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 J0239.1+6634

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0239.1+6634 Swift-XRT detections in the field for 4FGL J0239.1+6634

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 02 38 57.88 +66 30 48.34 5.08 (3.0 ± 0.8) x 10-3 26 3.558 3.719
2 02 37 44.12 +66 32 08.41 5.31 (2.9 ± 0.8) x 10-3 24 3.537 3.647
3 02 37 40.79 +66 34 46.75 4.76 (2.3 ± 0.7) x 10-3 29 3.449 3.121

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 02 39 02.20 +66 46 46.71 5.53 (1.4 ± 0.6) x 10-3 13 2.451 2.476
2 02 37 51.15 +66 35 38.97 5.28 (1.5 ± 0.7) x 10-3 13 2.480 2.343
3 02 40 26.69 +66 43 54.72 5.00 (1.4 ± 0.6) x 10-3 20 2.607 2.327

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0239.1+6634 Swift-XRT image with known radio, optical and UV sources for 4FGL J0239.1+6634


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 J023903+663435 02 39 03.50 +66 34 35.04 0.50 NVSS
TGSSADR J023902.4+663442 02 39 02.50 +66 34 42.96 0.57 GMRTAS150M
WN 0234.8+6621 02 39 02.40 +66 34 49.08 0.58 WENSS
2 NVSS J023941+663654 02 39 41.90 +66 36 55.08 3.98 NVSS
TGSSADR J023942.2+663655 02 39 42.19 +66 36 56.16 4.01 GMRTAS150M
WN 0235.5+6623 02 39 44.81 +66 36 50.04 4.18 WENSS
3 NVSS J023816+663905 02 38 16.10 +66 39 06.12 6.73 NVSS
TGSSADR J023816.2+663909 02 38 16.20 +66 39 10.08 6.77 GMRTAS150M
WN 0234.0+6626 02 38 15.31 +66 39 10.08 6.84 WENSS
0236+6617 02 40 20.59 +66 30 02.16 8.63 NORTH6CM
0236+6617 02 40 20.59 +66 30 02.16 8.63 NORTH20CM
7C 023610.5+661715 02 40 21.60 +66 30 06.84 8.67 GP7C151MHZ
GB6 J0240+6629 02 40 20.50 +66 29 54.96 8.69 GB6
WN 0236.1+6617 02 40 21.79 +66 30 06.12 8.69 WENSS
4 NVSS J024021+663006 02 40 22.01 +66 30 06.84 8.70 NVSS
TXS 0236+662 02 40 21.89 +66 30 06.12 8.70 TEXAS
TGSSADR J024022.0+663006 02 40 22.10 +66 30 06.84 8.71 GMRTAS150M
WN 0234.9+6630 02 39 06.31 +66 43 30.00 8.73 WENSS
QORG J024022.4+663006 02 40 22.39 +66 30 06.12 8.74 QORGCAT
5 NVSS J023740+663451 02 37 40.10 +66 34 51.96 8.75 NVSS
TGSSADR J023906.2+664331 02 39 06.19 +66 43 32.16 8.76 GMRTAS150M
6 NVSS J023905+664333 02 39 05.90 +66 43 32.88 8.78 NVSS
VLSSr J024022.4+662951 02 40 22.51 +66 29 51.00 8.88 VLSSR
7 BD+65 278 02 37 39.55 +66 30 35.28 9.76 ACRS
PPM 13772 02 37 39.50 +66 30 35.28 9.77 PPM
8 NVSS J024047+663408 02 40 46.99 +66 34 08.04 9.85 NVSS
9 PGCC G133.44+5.75 02 39 15.00 +66 24 03.96 10.73 PLANCKGCC
10 NVSS J023723+663847 02 37 23.50 +66 38 47.04 11.14 NVSS
TGSSADR J023723.1+663858 02 37 23.21 +66 38 58.92 11.23 GMRTAS150M
WN 0233.2+6626 02 37 23.21 +66 39 02.16 11.25 WENSS

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