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.

4FGL J0550.5-4356

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0550.5-4356 Swift-XRT detections in the field for 4FGL J0550.5-4356


No detected excesses found.

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 05 50 27.89 -43 49 03.80 6.12 (2.1 ± 0.8) x 10-3 12 2.616 2.545
2 05 51 21.03 -43 56 46.87 5.96 (2.0 ± 0.8) x 10-3 14 3.149 2.472
3 05 50 39.44 -43 50 17.70 6.31 (1.8 ± 0.7) x 10-3 15 2.598 2.445
4 05 50 18.92 -43 49 16.62 5.59 (1.6 ± 0.8) x 10-3 15 2.689 2.037
5 05 50 19.47 -43 49 12.08 5.53 (2.0 ± 1.0) x 10-3 16 2.498 1.988

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0550.5-4356 Swift-XRT image with known radio, optical and UV sources for 4FGL J0550.5-4356

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 4.93 ROSAT
2 1RXS J055024.5-434850 05 50 24.50 -43 48 50.40 8.12 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J055026-435658 05 50 26.21 -43 56 58.92 0.87 SUMSS
2 TGSSADR J055026.4-440227 05 50 26.40 -44 02 27.96 5.64 GMRTAS150M
SUMSS J055026-440232 05 50 26.30 -44 02 31.92 5.72 SUMSS
GLEAM J055026-440232 05 50 26.59 -44 02 31.92 5.72 GLEAMEGCAT
3 PPM 753741 05 49 44.14 -43 54 03.96 8.90 PPM
4 PPM 753754 05 50 51.89 -43 48 15.48 9.41 PPM
5 PGC 543274 05 49 39.70 -43 53 30.12 9.84 PGC2003
6 TGSSADR J055026.7-440813 05 50 26.71 -44 08 12.84 11.36 GMRTAS150M
GLEAM J055027-440815 05 50 27.50 -44 08 16.08 11.40 GLEAMEGCAT
SUMSS J055026-440818 05 50 26.59 -44 08 17.88 11.45 SUMSS
7 PGC 544279 05 49 42.91 -43 48 56.88 11.75 PGC2003
8 PGC 541694 05 51 31.39 -44 01 28.92 11.79 PGC2003
9 SUMSS J055129-440524 05 51 29.40 -44 05 24.00 13.51 SUMSS

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