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 J0731.9-1517

Field

Detected Excesses
Swift-XRT image of the field for 1FGL J0731.9-1517 Swift-XRT detections in the field for 1FGL J0731.9-1517

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 07 32 18.89 -15 12 58.07 5.89 (3.2 ± 1.0) x 10-3 18 3.537 3.241
2 07 31 31.80 -15 13 04.13 6.52 (2.8 ± 0.9) x 10-3 12 3.102 3.009

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0731.9-1517 Swift-XRT image with known radio, optical and UV sources for 1FGL J0731.9-1517


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J073159-151442 07 31 59.09 -15 14 43.08 2.68 NVSS
2 NVSS J073134-151931 07 31 34.30 -15 19 32.16 5.64 NVSS
3 NVSS J073218-151256 07 32 18.79 -15 12 56.16 7.04 NVSS
TGSSADR J073218.7-151256 07 32 18.79 -15 12 56.16 7.04 GMRTAS150M
4 NVSS J073235-150957 07 32 35.69 -15 09 57.96 12.10 NVSS
TGSSADR J073235.8-150958 07 32 35.81 -15 09 59.04 12.10 GMRTAS150M
PMN J0731-1524 07 31 10.70 -15 24 59.04 13.33 PMN
5 NVSS J073107-152342 07 31 07.20 -15 23 42.00 13.35 NVSS
6 NVSS J073128-150534 07 31 28.30 -15 05 34.08 13.45 NVSS
7 NVSS J073110-152518 07 31 10.70 -15 25 18.84 13.53 NVSS

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