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.

1FGL J0001.9-4158

Field

Detected Excesses
Swift-XRT image of the field for 1FGL J0001.9-4158 Swift-XRT detections in the field for 1FGL J0001.9-4158

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 00 01 32.85 -41 55 22.88 3.72 (7.3 ± 0.4) x 10-2 387 18.650 18.890
2 00 01 07.27 -41 53 10.92 5.44 (3.2 ± 0.9) x 10-3 19 3.648 3.499

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 00 01 52.34 -42 05 13.60 6.41 (1.9 ± 0.7) x 10-3 13 2.783 2.790
2 00 01 28.29 -42 02 59.66 6.41 (1.7 ± 0.7) x 10-3 12 2.657 2.599
3 00 02 11.11 -41 55 20.36 6.52 (1.6 ± 0.7) x 10-3 12 2.450 2.282
4 00 02 34.46 -42 04 08.84 6.65 (1.2 ± 0.6) x 10-3 13 2.530 2.084

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0001.9-4158 Swift-XRT image with known radio, optical and UV sources for 1FGL J0001.9-4158

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J000135.5-415519 00 01 35.52 -41 55 19.20 5.20 ROSAT
2RXS J000135.5-415519 00 01 35.52 -41 55 19.20 5.20 ROSAT
1RXS J000135.5-415519 00 01 35.50 -41 55 18.84 5.20 ROSAT
2 SWIFT J000132.7-415521 00 01 32.74 -41 55 21.72 5.56 SWIFT
3 SWIFT J000128.1-420257 00 01 28.10 -42 02 57.12 6.55 SWIFT
4 SWIFT J000107.5-415307 00 01 07.51 -41 53 07.44 10.68 SWIFT
5 XMMSL2 J000237.9-415043 00 02 37.99 -41 50 42.72 11.34 XMM-NEWTON
XMMSL2 J000237.9-415043 00 02 37.99 -41 50 42.72 11.34 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J000133-415524 00 01 33.00 -41 55 23.88 5.48 SUMSS

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