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 J2116.2+3701

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2116.2+3701 Swift-XRT detections in the field for 4FGL J2116.2+3701

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 21 15 45.81 +37 12 14.96 4.67 (5.8 ± 1.1) x 10-3 42 5.811 5.473
2 21 16 46.74 +36 58 28.52 5.24 (2.4 ± 0.8) x 10-3 21 3.593 3.096

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 21 16 32.51 +37 03 37.96 5.82 (1.8 ± 0.7) x 10-3 18 2.766 2.718
2 21 16 45.02 +37 01 35.45 5.70 (1.3 ± 0.6) x 10-3 14 2.499 2.288
3 21 16 23.16 +36 54 31.72 6.12 (1.1 ± 0.5) x 10-3 16 2.393 2.251
4 21 15 45.81 +37 12 14.96 4.67 (1.4 ± 0.7) x 10-3 42 2.717 2.137
5 21 15 53.30 +37 12 52.02 5.76 (8 ± 5) x 10-4 12 2.533 1.739

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2116.2+3701 Swift-XRT image with known radio, optical and UV sources for 4FGL J2116.2+3701

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J211707.0+365621 21 17 07.03 +36 56 21.48 11.75 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J211545+365841 21 15 45.91 +36 58 41.16 6.34 NVSS
2114+3643 21 16 35.59 +36 56 34.08 6.55 NORTH6CM
VLSSr J211635.6+365633 21 16 35.59 +36 56 34.08 6.56 VLSSR
GB6 J2116+3656 21 16 34.01 +36 56 12.12 6.64 GB6
WN 2114.5+3643 21 16 35.59 +36 56 26.88 6.64 WENSS
TXS 2114+367 21 16 35.69 +36 56 26.88 6.66 TEXAS
2 NVSS J211635+365626 21 16 35.69 +36 56 26.16 6.66 NVSS
TGSSADR J211635.6+365624 21 16 35.59 +36 56 25.08 6.68 GMRTAS150M
3 WDS J21168+3659 21 16 48.00 +36 58 59.88 7.20 WDS
4 NVSS J211651+370007 21 16 51.50 +37 00 07.92 7.56 NVSS
TGSSADR J211658.6+370346 21 16 58.70 +37 03 47.16 9.14 GMRTAS150M
5 NVSS J211658+370347 21 16 58.70 +37 03 47.16 9.15 NVSS
WN 2114.9+3651 21 16 58.80 +37 03 43.92 9.16 WENSS
6 SAO 71149 21 16 35.83 +36 51 17.64 11.12 SAO
PPM 86313 21 16 35.81 +36 51 16.56 11.13 PPM
BD+36 4496 21 16 35.78 +36 51 15.48 11.15 ACRS
7 NVSS J211637+365044 21 16 37.20 +36 50 44.16 11.75 NVSS
8 NVSS J211519+370725 21 15 19.30 +37 07 24.96 12.44 NVSS
WN 2113.3+3654 21 15 18.70 +37 07 15.96 12.47 WENSS
9 NVSS J211642+371313 21 16 42.91 +37 13 14.16 13.01 NVSS
10 PPM 86285 21 15 33.12 +37 12 01.44 13.31 PPM
BD+36 4491 21 15 33.14 +37 12 01.80 13.31 ACRS
11 NVSS J211711+371140 21 17 11.81 +37 11 40.92 15.32 NVSS
TGSSADR J211711.9+371142 21 17 11.90 +37 11 43.08 15.35 GMRTAS150M
WN 2115.1+3659 21 17 11.59 +37 11 49.92 15.38 WENSS

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