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.

2FGL J1748.8+3418

Field

Detected Excesses
Swift-XRT image of the field for 2FGL J1748.8+3418 Swift-XRT detections in the field for 2FGL J1748.8+3418

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 49 24.92 +34 19 49.11 5.76 (4.5 ± 1.4) x 10-3 19 3.791 3.229

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 48 53.96 +34 16 48.55 6.65 (4.1 ± 1.4) x 10-3 16 2.709 2.880
2 17 49 02.03 +34 13 47.53 6.65 (3.1 ± 1.2) x 10-3 13 2.683 2.694
3 17 47 51.98 +34 16 39.83 6.93 (3.0 ± 1.1) x 10-3 9 2.688 2.691

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 2FGL J1748.8+3418 Swift-XRT image with known radio, optical and UV sources for 2FGL J1748.8+3418

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J174913.4+341844 17 49 13.49 +34 18 44.28 4.80 ROSAT
2RXS J174913.4+341844 17 49 13.49 +34 18 44.28 4.80 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J174822+341916 17 48 22.61 +34 19 17.04 5.84 NVSS
WN 1747.3+3426 17 49 10.99 +34 25 27.84 8.42 WENSS
2 NVSS J174811+341538 17 48 11.40 +34 15 38.16 8.45 NVSS
3 NVSS J174911+342528 17 49 11.50 +34 25 27.84 8.48 NVSS
WN 1747.6+3424 17 49 29.11 +34 23 15.00 9.45 WENSS
4 NVSS J174929+342311 17 49 29.40 +34 23 12.12 9.47 NVSS
TGSSADR J174929.3+342317 17 49 29.30 +34 23 17.88 9.52 GMRTAS150M
5 NVSS J174821+340919 17 48 21.10 +34 09 19.08 10.75 NVSS
WN 1746.5+3409 17 48 20.90 +34 09 05.04 10.97 WENSS
WN 1747.8+3412 17 49 36.50 +34 12 06.84 11.30 WENSS
6 NVSS J174936+341156 17 49 36.50 +34 11 56.04 11.41 NVSS
7 NVSS J174818+340754 17 48 18.31 +34 07 54.84 12.24 NVSS
8 NVSS J174755+341317 17 47 55.20 +34 13 17.04 12.42 NVSS
9 WN 1748.0+3426A 17 49 47.90 +34 23 39.12 13.06 WENSS
10 NVSS J174823+343012 17 48 23.21 +34 30 11.88 13.25 NVSS

Penn State University Goddard Space Flight Center Swift