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 J0540.0+1208

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0540.0+1208 Swift-XRT detections in the field for 3FGL J0540.0+1208

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 39 27.31 +12 07 20.77 5.31 (9 ± 2) x 10-3 30 5.257 4.905

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 27.10 +12 03 29.65 8.27 (2.2 ± 0.9) x 10-3 7 2.346 2.384
2 05 40 22.16 +12 04 11.98 7.71 (2.2 ± 0.9) x 10-3 11 2.346 2.372

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0540.0+1208 Swift-XRT image with known radio, optical and UV sources for 3FGL J0540.0+1208

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J053930.6+120650 05 39 30.60 +12 06 50.04 7.60 ROSAT
2 2RXS J054023.5+120300 05 40 23.52 +12 03 00.36 8.14 ROSAT
3 1WGA J0539.4+1208 05 39 25.01 +12 08 15.00 8.71 ROSAT
4 1RXS J054016.4+121745 05 40 16.39 +12 17 44.88 9.67 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
TGSSADR J054004.9+120953 05 40 04.90 +12 09 54.00 1.47 GMRTAS150M
1 NVSS J054005+120955 05 40 05.11 +12 09 55.08 1.51 NVSS
2 NVSS J053952+121438 05 39 52.20 +12 14 38.04 6.09 NVSS
TGSSADR J053952.2+121445 05 39 52.20 +12 14 45.96 6.22 GMRTAS150M
3 NVSS J053943+121508 05 39 43.30 +12 15 07.92 7.53 NVSS
TGSSADR J053943.1+121510 05 39 43.10 +12 15 11.16 7.59 GMRTAS150M
4 NVSS J053929+120539 05 39 29.81 +12 05 39.84 8.18 NVSS
TGSSADR J053929.2+120532 05 39 29.30 +12 05 31.92 8.34 GMRTAS150M
5 NVSS J053934+120211 05 39 34.51 +12 02 12.12 9.23 NVSS
6 NVSS J053923+120558 05 39 23.30 +12 05 57.84 9.55 NVSS
7 NVSS J053921+121608 05 39 21.41 +12 16 08.04 12.00 NVSS
8 NVSS J053933+115842 05 39 33.00 +11 58 42.96 12.20 NVSS
9 NVSS J054030+121942 05 40 30.31 +12 19 41.88 13.03 NVSS
10 TGSSADR J053925.5+115856 05 39 25.61 +11 58 57.00 13.11 GMRTAS150M
11 NVSS J053914+121554 05 39 14.71 +12 15 54.00 13.20 NVSS
TGSSADR J053914.7+121554 05 39 14.71 +12 15 54.00 13.21 GMRTAS150M
12 NVSS J053923+115911 05 39 23.71 +11 59 12.12 13.22 NVSS
13 NVSS J053916+115937 05 39 16.90 +11 59 38.04 14.13 NVSS
14 NVSS J053916+121917 05 39 16.20 +12 19 18.12 15.01 NVSS

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