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 J0540.2+0655

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0540.2+0655 Swift-XRT detections in the field for 4FGL J0540.2+0655


No detected excesses found.

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 05 40 30.15 +07 01 38.19 7.48 (2.8 ± 1.1) x 10-3 9 2.575 2.537
2 05 40 16.87 +07 01 29.07 6.93 (2.2 ± 1.1) x 10-3 7 2.188 2.090

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0540.2+0655 Swift-XRT image with known radio, optical and UV sources for 4FGL J0540.2+0655

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J054002.4+070627 05 40 02.40 +07 06 27.36 11.76 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J054015+065425 05 40 15.50 +06 54 24.84 0.82 NVSS
2 NVSS J054031+065350 05 40 31.20 +06 53 49.92 4.63 NVSS
3 PPM 149305 05 40 29.40 +06 57 45.00 4.88 PPM
BD+06 992 05 40 29.42 +06 57 44.64 4.88 ACRS
SAO 113024 05 40 29.42 +06 57 44.64 4.88 SAO
0537+0656 05 39 48.79 +06 57 43.92 6.63 NORTH6CM
0537+0656 05 39 48.79 +06 57 43.92 6.63 NORTH20CM
GB6 J0539+0657 05 39 48.19 +06 57 37.08 6.72 GB6
4 NVSS J053948+065739 05 39 48.10 +06 57 38.88 6.77 NVSS
TXS 0537+069 05 39 48.00 +06 57 38.88 6.77 TEXAS
TGSSADR J053948.0+065739 05 39 48.00 +06 57 38.88 6.78 GMRTAS150M
GLEAM J053947+065736 05 39 47.90 +06 57 36.00 6.79 GLEAMEGCAT
VLSSr J053948.0+065745 05 39 48.00 +06 57 45.00 6.82 VLSSR
5 SAO 113027 05 40 41.98 +06 55 56.64 7.22 SAO
PPM 149307 05 40 42.05 +06 55 59.16 7.24 PPM
HD 246287 05 40 42.07 +06 55 58.44 7.24 HIC
BD+06 994 05 40 42.07 +06 55 58.44 7.24 ACRS
HIP 26719 05 40 42.10 +06 55 59.16 7.25 HIPPARCOS
6 WDS J05406+0650 05 40 36.00 +06 49 59.88 7.56 WDS
7 NVSS J054024+070243 05 40 24.60 +07 02 43.08 8.23 NVSS
TGSSADR J054024.5+070243 05 40 24.60 +07 02 44.16 8.24 GMRTAS150M
GLEAM J054024+070245 05 40 24.31 +07 02 45.96 8.24 GLEAMEGCAT
8 NVSS J054018+064638 05 40 18.60 +06 46 39.00 8.46 NVSS
9 NVSS J054028+064644 05 40 28.70 +06 46 44.04 9.12 NVSS
SAO 113023 05 40 26.95 +06 46 31.08 9.15 SAO
PPM 149304 05 40 27.02 +06 46 30.72 9.16 PPM
BD+06 991 05 40 27.07 +06 46 30.72 9.16 ACRS
10 SAO 113008 05 39 36.14 +06 52 57.36 9.41 SAO
HIP 26631 05 39 36.12 +06 52 57.00 9.42 HIPPARCOS
BD+06 986 05 39 36.12 +06 52 56.64 9.42 ACRS
PPM 149286 05 39 36.10 +06 52 56.64 9.42 PPM
HD 37543 05 39 36.10 +06 52 56.28 9.42 HIC
11 PGCC G198.20-12.47 05 39 45.70 +07 02 08.16 9.87 PLANCKGCC
TGSSADR J053928.9+065137 05 39 28.90 +06 51 38.16 11.48 GMRTAS150M
12 NVSS J053928+065137 05 39 28.90 +06 51 38.16 11.49 NVSS
GLEAM J053928+065141 05 39 28.70 +06 51 41.04 11.53 GLEAMEGCAT
13 NVSS J053927+064445 05 39 27.91 +06 44 44.88 15.20 NVSS

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