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 J2058.8-3903

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J2058.8-3903 Swift-XRT detections in the field for 1FGL J2058.8-3903

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 59 40.44 -38 58 43.92 3.96 (4.4 ± 0.4) x 10-2 165 13.000 12.200
2 20 59 02.46 -38 59 36.59 5.40 (6.1 ± 1.4) x 10-3 24 4.296 4.269

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 20 58 28.07 -39 07 54.36 7.09 (2.6 ± 0.9) x 10-3 12 2.968 2.999
2 20 59 09.76 -38 54 28.94 6.78 (1.5 ± 0.8) x 10-3 8 2.438 2.019

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J2058.8-3903 Swift-XRT image with known radio, optical and UV sources for 1FGL J2058.8-3903

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J205903.4-385941 20 59 03.48 -38 59 41.28 4.31 ROSAT
2RXS J205903.4-385941 20 59 03.48 -38 59 41.28 4.31 ROSAT
1RXS J205903.5-385940 20 59 03.50 -38 59 40.56 4.32 ROSAT
2 null 20 59 40.80 -38 58 43.32 10.33 ROSAT
6dFGS J2059414-385844 20 59 40.80 -38 58 43.32 10.33 ROSAT
1RXS J205941.5-385847 20 59 40.66 -38 58 30.36 10.41 ROSAT
2RXS J205941.4-385846 20 59 41.42 -38 58 46.92 10.41 ROSAT
2RXS J205941.4-385846 20 59 41.42 -38 58 46.92 10.41 ROSAT
1RXS J205941.5-385847 20 59 41.50 -38 58 47.64 10.42 ROSAT
1RXS J205941.5-385847 20 59 41.50 -38 58 46.92 10.42 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J205854-390558 20 58 54.10 -39 05 57.84 2.40 NVSS
2 NVSS J205941-385740 20 59 41.30 -38 57 41.04 10.94 NVSS

Penn State University Goddard Space Flight Center Swift