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 J1956.2-0238

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1956.2-0238 Swift-XRT detections in the field for 1FGL J1956.2-0238

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 19 56 17.56 -02 43 14.14 6.65 (4.6 ± 1.4) x 10-3 13 3.215 3.247

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 56 11.82 -02 38 22.75 7.97 (3.1 ± 1.2) x 10-3 10 2.594 2.598
2 19 55 31.81 -02 35 35.80 6.65 (2.6 ± 1.1) x 10-3 11 2.594 2.397

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1956.2-0238 Swift-XRT image with known radio, optical and UV sources for 1FGL J1956.2-0238

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J195617.6-024310 19 56 17.62 -02 43 10.92 4.74 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J195618-023423 19 56 18.19 -02 34 23.16 4.54 NVSS
[SPT2015] ATCA J1956-0234 19 56 18.19 -02 34 14.88 4.66 FER2FUSRID
2 [SPT2015] ATCA J1955-0238 19 55 52.10 -02 38 57.12 4.98 FER2FUSRID
3 NVSS J195633-023355 19 56 33.31 -02 33 56.16 7.11 NVSS
GLEAM J195619-024534 19 56 19.70 -02 45 33.84 7.18 GLEAMEGCAT
[SPT2015] ATCA J1956-0245 19 56 18.70 -02 45 41.04 7.23 FER2FUSRID
4 NVSS J195618-024545 19 56 18.91 -02 45 45.00 7.30 NVSS
TGSSADR J195618.9-024545 19 56 18.91 -02 45 45.00 7.31 GMRTAS150M
5 NVSS J195539-024013 19 55 39.60 -02 40 13.08 8.25 NVSS
6 NVSS J195538-024409 19 55 38.71 -02 44 08.88 9.98 NVSS
7 NVSS J195545-024658 19 55 45.60 -02 46 59.16 10.63 NVSS
8 NVSS J195655-023820 19 56 55.01 -02 38 21.12 10.75 NVSS
9 NVSS J195531-023443 19 55 31.20 -02 34 42.96 10.92 NVSS
[SPT2015] ATCA J1955-0234 19 55 31.10 -02 34 40.08 10.96 FER2FUSRID
10 NVSS J195536-022955 19 55 36.41 -02 29 54.96 12.46 NVSS

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