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 (3.5 ± 1.1) x 10-3 14 3.144 3.149
2 17 41 39.07 +87 24 40.96 5.76 (3.6 ± 1.2) x 10-3 19 3.653 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 2.868 2.505
3 17 28 41.56 +87 23 16.16 5.59 (2.6 ± 1.1) x 10-3 13 2.530 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


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 J173722+871744 17 37 22.99 +87 17 44.88 1.54 NVSS
WN 1758.4+8718 17 37 21.10 +87 17 44.88 1.56 WENSS
2 NVSS J173218+871656 17 32 18.19 +87 16 57.00 5.12 NVSS
3 NVSS J173518+871229 17 35 18.31 +87 12 29.16 5.74 NVSS
QORG J173511.0+871229 17 35 10.99 +87 12 29.16 5.80 QORGCAT
PGC 3085892 17 35 10.90 +87 12 28.08 5.81 PGC2003
4 PPM 3111 17 46 54.55 +87 20 54.60 6.29 PPM
SAO 2989 17 46 55.80 +87 20 53.88 6.29 SAO
BD+87 174 17 46 55.56 +87 20 54.96 6.30 ACRS
5 NVSS J175111+872154 17 51 11.90 +87 21 55.08 9.36 NVSS
QORG J172837.0+872303 17 28 37.01 +87 23 03.12 9.46 QORGCAT
6 NVSS J172835+872307 17 28 35.81 +87 23 07.08 9.51 NVSS
WN 1750.4+8724 17 28 35.71 +87 23 11.04 9.55 WENSS
7 NVSS J174944+871120 17 49 44.50 +87 11 21.12 9.56 NVSS
8 NVSS J174928+872514 17 49 28.99 +87 25 14.16 10.46 NVSS
9 NVSS J172551+872548 17 25 51.70 +87 25 48.00 12.63 NVSS
QORG J172548.0+872550 17 25 48.00 +87 25 50.16 12.68 QORGCAT

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