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.

1FGL J1916.9-3028

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1916.9-3028 Swift-XRT detections in the field for 1FGL J1916.9-3028

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 16 13.75 -30 27 30.74 4.26 (2.7 ± 0.3) x 10-2 87 8.659 8.340
2 19 17 04.37 -30 19 22.47 5.02 (7 ± 2) x 10-3 29 4.438 4.219
3 19 16 50.58 -30 36 05.19 5.59 (3.5 ± 1.1) x 10-3 23 3.106 3.293

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 17 27.52 -30 25 14.64 5.20 (3.2 ± 1.1) x 10-3 22 2.969 2.879
2 19 16 45.97 -30 18 45.98 5.53 (3.1 ± 1.1) x 10-3 19 2.937 2.771
3 19 17 23.49 -30 23 10.78 5.28 (2.3 ± 1.0) x 10-3 20 2.591 2.334

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1916.9-3028 Swift-XRT image with known radio, optical and UV sources for 1FGL J1916.9-3028

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 8.98 SWIFT
2RXS J191614.0-302727 19 16 14.40 -30 27 27.36 9.16 ROSAT
2RXS J191614.0-302727 19 16 14.40 -30 27 27.36 9.16 ROSAT
1RXS J191614.0-302727 19 16 13.99 -30 27 27.00 9.17 ROSAT
1RXS J191614.0-302727 19 16 13.99 -30 27 27.00 9.17 ROSAT
2 XMMSL2 J191613.8-302741 19 16 13.73 -30 27 40.68 9.21 XMM-NEWTON
XMMSL2 J191613.8-302741 19 16 13.73 -30 27 40.68 9.21 XMM-NEWTON
HD 180068 19 16 13.51 -30 27 34.56 9.26 ROSAT
SWIFT J191613.1-302726 19 16 13.18 -30 27 26.28 9.34 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J191648-303127 19 16 48.19 -30 31 27.12 3.71 NVSS
2 NVSS J191640-302444 19 16 40.30 -30 24 43.92 4.89 NVSS
3 NVSS J191648-303838 19 16 48.50 -30 38 38.04 10.59 NVSS
4 NVSS J191607-302640 19 16 07.51 -30 26 39.84 10.65 NVSS
SUMSS J191607-302625 19 16 07.39 -30 26 25.08 10.70 SUMSS
5 NVSS J191626-301838 19 16 26.40 -30 18 38.16 11.53 NVSS
6 NVSS J191612-301940 19 16 12.79 -30 19 41.16 12.68 NVSS
7 NVSS J191627-301704 19 16 27.60 -30 17 03.84 12.72 NVSS
TGSSADR J191602.3-302207 19 16 02.30 -30 22 06.96 13.14 GMRTAS150M
8 NVSS J191602-302205 19 16 02.40 -30 22 05.88 13.15 NVSS
GLEAM J191602-302148 19 16 02.69 -30 21 47.88 13.22 GLEAMEGCAT
SUMSS J191602-302154 19 16 02.30 -30 21 55.08 13.25 SUMSS
9 NVSS J191604-302102 19 16 04.39 -30 21 02.88 13.30 NVSS

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