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 J0731.8-3010

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0731.8-3010 Swift-XRT detections in the field for 3FGL J0731.8-3010


No detected excesses found.

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 07 32 43.70 -30 18 09.41 6.21 (2.8 ± 1.0) x 10-3 12 2.377 2.733
2 07 31 39.78 -30 05 06.54 6.65 (2.4 ± 1.1) x 10-3 11 2.334 2.248
3 07 31 47.64 -30 19 52.35 6.21 (2.4 ± 1.1) x 10-3 10 2.429 2.221
4 07 31 24.16 -30 10 28.61 6.12 (2.3 ± 1.1) x 10-3 16 2.284 2.163
5 07 32 31.41 -30 20 36.31 5.40 (1.9 ± 1.1) x 10-3 13 2.564 1.808

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0731.8-3010 Swift-XRT image with known radio, optical and UV sources for 3FGL J0731.8-3010


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 J073151-301058 07 31 51.19 -30 10 59.16 0.66 NVSS
2 NVSS J073147-300708 07 31 47.59 -30 07 08.04 3.71 NVSS
3 NVSS J073156-300524 07 31 56.59 -30 05 25.08 5.23 NVSS
4 NVSS J073208-300620 07 32 08.71 -30 06 20.16 5.36 NVSS
5 NVSS J073216-301352 07 32 16.70 -30 13 51.96 5.93 NVSS
6 NVSS J073151-300215 07 31 51.79 -30 02 16.08 8.35 NVSS
TGSSADR J073151.7-300214 07 31 51.79 -30 02 13.92 8.38 GMRTAS150M
TGSSADR J073115.0-301132 07 31 15.00 -30 11 33.00 8.42 GMRTAS150M
7 NVSS J073115-301134 07 31 15.00 -30 11 35.16 8.43 NVSS
8 NVSS J073221-301757 07 32 21.41 -30 17 57.12 9.47 NVSS
TGSSADR J073224.6-301840 07 32 24.70 -30 18 41.04 10.48 GMRTAS150M
9 NVSS J073224-301840 07 32 25.01 -30 18 41.04 10.52 NVSS
10 NVSS J073231-300357 07 32 31.51 -30 03 56.88 10.54 NVSS
TGSSADR J073231.4-300356 07 32 31.51 -30 03 56.16 10.54 GMRTAS150M
11 NVSS J073059-301137 07 30 59.30 -30 11 36.96 11.80 NVSS
12 NVSS J073108-301739 07 31 08.71 -30 17 39.84 12.02 NVSS
13 NVSS J073247-301755 07 32 47.40 -30 17 54.96 13.70 NVSS
14 NVSS J073235-295929 07 32 35.11 -29 59 29.04 14.27 NVSS

Penn State University Goddard Space Flight Center Swift