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 J0855.4-4818

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0855.4-4818 Swift-XRT detections in the field for 3FGL J0855.4-4818

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 08 55 05.78 -48 15 17.94 5.40 (8 ± 2) x 10-3 30 4.225 4.328

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 08 54 52.91 -48 24 39.82 6.31 (3.2 ± 1.2) x 10-3 10 2.457 2.588

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0855.4-4818 Swift-XRT image with known radio, optical and UV sources for 3FGL J0855.4-4818

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J085528.8-482021 08 55 28.87 -48 20 21.48 1.51 ROSAT
2 2RXS J085542.9-481712 08 55 42.98 -48 17 12.84 3.44 ROSAT
3 2RXS J085521.9-482233 08 55 21.91 -48 22 33.24 3.62 ROSAT
4 2RXS J085546.5-481948 08 55 46.51 -48 19 48.72 3.64 ROSAT
5 2RXS J085517.4-481527 08 55 17.45 -48 15 28.08 3.74 ROSAT
6 2RXS J085432.2-482454 08 54 32.28 -48 24 54.00 10.60 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PMN J0855-4819 08 55 24.91 -48 19 45.84 0.79 PMN
2 PMN J0854-4820 08 54 49.80 -48 20 21.12 6.04 PMN
3 PMN J0854-4817 08 54 32.71 -48 17 31.92 8.85 PMN

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