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 J1533.8-5231

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J1533.8-5231 Swift-XRT detections in the field for 3FGL J1533.8-5231

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 15 33 09.96 -52 23 19.40 4.83 (1.1 ± 0.2) x 10-2 49 6.713 6.293
2 15 33 28.52 -52 39 15.17 5.40 (6.4 ± 1.4) x 10-3 27 4.794 4.480
3 15 33 50.76 -52 28 10.92 5.96 (4.4 ± 1.2) x 10-3 19 3.753 3.636
4 15 34 08.36 -52 27 36.65 6.04 (4.0 ± 1.2) x 10-3 16 3.294 3.264

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 33 40.34 -52 38 43.52 6.52 (3.3 ± 1.1) x 10-3 13 2.970 2.953

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1533.8-5231 Swift-XRT image with known radio, optical and UV sources for 3FGL J1533.8-5231

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J153308.9-523557 15 33 08.90 -52 35 57.12 7.85 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 TGSSADR J153355.3-523257 15 33 55.39 -52 32 57.84 1.05 GMRTAS150M
2 MGPS J153325-523815 15 33 25.01 -52 38 15.00 7.63 MGPS2
3 MGPS J153505-523616 15 35 05.71 -52 36 16.92 11.81 MGPS2

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