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.

3FGL J2237.9+6320

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J2237.9+6320 Swift-XRT detections in the field for 3FGL J2237.9+6320

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 22 37 04.67 +63 23 37.62 5.70 (6.0 ± 1.4) x 10-3 25 4.242 4.396
2 22 36 47.06 +63 16 06.23 6.21 (3.3 ± 1.0) x 10-3 15 3.048 3.105

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 22 36 46.69 +63 28 41.50 5.89 (2.4 ± 0.9) x 10-3 13 3.165 2.501
2 22 35 25.95 +63 19 03.72 5.82 (2.2 ± 0.9) x 10-3 16 2.412 2.418
3 22 35 25.08 +63 18 45.54 5.89 (1.9 ± 0.9) x 10-3 8 2.408 2.066
4 22 35 34.62 +63 23 01.63 5.64 (1.8 ± 0.9) x 10-3 9 2.510 2.053
5 22 35 35.10 +63 20 57.31 5.64 (8 ± 7) x 10-4 9 2.319 1.209

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2237.9+6320 Swift-XRT image with known radio, optical and UV sources for 3FGL J2237.9+6320

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J223929.1+631952 22 39 29.28 +63 19 52.68 10.50 XMM-NEWTON
2 2RXS J223638.9+632926 22 36 38.93 +63 29 26.88 12.74 ROSAT
1RXS J223638.9+632928 22 36 38.90 +63 29 27.96 12.75 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
CGPS J223735+631855 22 37 35.81 +63 18 56.16 2.49 CGPSNGPCAT
[SPT2015] VLA J2237+6318 22 37 34.99 +63 18 51.84 2.60 FER2FUSRID
1 NVSS J223733+631856 22 37 34.01 +63 18 56.88 2.67 NVSS
2 CGPS J223846+631906 22 38 46.90 +63 19 05.88 5.83 CGPSNGPCAT
3 CGPS J223636+631502 22 36 36.00 +63 15 02.88 10.25 CGPSNGPCAT
CGPS J223732+633004 22 37 31.99 +63 30 05.04 10.39 CGPSNGPCAT
4 NVSS J223731+633009 22 37 31.61 +63 30 10.08 10.47 NVSS
WN 2235.7+6314 22 37 30.91 +63 30 19.08 10.63 WENSS
5 CGPS J223639+632704 22 36 39.91 +63 27 05.04 11.03 CGPSNGPCAT
6 NVSS J223854+631020 22 38 54.50 +63 10 21.00 11.74 NVSS
CGPS J223855+631026 22 38 55.80 +63 10 26.04 11.75 CGPSNGPCAT
CGPS J223720+630816 22 37 20.59 +63 08 17.16 12.41 CGPSNGPCAT
7 NVSS J223721+630809 22 37 21.31 +63 08 08.88 12.50 NVSS
8 [SPT2015] VLA J2236+6313 22 36 17.71 +63 13 50.16 12.65 FER2FUSRID
9 CGPS J223628+632807 22 36 28.20 +63 28 08.04 12.70 CGPSNGPCAT
CGPS J223619+631316 22 36 19.10 +63 13 15.96 12.79 CGPSNGPCAT
10 NVSS J223618+631300 22 36 18.79 +63 13 00.84 12.96 NVSS
11 CGPS J223844+630809 22 38 44.30 +63 08 08.88 13.09 CGPSNGPCAT
12 CGPS J223658+633151 22 36 58.70 +63 31 51.96 13.43 CGPSNGPCAT

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