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 J1644.6-0911

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1644.6-0911 Swift-XRT detections in the field for 3FGL J1644.6-0911


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 16 45 07.83 -09 15 21.04 6.93 (4 ± 2) x 10-3 12 2.487 2.717
2 16 44 56.13 -09 02 57.53 7.71 (3.2 ± 1.4) x 10-3 8 2.548 2.304

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1644.6-0911 Swift-XRT image with known radio, optical and UV sources for 3FGL J1644.6-0911


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
TGSSADR J164439.4-091245 16 44 39.41 -09 12 45.00 1.72 GMRTAS150M
1 NVSS J164438-091248 16 44 38.81 -09 12 47.88 1.82 NVSS
2 NVSS J164433-091003 16 44 33.70 -09 10 03.00 2.26 NVSS
3 NVSS J164453-090727 16 44 53.30 -09 07 27.12 4.66 NVSS
4 NVSS J164426-090731 16 44 26.50 -09 07 31.08 5.20 NVSS
TGSSADR J164426.5-090730 16 44 26.50 -09 07 30.00 5.22 GMRTAS150M
5 NVSS J164506-091217 16 45 07.01 -09 12 16.92 6.34 NVSS
TGSSADR J164507.0-091216 16 45 07.01 -09 12 16.92 6.36 GMRTAS150M
GLEAM J164507-091212 16 45 07.51 -09 12 12.96 6.47 GLEAMEGCAT
6 NVSS J164411-091432 16 44 11.71 -09 14 31.92 8.15 NVSS
7 NVSS J164450-090248 16 44 50.81 -09 02 48.84 8.62 NVSS
8 NVSS J164412-092007 16 44 12.79 -09 20 07.08 11.47 NVSS
9 NVSS J164525-090005 16 45 25.90 -09 00 06.12 15.53 NVSS

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