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.

1FGL J2321.4+1738

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J2321.4+1738 Swift-XRT detections in the field for 1FGL J2321.4+1738

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 23 21 35.86 +17 39 13.23 6.41 (3.1 ± 1.0) x 10-3 14 3.001 3.005

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 23 21 59.83 +17 41 31.58 6.65 (1.9 ± 0.8) x 10-3 14 2.357 2.361
2 23 21 51.05 +17 50 38.32 7.09 (1.9 ± 0.8) x 10-3 8 2.527 2.352
3 23 20 56.50 +17 46 23.69 6.78 (2.0 ± 0.9) x 10-3 8 2.451 2.326

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J2321.4+1738 Swift-XRT image with known radio, optical and UV sources for 1FGL J2321.4+1738


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 J232058+173852 23 20 58.51 +17 38 52.08 6.61 NVSS
TGSSADR J232202.4+173751 23 22 02.50 +17 37 50.88 8.69 GMRTAS150M
2 NVSS J232202+173756 23 22 02.71 +17 37 55.92 8.72 NVSS
3 NVSS J232100+174657 23 21 00.70 +17 46 58.08 10.18 NVSS
TGSSADR J232100.7+174657 23 21 00.70 +17 46 58.08 10.18 GMRTAS150M
4 NVSS J232040+174446 23 20 40.30 +17 44 45.96 12.46 NVSS
5 NVSS J232054+172750 23 20 54.60 +17 27 51.12 13.28 NVSS
6 NVSS J232058+172703 23 20 58.20 +17 27 02.88 13.50 NVSS

Penn State University Goddard Space Flight Center Swift