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 J1906.1+1651

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1906.1+1651 Swift-XRT detections in the field for 4FGL J1906.1+1651

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 05 48.59 +16 52 31.23 4.67 (1.4 ± 0.2) x 10-2 60 7.462 7.298
2 19 06 27.31 +17 02 55.87 5.49 (6.2 ± 1.3) x 10-3 27 4.904 4.870
3 19 05 21.94 +16 54 51.57 5.64 (5.4 ± 1.3) x 10-3 22 4.236 4.007
4 19 06 24.46 +17 00 16.14 6.78 (3.6 ± 1.1) x 10-3 14 3.253 3.292

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 06 39.91 +16 54 58.19 6.93 (2.0 ± 0.9) x 10-3 10 2.285 2.244

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1906.1+1651 Swift-XRT image with known radio, optical and UV sources for 4FGL J1906.1+1651

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J190549.1+165201 19 05 49.08 +16 52 01.56 4.95 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
TGSSADR J190552.4+165138 19 05 52.51 +16 51 38.16 4.15 GMRTAS150M
VLSSr J190552.0+165131 19 05 52.01 +16 51 32.04 4.26 VLSSR
1 NVSS J190552+165121 19 05 52.01 +16 51 20.88 4.28 NVSS
TGSSADR J190551.7+165108 19 05 51.79 +16 51 07.92 4.38 GMRTAS150M
2 SAO 104483 19 06 27.74 +16 53 53.16 4.74 SAO
PPM 135796 19 06 27.74 +16 53 53.16 4.74 PPM
BD+16 3731 19 06 27.72 +16 53 53.88 4.74 ACRS
3 EUVE J1906+169 19 06 07.99 +16 56 42.00 4.83 EUVECAT2
4 PGC 2814554 19 06 17.50 +16 56 53.16 5.33 PGC2003
5 PGC 2814577 19 06 34.01 +16 56 60.00 7.72 PGC2003
6 WDS J19067+1654 19 06 42.00 +16 53 60.00 7.99 WDS
7 PGC 2814573 19 06 32.90 +16 45 03.96 8.78 PGC2003
8 WDS J19057+1659 19 05 42.00 +16 58 59.88 9.74 WDS
9 BD+16 3724 19 05 31.30 +16 55 53.40 10.04 ACRS
PPM 135777 19 05 31.27 +16 55 53.04 10.04 PPM
SAO 104464 19 05 31.22 +16 55 52.32 10.05 SAO
10 NVSS J190526+165328 19 05 26.71 +16 53 27.96 10.44 NVSS
11 PGC 2814535 19 06 01.39 +16 41 35.16 10.50 PGC2003
12 WDS J19069+1652 19 06 54.00 +16 52 00.12 10.58 WDS
13 NVSS J190629+170128 19 06 30.00 +17 01 27.84 10.73 NVSS
14 NVSS J190658+165111 19 06 58.30 +16 51 11.88 11.63 NVSS
TGSSADR J190658.3+165111 19 06 58.30 +16 51 11.88 11.64 GMRTAS150M
TGSSADR J190653.5+165700 19 06 53.50 +16 57 01.08 11.65 GMRTAS150M
15 NVSS J190653+165702 19 06 53.71 +16 57 02.88 11.70 NVSS
16 PGC 2814592 19 06 48.91 +16 44 35.88 11.86 PGC2003
17 NVSS J190521+165448 19 05 21.70 +16 54 48.96 11.88 NVSS
GB6 J1905+1654 19 05 21.50 +16 54 52.92 11.93 GB6
18 NVSS J190627+170307 19 06 27.91 +17 03 06.84 12.04 NVSS
1903+1650 19 05 21.00 +16 54 55.08 12.06 NORTH20CM
1903+1650 19 05 21.00 +16 54 55.08 12.06 NORTH6CM
19 NVSS J190540+164140 19 05 40.80 +16 41 39.84 12.35 NVSS
20 WDS J19056+1702 19 05 36.00 +17 01 59.88 12.94 WDS
1904+1636 19 06 47.50 +16 41 12.12 13.99 NORTH6CM
VLSSr J190647.5+164106 19 06 47.59 +16 41 06.00 14.07 VLSSR
PGC 1514601 19 06 47.90 +16 41 09.96 14.08 PGC2003
21 NVSS J190647+164104 19 06 47.71 +16 41 03.84 14.11 NVSS
TGSSADR J190647.6+164103 19 06 47.59 +16 41 03.84 14.12 GMRTAS150M
TXS 1904+166 19 06 47.71 +16 41 03.12 14.12 TEXAS
1904+166 19 06 46.99 +16 40 51.96 14.17 MRC
GB6 J1906+1641 19 06 47.90 +16 40 59.88 14.20 GB6

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