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 J2039.7+1237

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J2039.7+1237 Swift-XRT detections in the field for 3FGL J2039.7+1237

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 39 35.76 +12 30 01.89 5.59 (7 ± 2) x 10-3 27 4.532 4.057
2 20 40 10.67 +12 44 02.90 6.12 (4.0 ± 1.3) x 10-3 15 3.158 3.091
3 20 39 24.35 +12 38 18.95 7.48 (3.6 ± 1.2) x 10-3 12 2.759 3.020

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 20 40 02.68 +12 35 45.95 6.52 (3.8 ± 1.3) x 10-3 13 2.794 2.873
2 20 39 28.20 +12 40 54.76 7.71 (3.0 ± 1.2) x 10-3 9 2.410 2.458

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2039.7+1237 Swift-XRT image with known radio, optical and UV sources for 3FGL J2039.7+1237


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 J203945+124150 20 39 45.10 +12 41 49.92 4.29 NVSS
2 NVSS J204002+123549 20 40 02.40 +12 35 49.92 4.59 NVSS
3 GB6 J2040+1234 20 40 08.50 +12 34 28.92 6.51 GB6
2037+1223 20 40 08.90 +12 34 01.92 6.82 NORTH6CM
4 NVSS J204009+123355 20 40 09.50 +12 33 55.08 7.00 NVSS
TGSSADR J204009.5+123354 20 40 09.50 +12 33 54.00 7.01 GMRTAS150M
TXS 2037+123 20 40 09.60 +12 33 55.08 7.03 TEXAS
GLEAM J204010+123353 20 40 10.01 +12 33 54.00 7.13 GLEAMEGCAT
VLSSr J204010.1+123351 20 40 10.20 +12 33 51.12 7.18 VLSSR
5 NVSS J203917+123350 20 39 17.90 +12 33 50.04 7.58 NVSS
6 VLSSr J203956.1+124504 20 39 56.21 +12 45 03.96 8.00 VLSSR
7 NVSS J203948+122929 20 39 48.50 +12 29 30.12 8.11 NVSS
8 NVSS J203919+123143 20 39 19.70 +12 31 42.96 8.50 NVSS
9 NVSS J203958+124528 20 39 58.20 +12 45 29.16 8.56 NVSS
TGSSADR J203958.3+124529 20 39 58.39 +12 45 29.88 8.58 GMRTAS150M
GB6 J2039+1245 20 39 57.79 +12 45 45.00 8.77 GB6
10 NVSS J203911+124200 20 39 11.40 +12 42 01.08 9.32 NVSS
TGSSADR J203911.3+124200 20 39 11.30 +12 42 01.08 9.34 GMRTAS150M

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