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 J1737.9-2511

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1737.9-2511 Swift-XRT detections in the field for 3FGL J1737.9-2511

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 38 12.38 -25 16 21.94 6.65 (4.6 ± 1.4) x 10-3 16 3.234 3.191

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 17 38 18.85 -25 19 32.56 7.27 (3.6 ± 1.3) x 10-3 10 2.676 2.792
2 17 37 53.50 -25 06 40.73 7.97 (3.2 ± 1.2) x 10-3 8 2.460 2.609
3 17 38 39.47 -25 15 38.75 7.71 (2.2 ± 1.0) x 10-3 9 2.266 2.186

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1737.9-2511 Swift-XRT image with known radio, optical and UV sources for 3FGL J1737.9-2511

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SACSHP J173715.0-251733 17 37 14.98 -25 17 32.64 10.95 SWIFT
SACSTP J173714.9-251732 17 37 14.93 -25 17 31.92 10.95 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J173739-251241 17 37 39.70 -25 12 41.04 3.64 NVSS
TGSSADR J173739.3-251246 17 37 39.31 -25 12 46.08 3.75 GMRTAS150M
2 NVSS J173745-252009 17 37 45.91 -25 20 09.96 9.21 NVSS
TGSSADR J173745.8-252010 17 37 45.79 -25 20 09.96 9.22 GMRTAS150M
TGSSADR J173749.9-252038 17 37 49.99 -25 20 38.04 9.53 GMRTAS150M
3 NVSS J173750-252040 17 37 50.40 -25 20 40.92 9.57 NVSS
TGSSADR J173709.7-251706 17 37 09.70 -25 17 06.00 11.70 GMRTAS150M
4 NVSS J173724-250137 17 37 24.10 -25 01 37.92 11.71 NVSS
5 NVSS J173709-251707 17 37 09.50 -25 17 07.08 11.75 NVSS
6 NVSS J173839-250146 17 38 39.70 -25 01 45.84 13.92 NVSS

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