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 J0540.7+3611

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0540.7+3611 Swift-XRT detections in the field for 4FGL J0540.7+3611

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 40 46.85 +36 16 57.31 5.02 (1.2 ± 0.2) x 10-2 42 5.800 5.757

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0540.7+3611 Swift-XRT image with known radio, optical and UV sources for 4FGL J0540.7+3611


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J054051+361113 05 40 51.70 +36 11 13.92 1.70 NVSS
2 NVSS J054100+360807 05 41 00.70 +36 08 08.16 5.11 NVSS
3 NVSS J054056+360709 05 40 56.50 +36 07 09.84 5.43 NVSS
4 CGPS J054017+361446 05 40 17.81 +36 14 47.04 6.00 CGPSNGPCAT
WN 0537.4+3616 05 40 52.30 +36 18 02.88 6.29 WENSS
5 NVSS J054020+360751 05 40 20.30 +36 07 50.88 6.33 NVSS
6 NVSS J054052+361804 05 40 52.51 +36 18 05.04 6.33 NVSS
TGSSADR J054052.5+361805 05 40 52.51 +36 18 06.12 6.35 GMRTAS150M
CGPS J054052+361807 05 40 52.61 +36 18 06.84 6.37 CGPSNGPCAT
7 PGCC G173.33+3.05 05 41 21.00 +36 12 38.88 7.47 PLANCKGCC
8 CGPS J054122+360841 05 41 22.99 +36 08 40.92 8.51 CGPSNGPCAT
9 WDS J05407+3621 05 40 42.00 +36 21 00.00 9.03 WDS
10 MITG J0541+3607 05 41 27.41 +36 07 33.96 9.79 MITGB6CM
11 NVSS J054044+360154 05 40 44.71 +36 01 54.84 10.07 NVSS
12 CTB 19 05 40 28.10 +36 01 32.88 10.93 DIXON
13 NVSS J054047+360100 05 40 47.90 +36 01 00.12 11.01 NVSS
14 NVSS J054036+360004 05 40 36.00 +36 00 05.04 12.02 NVSS
WN 0537.6+3558 05 41 01.90 +36 00 09.00 12.37 WENSS
15 NVSS J054102+360008 05 41 02.21 +36 00 07.92 12.39 NVSS
TGSSADR J054102.1+360006 05 41 02.21 +36 00 06.12 12.43 GMRTAS150M
CGPS J054102+360005 05 41 02.30 +36 00 05.04 12.45 CGPSNGPCAT
16 DA185 05 41 22.10 +36 01 28.92 13.01 DIXON
17 WDS J05401+3601 05 40 06.00 +36 01 00.12 13.41 WDS
18 SAO 58306 05 40 04.30 +36 00 32.40 13.99 SAO
PPM 70688 05 40 04.18 +36 00 32.04 14.00 PPM
BD+35 1197 05 40 04.20 +36 00 32.04 14.00 ACRS

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