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 J0140.3+7054

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0140.3+7054 Swift-XRT detections in the field for 4FGL J0140.3+7054

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 01 40 49.22 +70 48 33.94 5.24 (8 ± 2) x 10-3 33 5.330 5.096
2 01 40 08.24 +70 52 46.53 5.49 (7 ± 2) x 10-3 32 4.891 4.871
3 01 39 21.23 +71 03 44.84 5.96 (3.7 ± 1.1) x 10-3 15 3.381 3.339

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 01 40 03.99 +71 02 40.33 6.65 (2.9 ± 1.0) x 10-3 13 2.715 2.881

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0140.3+7054 Swift-XRT image with known radio, optical and UV sources for 4FGL J0140.3+7054

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J014048.9+704837 01 40 49.01 +70 48 37.44 6.11 ROSAT
1RXS J014049.2+704837 01 40 49.20 +70 48 37.08 6.12 ROSAT
2 1RXS J014136.3+705252 01 41 36.31 +70 52 52.68 6.40 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J014008+705245 01 40 08.59 +70 52 45.12 1.76 NVSS
2 NVSS J014007+705127 01 40 07.30 +70 51 28.08 2.98 NVSS
TGSSADR J014007.4+705122 01 40 07.51 +70 51 21.96 3.06 GMRTAS150M
3 NVSS J013937+705937 01 39 37.30 +70 59 36.96 6.40 NVSS
TGSSADR J013937.3+705937 01 39 37.30 +70 59 38.04 6.41 GMRTAS150M
WN 0135.7+7044 01 39 37.01 +70 59 39.84 6.46 WENSS
4 NVSS J013951+704515 01 39 51.91 +70 45 15.84 9.28 NVSS
WN 0137.1+7050 01 41 06.79 +71 05 22.92 11.76 WENSS
5 NVSS J014105+710540 01 41 05.30 +71 05 40.92 12.01 NVSS
TGSSADR J014223.3+710058 01 42 23.30 +71 00 57.96 12.09 GMRTAS150M
6 NVSS J014223+710100 01 42 23.71 +71 01 00.12 12.14 NVSS
7 NVSS J013854+710415 01 38 54.79 +71 04 14.88 12.17 NVSS
8 V1015 Cas 01 42 06.38 +70 43 39.36 13.73 GCVS

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