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 J0550.8-4400

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J0550.8-4400 Swift-XRT detections in the field for 1FGL J0550.8-4400

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 51 48.83 -43 56 28.69 6.31 (4.8 ± 1.2) x 10-3 18 3.739 4.091

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0550.8-4400 Swift-XRT image with known radio, optical and UV sources for 1FGL J0550.8-4400

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J055058.4-435701 05 50 58.39 -43 57 01.08 3.38 ROSAT
2 1RXS J055024.5-434850 05 50 24.50 -43 48 50.40 12.53 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J055026-440232 05 50 26.30 -44 02 31.92 5.32 SUMSS
2 SUMSS J055026-435658 05 50 26.21 -43 56 58.92 5.85 SUMSS
3 PGC 541694 05 51 31.39 -44 01 28.92 6.99 PGC2003
4 SUMSS J055129-440524 05 51 29.40 -44 05 24.00 8.29 SUMSS
5 PGC 542245 05 51 40.10 -43 58 36.84 8.61 PGC2003
6 SUMSS J055026-440818 05 50 26.59 -44 08 17.88 9.34 SUMSS
7 CD-44 2295 05 51 47.09 -44 00 52.56 9.73 ACRS
HD 39655 05 51 47.11 -44 00 52.92 9.73 HIC
PPM 310157 05 51 47.11 -44 00 52.20 9.73 PPM
HIP 27693 05 51 47.14 -44 00 51.84 9.73 HIPPARCOS
SAO 217582 05 51 47.28 -44 01 01.20 9.77 SAO
8 PGC 541182 05 51 54.00 -44 04 24.96 11.70 PGC2003

Penn State University Goddard Space Flight Center Swift