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 J0138.5-4612

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0138.5-4612 Swift-XRT detections in the field for 3FGL J0138.5-4612

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 01 38 33.70 -46 14 16.44 4.37 (1.7 ± 0.2) x 10-2 80 8.258 8.144
2 01 38 30.54 -46 10 27.32 5.31 (6.2 ± 1.3) x 10-3 36 4.629 4.668
3 01 38 03.48 -46 18 27.00 5.70 (3.9 ± 1.0) x 10-3 20 3.747 3.783
4 01 38 03.54 -46 05 03.11 5.64 (3.6 ± 1.0) x 10-3 16 3.708 3.439

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 01 38 17.58 -46 20 22.38 5.96 (2.3 ± 0.9) x 10-3 12 2.699 2.622
2 01 38 47.10 -46 19 18.79 5.53 (2.1 ± 0.8) x 10-3 20 3.006 2.546
3 01 37 49.85 -46 10 59.21 6.21 (1.8 ± 0.7) x 10-3 12 2.370 2.453

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0138.5-4612 Swift-XRT image with known radio, optical and UV sources for 3FGL J0138.5-4612

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
2RXS J013833.2-461414 01 38 33.24 -46 14 15.00 2.06 ROSAT
2RXS J013833.2-461414 01 38 33.24 -46 14 15.00 2.06 ROSAT
1RXS J013833.0-461414 01 38 33.00 -46 14 14.64 2.07 ROSAT
1 XMMSL2 J013833.8-461419 01 38 33.82 -46 14 18.96 2.11 XMM-NEWTON
XMMSL2 J013833.8-461419 01 38 33.82 -46 14 18.96 2.11 XMM-NEWTON
2 1RXS J013831.7-461946 01 38 31.70 -46 19 45.84 7.57 ROSAT
2RXS J013831.7-461947 01 38 31.75 -46 19 47.28 7.59 ROSAT
2RXS J013831.7-461947 01 38 31.75 -46 19 47.28 7.59 ROSAT
3 2RXS J013834.8-460117 01 38 34.85 -46 01 17.04 10.95 ROSAT
2RXS J013834.8-460117 01 38 34.85 -46 01 17.04 10.95 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PMN J0138-4614 01 38 35.81 -46 14 00.96 1.78 PMN
SUMSS J013834-461415 01 38 34.01 -46 14 16.08 2.05 SUMSS
TGSSADR J013833.8-461416 01 38 33.79 -46 14 17.16 2.08 GMRTAS150M
2 GLEAM J013839-461514 01 38 39.19 -46 15 15.12 3.07 GLEAMEGCAT
3 MWACS J0138.2-4620 01 38 17.90 -46 20 04.92 8.45 MWACS
SUMSS J013818-462018 01 38 18.10 -46 20 17.88 8.63 SUMSS
TGSSADR J013818.0-462019 01 38 18.10 -46 20 18.96 8.65 GMRTAS150M
GLEAM J013818-462022 01 38 18.10 -46 20 21.84 8.70 GLEAMEGCAT
4 GLEAM J013731-460949 01 37 31.30 -46 09 50.04 11.42 GLEAMEGCAT
SUMSS J013731-460950 01 37 31.20 -46 09 51.12 11.45 SUMSS
5 MWACS J0139.3-4620 01 39 22.80 -46 20 29.04 11.57 MWACS
TGSSADR J013922.9-462040 01 39 22.90 -46 20 39.84 11.72 GMRTAS150M
SUMSS J013922-462039 01 39 22.90 -46 20 39.84 11.72 SUMSS
GLEAM J013923-462041 01 39 22.99 -46 20 42.00 11.75 GLEAMEGCAT

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