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 J0538.9+1646

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0538.9+1646 Swift-XRT detections in the field for 3FGL J0538.9+1646


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 05 39 11.62 +16 39 50.25 9.05 (6 ± 2) x 10-3 8 2.615 2.681
2 05 38 50.36 +16 56 44.49 7.09 (7 ± 3) x 10-3 11 2.748 2.537
3 05 38 45.18 +16 54 58.10 7.27 (4 ± 2) x 10-3 7 2.190 2.064

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0538.9+1646 Swift-XRT image with known radio, optical and UV sources for 3FGL J0538.9+1646


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 GB6 J0538+1646 05 38 58.80 +16 46 26.04 0.21 GB6
2 NVSS J053855+164612 05 38 55.10 +16 46 13.08 1.10 NVSS
3 NVSS J053916+165023 05 39 16.70 +16 50 24.00 5.71 NVSS
GB6 J0539+1648 05 39 24.19 +16 48 47.16 6.34 GB6
4 NVSS J053924+164819 05 39 25.01 +16 48 20.16 6.36 NVSS
TGSSADR J053925.0+164818 05 39 25.10 +16 48 19.08 6.37 GMRTAS150M
5 NVSS J053921+165020 05 39 21.79 +16 50 20.04 6.60 NVSS
TGSSADR J053930.5+164753 05 39 30.50 +16 47 53.16 7.53 GMRTAS150M
6 NVSS J053930+164754 05 39 30.60 +16 47 53.88 7.55 NVSS
7 OG+160 05 39 26.90 +16 50 35.88 7.74 DIXON
8 NVSS J053854+163826 05 38 54.89 +16 38 26.16 8.04 NVSS
TGSSADR J053932.4+164220 05 39 32.50 +16 42 20.16 8.85 GMRTAS150M
9 NVSS J053932+164218 05 39 32.71 +16 42 18.00 8.92 NVSS
10 NVSS J053846+163638 05 38 46.99 +16 36 38.16 10.23 NVSS
TGSSADR J053823.3+164039 05 38 23.40 +16 40 39.00 10.42 GMRTAS150M
11 NVSS J053823+164040 05 38 23.21 +16 40 41.16 10.43 NVSS

Penn State University Goddard Space Flight Center Swift