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 J1901.1+0730

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1901.1+0730 Swift-XRT detections in the field for 4FGL J1901.1+0730


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 19 00 43.34 +07 39 59.95 6.52 (5 ± 2) x 10-3 12 3.046 2.815
2 19 00 51.61 +07 23 24.22 7.97 (2.4 ± 1.3) x 10-3 8 2.169 1.855

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1901.1+0730 Swift-XRT image with known radio, optical and UV sources for 4FGL J1901.1+0730


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 BD+07 3929 19 01 00.05 +07 27 35.28 3.79 ACRS
PPM 166991 19 01 00.05 +07 27 34.92 3.79 PPM
TGSSADR J190126.7+072450 19 01 26.81 +07 24 51.12 6.73 GMRTAS150M
2 NVSS J190126+072450 19 01 26.90 +07 24 50.04 6.75 NVSS
3 NVSS J190049+073809 19 00 49.39 +07 38 09.96 9.49 NVSS
4 NVSS J190155+072507 19 01 55.70 +07 25 08.04 12.27 NVSS
5 NVSS J190139+074048 19 01 39.60 +07 40 49.08 12.72 NVSS
6 571-139 19 01 55.03 +07 41 22.20 15.59 NLTT

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