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 J1538.0-4638

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1538.0-4638 Swift-XRT detections in the field for 4FGL J1538.0-4638


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 15 38 48.44 -46 43 23.20 6.21 (2.6 ± 1.3) x 10-3 13 2.299 2.055

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1538.0-4638 Swift-XRT image with known radio, optical and UV sources for 4FGL J1538.0-4638

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J153734.7-464930 15 37 34.75 -46 49 30.72 12.20 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 MGPS J153747-464023 15 37 47.40 -46 40 23.88 3.66 MGPS2
2 MGPS J153811-463032 15 38 11.69 -46 30 32.04 8.06 MGPS2
3 MGPS J153849-464204 15 38 49.49 -46 42 05.04 8.29 MGPS2
4 PPM 761321 15 38 18.14 -46 46 37.56 8.37 PPM
5 MGPS J153820-463028 15 38 20.40 -46 30 29.16 8.43 MGPS2
6 MGPS J153755-462926 15 37 55.20 -46 29 26.88 9.27 MGPS2
7 SAO 225980 15 37 07.82 -46 40 50.52 10.21 SAO
PPM 320796 15 37 07.80 -46 40 50.52 10.22 PPM
8 MGPS J153906-464527 15 39 06.00 -46 45 28.08 12.43 MGPS2
9 PPM 761305 15 37 34.42 -46 49 45.12 12.44 PPM
TGSSADR J153906.0-464529 15 39 06.10 -46 45 29.88 12.46 GMRTAS150M
10 PPM 761298 15 36 58.87 -46 28 45.48 15.10 PPM

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