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 5.058 4.483
2 05 40 27.23 -07 25 49.95 6.04 (6.0 ± 1.4) x 10-3 21 4.222 4.337

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 ± 0.9) x 10-3 10 2.676 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 SOXS 788 05 40 31.20 -07 37 02.28 0.74 XMM-NEWTON
3XMM J054031.2-073700 05 40 31.25 -07 37 00.48 0.77 XMM-NEWTON
2 3XMM J054027.7-073923 05 40 27.79 -07 39 23.76 1.84 XMM-NEWTON
SOXS 787 05 40 27.79 -07 39 27.00 1.89 XMM-NEWTON
3 3XMM J054037.7-073751 05 40 37.78 -07 37 51.96 2.14 XMM-NEWTON
SOXS 791 05 40 37.80 -07 37 52.32 2.15 XMM-NEWTON
4 3XMM J054035.4-073946 05 40 35.45 -07 39 46.44 2.68 XMM-NEWTON
SOXS 789 05 40 35.59 -07 39 48.96 2.73 XMM-NEWTON
5 SOXS 793 05 40 39.50 -07 35 13.56 3.48 XMM-NEWTON
3XMM J054039.6-073511 05 40 39.65 -07 35 11.04 3.53 XMM-NEWTON
6 SOXS 800 05 40 44.71 -07 38 05.64 3.87 XMM-NEWTON
3XMM J054044.7-073804 05 40 44.74 -07 38 04.56 3.88 XMM-NEWTON
7 SOXS 796 05 40 43.90 -07 36 02.16 3.96 XMM-NEWTON
3XMM J054043.8-073557 05 40 43.87 -07 35 57.48 3.98 XMM-NEWTON
8 SOXS 802 05 40 46.51 -07 38 58.56 4.50 XMM-NEWTON
9 3XMM J054018.4-074220 05 40 18.48 -07 42 20.88 5.45 XMM-NEWTON
SOXS 781 05 40 18.41 -07 42 22.32 5.48 XMM-NEWTON
10 SOXS 805 05 40 51.70 -07 37 14.16 5.58 XMM-NEWTON
11 3XMM J054022.8-074257 05 40 22.87 -07 42 57.60 5.59 XMM-NEWTON
3XMM J054051.7-073712 05 40 51.77 -07 37 13.08 5.60 XMM-NEWTON
12 3XMM J054013.6-074155 05 40 13.66 -07 41 55.68 5.80 XMM-NEWTON
13 3XMM J054042.3-074314 05 40 42.31 -07 43 14.52 6.52 XMM-NEWTON
SOXS 795 05 40 42.31 -07 43 15.24 6.53 XMM-NEWTON
SOXS 794 05 40 42.31 -07 43 15.24 6.53 XMM-NEWTON
14 SOXS 776 05 40 13.80 -07 32 17.52 6.53 XMM-NEWTON
3XMM J054013.8-073216 05 40 13.80 -07 32 16.44 6.55 XMM-NEWTON
15 SOXS 790 05 40 37.51 -07 43 58.08 6.70 XMM-NEWTON
3XMM J054037.5-074359 05 40 37.51 -07 43 59.16 6.72 XMM-NEWTON
16 1RXS J054001.9-073755 05 40 01.90 -07 37 55.56 6.77 ROSAT
17 3XMM J054051.1-073320 05 40 51.14 -07 33 20.16 6.90 XMM-NEWTON
2RXS J054001.3-073757 05 40 01.32 -07 37 57.72 6.92 ROSAT
2RXS J054001.3-073757 05 40 01.32 -07 37 57.72 6.92 ROSAT
18 3XMM J054051.9-074144 05 40 52.01 -07 41 44.88 7.01 XMM-NEWTON
SOXS 806 05 40 52.10 -07 41 45.60 7.04 XMM-NEWTON
19 3XMM J054046.5-074320 05 40 46.54 -07 43 20.64 7.18 XMM-NEWTON
1WGA J0539.9-0737 05 39 59.90 -07 37 08.40 7.28 ROSAT
20 SOXS 761 05 39 59.30 -07 37 34.32 7.41 XMM-NEWTON
3XMM J053959.2-073732 05 39 59.23 -07 37 32.16 7.43 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
3XMM J053958.2-073712 05 39 58.25 -07 37 12.36 7.68 XMM-NEWTON
SOXS 758 05 39 58.20 -07 37 15.24 7.69 XMM-NEWTON
1WGA J0540.0-0742 05 40 04.20 -07 42 54.36 8.16 ROSAT
21 SOXS 798 05 40 44.59 -07 30 20.52 8.19 XMM-NEWTON
3XMM J054044.4-073016 05 40 44.47 -07 30 16.20 8.24 XMM-NEWTON
22 3XMM J054044.1-074508 05 40 44.18 -07 45 09.00 8.42 XMM-NEWTON
SOXS 797 05 40 44.21 -07 45 11.16 8.45 XMM-NEWTON
SOXS 799 05 40 44.71 -07 29 54.96 8.58 XMM-NEWTON
3XMM J054044.6-072953 05 40 44.64 -07 29 53.52 8.60 XMM-NEWTON
23 3XMM J054015.5-072939 05 40 15.60 -07 29 39.84 8.62 XMM-NEWTON
24 SOXS 811 05 40 59.40 -07 33 18.36 8.62 XMM-NEWTON
25 3XMM J054002.5-074310 05 40 02.59 -07 43 10.56 8.64 XMM-NEWTON
SOXS 765 05 40 02.59 -07 43 12.72 8.66 XMM-NEWTON
26 SOXS 807 05 40 56.21 -07 31 49.08 8.83 XMM-NEWTON
3XMM J054056.2-073146 05 40 56.28 -07 31 46.92 8.87 XMM-NEWTON
27 3XMM J053956.2-073335 05 39 56.33 -07 33 34.92 9.08 XMM-NEWTON
3XMM J053956.2-073335 05 39 56.26 -07 33 35.64 9.09 XMM-NEWTON
SOXS 756 05 39 56.11 -07 33 38.16 9.11 XMM-NEWTON
28 3XMM J054042.4-074605 05 40 42.50 -07 46 05.88 9.12 XMM-NEWTON
SOXS 755 05 39 56.11 -07 33 34.92 9.13 XMM-NEWTON
29 3XMM J053952.7-073915 05 39 52.75 -07 39 15.48 9.19 XMM-NEWTON
30 3XMM J053956.2-074208 05 39 56.23 -07 42 08.28 9.35 XMM-NEWTON
31 SOXS 778 05 40 14.71 -07 28 50.88 9.46 XMM-NEWTON
SOXS 777 05 40 14.50 -07 28 49.44 9.49 XMM-NEWTON
3XMM J054014.5-072847 05 40 14.45 -07 28 49.44 9.50 XMM-NEWTON
3XMM J054014.5-072847 05 40 14.69 -07 28 46.92 9.52 XMM-NEWTON
32 SOXS 759 05 39 58.70 -07 31 14.52 9.87 XMM-NEWTON
3XMM J053958.7-073111 05 39 58.82 -07 31 12.00 9.88 XMM-NEWTON
SOXS 760 05 39 58.80 -07 31 11.64 9.88 XMM-NEWTON
3XMM J053958.7-073111 05 39 58.70 -07 31 11.64 9.90 XMM-NEWTON
33 3XMM J054058.0-073044 05 40 58.61 -07 30 43.92 9.91 XMM-NEWTON
34 3XMM J054049.2-074634 05 40 49.25 -07 46 34.32 10.26 XMM-NEWTON
35 SOXS 827 05 41 10.70 -07 38 45.60 10.35 XMM-NEWTON
3XMM J054110.7-073845 05 41 10.73 -07 38 45.24 10.35 XMM-NEWTON
36 3XMM J054038.5-074746 05 40 38.54 -07 47 46.32 10.44 XMM-NEWTON
SOXS 792 05 40 38.50 -07 47 47.40 10.46 XMM-NEWTON
37 3XMM J054104.0-074338 05 41 04.70 -07 43 38.28 10.55 XMM-NEWTON
SOXS 815 05 41 04.10 -07 43 39.36 10.56 XMM-NEWTON
38 SOXS 808 05 40 56.90 -07 29 31.56 10.59 XMM-NEWTON
39 SOXS 782 05 40 19.01 -07 26 59.64 10.90 XMM-NEWTON
3XMM J054019.1-072658 05 40 19.20 -07 26 59.28 10.90 XMM-NEWTON
3XMM J054019.1-072658 05 40 19.27 -07 26 57.84 10.91 XMM-NEWTON
SOXS 783 05 40 19.20 -07 26 57.84 10.91 XMM-NEWTON
40 3XMM J054007.7-072754 05 40 07.73 -07 27 55.08 11.04 XMM-NEWTON
3XMM J054007.9-072742 05 40 07.94 -07 27 42.48 11.20 XMM-NEWTON
SOXS 772 05 40 07.90 -07 27 42.12 11.21 XMM-NEWTON
41 3XMM J054006.3-074741 05 40 06.31 -07 47 41.64 11.59 XMM-NEWTON
42 3XMM J054023.8-072600 05 40 23.88 -07 26 00.24 11.66 XMM-NEWTON
43 3XMM J054020.3-072607 05 40 20.35 -07 26 07.44 11.68 XMM-NEWTON
44 3XMM J054002.3-074711 05 40 02.40 -07 47 11.76 11.68 XMM-NEWTON
SOXS 764 05 40 02.40 -07 47 12.12 11.68 XMM-NEWTON
45 3XMM J053950.9-074428 05 39 50.95 -07 44 27.96 11.71 XMM-NEWTON
SOXS 784 05 40 20.50 -07 26 04.20 11.72 XMM-NEWTON
46 3XMM J053944.2-074116 05 39 44.28 -07 41 16.80 11.73 XMM-NEWTON
SOXS 748 05 39 50.90 -07 44 30.12 11.74 XMM-NEWTON
47 3XMM J054043.7-074846 05 40 43.73 -07 48 46.44 11.75 XMM-NEWTON
48 3XMM J054005.2-072721 05 40 05.11 -07 27 24.84 11.80 XMM-NEWTON
49 SOXS 829 05 41 16.30 -07 35 37.68 11.83 XMM-NEWTON
50 2XMMi J054027.1-072545 05 40 27.19 -07 25 45.84 11.84 XMM-NEWTON
SOXS 785 05 40 27.31 -07 25 45.84 11.84 XMM-NEWTON
3XMM J054005.2-072721 05 40 05.26 -07 27 20.52 11.84 XMM-NEWTON
3XMM J054116.3-073536 05 41 16.32 -07 35 36.60 11.84 XMM-NEWTON
3XMM J054027.2-072545 05 40 27.26 -07 25 45.12 11.85 XMM-NEWTON
SOXS 766 05 40 05.30 -07 27 19.44 11.85 XMM-NEWTON
SOXS 786 05 40 27.31 -07 25 44.76 11.85 XMM-NEWTON
3XMM J054027.2-072545 05 40 27.26 -07 25 44.40 11.86 XMM-NEWTON
51 SOXS 817 05 41 04.51 -07 45 41.40 11.92 XMM-NEWTON
3XMM J054020.3-072552 05 40 20.35 -07 25 52.32 11.92 XMM-NEWTON
3XMM J054104.6-074540 05 41 04.61 -07 45 40.32 11.93 XMM-NEWTON
3XMM J054104.6-074540 05 41 04.63 -07 45 40.32 11.93 XMM-NEWTON
52 3XMM J053946.9-074318 05 39 46.92 -07 43 18.12 11.93 XMM-NEWTON
2XMMi J054104.6-074540 05 41 04.63 -07 45 40.68 11.93 XMM-NEWTON
SOXS 818 05 41 04.61 -07 45 41.76 11.94 XMM-NEWTON
SOXS 743 05 39 46.70 -07 43 21.00 12.00 XMM-NEWTON
53 3XMM J054017.2-074915 05 40 17.23 -07 49 15.24 12.04 XMM-NEWTON
1WGA J0541.0-0745 05 41 05.11 -07 45 44.28 12.06 ROSAT
SOXS 779 05 40 17.21 -07 49 17.40 12.07 XMM-NEWTON
54 1RXS J054108.4-074449 05 41 08.40 -07 44 49.56 12.11 ROSAT
SOXS 821 05 41 06.19 -07 45 38.52 12.20 XMM-NEWTON
3XMM J054106.2-074538 05 41 06.22 -07 45 39.24 12.21 XMM-NEWTON
3XMM J054106.2-074538 05 41 06.31 -07 45 38.16 12.22 XMM-NEWTON
2XMMi J054106.3-074539 05 41 06.31 -07 45 39.24 12.23 XMM-NEWTON
SOXS 822 05 41 06.31 -07 45 40.32 12.24 XMM-NEWTON
55 1WGA J0541.1-0745 05 41 06.70 -07 45 38.52 12.29 ROSAT
56 3XMM J053940.8-073436 05 39 40.92 -07 34 36.12 12.33 XMM-NEWTON
SOXS 736 05 39 40.80 -07 34 40.08 12.35 XMM-NEWTON
2RXP J054109.2-074502 05 41 09.19 -07 45 02.16 12.39 ROSAT
57 3XMM J053955.7-074652 05 39 55.73 -07 46 51.96 12.45 XMM-NEWTON
SOXS 754 05 39 55.80 -07 46 54.12 12.46 XMM-NEWTON
2RXP J054106.7-074555 05 41 06.70 -07 45 55.08 12.47 ROSAT
58 3XMM J054104.4-074640 05 41 04.42 -07 46 41.16 12.60 XMM-NEWTON
SOXS 816 05 41 04.39 -07 46 41.52 12.60 XMM-NEWTON
59 3XMM J054057.5-074809 05 40 57.46 -07 48 09.00 12.67 XMM-NEWTON
SOXS 809 05 40 57.60 -07 48 09.00 12.69 XMM-NEWTON
3XMM J054057.5-074809 05 40 57.60 -07 48 09.00 12.69 XMM-NEWTON
SOXS 810 05 40 57.79 -07 48 07.56 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
60 3XMM J053941.8-073220 05 39 41.93 -07 32 21.12 12.83 XMM-NEWTON
SOXS 738 05 39 41.90 -07 32 20.76 12.84 XMM-NEWTON
3XMM J053941.8-073220 05 39 41.88 -07 32 20.76 12.85 XMM-NEWTON
SOXS 737 05 39 41.81 -07 32 22.56 12.85 XMM-NEWTON
1WGA J0539.7-0732 05 39 42.10 -07 32 10.68 12.87 ROSAT
61 3XMM J054105.3-072818 05 41 05.38 -07 28 18.48 12.90 XMM-NEWTON
62 3XMM J054116.7-074300 05 41 16.80 -07 43 00.12 12.97 XMM-NEWTON
SOXS 830 05 41 16.80 -07 43 01.20 12.98 XMM-NEWTON
63 SOXS 752 05 39 54.91 -07 27 44.64 13.01 XMM-NEWTON
3XMM J053954.8-072745 05 39 54.82 -07 27 45.36 13.01 XMM-NEWTON
SOXS 819 05 41 05.40 -07 47 06.72 13.08 XMM-NEWTON
64 3XMM J054105.4-074708 05 41 05.40 -07 47 08.52 13.10 XMM-NEWTON
SOXS 820 05 41 05.40 -07 47 08.52 13.10 XMM-NEWTON
3XMM J054105.4-074708 05 41 05.47 -07 47 08.16 13.11 XMM-NEWTON
65 3XMM J054059.8-074817 05 40 59.88 -07 48 16.56 13.11 XMM-NEWTON
SOXS 812 05 40 59.90 -07 48 16.56 13.12 XMM-NEWTON
3XMM J054059.8-074817 05 40 59.81 -07 48 18.72 13.13 XMM-NEWTON
SOXS 813 05 41 00.00 -07 48 18.00 13.15 XMM-NEWTON
66 3XMM J054116.6-073126 05 41 16.66 -07 31 26.40 13.27 XMM-NEWTON
3XMM J054107.0-074715 05 41 07.10 -07 47 15.72 13.46 XMM-NEWTON
3XMM J054107.0-074715 05 41 07.01 -07 47 16.08 13.47 XMM-NEWTON
SOXS 823 05 41 07.01 -07 47 16.44 13.47 XMM-NEWTON
SOXS 824 05 41 07.10 -07 47 16.80 13.49 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
TGSSADR J054025.4-073747 05 40 25.51 -07 37 48.00 0.95 GMRTAS150M
2 PCCS2 044 G211.88-19.19 05 40 49.99 -07 43 19.92 7.72 PCCS044GHZ
3 NVSS J054011-072922 05 40 11.90 -07 29 22.92 9.26 NVSS
4 PCCS2 070 G211.56-19.24 05 40 07.61 -07 28 51.96 10.24 PCCS070GHZ
5 NVSS J054107-073250 05 41 07.10 -07 32 49.92 10.52 NVSS
TGSSADR J054107.2-073250 05 41 07.20 -07 32 49.92 10.55 GMRTAS150M
GLEAM J054107-073248 05 41 07.70 -07 32 48.84 10.67 GLEAMEGCAT
6 PMN J0540-0728 05 40 09.70 -07 28 00.12 10.74 PMN
7 NVSS J053957-074522 05 39 57.41 -07 45 23.04 11.08 NVSS
8 NVSS J054004-072810 05 40 04.10 -07 28 09.84 11.30 NVSS
9 GLEAM J053953-074500 05 39 53.40 -07 45 01.08 11.56 GLEAMEGCAT
TGSSADR J054004.5-072746 05 40 04.51 -07 27 46.08 11.56 GMRTAS150M
GLEAM J054005-072717 05 40 05.30 -07 27 18.00 11.88 GLEAMEGCAT
10 NVSS J054005-072714 05 40 05.30 -07 27 15.12 11.92 NVSS
TGSSADR J053950.6-074443 05 39 50.59 -07 44 44.16 11.93 GMRTAS150M
TGSSADR J054005.5-072705 05 40 05.59 -07 27 06.12 12.02 GMRTAS150M
11 NVSS J053950-074445 05 39 50.21 -07 44 44.88 12.03 NVSS
VLSSr J054004.7-072650 05 40 04.70 -07 26 49.92 12.35 VLSSR
12 NVSS J054105-072812 05 41 05.21 -07 28 13.08 12.95 NVSS
13 GBS-VLA J054113.55-074445.2 05 41 13.51 -07 44 44.88 13.12 VLAGBSORI
14 NVSS J053945-074807 05 39 45.41 -07 48 06.84 15.12 NVSS

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