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.

1FGL J1739.4+8717

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1739.4+8717 Swift-XRT detections in the field for 1FGL J1739.4+8717

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 41 38.78 +87 14 40.28 6.65 (3.4 ± 1.1) x 10-3 14 3.141 3.149
2 17 41 39.07 +87 24 40.96 5.76 (3.6 ± 1.2) x 10-3 19 3.651 3.053

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 17 32 50.00 +87 26 44.21 7.71 (2.1 ± 0.8) x 10-3 9 2.462 2.552
2 17 42 03.08 +87 23 30.41 6.04 (2.5 ± 1.0) x 10-3 14 2.866 2.505
3 17 28 41.56 +87 23 16.16 5.59 (2.5 ± 1.1) x 10-3 13 2.528 2.352

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1739.4+8717 Swift-XRT image with known radio, optical and UV sources for 1FGL J1739.4+8717

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J174143.1+871440 17 41 43.13 +87 14 40.92 3.14 SWIFT
2 SWIFT J174144.1+872440 17 41 44.14 +87 24 40.68 7.46 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J173722+871744 17 37 22.99 +87 17 44.88 1.54 NVSS
[SPT2015] VLA J1737+8717 17 37 22.20 +87 17 44.16 1.54 FER2FUSRID
WN 1758.4+8718 17 37 21.10 +87 17 44.88 1.56 WENSS
TGSSADR J173720.0+871746 17 37 19.99 +87 17 47.04 1.58 GMRTAS150M
2 [ZWJ2016] 21CMA J1736.4+8717 17 36 29.11 +87 16 59.88 2.17 NCP21CMA
3 NVSS J173218+871656 17 32 18.19 +87 16 57.00 5.12 NVSS
4 NVSS J173518+871229 17 35 18.31 +87 12 29.16 5.74 NVSS
5 [ZWJ2016] 21CMA J1728.6+8722 17 28 39.19 +87 22 00.12 8.87 NCP21CMA
6 NVSS J175111+872154 17 51 11.90 +87 21 55.08 9.36 NVSS
7 NVSS J172835+872307 17 28 35.81 +87 23 07.08 9.51 NVSS
WN 1750.4+8724 17 28 35.69 +87 23 11.04 9.55 WENSS
8 NVSS J174944+871120 17 49 44.50 +87 11 21.12 9.56 NVSS
9 NVSS J174928+872514 17 49 28.99 +87 25 14.16 10.46 NVSS
10 NVSS J172551+872548 17 25 51.70 +87 25 48.00 12.63 NVSS

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