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 J2016.3+4953

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2016.3+4953 Swift-XRT detections in the field for 4FGL J2016.3+4953


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 20 16 19.12 +49 53 24.85 8.62 (7 ± 3) x 10-3 8 2.623 2.648
2 20 16 04.87 +49 38 05.14 7.09 (6 ± 3) x 10-3 7 2.381 2.364
3 20 15 56.01 +49 38 22.33 7.09 (4 ± 2) x 10-3 6 2.227 1.862

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2016.3+4953 Swift-XRT image with known radio, optical and UV sources for 4FGL J2016.3+4953

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J201619.3+495326 20 16 19.37 +49 53 26.52 0.25 ROSAT
1RXS J201619.3+495323 20 16 19.30 +49 53 22.92 0.30 ROSAT
1RXS J201619.3+495323 20 16 19.30 +49 53 22.92 0.30 ROSAT
2 2RXS J201702.1+494344 20 17 02.11 +49 43 44.04 11.91 ROSAT
1RXS J201702.1+494342 20 17 02.11 +49 43 42.60 11.93 ROSAT
3 2RXS J201512.3+500508 20 15 12.31 +50 05 08.16 15.94 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
QORG J201619.6+495325 20 16 19.61 +49 53 25.08 0.24 QORGCAT
1 NVSS J201619+495324 20 16 19.70 +49 53 24.00 0.24 NVSS
2 PPM 59615 20 16 14.76 +49 54 46.08 1.51 PPM
BD+49 3239 20 16 14.71 +49 54 46.08 1.52 ACRS
3 V1825 Cyg 20 16 06.22 +49 55 08.04 2.79 GCVS
4 PPM 59604 20 15 56.81 +49 46 53.40 7.72 PPM
BD+49 3238 20 15 56.76 +49 46 53.04 7.73 ACRS
5 NVSS J201528+495149 20 15 28.80 +49 51 48.96 8.53 NVSS
6 MITG J2015+4956 20 15 29.90 +49 56 58.92 8.85 MITGB6CM
GB6 J2015+4957 20 15 31.49 +49 57 47.88 8.96 GB6
WN 2014.0+4948 20 15 30.50 +49 58 05.16 9.24 WENSS
TGSSADR J201530.4+495805 20 15 30.41 +49 58 05.16 9.25 GMRTAS150M
7 NVSS J201530+495804 20 15 30.41 +49 58 05.16 9.26 NVSS
TXS 2014+498 20 15 30.10 +49 58 05.16 9.29 TEXAS
VLSSr J201529.8+495802 20 15 29.81 +49 58 03.00 9.32 VLSSR
8 2014+4948 20 15 28.39 +49 57 37.08 9.32 NORTH6CM
2014+4948 20 15 28.39 +49 57 37.08 9.32 NORTH20CM
9 NVSS J201531+495956 20 15 31.49 +49 59 57.12 10.14 NVSS
10 NVSS J201642+500359 20 16 42.31 +50 03 59.04 10.97 NVSS
11 NVSS J201658+494333 20 16 58.01 +49 43 33.96 11.70 NVSS
12 PPM 59625 20 16 47.33 +49 41 54.60 12.45 PPM
BD+49 3243 20 16 47.33 +49 41 54.60 12.45 ACRS

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