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 J1620.8-5149

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1620.8-5149 Swift-XRT detections in the field for 3FGL J1620.8-5149

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 21 36.97 -51 45 05.07 5.44 (8 ± 2) x 10-3 25 4.515 4.292

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 16 21 17.75 -51 50 41.94 5.89 (2.7 ± 1.0) x 10-3 23 2.364 2.640
2 16 19 18.60 -51 47 51.39 6.12 (2.5 ± 1.0) x 10-3 12 2.385 2.530

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1620.8-5149 Swift-XRT image with known radio, optical and UV sources for 3FGL J1620.8-5149

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J162058.3-514049 16 20 58.37 -51 40 49.08 9.09 XMM-NEWTON
2 3XMM J162045.7-514007 16 20 45.72 -51 40 08.04 9.67 XMM-NEWTON
3 3XMM J162110.1-513903 16 21 10.15 -51 39 02.88 11.24 XMM-NEWTON
4 3XMM J162046.8-513804 16 20 46.85 -51 38 04.20 11.72 XMM-NEWTON
5 3XMM J162106.2-513754 16 21 06.24 -51 37 54.48 12.19 XMM-NEWTON
6 3XMM J162140.2-513950 16 21 40.27 -51 39 50.76 12.76 XMM-NEWTON
7 2RXS J162148.2-513754 16 21 48.26 -51 37 54.84 15.04 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MGPS J162121-514234 16 21 21.31 -51 42 34.92 8.81 MGPS2
2 MGPS J162153-514859 16 21 53.71 -51 48 59.04 10.08 MGPS2
3 PMN J1621-5144 16 21 45.79 -51 44 20.04 10.39 PMN
4 MGPS J162036-520024 16 20 36.50 -52 00 24.12 10.78 MGPS2
5 MGPS J162137-513930 16 21 37.01 -51 39 29.88 12.73 MGPS2

Penn State University Goddard Space Flight Center Swift