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.

2FGL J0438.0-7331

Field

Detected Excesses

Swift-XRT image of the field for 2FGL J0438.0-7331 Swift-XRT detections in the field for 2FGL J0438.0-7331

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 04 38 36.88 -73 29 20.23 5.31 (9 ± 2) x 10-3 33 5.370 5.146

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 2FGL J0438.0-7331 Swift-XRT image with known radio, optical and UV sources for 2FGL J0438.0-7331

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J043840.9-733011 04 38 40.90 -73 30 11.52 3.02 ROSAT
2 1RXS J043817.4-732027 04 38 17.40 -73 20 27.60 11.24 ROSAT
3 1RXS J043939.8-734046 04 39 39.79 -73 40 45.84 11.36 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [SPT2015] ATCA J0438-7329 04 38 36.89 -73 29 24.00 3.27 FER2FUSRID
[PME2013] J0438-7329 04 38 36.89 -73 29 24.00 3.27 AT2FGLUS
SUMSS J043836-732921 04 38 37.01 -73 29 21.12 3.30 SUMSS
2 [SPT2015] ATCA J0436-7329 04 36 55.20 -73 29 17.88 5.40 FER2FUSRID
[PME2013] J0436-7329 04 36 55.10 -73 29 17.16 5.42 AT2FGLUS
SUMSS J043654-732913 04 36 54.79 -73 29 13.92 5.46 SUMSS
3 SUMSS J043900-732648 04 39 00.50 -73 26 48.12 6.31 SUMSS

Penn State University Goddard Space Flight Center Swift