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 J0225.5-5530

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0225.5-5530 Swift-XRT detections in the field for 4FGL J0225.5-5530


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 02 25 00.43 -55 35 19.80 6.21 (3.1 ± 1.3) x 10-3 14 2.519 2.467

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0225.5-5530 Swift-XRT image with known radio, optical and UV sources for 4FGL J0225.5-5530

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 SACSTP J022626.8-553330 02 26 26.83 -55 33 29.88 8.43 SWIFT
2 SACSSP J022631.6-553226 02 26 31.56 -55 32 26.16 8.73 SWIFT
SACSTP J022631.9-553224 02 26 31.87 -55 32 23.64 8.76 SWIFT
3 XMMSL2 J022530.9-553937 02 25 30.98 -55 39 36.72 9.32 XMM-NEWTON
XMMSL2 J022530.9-553937 02 25 30.98 -55 39 36.72 9.32 XMM-NEWTON
4 SACSTP J022621.8-553627 02 26 21.79 -55 36 26.64 9.38 SWIFT
5 SACSTP J022653.6-552920 02 26 53.62 -55 29 20.04 11.63 SWIFT
6 SACSTP J022653.8-551839 02 26 53.76 -55 18 39.24 16.46 SWIFT
SACSSP J022654.1-551840 02 26 54.05 -55 18 39.96 16.48 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J022532-552836 02 25 32.71 -55 28 36.84 1.68 SUMSS
2 PGC 408420 02 25 09.91 -55 32 03.12 3.56 PGC2003
3 PPM 331876 02 25 58.37 -55 26 54.96 5.06 PPM
4 PGC 409176 02 26 30.50 -55 27 41.04 8.72 PGC2003
5 SUMSS J022636-553431 02 26 36.79 -55 34 31.08 10.13 SUMSS
QORG J022636.7-553438 02 26 36.70 -55 34 37.92 10.16 QORGCAT
6 PPM 331864 02 25 05.50 -55 40 00.48 10.40 PPM
7 PGC 410448 02 25 19.01 -55 19 45.12 10.70 PGC2003
8 GLEAM J022625-553851 02 26 25.01 -55 38 51.00 11.40 GLEAMEGCAT
SUMSS J022625-553853 02 26 25.80 -55 38 53.88 11.51 SUMSS
9 PGC 408361 02 26 52.39 -55 32 25.08 11.61 PGC2003
10 PGC 409587 02 26 52.70 -55 25 09.84 12.57 PGC2003
11 PGC 407318 02 24 23.30 -55 38 48.12 12.88 PGC2003

Penn State University Goddard Space Flight Center Swift