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 J1656.5-2733

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1656.5-2733 Swift-XRT detections in the field for 4FGL J1656.5-2733


No detected excesses found.

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1656.5-2733 Swift-XRT image with known radio, optical and UV sources for 4FGL J1656.5-2733


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
MGPS J165650-273433 16 56 50.40 -27 34 32.88 3.62 MGPS2
TGSSADR J165650.5-273436 16 56 50.50 -27 34 36.12 3.67 GMRTAS150M
1 NVSS J165650-273438 16 56 50.69 -27 34 37.92 3.73 NVSS
2 NVSS J165635-273747 16 56 35.21 -27 37 46.92 4.16 NVSS
3 NVSS J165614-273420 16 56 14.81 -27 34 21.00 4.42 NVSS
4 PPM 266173 16 56 52.44 -27 31 04.80 4.72 PPM
CD-2711295 16 56 52.42 -27 31 04.08 4.72 ACRS
SAO 184820 16 56 52.44 -27 31 01.20 4.75 SAO
5 NVSS J165625-274130 16 56 25.30 -27 41 30.12 8.13 NVSS
6 PPM 732974 16 55 43.15 -27 35 25.44 11.53 PPM
7 PPM 732979 16 55 58.73 -27 24 17.64 12.26 PPM
8 NVSS J165551-274203 16 55 51.70 -27 42 02.88 12.69 NVSS
9 MM Oph 16 57 24.50 -27 40 14.88 12.90 GCVS
10 NVSS J165707-272247 16 57 07.10 -27 22 46.92 13.03 NVSS
11 NVSS J165549-272507 16 55 49.39 -27 25 06.96 13.15 NVSS
MGPS J165549-272510 16 55 49.10 -27 25 09.84 13.16 MGPS2
12 NVSS J165552-272230 16 55 52.80 -27 22 31.08 14.47 NVSS
13 HD 152933 16 57 27.17 -27 24 22.32 14.90 HIC
CD-2711305 16 57 27.17 -27 24 22.68 14.90 ACRS
PPM 266179 16 57 27.22 -27 24 22.68 14.91 PPM
SAO 184829 16 57 27.14 -27 24 21.24 14.91 SAO
HIP 82980 16 57 27.22 -27 24 22.68 14.91 HIPPARCOS
14 NVSS J165543-274526 16 55 43.10 -27 45 25.92 16.40 NVSS

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