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 J1944.0-0535

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1944.0-0535 Swift-XRT detections in the field for 3FGL J1944.0-0535

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 43 33.77 -05 33 52.54 3.65 (6.9 ± 0.3) x 10-2 551 22.070 22.190
2 19 43 54.15 -05 46 36.66 4.49 (8.6 ± 1.1) x 10-3 66 7.688 7.569

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 43 43.80 -05 32 50.99 5.59 (1.5 ± 0.5) x 10-3 20 2.966 2.902
2 19 44 07.97 -05 33 15.43 5.53 (1.4 ± 0.5) x 10-3 23 3.087 2.745
3 19 44 05.91 -05 37 10.76 5.64 (10 ± 5) x 10-4 21 2.537 2.164
4 19 43 33.77 -05 33 52.54 3.65 (2 ± 13) x 10-4 551 3.928 0.129

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1944.0-0535 Swift-XRT image with known radio, optical and UV sources for 3FGL J1944.0-0535

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J194334.2-053352 19 43 34.20 -05 33 51.84 6.61 ROSAT
2 2RXS J194331.8-053411 19 43 31.87 -05 34 11.64 7.11 ROSAT
3 1RXS J194354.7-054634 19 43 54.70 -05 46 33.96 11.21 ROSAT
1RXS J194354.7-054634 19 43 54.70 -05 46 33.96 11.21 ROSAT
2RXS J194354.7-054634 19 43 54.74 -05 46 34.32 11.21 ROSAT
6dFGS J1943541-054637 19 43 54.14 -05 46 36.48 11.27 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J194333-053352 19 43 33.89 -05 33 52.92 6.68 NVSS
TGSSADR J194358.8-054245 19 43 58.90 -05 42 45.00 7.32 GMRTAS150M
2 NVSS J194358-054245 19 43 58.61 -05 42 45.00 7.33 NVSS
3 NVSS J194338-054210 19 43 38.09 -05 42 10.08 8.66 NVSS
4 NVSS J194341-052730 19 43 41.21 -05 27 30.96 9.20 NVSS
5 NVSS J194407-054433 19 44 07.20 -05 44 34.08 9.30 NVSS
6 NVSS J194317-053113 19 43 17.50 -05 31 13.08 11.38 NVSS

Penn State University Goddard Space Flight Center Swift