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.

4FGL J2007.2-3157

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2007.2-3157 Swift-XRT detections in the field for 4FGL J2007.2-3157

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 07 46.61 -31 56 29.55 5.89 (4.5 ± 1.2) x 10-3 21 4.058 3.842
2 20 07 35.78 -31 55 50.08 6.04 (4.0 ± 1.1) x 10-3 18 3.568 3.600
3 20 07 33.02 -32 00 48.42 6.21 (4.3 ± 1.2) x 10-3 16 3.464 3.521
4 20 07 45.59 -31 45 31.41 8.27 (8 ± 2) x 10-3 9 2.525 3.464

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2007.2-3157 Swift-XRT image with known radio, optical and UV sources for 4FGL J2007.2-3157

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1BMW 200748.7-315158 20 07 48.70 -31 51 57.96 9.05 ROSAT
2 XMMSL2 J200745.4-314522 20 07 45.43 -31 45 22.32 13.64 XMM-NEWTON
XMMSL2 J200745.4-314522 20 07 45.43 -31 45 22.32 13.64 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J200713-315332 20 07 13.20 -31 53 33.00 3.76 NVSS
2 NVSS J200645-315816 20 06 45.50 -31 58 17.04 6.18 NVSS
TGSSADR J200645.4-315818 20 06 45.41 -31 58 18.12 6.19 GMRTAS150M
SUMSS J200645-315816 20 06 45.41 -31 58 17.04 6.19 SUMSS
GLEAM J200645-315807 20 06 45.19 -31 58 08.04 6.21 GLEAMEGCAT
3 NVSS J200706-320352 20 07 06.50 -32 03 51.84 6.77 NVSS
4 PPM 751229 20 07 15.53 -31 49 47.64 7.51 PPM
5 SAO 211826 20 07 31.61 -31 50 30.48 7.73 SAO
CD-3215720 20 07 31.85 -31 50 28.68 7.78 ACRS
PPM 299807 20 07 31.85 -31 50 28.32 7.79 PPM
6 WDS J20075-3150 20 07 30.00 -31 49 59.88 8.03 WDS
7 926- 37 20 06 40.54 -32 03 07.92 9.22 NLTT
8 WDS J20070-3147 20 07 00.00 -31 46 59.88 10.73 WDS
TGSSADR J200756.7-314820 20 07 56.81 -31 48 20.16 12.73 GMRTAS150M
9 NVSS J200756-314821 20 07 56.90 -31 48 20.88 12.73 NVSS
GLEAM J200756-314817 20 07 56.71 -31 48 16.92 12.75 GLEAMEGCAT
SUMSS J200756-314817 20 07 56.90 -31 48 16.92 12.78 SUMSS
10 NVSS J200806-315008 20 08 07.01 -31 50 08.16 13.29 NVSS
TGSSADR J200806.5-314953 20 08 06.50 -31 49 53.04 13.35 GMRTAS150M
SUMSS J200807-315000 20 08 07.20 -31 49 59.88 13.40 SUMSS
11 LHS 3524 20 07 48.26 -31 45 32.04 13.81 REVISEDLHS

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