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 J0557.7-0720

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0557.7-0720 Swift-XRT detections in the field for 3FGL J0557.7-0720


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 05 58 14.86 -07 19 53.57 7.27 (3.1 ± 1.1) x 10-3 13 2.466 2.770
2 05 57 33.46 -07 11 59.42 7.27 (2.4 ± 1.1) x 10-3 9 2.386 2.297

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0557.7-0720 Swift-XRT image with known radio, optical and UV sources for 3FGL J0557.7-0720

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J055817.0-072922 05 58 17.09 -07 29 22.56 11.49 ROSAT
2RXS J055817.0-072922 05 58 17.09 -07 29 22.56 11.49 ROSAT
1RXS J055817.0-072923 05 58 16.99 -07 29 23.64 11.50 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J055745-071901 05 57 45.60 -07 19 01.92 1.51 NVSS
2 PMN J0557-0719 05 57 40.39 -07 19 22.08 2.15 PMN
3 NVSS J055752-072235 05 57 52.39 -07 22 35.04 2.43 NVSS
4 NVSS J055737-071914 05 57 37.30 -07 19 14.16 2.89 NVSS
TGSSADR J055737.3-071914 05 57 37.30 -07 19 14.16 2.90 GMRTAS150M
GLEAM J055737-071911 05 57 37.30 -07 19 12.00 2.92 GLEAMEGCAT
5 TXS 0555-073 05 57 33.91 -07 20 24.00 3.50 TEXAS
6 NVSS J055733-072258 05 57 33.10 -07 22 59.16 4.50 NVSS
7 NVSS J055739-072648 05 57 39.41 -07 26 48.84 6.74 NVSS
8 NVSS J055724-071434 05 57 24.19 -07 14 35.16 8.29 NVSS
9 NVSS J055738-071055 05 57 38.11 -07 10 54.84 9.81 NVSS
GLEAM J055737-071049 05 57 37.90 -07 10 50.16 9.91 GLEAMEGCAT
10 NVSS J055811-071024 05 58 11.90 -07 10 23.88 11.63 NVSS
11 NVSS J055834-071311 05 58 34.90 -07 13 12.00 13.71 NVSS
12 NVSS J055836-071028 05 58 36.10 -07 10 28.92 15.54 NVSS
TGSSADR J055836.0-071026 05 58 36.10 -07 10 26.04 15.55 GMRTAS150M
GLEAM J055836-071021 05 58 36.10 -07 10 21.00 15.61 GLEAMEGCAT

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