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 J1657.7-4656c

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1657.7-4656c Swift-XRT detections in the field for 4FGL J1657.7-4656c


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 J1657.7-4656c Swift-XRT image with known radio, optical and UV sources for 4FGL J1657.7-4656c


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 HD 329296 16 57 45.12 -46 55 27.12 0.62 HDEC
2 HD 329297 16 58 01.99 -47 00 35.64 5.53 HDEC
3 PPM 322454 16 57 14.64 -46 53 08.16 5.75 PPM
SAO 227483 16 57 14.66 -46 53 07.44 5.76 SAO
4 MGPS J165808-470128 16 58 08.30 -47 01 27.84 6.86 MGPS2
5 PGCC G339.99-2.44 16 57 47.30 -46 48 07.92 7.92 PLANCKGCC
6 [SPT2015] ATCA J1657-4647 16 57 41.71 -46 47 11.04 8.85 FER2FUSRID
7 TGSSADR J165831.6-470009 16 58 31.61 -47 00 09.00 9.15 GMRTAS150M
MGPS J165831-470007 16 58 31.70 -47 00 07.92 9.16 MGPS2
8 SAO 227497 16 57 56.35 -47 05 23.64 9.61 SAO
PPM 322466 16 57 56.30 -47 05 25.80 9.64 PPM
9 MGPS J165718-464603 16 57 18.10 -46 46 03.00 10.90 MGPS2
10 SAO 227470 16 56 43.63 -47 01 08.76 11.46 SAO
CD-4611121 16 56 43.63 -47 01 10.20 11.47 ACRS
PPM 322444 16 56 43.61 -47 01 09.84 11.47 PPM
11 HD 329298 16 58 52.82 -46 52 47.28 12.23 HDEC
12 PMN J1656-4705 16 56 59.90 -47 05 58.92 12.45 PMN
13 PPM 762371 16 58 53.33 -46 49 45.12 13.44 PPM
HD 329299 16 58 53.35 -46 49 45.12 13.45 HDEC

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