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 J1626.5+6257

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1626.5+6257 Swift-XRT detections in the field for 4FGL J1626.5+6257

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 26 46.01 +63 00 48.67 3.91 (5.9 ± 0.5) x 10-2 196 13.010 13.070

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 27 56.80 +62 50 12.87 7.71 (2.9 ± 1.0) x 10-3 10 2.782 2.898
2 16 25 43.75 +62 51 46.61 6.41 (3.0 ± 1.1) x 10-3 13 2.975 2.821
3 16 26 45.87 +63 00 47.62 3.90 (2 ± 13) x 10-4 199 3.029 0.161

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1626.5+6257 Swift-XRT image with known radio, optical and UV sources for 4FGL J1626.5+6257

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
2RXS J162644.9+630046 16 26 44.98 +63 00 46.44 3.48 ROSAT
2RXS J162644.9+630046 16 26 44.98 +63 00 46.44 3.48 ROSAT
1RXS J162645.0+630047 16 26 45.00 +63 00 47.16 3.48 ROSAT
1RXS J162645.0+630047 16 26 45.00 +63 00 47.16 3.48 ROSAT
1RXS J162645.0+630047 16 26 45.00 +63 00 47.16 3.48 ROSAT
1 XMMSL2 J162646.3+630046 16 26 45.70 +63 00 46.44 3.50 XMM-NEWTON
XMMSL2 J162646.3+630046 16 26 45.79 +63 00 46.44 3.51 XMM-NEWTON
XMMSL2 J162646.3+630046 16 26 46.25 +63 00 45.72 3.51 XMM-NEWTON
XMMSL2 J162646.3+630046 16 26 46.25 +63 00 45.72 3.51 XMM-NEWTON
XMMSL2 J162646.3+630046 16 26 46.06 +63 00 49.32 3.56 XMM-NEWTON
1RXS J162645.0+630047 16 26 45.98 +63 00 51.48 3.59 ROSAT
XMMSL2 J162646.3+630046 16 26 45.65 +63 01 15.24 3.95 XMM-NEWTON
2 2RXP J162721.2+630253 16 27 21.12 +63 02 53.88 7.55 ROSAT
3 1WGA J1627.8+6249 16 27 52.39 +62 49 59.88 11.63 ROSAT
4 1RXS J162757.9+625001 16 27 57.91 +62 50 00.96 12.10 ROSAT
2RXS J162757.9+625000 16 27 57.96 +62 50 00.60 12.11 ROSAT
2RXS J162757.9+625000 16 27 57.96 +62 50 00.60 12.11 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [ZEH2003] RX J1626.7+6300 1 16 26 50.81 +63 00 02.16 3.13 HRASSOPTID
WN 1626.2+6307 16 26 45.60 +63 00 42.84 3.45 WENSS
[ZEH2003] RX J1626.7+6300 2 16 26 46.10 +63 00 46.08 3.51 HRASSOPTID
QORG J162646.0+630048 16 26 46.01 +63 00 47.88 3.54 QORGCAT
FIRST J162646.1+630048 16 26 46.10 +63 00 47.88 3.55 FIRST
2 NVSS J162645+630051 16 26 46.01 +63 00 51.84 3.59 NVSS
3 FIRST J162606.9+625517 16 26 07.01 +62 55 18.12 3.83 FIRST
QORG J162643.2+625309 16 26 43.20 +62 53 08.88 4.47 QORGCAT
4 FIRST J162643.2+625307 16 26 43.20 +62 53 08.16 4.49 FIRST
WN 1625.9+6310 16 26 29.09 +63 03 34.92 6.10 WENSS
FIRST J162628.9+630335 16 26 28.99 +63 03 36.00 6.12 FIRST
5 NVSS J162628+630336 16 26 28.99 +63 03 36.00 6.12 NVSS
TGSSADR J162628.7+630336 16 26 28.70 +63 03 37.08 6.14 GMRTAS150M
7C 162556.4+631018 16 26 29.30 +63 03 38.88 6.18 UC7C151MHZ
6 NVSS J162701+625007 16 27 01.30 +62 50 07.08 8.00 NVSS
FIRST J162702.8+625005 16 27 02.90 +62 50 06.00 8.09 FIRST
FIRST J162700.0+624957 16 27 00.10 +62 49 57.00 8.10 FIRST
7 SAO 17085 16 25 18.38 +62 55 45.12 8.83 SAO
PPM 19877 16 25 18.34 +62 55 44.76 8.84 PPM
BD+63 1271 16 25 18.29 +62 55 45.12 8.85 ACRS
QORG J162528.8+630245 16 25 28.80 +63 02 44.88 9.11 QORGCAT
8 NVSS J162528+630247 16 25 28.10 +63 02 48.12 9.21 NVSS
9 PGC 2646969 16 27 56.81 +62 57 51.84 9.36 PGC2003
10 PGC 2644029 16 25 40.30 +62 49 10.92 10.37 PGC2003
11 PGC 2644104 16 25 32.90 +62 49 26.04 10.70 PGC2003
12 FIRST J162510.8+630251 16 25 10.80 +63 02 51.00 10.90 FIRST
QORG J162616.6+624628 16 26 16.61 +62 46 27.84 11.23 QORGCAT
13 FIRST J162616.7+624626 16 26 16.80 +62 46 26.04 11.26 FIRST
14 NVSS J162708+624625 16 27 08.11 +62 46 26.04 11.73 NVSS
FIRST J162708.6+624623 16 27 08.69 +62 46 23.88 11.78 FIRST
FIRST J162547.1+624643 16 25 47.11 +62 46 44.04 12.06 FIRST
15 NVSS J162545+624643 16 25 45.79 +62 46 42.96 12.13 NVSS
16 FIRST J162502.9+625111 16 25 03.00 +62 51 11.88 12.19 FIRST
FIRST J162543.1+624640 16 25 43.20 +62 46 41.16 12.31 FIRST
17 FIRST J162735.2+630809 16 27 35.30 +63 08 08.88 12.68 FIRST
PGC 2643539 16 27 51.79 +62 47 44.88 13.15 PGC2003
QORG J162751.8+624743 16 27 51.79 +62 47 43.08 13.17 QORGCAT
18 FIRST J162751.9+624742 16 27 51.89 +62 47 43.08 13.19 FIRST

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