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.

3FGL J1720.3-0428

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1720.3-0428 Swift-XRT detections in the field for 3FGL J1720.3-0428


No detected excesses found.

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 20 32.91 -04 33 14.91 7.97 (2.2 ± 1.0) x 10-3 8 2.505 2.139

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1720.3-0428 Swift-XRT image with known radio, optical and UV sources for 3FGL J1720.3-0428


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 J172018-042722 17 20 18.60 -04 27 23.04 1.49 NVSS
2 NVSS J172008-042623 17 20 08.90 -04 26 22.92 4.06 NVSS
TGSSADR J172009.1-042614 17 20 09.10 -04 26 13.92 4.08 GMRTAS150M
3 NVSS J172008-042520 17 20 08.59 -04 25 19.92 4.71 NVSS
4 NVSS J172044-043431 17 20 44.90 -04 34 31.08 8.21 NVSS
5 NVSS J172021-041742 17 20 21.19 -04 17 42.00 10.67 NVSS
6 NVSS J172037-041756 17 20 37.61 -04 17 56.04 11.04 NVSS
7 NVSS J172108-043507 17 21 08.90 -04 35 07.08 13.27 NVSS
TGSSADR J172109.1-043503 17 21 09.10 -04 35 03.84 13.28 GMRTAS150M
8 NVSS J171953-043950 17 19 53.90 -04 39 51.12 13.60 NVSS
9 NVSS J172106-041806 17 21 06.70 -04 18 06.12 14.94 NVSS

Penn State University Goddard Space Flight Center Swift