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 J1809.0+3517

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1809.0+3517 Swift-XRT detections in the field for 3FGL J1809.0+3517

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 09 10.67 +35 28 25.89 5.49 (1.0 ± 0.2) x 10-2 30 5.199 5.208
2 18 09 14.85 +35 09 02.58 5.20 (10 ± 2) x 10-3 33 5.313 5.103

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1809.0+3517 Swift-XRT image with known radio, optical and UV sources for 3FGL J1809.0+3517

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J180910.7+352820 18 09 10.78 +35 28 20.64 11.28 ROSAT
2RXS J180910.7+352820 18 09 10.78 +35 28 20.64 11.28 ROSAT
2 1RXS J180942.8+350603 18 09 42.79 +35 06 02.88 13.44 ROSAT
2RXS J180942.8+350603 18 09 42.89 +35 06 03.24 13.44 ROSAT
2RXS J180942.8+350603 18 09 42.89 +35 06 03.24 13.44 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
GB6 J1808+3520 18 08 50.81 +35 20 36.96 4.61 GB6
WN 1807.0+3519 18 08 50.30 +35 20 33.00 4.63 WENSS
1 NVSS J180849+352041 18 08 49.90 +35 20 40.92 4.79 NVSS
2 NVSS J180831+351706 18 08 31.80 +35 17 07.08 6.88 NVSS
3 NVSS J180913+352433 18 09 13.20 +35 24 33.12 7.60 NVSS
4 NVSS J180914+350901 18 09 14.81 +35 09 01.08 8.31 NVSS
5 NVSS J180901+350842 18 09 01.80 +35 08 42.00 8.44 NVSS
WN 1806.8+3509 18 08 35.69 +35 09 56.88 9.40 WENSS
6 NVSS J180835+350952 18 08 35.59 +35 09 52.92 9.46 NVSS
TGSSADR J180835.4+350951 18 08 35.50 +35 09 51.84 9.49 GMRTAS150M
7C 180648.5+350909 18 08 35.30 +35 09 42.84 9.64 UC7C151MHZ
7 NVSS J180955+351622 18 09 55.10 +35 16 23.16 10.16 NVSS
WN 1808.2+3519 18 10 01.39 +35 20 30.84 11.90 WENSS
8 NVSS J180809+352016 18 08 09.00 +35 20 16.08 11.94 NVSS
9 NVSS J181001+352028 18 10 01.80 +35 20 29.04 11.97 NVSS
10 NVSS J181004+350707 18 10 04.10 +35 07 08.04 15.60 NVSS

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