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.

2FGL J1807.7-0419

Field

Detected Excesses

Swift-XRT image of the field for 2FGL J1807.7-0419 Swift-XRT detections in the field for 2FGL J1807.7-0419

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 08 37.09 -04 26 26.33 5.35 (8 ± 2) x 10-3 30 5.398 5.154
2 18 08 06.38 -04 17 55.50 6.21 (4.8 ± 1.2) x 10-3 20 3.896 3.823
3 18 07 11.22 -04 11 15.83 7.09 (4.6 ± 1.4) x 10-3 12 3.232 3.299

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 18 07 31.33 -04 21 56.27 6.78 (3.2 ± 1.1) x 10-3 12 2.920 2.828
2 18 08 20.88 -04 23 01.53 7.48 (1.9 ± 0.9) x 10-3 8 2.188 2.117

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 2FGL J1807.7-0419 Swift-XRT image with known radio, optical and UV sources for 2FGL J1807.7-0419


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
[SPT2015] ATCA J1807-0420 18 07 26.21 -04 20 36.96 4.86 FER2FUSRID
1 NVSS J180725-042036 18 07 25.70 -04 20 36.96 4.99 NVSS
2 NVSS J180718-041225 18 07 18.41 -04 12 24.84 9.88 NVSS
TGSSADR J180718.1-041222 18 07 18.10 -04 12 23.04 9.95 GMRTAS150M
3 NVSS J180716-042827 18 07 16.51 -04 28 27.12 11.36 NVSS
4 NVSS J180706-041256 18 07 06.70 -04 12 56.16 11.75 NVSS
TGSSADR J180701.2-041304 18 07 01.30 -04 13 04.08 12.81 GMRTAS150M
5 NVSS J180701-041258 18 07 01.39 -04 12 57.96 12.84 NVSS

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