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 J1923.2-7452

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1923.2-7452 Swift-XRT detections in the field for 3FGL J1923.2-7452

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 22 42.12 -74 53 54.47 3.79 (1.00 ± 0.06) x 10-1 286 15.710 16.130

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 19 22 25.67 -74 44 35.97 6.93 (3.9 ± 1.4) x 10-3 12 2.540 2.696
2 19 25 06.01 -74 53 25.16 5.89 (3.1 ± 1.2) x 10-3 13 2.933 2.502
3 19 21 46.73 -74 46 35.59 6.52 (2.9 ± 1.2) x 10-3 12 2.507 2.405
4 19 23 26.83 -75 00 54.70 6.65 (3.0 ± 1.2) x 10-3 9 2.462 2.390

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1923.2-7452 Swift-XRT image with known radio, optical and UV sources for 3FGL J1923.2-7452

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J192244.2-745409 19 22 44.26 -74 54 09.72 2.47 ROSAT
2RXS J192244.2-745409 19 22 44.26 -74 54 09.72 2.47 ROSAT
1RXS J192244.1-745411 19 22 44.11 -74 54 11.52 2.49 ROSAT
2 1RXS J192039.4-750159 19 20 39.41 -75 01 59.52 13.67 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J192240-745348 19 22 40.20 -74 53 48.84 2.55 SUMSS
2 SUMSS J192612-750019 19 26 12.19 -75 00 19.08 13.59 SUMSS

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