Swift-XRT Survey of Fermi Unassociated Sources


These results are part of the Swift program to follow-up Fermi unassociated sources in an attempt to find X-ray counterparts to the unidentified gamma-ray sources. As new observations are performed, these pages will be updated in nearly real time. Please use these results as a guide and proceed with caution when using them in a publication since they are the result of an automated analysis.

When using these data and results in publications, please reference M.C. Stroh & A.D. Falcone 2013, ApJS, 207, 28; arXiv: 1305.4949 for a description of many of the analysis techniques used to reduce these data (note: a more detailed paper describing the complete data set and analysis is forthcoming). Please contact Abe Falcone and Michael Stroh at unassociated@swift.psu.edu if you have any questions about the program or the analysis, or to simply to let us know that you've made use of these data.


Caution: For completeness, sources are listed if the "detection" exceeds 3 sigma. The significances and images are shown so you can make more stringent significance cuts, if desired.

1FGL J0540.4-0737c

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J0540.4-0737c Swift-XRT detections in the field for 1FGL J0540.4-0737c

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 39 58.69 -07 37 19.82 5.24 (7 ± 2) x 10-3 29 5.063 4.504
2 05 40 27.20 -07 25 49.07 6.12 (5.7 ± 1.4) x 10-3 20 4.196 4.233

Rejected Excesses (Due to Overlaps or SNR(Sosta) < 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 40 32.65 -07 39 28.16 7.71 (2.5 ± 1.0) x 10-3 10 2.678 2.679
2 05 41 04.67 -07 45 41.86 7.27 (2.4 ± 0.9) x 10-3 10 2.967 2.515

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0540.4-0737c Swift-XRT image with known radio, optical and UV sources for 1FGL J0540.4-0737c

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2XMMi J054031.1-073701 05 40 31.20 -07 37 01.56 0.75 XMM-NEWTON
2 2XMMi J054032.9-073728 05 40 32.98 -07 37 28.56 0.94 XMM-NEWTON
3 2XMMi J054027.8-073924 05 40 27.84 -07 39 24.84 1.86 XMM-NEWTON
4 2XMMi J054037.7-073751 05 40 37.78 -07 37 51.96 2.14 XMM-NEWTON
5 2XMMi J054035.5-073947 05 40 35.54 -07 39 47.88 2.71 XMM-NEWTON
6 2XMMi J054039.5-073511 05 40 39.55 -07 35 11.76 3.51 XMM-NEWTON
7 2XMMi J054044.7-073804 05 40 44.71 -07 38 04.56 3.87 XMM-NEWTON
8 2XMMi J054043.9-073558 05 40 43.92 -07 35 58.20 3.99 XMM-NEWTON
9 2XMMi J054018.4-074221 05 40 18.46 -07 42 21.60 5.46 XMM-NEWTON
10 2XMMi J054051.7-073713 05 40 51.74 -07 37 13.44 5.60 XMM-NEWTON
11 2XMMi J054022.9-074257 05 40 22.92 -07 42 57.96 5.60 XMM-NEWTON
12 2XMMi J054013.7-074156 05 40 13.80 -07 41 56.40 5.79 XMM-NEWTON
13 2XMMi J054033.4-073150 05 40 33.48 -07 31 50.52 5.85 XMM-NEWTON
14 2XMMi J054042.3-074314 05 40 42.31 -07 43 14.52 6.52 XMM-NEWTON
15 2XMMi J054013.8-073216 05 40 13.85 -07 32 16.80 6.53 XMM-NEWTON
16 2XMMi J054037.5-074358 05 40 37.58 -07 43 58.08 6.71 XMM-NEWTON
17 1RXS J054001.9-073755 05 40 01.90 -07 37 55.56 6.78 ROSAT
18 2XMMi J054051.1-073321 05 40 51.12 -07 33 21.96 6.88 XMM-NEWTON
19 2XMMi J054051.9-074144 05 40 52.01 -07 41 44.52 7.01 XMM-NEWTON
1WGA J0539.9-0737 05 39 59.90 -07 37 08.40 7.28 ROSAT
20 2XMMi J053959.2-073733 05 39 59.26 -07 37 32.88 7.42 XMM-NEWTON
2RXP J053958.9-073720 05 39 58.90 -07 37 19.92 7.52 ROSAT
2RXP J053958.8-073721 05 39 58.80 -07 37 21.00 7.54 ROSAT
1WGA J0539.9-0737 05 39 58.30 -07 37 08.76 7.67 ROSAT
2XMMi J053958.2-073712 05 39 58.25 -07 37 12.72 7.68 XMM-NEWTON
1WGA J0540.0-0742 05 40 04.20 -07 42 54.36 8.16 ROSAT
21 2XMMi J054044.3-073017 05 40 44.35 -07 30 17.64 8.20 XMM-NEWTON
22 2XMMi J054044.1-074509 05 40 44.16 -07 45 09.72 8.43 XMM-NEWTON
2XMMi J054044.6-072954 05 40 44.64 -07 29 54.60 8.58 XMM-NEWTON
23 2XMMi J054015.6-072940 05 40 15.65 -07 29 40.20 8.61 XMM-NEWTON
24 2XMMi J054059.4-073317 05 40 59.40 -07 33 18.00 8.63 XMM-NEWTON
25 2XMMi J054002.6-074310 05 40 02.62 -07 43 10.92 8.64 XMM-NEWTON
26 2XMMi J054056.2-073147 05 40 56.23 -07 31 47.64 8.85 XMM-NEWTON
27 2XMMi J053954.6-074024 05 39 54.62 -07 40 23.88 9.02 XMM-NEWTON
28 2XMMi J053956.3-073334 05 39 56.35 -07 33 34.20 9.08 XMM-NEWTON
2XMMi J053956.3-073334 05 39 56.30 -07 33 34.20 9.09 XMM-NEWTON
29 2XMMi J054042.5-074606 05 40 42.55 -07 46 06.96 9.14 XMM-NEWTON
30 2XMMi J054002.0-074347 05 40 01.99 -07 43 47.28 9.16 XMM-NEWTON
31 2XMMi J053959.9-074311 05 39 59.95 -07 43 11.64 9.16 XMM-NEWTON
32 2XMMi J053956.1-074202 05 39 56.14 -07 42 02.88 9.33 XMM-NEWTON
33 2XMMi J054014.2-072851 05 40 14.28 -07 28 50.88 9.49 XMM-NEWTON
2XMMi J054014.7-072847 05 40 14.71 -07 28 47.64 9.50 XMM-NEWTON
34 2XMMi J054024.0-074719 05 40 24.02 -07 47 20.04 9.83 XMM-NEWTON
35 2XMMi J053958.7-073112 05 39 58.75 -07 31 13.08 9.88 XMM-NEWTON
2XMMi J053958.7-073112 05 39 58.73 -07 31 13.08 9.88 XMM-NEWTON
36 2XMMi J054058.1-073043 05 40 58.10 -07 30 43.20 9.92 XMM-NEWTON
37 2XMMi J054108.9-073912 05 41 08.98 -07 39 11.88 9.99 XMM-NEWTON
38 2XMMi J054049.2-074633 05 40 49.25 -07 46 33.60 10.25 XMM-NEWTON
39 2XMMi J054110.6-073845 05 41 10.68 -07 38 45.60 10.35 XMM-NEWTON
40 2XMMi J054038.4-074745 05 40 38.42 -07 47 45.96 10.43 XMM-NEWTON
41 2XMMi J054104.0-074338 05 41 04.06 -07 43 38.28 10.54 XMM-NEWTON
42 2XMMi J054025.8-074815 05 40 25.87 -07 48 15.48 10.70 XMM-NEWTON
43 2XMMi J054019.1-072657 05 40 18.96 -07 26 59.64 10.90 XMM-NEWTON
2XMMi J054019.1-072657 05 40 19.22 -07 26 57.12 10.92 XMM-NEWTON
44 2XMMi J054007.9-072742 05 40 07.94 -07 27 42.48 11.20 XMM-NEWTON
45 2XMMi J054006.2-074743 05 40 06.22 -07 47 43.44 11.62 XMM-NEWTON
46 2XMMi J054020.2-072607 05 40 20.28 -07 26 07.44 11.68 XMM-NEWTON
47 2XMMi J054002.6-074716 05 40 02.66 -07 47 16.08 11.70 XMM-NEWTON
48 2XMMi J053950.9-074428 05 39 51.00 -07 44 28.32 11.71 XMM-NEWTON
49 2XMMi J054043.8-074845 05 40 43.82 -07 48 45.36 11.74 XMM-NEWTON
50 2XMMi J054005.1-072727 05 40 05.14 -07 27 27.72 11.75 XMM-NEWTON
51 2XMMi J054027.1-072545 05 40 27.19 -07 25 45.84 11.83 XMM-NEWTON
52 2XMMi J054116.3-073537 05 41 16.32 -07 35 37.68 11.84 XMM-NEWTON
2XMMi J054027.1-072545 05 40 27.19 -07 25 45.48 11.84 XMM-NEWTON
2XMMi J054005.2-072719 05 40 05.26 -07 27 19.80 11.85 XMM-NEWTON
2XMMi J054020.4-072552 05 40 20.40 -07 25 52.32 11.92 XMM-NEWTON
53 2XMMi J054104.6-074540 05 41 04.63 -07 45 39.96 11.93 XMM-NEWTON
54 2XMMi J053946.9-074318 05 39 46.94 -07 43 18.48 11.93 XMM-NEWTON
2XMMi J054104.6-074540 05 41 04.63 -07 45 41.40 11.94 XMM-NEWTON
55 2XMMi J053945.2-074236 05 39 45.31 -07 42 36.00 11.98 XMM-NEWTON
56 2XMMi J054017.1-074915 05 40 17.16 -07 49 14.88 12.04 XMM-NEWTON
1WGA J0541.0-0745 05 41 05.11 -07 45 44.28 12.06 ROSAT
57 1RXS J054108.4-074449 05 41 08.40 -07 44 49.56 12.11 ROSAT
2XMMi J054106.3-074539 05 41 06.31 -07 45 38.88 12.22 XMM-NEWTON
2XMMi J054106.3-074539 05 41 06.31 -07 45 39.24 12.23 XMM-NEWTON
58 1WGA J0541.1-0745 05 41 06.70 -07 45 38.52 12.29 ROSAT
59 2XMMi J053940.7-073437 05 39 40.90 -07 34 36.48 12.34 XMM-NEWTON
2RXP J054109.2-074502 05 41 09.19 -07 45 02.16 12.39 ROSAT
60 2XMMi J053946.4-074405 05 39 46.42 -07 44 05.64 12.44 XMM-NEWTON
61 2XMMi J053955.6-074652 05 39 55.68 -07 46 52.68 12.46 XMM-NEWTON
2RXP J054106.7-074555 05 41 06.70 -07 45 55.08 12.47 ROSAT
62 2XMMi J054104.3-074640 05 41 04.32 -07 46 40.08 12.57 XMM-NEWTON
2XMMi J054104.3-074640 05 41 04.39 -07 46 40.80 12.59 XMM-NEWTON
63 2XMMi J054057.5-074809 05 40 57.53 -07 48 09.36 12.69 XMM-NEWTON
2XMMi J054057.5-074809 05 40 57.55 -07 48 09.36 12.69 XMM-NEWTON
1WGA J0541.2-0743 05 41 15.79 -07 43 04.44 12.78 ROSAT
2RXP J053942.2-073217 05 39 42.19 -07 32 17.16 12.80 ROSAT
64 2XMMi J053941.8-073220 05 39 41.90 -07 32 20.76 12.84 XMM-NEWTON
2XMMi J053941.8-073220 05 39 41.88 -07 32 20.76 12.85 XMM-NEWTON
1WGA J0539.7-0732 05 39 42.10 -07 32 10.68 12.87 ROSAT
65 2XMMi J053947.2-074516 05 39 47.28 -07 45 15.84 12.92 XMM-NEWTON
66 2XMMi J054116.7-074300 05 41 16.78 -07 43 00.12 12.97 XMM-NEWTON
67 2XMMi J053954.7-072746 05 39 54.72 -07 27 46.08 13.02 XMM-NEWTON
68 2XMMi J054105.4-074708 05 41 05.30 -07 47 08.52 13.08 XMM-NEWTON
2XMMi J054105.4-074708 05 41 05.47 -07 47 08.16 13.11 XMM-NEWTON
69 2XMMi J054059.8-074817 05 40 59.88 -07 48 16.92 13.12 XMM-NEWTON
2XMMi J054059.8-074817 05 40 59.90 -07 48 18.36 13.14 XMM-NEWTON
70 2XMMi J054116.6-073129 05 41 16.61 -07 31 29.28 13.24 XMM-NEWTON
2XMMi J054107.0-074716 05 41 06.98 -07 47 15.72 13.46 XMM-NEWTON
2XMMi J054107.0-074716 05 41 07.06 -07 47 16.44 13.48 XMM-NEWTON
71 2XMMi J054108.3-072803 05 41 08.33 -07 28 03.72 13.59 XMM-NEWTON
72 2XMMi J054111.7-074817 05 41 11.78 -07 48 17.64 15.03 XMM-NEWTON
73 2XMMi J053951.1-074924 05 39 51.10 -07 49 24.24 15.12 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J054025-073748 05 40 25.51 -07 37 48.00 0.94 NVSS
QORG J054025.4-073741 05 40 25.39 -07 37 41.16 0.95 QORGCAT
2 HIP 26709 05 40 32.62 -07 39 33.84 2.15 HIPPARCOS
HD 37747 05 40 32.64 -07 39 33.84 2.15 HIC
BD-07 1148 05 40 32.64 -07 39 34.20 2.15 ACRS
PPM 188337 05 40 32.64 -07 39 34.20 2.16 PPM
SAO 132442 05 40 32.52 -07 39 35.64 2.17 SAO
3 QORG J053958.2-073713 05 39 58.20 -07 37 13.08 7.69 QORGCAT
4 REIPURTH 50 05 40 29.95 -07 28 29.64 9.10 HBC
5 NVSS J054011-072922 05 40 11.90 -07 29 22.92 9.26 NVSS
6 NVSS J054107-073250 05 41 07.10 -07 32 49.92 10.52 NVSS
7 PMN J0540-0728 05 40 09.70 -07 28 00.12 10.74 PMN
8 NVSS J053957-074522 05 39 57.41 -07 45 23.04 11.08 NVSS
9 NVSS J054004-072810 05 40 04.10 -07 28 09.84 11.30 NVSS
10 QORG J054027.3-072544 05 40 27.31 -07 25 44.04 11.87 QORGCAT
11 NVSS J054005-072714 05 40 05.30 -07 27 15.12 11.92 NVSS
12 NVSS J053950-074445 05 39 50.21 -07 44 44.88 12.03 NVSS
VLSS J0540.0-0726 05 40 05.11 -07 26 57.84 12.19 VLSS
13 QORG J053941.8-073221 05 39 41.81 -07 32 21.12 12.86 QORGCAT
14 NVSS J054105-072812 05 41 05.21 -07 28 13.08 12.95 NVSS
15 NVSS J053945-074807 05 39 45.41 -07 48 06.84 15.12 NVSS
16 PPM 188353 05 41 17.16 -07 27 57.60 15.30 PPM

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