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.

2FGL J1617.5-2657

Field

Detected Excesses

Swift-XRT image of the field for 2FGL J1617.5-2657 Swift-XRT detections in the field for 2FGL J1617.5-2657

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 17 13.32 -26 56 39.75 5.96 (5.4 ± 1.4) x 10-3 20 3.991 3.933

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 16 18 12.10 -26 53 01.26 6.04 (2.1 ± 1.0) x 10-3 11 2.348 2.195
2 16 18 12.23 -26 58 15.75 5.28 (1.5 ± 0.9) x 10-3 14 2.828 1.579

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 2FGL J1617.5-2657 Swift-XRT image with known radio, optical and UV sources for 2FGL J1617.5-2657

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J161714.4-265558 16 17 14.40 -26 55 58.44 4.72 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J161749-265303 16 17 49.51 -26 53 03.84 5.48 NVSS
[SPT2015] ATCA J1617-2653 16 17 49.51 -26 53 03.12 5.50 FER2FUSRID
2 NVSS J161725-265145 16 17 25.10 -26 51 46.08 6.04 NVSS
3 [SPT2015] ATCA J1617-2702 16 17 20.90 -27 02 43.08 6.10 FER2FUSRID
4 NVSS J161725-270636 16 17 25.10 -27 06 36.00 9.42 NVSS
5 NVSS J161650-265660 16 16 50.81 -26 56 60.00 9.77 NVSS
6 NVSS J161653-265306 16 16 53.59 -26 53 07.08 10.10 NVSS
7 NVSS J161816-270141 16 18 16.01 -27 01 41.88 10.18 NVSS
8 NVSS J161648-265918 16 16 48.60 -26 59 18.96 10.42 NVSS
9 NVSS J161705-270759 16 17 05.59 -27 07 59.88 12.39 NVSS

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