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 J1538.2-6201

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J1538.2-6201 Swift-XRT detections in the field for 4FGL J1538.2-6201

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 39 37.92 -62 01 09.26 5.02 (8 ± 2) x 10-3 34 5.407 5.408

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 37 00.86 -62 08 02.98 6.21 (4 ± 2) x 10-3 9 2.362 2.398

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1538.2-6201 Swift-XRT image with known radio, optical and UV sources for 4FGL J1538.2-6201


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SAO 253234 15 37 16.75 -62 00 35.64 6.71 SAO
CD-61 4927 15 37 16.68 -62 00 35.28 6.72 ACRS
PPM 361553 15 37 16.68 -62 00 34.92 6.72 PPM
2 MGPS J153738-615459 15 37 38.11 -61 54 59.04 7.99 MGPS2
3 CD-61 4945 15 39 02.23 -62 08 34.08 8.86 ACRS
PPM 361564 15 39 02.28 -62 08 34.08 8.87 PPM
SAO 253241 15 39 02.45 -62 08 34.80 8.89 SAO
4 MGPS J153808-615232 15 38 08.71 -61 52 32.16 9.31 MGPS2
5 PPM 780594 15 39 52.70 -62 06 54.00 12.73 PPM

Penn State University Goddard Space Flight Center Swift