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 J2305.8+1658

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J2305.8+1658 Swift-XRT detections in the field for 3FGL J2305.8+1658


No detected excesses found.

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 23 06 20.82 +17 05 14.32 6.65 (2.4 ± 1.0) x 10-3 8 2.517 2.314
2 23 06 25.76 +17 06 53.37 6.93 (1.8 ± 0.9) x 10-3 8 2.178 2.094
3 23 06 27.41 +17 08 55.93 6.93 (1.9 ± 0.9) x 10-3 7 2.395 2.040

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2305.8+1658 Swift-XRT image with known radio, optical and UV sources for 3FGL J2305.8+1658


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 J230536+165545 23 05 36.50 +16 55 45.84 4.98 NVSS
2 NVSS J230551+165335 23 05 51.10 +16 53 35.88 5.08 NVSS
TGSSADR J230550.8+165335 23 05 50.90 +16 53 35.16 5.10 GMRTAS150M
3 NVSS J230522+170204 23 05 22.01 +17 02 04.92 8.25 NVSS
4 NVSS J230534+164844 23 05 34.20 +16 48 43.92 10.92 NVSS
TGSSADR J230620.9+170905 23 06 20.90 +17 09 05.04 12.33 GMRTAS150M
5 NVSS J230620+170906 23 06 20.90 +17 09 06.84 12.36 NVSS
GB6 J2306+1709 23 06 22.30 +17 08 60.00 12.44 GB6
2303+1653 23 06 20.71 +17 09 19.08 12.51 NORTH6CM

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