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 J1250.2-0233

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1250.2-0233 Swift-XRT detections in the field for 3FGL J1250.2-0233

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 50 25.21 -02 22 41.65 5.31 (3.5 ± 0.9) x 10-3 24 3.893 3.755

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 12 50 06.89 -02 25 46.97 6.04 (1.8 ± 0.7) x 10-3 13 2.555 2.546
2 12 49 59.01 -02 23 14.38 6.41 (1.8 ± 0.7) x 10-3 10 2.389 2.467
3 12 50 24.35 -02 27 05.10 6.65 (1.5 ± 0.6) x 10-3 12 2.370 2.441
4 12 49 53.96 -02 41 32.58 5.49 (1.6 ± 0.7) x 10-3 16 2.804 2.365

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1250.2-0233 Swift-XRT image with known radio, optical and UV sources for 3FGL J1250.2-0233

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J125026.5-022244 12 50 26.59 -02 22 44.76 11.38 ROSAT
2RXS J125026.5-022244 12 50 26.59 -02 22 44.76 11.38 ROSAT
1RXS J125026.7-022242 12 50 26.69 -02 22 41.88 11.43 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J125025-023319 12 50 25.61 -02 33 19.08 2.39 NVSS
FIRST J125025.6-023319 12 50 25.61 -02 33 20.16 2.40 FIRST
2 FIRST J124954.6-023756 12 49 54.60 -02 37 55.92 6.78 FIRST
3 FIRST J125006.0-022655 12 50 06.00 -02 26 56.04 7.36 FIRST
4 NVSS J124949-022756 12 49 49.61 -02 27 56.88 8.89 NVSS
5 FIRST J125023.1-022452 12 50 23.11 -02 24 52.92 9.11 FIRST
FIRST J125006.2-024423 12 50 06.31 -02 44 22.92 10.85 FIRST
6 NVSS J125006-024426 12 50 06.41 -02 44 26.16 10.89 NVSS
FIRST J125043.8-024230 12 50 43.80 -02 42 29.88 11.07 FIRST
7 FIRST J125056.9-023812 12 50 57.00 -02 38 12.12 11.08 FIRST
8 NVSS J125043-024231 12 50 43.90 -02 42 30.96 11.09 NVSS
FIRST J124948.5-024242 12 49 48.50 -02 42 42.12 11.26 FIRST
9 NVSS J124948-024243 12 49 48.50 -02 42 43.92 11.28 NVSS
10 FIRST J125101.9-023427 12 51 01.99 -02 34 27.12 11.43 FIRST
GLEAM J125030-024542 12 50 30.41 -02 45 42.84 12.40 GLEAMEGCAT
FIRST J124941.2-024333 12 49 41.30 -02 43 32.88 13.07 FIRST
11 NVSS J124941-024333 12 49 40.99 -02 43 33.96 13.12 NVSS

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