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 J1511.9-2253

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1511.9-2253 Swift-XRT detections in the field for 1FGL J1511.9-2253

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 12 12.82 -22 55 06.68 4.28 (2.5 ± 0.3) x 10-2 96 8.992 9.191
2 15 11 37.08 -22 57 44.38 5.00 (10 ± 2) x 10-3 37 5.356 5.283
3 15 12 11.76 -23 02 28.12 5.40 (4.8 ± 1.2) x 10-3 23 4.258 3.845
4 15 12 05.75 -23 01 51.04 5.59 (3.9 ± 1.2) x 10-3 22 3.604 3.354

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1511.9-2253 Swift-XRT image with known radio, optical and UV sources for 1FGL J1511.9-2253

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J151158.6-225421 15 11 58.61 -22 54 21.60 1.08 ROSAT
2 RXC J1512.2-2254 15 12 12.62 -22 54 59.04 3.96 ROSAT
6dFGS J1512127-225508 15 12 12.74 -22 55 08.40 4.05 ROSAT
1RXS J151213.1-225515 15 12 12.84 -22 55 08.40 4.07 ROSAT
1RXS J151213.1-225515 15 12 13.10 -22 55 14.88 4.17 ROSAT
1RXS J151213.1-225515 15 12 13.10 -22 55 14.88 4.17 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J151201-225602 15 12 01.01 -22 56 02.04 2.85 NVSS
QORG J151213.8-225212 15 12 13.80 -22 52 12.00 4.03 QORGCAT
2 NVSS J151213-225210 15 12 13.80 -22 52 10.92 4.04 NVSS
QORG J151212.8-225509 15 12 12.79 -22 55 09.12 4.06 QORGCAT
3 NVSS J151212-225508 15 12 12.79 -22 55 08.04 4.07 NVSS
4 NVSS J151213-224846 15 12 13.30 -22 48 46.08 5.91 NVSS
5 NVSS J151222-225033 15 12 22.01 -22 50 34.08 6.40 NVSS
6 PGC 808488 15 11 22.70 -22 48 55.08 9.06 PGC2003
7 PGC 809355 15 11 31.80 -22 45 20.16 9.89 PGC2003
8 WDS J15113-2249 15 11 18.00 -22 49 00.12 9.98 WDS

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