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.

4FGL J2013.9-8717

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J2013.9-8717 Swift-XRT detections in the field for 4FGL J2013.9-8717

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 34 48.70 -87 17 50.04 6.41 (5.5 ± 1.3) x 10-3 19 4.003 4.143
2 20 16 54.71 -87 20 02.44 5.76 (3.1 ± 0.9) x 10-3 17 3.336 3.286

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2013.9-8717 Swift-XRT image with known radio, optical and UV sources for 4FGL J2013.9-8717


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
QORG J201442.0-871708 20 14 42.00 -87 17 08.16 0.55 QORGCAT
1 SUMSS J201447-871709 20 14 47.30 -87 17 08.88 0.62 SUMSS
2 SUMSS J201210-871406 20 12 10.99 -87 14 06.00 3.24 SUMSS
3 SUMSS J201703-871955 20 17 03.31 -87 19 54.84 3.59 SUMSS
QORG J201706.0-872004 20 17 06.00 -87 20 03.84 3.72 QORGCAT
4 PPM 378431 20 13 05.76 -87 22 06.96 5.06 PPM
5 PMN J2016-8722 20 16 07.30 -87 22 21.00 5.48 PMN
GLEAM J201613-872223 20 16 13.80 -87 22 23.16 5.54 GLEAMEGCAT
SUMSS J201614-872237 20 16 14.81 -87 22 36.84 5.77 SUMSS
6 PGC 215819 20 03 21.79 -87 18 12.96 7.56 PGC2003
7 CD-87 97 20 18 23.86 -87 10 07.32 7.69 ACRS
PPM 378438 20 18 23.95 -87 10 06.96 7.69 PPM
8 SUMSS J200544-872333 20 05 44.90 -87 23 34.08 8.62 SUMSS
9 HIP 100968 20 28 16.49 -87 28 19.56 14.93 HIPPARCOS
CD-87 98 20 28 18.02 -87 28 19.56 14.95 ACRS
SAO 258853 20 28 21.48 -87 28 18.12 14.96 SAO
PPM 378459 20 28 18.50 -87 28 19.92 14.96 PPM
HD 185975 20 28 18.89 -87 28 20.28 14.96 HIC

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