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.

4FGL J1727.4+0326

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1727.4+0326 Swift-XRT detections in the field for 4FGL J1727.4+0326

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 27 52.04 +03 32 23.27 5.59 (9 ± 2) x 10-3 22 4.057 3.946
2 17 27 03.71 +03 39 03.69 6.31 (6 ± 2) x 10-3 14 3.427 3.112

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1727.4+0326 Swift-XRT image with known radio, optical and UV sources for 4FGL J1727.4+0326

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J172732.0+031513 17 27 31.99 +03 15 13.68 11.83 ROSAT
2 2RXP J172702.7+033826 17 27 02.64 +03 38 26.16 12.98 ROSAT
3 1RXS J172658.6+033839 17 26 58.61 +03 38 39.12 13.67 ROSAT
2RXS J172658.5+033838 17 26 58.51 +03 38 38.76 13.68 ROSAT
2RXS J172658.5+033838 17 26 58.51 +03 38 38.76 13.68 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGC 1252406 17 27 28.39 +03 26 48.84 0.36 PGC2003
2 NVSS J172705+032919 17 27 05.81 +03 29 20.04 5.82 NVSS
3 NVSS J172739+032128 17 27 39.19 +03 21 28.08 6.29 NVSS
4 WDS J17269+0326 17 26 54.00 +03 25 59.88 8.33 WDS
5 567- 34 17 27 59.71 +03 24 41.04 8.45 NLTT
6 BD+03 3409 17 27 07.85 +03 34 07.68 8.61 ACRS
PPM 164017 17 27 07.85 +03 34 08.04 8.62 PPM
7 NVSS J172733+031742 17 27 33.50 +03 17 43.08 9.41 NVSS
8 NVSS J172716+033630 17 27 16.80 +03 36 30.96 9.86 NVSS
9 NVSS J172708+033548 17 27 08.81 +03 35 48.12 9.94 NVSS
10 VV Oph 17 26 47.16 +03 28 03.72 10.03 GCVS
GLEAM J172648+033001 17 26 48.31 +03 30 01.08 10.15 GLEAMEGCAT
TGSSADR J172647.8+033010 17 26 47.81 +03 30 11.16 10.32 GMRTAS150M
11 NVSS J172647+033009 17 26 47.81 +03 30 10.08 10.32 NVSS
12 NVSS J172705+031749 17 27 05.40 +03 17 49.92 10.64 NVSS
13 NVSS J172758+031938 17 27 58.51 +03 19 39.00 10.73 NVSS
14 NVSS J172747+033630 17 27 47.11 +03 36 30.96 10.75 NVSS
PGC 1249975 17 27 58.51 +03 19 36.84 10.75 PGC2003
15 NVSS J172709+031614 17 27 09.79 +03 16 14.88 11.58 NVSS
16 OT+042 17 28 14.71 +03 31 36.12 12.73 DIXON

Penn State University Goddard Space Flight Center Swift