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 J1955.7-7019

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1955.7-7019 Swift-XRT detections in the field for 3FGL J1955.7-7019

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 54 58.04 -70 18 18.95 5.53 (6 ± 2) x 10-3 21 3.867 3.520
2 19 56 38.91 -70 11 23.50 5.82 (5 ± 2) x 10-3 20 3.738 3.430
3 19 55 58.32 -70 17 03.66 6.12 (5 ± 2) x 10-3 20 3.227 3.280

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 54 10.22 -70 22 25.04 7.27 (3.1 ± 1.1) x 10-3 10 2.622 2.763
2 19 54 38.79 -70 12 54.30 6.65 (2.9 ± 1.2) x 10-3 9 2.483 2.313

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1955.7-7019 Swift-XRT image with known radio, optical and UV sources for 3FGL J1955.7-7019

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J195705.4-702914 19 57 05.21 -70 29 13.92 11.87 XMM-NEWTON
XMMSL2 J195705.4-702914 19 57 05.21 -70 29 13.92 11.87 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SPASS J195439-700950 19 54 39.89 -70 09 51.12 11.06 SPASS2P3GH
2 GLEAM J195426-701038 19 54 26.30 -70 10 39.00 11.06 GLEAMEGCAT
PMN J1954-7010 19 54 23.11 -70 10 46.92 11.12 PMN
SUMSS J195425-701037 19 54 25.39 -70 10 36.84 11.12 SUMSS
1949-703 19 54 24.70 -70 10 37.92 11.14 MRC
3 GLEAM J195802-702021 19 58 02.30 -70 20 21.12 11.38 GLEAMEGCAT
SUMSS J195803-702011 19 58 03.29 -70 20 12.12 11.45 SUMSS
ATPMN J195421.5-701024 19 54 21.50 -70 10 23.88 11.50 ATPMNCAT
4 PKS 1949-702 19 54 27.50 -70 09 56.16 11.56 DIXON
PKS J1954-7009 19 54 27.50 -70 09 56.16 11.56 PKSCAT90
5 SUMSS J195657-700807 19 56 57.60 -70 08 08.16 12.65 SUMSS

Penn State University Goddard Space Flight Center Swift