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 J2250.3+1747

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J2250.3+1747 Swift-XRT detections in the field for 3FGL J2250.3+1747

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 22 49 56.08 +17 44 41.64 4.17 (2.2 ± 0.2) x 10-2 106 9.856 9.474
2 22 50 32.71 +17 49 18.40 5.53 (5.2 ± 1.2) x 10-3 27 4.104 4.327

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 22 49 56.08 +17 44 41.64 4.17 (4 ± 7) x 10-4 104 2.845 0.478

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2250.3+1747 Swift-XRT image with known radio, optical and UV sources for 3FGL J2250.3+1747

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J224955.2+174455 22 49 55.20 +17 44 54.96 6.41 ROSAT
2RXS J224955.0+174438 22 49 55.80 +17 44 38.76 6.56 ROSAT
2RXS J224955.0+174438 22 49 55.80 +17 44 38.76 6.56 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
2248+1733 22 50 31.70 +17 49 32.16 3.44 NORTH6CM
TGSSADR J225032.7+174915 22 50 32.81 +17 49 15.96 3.53 GMRTAS150M
1 NVSS J225032+174915 22 50 32.81 +17 49 14.88 3.53 NVSS
GB6 J2250+1749 22 50 33.89 +17 49 19.92 3.80 GB6
TGSSADR J225013.4+175315 22 50 13.51 +17 53 15.00 5.68 GMRTAS150M
2 NVSS J225013+175316 22 50 13.30 +17 53 16.08 5.71 NVSS
3 NVSS J225041+175027 22 50 41.40 +17 50 26.88 5.90 NVSS
4 NVSS J225027+174207 22 50 27.19 +17 42 06.84 5.93 NVSS
5 NVSS J225059+174815 22 50 59.59 +17 48 15.12 9.60 NVSS
6 MITG J2250+1750 22 50 58.99 +17 50 57.84 9.97 MITGB6CM
GB6 J2251+1750 22 51 00.00 +17 50 12.12 9.98 GB6
VLSSr J225100.3+175003 22 51 00.31 +17 50 03.12 10.01 VLSSR
2248+1734 22 51 00.91 +17 50 13.92 10.18 NORTH6CM
2248+1734 22 51 00.91 +17 50 13.92 10.18 NORTH20CM
TGSSADR J225101.0+175020 22 51 01.10 +17 50 20.04 10.26 GMRTAS150M
7 NVSS J225101+175019 22 51 01.10 +17 50 20.04 10.26 NVSS
TXS 2248+175 22 51 01.30 +17 50 17.16 10.29 TEXAS
8 NVSS J225014+173551 22 50 14.21 +17 35 51.00 11.96 NVSS
9 NVSS J224953+173701 22 49 53.11 +17 37 00.84 12.43 NVSS

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