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 J1619.1+7538

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1619.1+7538 Swift-XRT detections in the field for 3FGL J1619.1+7538

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 17 29.52 +75 45 27.89 5.17 (6 ± 2) x 10-3 30 4.410 3.940
2 16 19 14.12 +75 37 52.97 6.52 (4.3 ± 1.3) x 10-3 17 3.190 3.309
3 16 20 59.37 +75 37 49.91 6.78 (3.6 ± 1.2) x 10-3 14 2.805 3.092

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 16 19 42.48 +75 27 23.45 7.09 (3.2 ± 1.1) x 10-3 10 2.533 2.873
2 16 21 48.56 +75 31 10.23 6.31 (3.9 ± 1.4) x 10-3 13 3.036 2.820
3 16 18 48.85 +75 35 00.56 6.93 (3.2 ± 1.1) x 10-3 13 2.772 2.799
4 16 20 39.90 +75 41 16.28 7.71 (2.5 ± 1.0) x 10-3 9 2.478 2.557
5 16 19 01.47 +75 33 04.90 7.48 (2.5 ± 1.0) x 10-3 11 2.583 2.455

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1619.1+7538 Swift-XRT image with known radio, optical and UV sources for 3FGL J1619.1+7538

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J161905.0+753417 16 19 05.40 +75 34 17.76 4.21 ROSAT
2RXS J161905.0+753417 16 19 05.40 +75 34 17.76 4.21 ROSAT
2 1WGA J1618.4+7543 16 18 29.21 +75 43 30.00 5.66 ROSAT
3 HD 148048 16 17 45.50 +75 44 53.88 8.34 ROSAT
1RXS J161745.5+754454 16 17 45.50 +75 44 54.60 8.34 ROSAT
2RXS J161734.4+754509 16 17 34.42 +75 45 10.08 8.99 ROSAT
2RXS J161734.4+754509 16 17 34.42 +75 45 10.08 8.99 ROSAT
4 XMMSL2 J161731.2+754517 16 17 31.15 +75 45 16.56 9.20 XMM-NEWTON
XMMSL2 J161731.2+754517 16 17 31.15 +75 45 16.56 9.20 XMM-NEWTON
2RXP J161729.6+754510 16 17 29.50 +75 45 10.80 9.20 ROSAT
{ETA} UMI 16 17 30.31 +75 45 19.08 9.27 ROSAT
1WGA J1617.4+7545 16 17 27.31 +75 45 31.68 9.55 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J161913+753753 16 19 13.80 +75 37 54.12 0.60 NVSS
WN 1620.6+7544 16 19 13.90 +75 37 51.96 0.63 WENSS
TGSSADR J161913.7+753751 16 19 13.70 +75 37 51.96 0.63 GMRTAS150M
7C 162037.3+754450 16 19 13.80 +75 37 45.84 0.72 UC7C151MHZ
2 1620+7542L 16 19 28.01 +75 35 39.12 3.01 NORTH20CM
3 NVSS J162001+753331 16 20 01.49 +75 33 30.96 5.85 NVSS
4 NVSS J161829+753254 16 18 29.71 +75 32 54.96 6.15 NVSS
5 NVSS J162111+753555 16 21 11.81 +75 35 54.96 7.89 NVSS
TGSSADR J162115.5+754031 16 21 15.60 +75 40 31.08 7.94 GMRTAS150M
WN 1622.6+7547 16 21 15.91 +75 40 30.00 7.95 WENSS
WN 1622.6+7542 16 21 13.70 +75 36 02.16 7.96 WENSS
6 NVSS J162116+754032 16 21 16.10 +75 40 32.88 7.97 NVSS
7 NVSS J161952+752915 16 19 52.30 +75 29 16.08 9.56 NVSS
WN 1621.2+7536 16 19 52.51 +75 29 15.00 9.57 WENSS
TGSSADR J161952.4+752914 16 19 52.39 +75 29 13.92 9.59 GMRTAS150M
7C 162115.3+753604 16 19 54.00 +75 29 03.12 9.80 UC7C151MHZ
8 NVSS J161646+753222 16 16 46.49 +75 32 22.92 10.90 NVSS
9 NVSS J161940+752732 16 19 40.99 +75 27 33.12 11.09 NVSS
10 NVSS J161639+754458 16 16 39.41 +75 44 58.92 11.43 NVSS
WN 1618.0+7552 16 16 38.81 +75 45 06.84 11.54 WENSS
WN 1623.3+7539 16 22 00.10 +75 33 06.12 11.78 WENSS
11 NVSS J162201+753309 16 22 01.30 +75 33 09.00 11.82 NVSS
12 NVSS J162147+753118 16 21 47.59 +75 31 18.12 12.07 NVSS
13 NVSS J161644+754649 16 16 44.11 +75 46 50.16 12.35 NVSS

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