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 J1249.1-2808

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1249.1-2808 Swift-XRT detections in the field for 3FGL J1249.1-2808

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 49 19.46 -28 08 33.53 3.64 (8.9 ± 0.4) x 10-2 658 23.930 24.510
2 12 50 05.62 -28 12 19.62 4.21 (1.24 ± 0.14) x 10-2 93 9.438 8.988
3 12 49 00.45 -28 12 24.81 4.72 (5.9 ± 1.0) x 10-3 54 5.996 5.878

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 48 59.52 -28 09 06.51 5.89 (1.9 ± 0.6) x 10-3 21 2.901 2.957
2 12 49 17.65 -28 02 18.72 5.76 (1.8 ± 0.6) x 10-3 19 2.801 2.874
3 12 49 19.47 -28 08 33.50 3.64 N/A 663 2.795 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1249.1-2808 Swift-XRT image with known radio, optical and UV sources for 3FGL J1249.1-2808

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 1.98 SWIFT
2 1RXS J124917.8-280657 12 49 17.81 -28 06 56.88 2.34 ROSAT
3 SWIFT J124859.5-281221 12 48 59.57 -28 12 21.60 4.43 SWIFT
4 2RXS J124816.5-280847 12 48 16.51 -28 08 47.40 11.86 ROSAT
2RXS J124816.5-280847 12 48 16.51 -28 08 47.40 11.86 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 1.99 NVSS
[SPT2015] ATCA J1249-2808 12 49 19.51 -28 08 33.00 2.02 FER2FUSRID
[PME2013] J1249-2808 12 49 19.51 -28 08 33.00 2.02 AT2FGLUS
GLEAM J124859-281842 12 48 59.71 -28 18 42.84 10.36 GLEAMEGCAT
TGSSADR J124859.7-281844 12 48 59.81 -28 18 45.00 10.39 GMRTAS150M
2 NVSS J124859-281845 12 48 59.59 -28 18 45.00 10.40 NVSS
3 NVSS J124825-280309 12 48 25.30 -28 03 09.00 11.34 NVSS
TGSSADR J124825.2-280304 12 48 25.30 -28 03 05.04 11.37 GMRTAS150M
GLEAM J124825-280300 12 48 25.20 -28 03 01.08 11.43 GLEAMEGCAT
4 NVSS J124818-280821 12 48 18.41 -28 08 21.84 11.44 NVSS
5 NVSS J124838-281807 12 48 39.00 -28 18 06.84 11.75 NVSS
6 NVSS J124940-275852 12 49 40.10 -27 58 51.96 11.75 NVSS
7 NVSS J124952-281606 12 49 52.20 -28 16 05.88 11.89 NVSS
8 NVSS J124829-280032 12 48 29.71 -28 00 32.04 12.05 NVSS
9 NVSS J124818-280350 12 48 18.60 -28 03 50.04 12.36 NVSS
10 NVSS J124815-275809 12 48 15.91 -27 58 09.12 15.92 NVSS

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