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 J1641.3-2908

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1641.3-2908 Swift-XRT detections in the field for 4FGL J1641.3-2908


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 40 22.95 -29 05 55.13 8.27 (4 ± 2) x 10-3 8 2.553 2.692

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1641.3-2908 Swift-XRT image with known radio, optical and UV sources for 4FGL J1641.3-2908

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J164039.2-285759 16 40 39.19 -28 57 59.40 13.87 ROSAT
2RXS J164039.1-285759 16 40 39.17 -28 57 59.40 13.88 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J164109-290602 16 41 09.79 -29 06 02.88 3.42 NVSS
GLEAM J164110-290242 16 41 10.20 -29 02 43.08 6.15 GLEAMEGCAT
TGSSADR J164111.9-290229 16 41 12.00 -29 02 30.12 6.22 GMRTAS150M
2 NVSS J164111-290228 16 41 12.00 -29 02 29.04 6.23 NVSS
SUMSS J164112-290220 16 41 12.00 -29 02 21.12 6.35 SUMSS
3 NVSS J164103-290238 16 41 03.60 -29 02 39.12 6.90 NVSS
4 PPM 732817 16 41 39.02 -29 01 33.96 7.81 PPM
5 NSV 7906 16 41 37.01 -29 16 23.88 8.74 GCVSNSVARS
6 HIP 81767 16 42 07.27 -29 07 29.28 10.07 HIPPARCOS
PPM 265812 16 42 07.32 -29 07 30.00 10.07 PPM
CD-2812301 16 42 07.32 -29 07 30.00 10.08 ACRS
SAO 184553 16 42 07.34 -29 07 29.64 10.08 SAO
HD 150437 16 42 07.37 -29 07 30.36 10.08 HIC
7 SPASS J164151-285650 16 41 51.70 -28 56 51.00 13.29 SPASS2P3GH
8 NVSS J164202-285701 16 42 02.81 -28 57 01.08 14.51 NVSS
TGSSADR J164203.0-285659 16 42 03.10 -28 56 60.00 14.57 GMRTAS150M

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