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 J1949.6+2355

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1949.6+2355 Swift-XRT detections in the field for 3FGL J1949.6+2355

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 49 12.32 +24 00 16.28 5.82 (7 ± 2) x 10-3 21 4.027 4.017
2 19 48 51.83 +23 57 30.84 6.21 (3.4 ± 1.1) x 10-3 16 3.177 3.081

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 19 48 59.96 +23 53 53.52 6.12 (2.1 ± 1.0) x 10-3 13 2.903 2.207
2 19 50 00.12 +23 49 16.27 7.71 (1.8 ± 0.8) x 10-3 7 2.161 2.181

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1949.6+2355 Swift-XRT image with known radio, optical and UV sources for 3FGL J1949.6+2355


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
WSRTGP 1947+2343 19 50 06.31 +23 50 45.96 7.96 WSRTGP
TGSSADR J195006.8+235046 19 50 06.79 +23 50 45.96 8.05 GMRTAS150M
CGPS J195007+235049 19 50 07.20 +23 50 49.92 8.08 CGPSNGPCAT
1 NVSS J195007+235044 19 50 07.30 +23 50 44.16 8.16 NVSS
WSRTGP 1948+2342 19 50 16.01 +23 50 33.00 9.93 WSRTGP
2 NVSS J195016+235047 19 50 16.80 +23 50 47.04 9.97 NVSS
TGSSADR J195016.9+235048 19 50 16.90 +23 50 48.12 9.99 GMRTAS150M
3 NVSS J194855+235837 19 48 55.99 +23 58 36.84 10.17 NVSS
4 NVSS J194921+234540 19 49 21.00 +23 45 41.04 10.59 NVSS
5 NVSS J194915+234337 19 49 15.70 +23 43 36.84 12.96 NVSS

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