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 J1531.6+0406

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1531.6+0406 Swift-XRT detections in the field for 4FGL J1531.6+0406

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 31 36.37 +04 16 07.41 5.40 (2.5 ± 0.8) x 10-3 24 3.888 3.212

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 15 31 38.91 +04 00 59.48 5.70 (1.7 ± 0.6) x 10-3 19 2.591 2.597
2 15 31 59.09 +04 04 03.39 5.76 (1.7 ± 0.7) x 10-3 19 2.800 2.581

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1531.6+0406 Swift-XRT image with known radio, optical and UV sources for 4FGL J1531.6+0406

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J153154.9+035538 15 31 54.98 +03 55 39.00 11.70 ROSAT
2RXS J153154.9+035538 15 31 54.98 +03 55 39.00 11.70 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
QORG J153137.6+040740 15 31 37.61 +04 07 40.08 1.28 QORGCAT
1 FIRST J153137.4+040739 15 31 37.39 +04 07 40.08 1.31 FIRST
GLEAM J153129+040915 15 31 29.40 +04 09 15.84 3.88 GLEAMEGCAT
QORG J153129.5+040925 15 31 29.50 +04 09 24.84 3.95 QORGCAT
TGSSADR J153129.3+040926 15 31 29.40 +04 09 25.92 3.99 GMRTAS150M
2 NVSS J153129+040925 15 31 29.30 +04 09 25.92 3.99 NVSS
FIRST J153129.3+040926 15 31 29.30 +04 09 25.92 4.00 FIRST
QORG J153146.0+041133 15 31 46.01 +04 11 33.00 4.82 QORGCAT
3 NVSS J153145+041142 15 31 45.91 +04 11 42.00 4.96 NVSS
4 BD+04 3023 15 31 59.95 +04 03 57.60 5.42 ACRS
PPM 161665 15 31 59.95 +04 03 57.60 5.42 PPM
HD 138442 15 31 59.95 +04 03 57.24 5.42 HIC
SAO 121048 15 31 59.95 +04 03 57.24 5.42 SAO
HIP 76058 15 32 00.00 +04 03 57.96 5.43 HIPPARCOS
GLEAM J153142+040042 15 31 42.50 +04 00 42.84 6.15 GLEAMEGCAT
TGSSADR J153142.4+040029 15 31 42.50 +04 00 29.88 6.37 GMRTAS150M
FIRST J153142.5+040027 15 31 42.50 +04 00 27.00 6.41 FIRST
5 NVSS J153142+040025 15 31 42.41 +04 00 24.84 6.44 NVSS
6 PGC 1265497 15 31 48.00 +04 14 30.12 7.81 PGC2003
7 FIRST J153106.0+040717 15 31 06.00 +04 07 18.12 8.88 FIRST
SDSS J15316+0416 15 31 36.60 +04 16 00.12 9.23 VERONCAT
QORG J153136.7+041603 15 31 36.70 +04 16 03.00 9.27 QORGCAT
TGSSADR J153136.5+041602 15 31 36.50 +04 16 03.00 9.27 GMRTAS150M
FIRST J153136.5+041603 15 31 36.50 +04 16 04.08 9.29 FIRST
8 NVSS J153136+041603 15 31 36.50 +04 16 04.08 9.30 NVSS
9 FIRST J153217.1+041108 15 32 17.21 +04 11 08.88 9.85 FIRST
QORG J153217.2+041109 15 32 17.21 +04 11 08.88 9.86 QORGCAT
10 NVSS J153100+040922 15 31 00.41 +04 09 23.04 10.58 NVSS
FIRST J153100.2+040921 15 31 00.31 +04 09 20.88 10.60 FIRST
TGSSADR J153100.2+040920 15 31 00.19 +04 09 20.88 10.60 GMRTAS150M
11 NVSS J153219+041200 15 32 19.70 +04 12 00.00 10.80 NVSS
QORG J153220.9+041205 15 32 20.90 +04 12 05.04 11.11 QORGCAT
FIRST J153220.9+041205 15 32 20.90 +04 12 06.12 11.12 FIRST
FIRST J153101.5+040043 15 31 01.61 +04 00 42.84 11.71 FIRST
12 NVSS J153101+040023 15 31 01.70 +04 00 23.04 11.87 NVSS
13 NVSS J153214+035655 15 32 14.50 +03 56 56.04 12.89 NVSS
QORG J153218.4+041555 15 32 18.41 +04 15 55.08 12.90 QORGCAT
FIRST J153214.5+035653 15 32 14.50 +03 56 53.16 12.91 FIRST
14 FIRST J153218.4+041555 15 32 18.50 +04 15 56.16 12.92 FIRST
15 NVSS J153210+041801 15 32 10.30 +04 18 01.08 13.26 NVSS
FIRST J153210.3+041801 15 32 10.30 +04 18 02.16 13.27 FIRST
TGSSADR J153210.3+041802 15 32 10.39 +04 18 02.16 13.29 GMRTAS150M
FIRST J153214.7+041716 15 32 14.71 +04 17 17.16 13.30 FIRST
GLEAM J153211+041755 15 32 11.40 +04 17 56.04 13.34 GLEAMEGCAT
16 SDSS J15324+0414 15 32 25.20 +04 14 39.84 13.39 VERONCAT
17 NVSS J153214+041726 15 32 14.90 +04 17 26.16 13.45 NVSS
FIRST J153215.1+041731 15 32 15.19 +04 17 31.92 13.56 FIRST
18 WDS J15323+0417 15 32 18.00 +04 16 59.88 13.61 WDS
19 PGC 1266036 15 31 00.19 +04 16 50.16 14.35 PGC2003

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