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 J1917.1-3024

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1917.1-3024 Swift-XRT detections in the field for 3FGL J1917.1-3024

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 16 13.69 -30 27 30.50 4.28 (2.5 ± 0.3) x 10-2 82 8.352 7.981
2 19 17 04.57 -30 19 30.43 5.05 (7 ± 2) x 10-3 35 4.547 4.378
3 19 16 50.57 -30 36 04.60 5.59 (3.4 ± 1.0) x 10-3 23 3.066 3.261

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 16 45.85 -30 18 44.42 5.44 (3.5 ± 1.2) x 10-3 20 2.940 2.992
2 19 17 27.41 -30 25 11.58 5.24 (3.0 ± 1.1) x 10-3 24 3.015 2.802
3 19 17 45.39 -30 21 37.31 6.12 (2.1 ± 0.8) x 10-3 13 2.571 2.534
4 19 17 23.54 -30 23 20.25 5.40 (2.4 ± 1.0) x 10-3 21 2.578 2.361

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1917.1-3024 Swift-XRT image with known radio, optical and UV sources for 3FGL J1917.1-3024

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J191704.2-301921 19 17 04.22 -30 19 21.72 5.74 SWIFT
2RXS J191614.0-302727 19 16 14.40 -30 27 27.36 12.15 ROSAT
2RXS J191614.0-302727 19 16 14.40 -30 27 27.36 12.15 ROSAT
1RXS J191614.0-302727 19 16 13.99 -30 27 27.00 12.16 ROSAT
1RXS J191614.0-302727 19 16 13.99 -30 27 27.00 12.16 ROSAT
2 XMMSL2 J191613.8-302741 19 16 13.73 -30 27 40.68 12.26 XMM-NEWTON
XMMSL2 J191613.8-302741 19 16 13.73 -30 27 40.68 12.26 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J191640-302444 19 16 40.30 -30 24 43.92 6.25 NVSS
2 NVSS J191648-303127 19 16 48.19 -30 31 27.12 7.88 NVSS
3 NVSS J191753-302256 19 17 53.81 -30 22 55.92 9.82 NVSS
4 NVSS J191626-301838 19 16 26.40 -30 18 38.16 11.21 NVSS
5 NVSS J191627-301704 19 16 27.60 -30 17 03.84 11.97 NVSS
6 NVSS J191755-303443 19 17 55.39 -30 34 42.96 13.92 NVSS

Penn State University Goddard Space Flight Center Swift