| XTE_J1723-376 | 51580.899 | 260.9000 | -37.65 | 11.19 | 2.60 | 15.82 |
| XTE_J1726-283 | 51580.911 | 261.6570 | -28.30 | -3.03 | 2.61 | 8.02 |
| XTE_J1728-295 | 51580.912 | 262.1570 | -29.52 | 0.21 | 3.34 | 12.14 |
| XTE_J1734-234 | 51580.923 | 263.5280 | -23.36 | 0.68 | 0.97 | 4.71 |
| XTE_J1737-376 | 51580.913 | 264.4950 | -37.77 | 3.12 | 0.94 | 7.45 |
| XTE_J1739-285 | 51580.924 | 264.9790 | -28.48 | -30.43 | 14.98 | 122.14 |
| XTE_J1739-302 | 51580.921 | 264.7500 | -30.27 | 6.87 | 7.81 | 34.27 |
| XTE_J1743-363 | 51580.920 | 265.7415 | -36.33 | 6.94 | 0.90 | 7.91 |
| XTE_J1744-230 | 51580.947 | 266.0350 | -23.12 | 32.96 | 6.48 | 8.94 |
| XTE_J1747-274 | 51580.942 | 266.9095 | -27.44 | 23.61 | 14.49 | 324.46 |
| XTE_J1748-288 | 51580.941 | 267.0210 | -28.47 | 42.04 | 41.42 | 156.83 |
| XTE_J1751-305 | 51580.945 | 267.8062 | -30.62 | 29.58 | 10.91 | 9.92 |
| XTE_J1752-223 | 51580.973 | 268.0440 | -22.32 | 1.03 | 2.17 | 12.32 |
| XTE_J1752-280 | 51580.967 | 268.2000 | -28.00 | 19.99 | 5.10 | 25.19 |
| XTE_J1755-312 | 51580.956 | 268.7820 | -31.16 | 3.20 | 4.02 | 14.07 |
| XTE_J1756-342 | 51580.948 | 269.0228 | -34.21 | 6.24 | 2.15 | 5.56 |
| XTE_J1757-306 | 51580.969 | 269.4130 | -30.66 | 12.47 | 3.35 | 11.90 |
| XTE_J1759-220 | 51580.980 | 269.9404 | -22.03 | -0.85 | 2.32 | 22.80 |
| XTE_J1805-295 | 51580.977 | 271.4045 | -29.52 | 11.63 | 6.50 | 6.80 |
| XTE_J1807-294 | 51580.979 | 271.7441 | -29.40 | -0.77 | 6.38 | 14.54 |
| XTE_J1810-189 | 51580.994 | 272.5863 | -19.07 | -20.78 | 32.84 | 39.18 |
| XTE_J1810-197 | 51580.994 | 272.4630 | -19.73 | 0.49 | 6.77 | 31.85 |
| XTE_J1812-230 | 51580.994 | 273.2000 | -23.00 | 0.37 | 2.70 | 10.63 |
| XTE_J1814-338 | 51580.978 | 273.4126 | -33.77 | 5.89 | 3.66 | 3.04 |
| XTE_J1817-330 | 51580.984 | 274.4250 | -33.02 | 1.14 | 2.00 | 3.01 |
| XTE_J1818-245 | 51580.995 | 274.6050 | -24.54 | 5.04 | 3.32 | 6.37 |
| XTE_J1819-254 | 51580.995 | 274.8300 | -25.41 | 9.66 | 2.99 | 5.08 |
| XTE_J1819-254P | 51580.990 | 273.8300 | -26.41 | 10.11 | 3.60 | 5.50 |
|
Legend -------------------------- 1 - XTE J1710-281 3 - OPH CLU 5 - WGAJ1715.3-2635 7 - XTE J1719-291 9 - XTE J1720-318 10 - RXS J172006.1 11 - XTE J1723-376 12 - EXO 1722-363 13 - RXS J172525.5 15 - TERZAN 2 18 - 4U 1728-34 19 - GX 1+4 20 - RXS J173251.1 22 - MXB 1730-33 29 - XTE J1737-376 |
|
Legend -------------------------- 19 - GX 1+4 25 - KS 1731-260 26 - KS 1732-273 27 - GRS 1734-292 28 - IGR J17375-3022 30 - SLX 1735-269 31 - XTE J1739-302 33 - SLX 1737-282 35 - XTE J1743-363 36 - 1E1740.7-2942 37 - XTE J1744-230 38 - KS 1741-293 39 - GCRT J1745-3009 40 - EXO 1742-326 42 - 2S1742-294 43 - GCRT J1746-2757 44 - 1E1743.1-2843 45 - H1743-322 48 - SLX 1744-300 50 - XTE J1747-274 51 - GX 3+1 54 - XTE J1748-288 58 - IGR J17497-2821 59 - SLX 1746-331 60 - 2E1746.7-3225 62 - SAXJ1750.8-2900 63 - GRS 1747-312 65 - XTE J1751-305 72 - XTE J1756-342 191 - GX 1+4 |
|
Legend -------------------------- 37 - XTE J1744-230 50 - XTE J1747-274 54 - XTE J1748-288 58 - IGR J17497-2821 62 - SAXJ1750.8-2900 63 - GRS 1747-312 65 - XTE J1751-305 68 - XTE J1752-280 69 - SAXJ1753.5-2349 70 - RXS J175428.3 71 - XTE J1755-312 72 - XTE J1756-342 74 - XTE J1757-306 75 - IGR J17586-2129 77 - GX 5-1 78 - GRS 1758-258 83 - XTE J1805-295 88 - SAXJ1808.4-3658 96 - XTE J1814-338 192 - GX 3+1 193 - GX 5-1 194 - GX 5-1 |
|
Legend -------------------------- 85 - SAXJ1806.5-2215 87 - RXS J180824.5 90 - SGR 1806-20 93 - SAXJ1810.8-2609 98 - XTE J1817-330 100 - XTE J1818-245 101 - XTE J1819-254 102 - XTE J1819-254P 103 - 4U 1820-30 104 - GS 1826-238 105 - R 1832-330 150 - G11.2-0.3 195 - 4U 1820-30 196 - 4U 1820-30 |
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Generated automatically on Fri Mar 18 23:04:28 2011 by Craig Markwardt