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 J0813.5-0356

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0813.5-0356 Swift-XRT detections in the field for 3FGL J0813.5-0356

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 08 13 38.10 -03 57 17.16 3.88 (7.7 ± 0.6) x 10-2 216 13.740 14.040
2 08 12 58.41 -03 56 18.34 5.59 (9 ± 2) x 10-3 25 4.689 4.691

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 08 13 03.97 -04 03 16.11 7.71 (2.2 ± 1.0) x 10-3 7 2.166 2.132

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0813.5-0356 Swift-XRT image with known radio, optical and UV sources for 3FGL J0813.5-0356


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
1 NVSS J081338-035716 08 13 38.11 -03 57 15.84 1.61 NVSS
2 NVSS J081336-035206 08 13 36.00 -03 52 06.96 4.29 NVSS
GLEAM J081336-035203 08 13 36.10 -03 52 03.00 4.35 GLEAMEGCAT
3 NVSS J081338-040044 08 13 38.59 -04 00 45.00 4.64 NVSS
4 NVSS J081355-035918 08 13 55.30 -03 59 17.88 6.32 NVSS
5 NVSS J081249-035542 08 12 49.49 -03 55 41.88 10.83 NVSS
6 NVSS J081254-040208 08 12 55.01 -04 02 08.88 11.10 NVSS
GLEAM J081253-040222 08 12 53.81 -04 02 22.92 11.47 GLEAMEGCAT
7 NVSS J081402-034643 08 14 02.30 -03 46 42.96 12.09 NVSS
GLEAM J081256-040537 08 12 56.90 -04 05 38.04 12.93 GLEAMEGCAT
8 NVSS J081256-040543 08 12 56.71 -04 05 43.08 13.03 NVSS
9 NVSS J081414-040717 08 14 15.00 -04 07 18.12 15.18 NVSS

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