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 J1249.3-2812

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1249.3-2812 Swift-XRT detections in the field for 1FGL J1249.3-2812

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 49 19.45 -28 08 32.72 3.68 (6.9 ± 0.3) x 10-2 475 20.070 20.660
2 12 50 05.69 -28 12 19.20 4.35 (1.05 ± 0.13) x 10-2 76 8.487 7.899
3 12 49 00.43 -28 12 25.55 4.83 (6.1 ± 1.1) x 10-3 51 5.891 5.758

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 49 00.16 -28 09 00.46 5.76 (1.8 ± 0.7) x 10-3 15 2.923 2.842
2 12 48 35.22 -28 11 48.69 6.04 (1.4 ± 0.5) x 10-3 14 2.616 2.670
3 12 49 17.60 -28 02 18.15 5.82 (1.4 ± 0.6) x 10-3 18 2.743 2.357

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1249.3-2812 Swift-XRT image with known radio, optical and UV sources for 1FGL J1249.3-2812

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SWIFT J124919.2-280831 12 49 19.30 -28 08 31.92 4.27 SWIFT
2 SWIFT J124859.5-281221 12 48 59.57 -28 12 21.60 5.22 SWIFT
3 1RXS J124917.8-280657 12 49 17.81 -28 06 56.88 5.89 ROSAT
SWIFT J125005.4-281219 12 50 05.50 -28 12 19.44 9.32 SWIFT
4 1RXS J125006.3-281211 12 50 05.59 -28 12 16.92 9.35 ROSAT
2RXS J125006.1-281210 12 50 06.14 -28 12 10.44 9.48 ROSAT
2RXS J125006.1-281210 12 50 06.14 -28 12 10.44 9.48 ROSAT
1RXS J125006.3-281211 12 50 06.31 -28 12 11.16 9.51 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J124919-280833 12 49 19.30 -28 08 34.08 4.24 NVSS
[PME2013] J1249-2808 12 49 19.51 -28 08 33.00 4.25 AT2FGLUS
[SPT2015] ATCA J1249-2808 12 49 19.51 -28 08 33.00 4.25 FER2FUSRID
2 NVSS J124952-281606 12 49 52.20 -28 16 05.88 7.24 NVSS
GLEAM J124859-281842 12 48 59.71 -28 18 42.84 7.92 GLEAMEGCAT
TGSSADR J124859.7-281844 12 48 59.81 -28 18 45.00 7.94 GMRTAS150M
3 NVSS J124859-281845 12 48 59.59 -28 18 45.00 7.96 NVSS
4 NVSS J125010-280915 12 50 10.01 -28 09 15.12 10.88 NVSS
5 NVSS J124838-281807 12 48 39.00 -28 18 06.84 11.14 NVSS
GLEAM J125014-280845 12 50 14.71 -28 08 45.96 12.02 GLEAMEGCAT
6 NVSS J125017-281520 12 50 17.50 -28 15 20.88 12.24 NVSS
7 NVSS J125015-280848 12 50 15.79 -28 08 48.12 12.24 NVSS
TGSSADR J125015.8-280846 12 50 15.79 -28 08 47.04 12.24 GMRTAS150M
8 NVSS J124842-282243 12 48 42.70 -28 22 44.04 13.40 NVSS
TGSSADR J124842.8-282244 12 48 42.79 -28 22 45.12 13.40 GMRTAS150M

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