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 J1549.9-3044

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1549.9-3044 Swift-XRT detections in the field for 3FGL J1549.9-3044

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 49 46.41 -30 45 02.37 4.15 (3.5 ± 0.4) x 10-2 116 9.814 9.843
2 15 50 05.85 -30 53 56.79 5.64 (6 ± 2) x 10-3 21 4.185 4.090

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1549.9-3044 Swift-XRT image with known radio, optical and UV sources for 3FGL J1549.9-3044

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J154946.2-304459 15 49 46.37 -30 44 58.56 1.67 XMM-NEWTON
XMMSL2 J154946.2-304459 15 49 46.37 -30 44 58.56 1.67 XMM-NEWTON
1WGA J1549.7-3044 15 49 45.19 -30 45 13.32 1.96 ROSAT
2RXP J154944.3-304501 15 49 44.26 -30 45 01.08 2.13 ROSAT
2 2RXP J155005.1-305355 15 50 05.50 -30 53 54.96 9.48 ROSAT
1WGA J1550.0-3053 15 50 04.70 -30 53 56.76 9.50 ROSAT
3 2RXS J154906.3-304519 15 49 06.36 -30 45 19.80 10.27 ROSAT
2RXS J154906.3-304519 15 49 06.36 -30 45 19.80 10.27 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J154946-304501 15 49 46.61 -30 45 01.08 1.63 NVSS
SUMSS J154946-304502 15 49 46.30 -30 45 02.88 1.70 SUMSS
2 NVSS J154919-304945 15 49 19.61 -30 49 45.84 8.95 NVSS
TGSSADR J154919.3-304943 15 49 19.30 -30 49 42.96 8.97 GMRTAS150M
SUMSS J154919-304947 15 49 19.30 -30 49 46.92 9.02 SUMSS
GLEAM J154918-304936 15 49 18.70 -30 49 36.84 9.03 GLEAMEGCAT
3 NVSS J154909-304049 15 49 09.60 -30 40 49.08 10.32 NVSS
4 NVSS J154916-303440 15 49 16.90 -30 34 40.08 12.85 NVSS
SUMSS J154916-303415 15 49 16.70 -30 34 14.88 13.20 SUMSS
5 NVSS J155033-305522 15 50 33.50 -30 55 23.16 13.60 NVSS

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