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 J0427.9-6704

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J0427.9-6704 Swift-XRT detections in the field for 3FGL J0427.9-6704

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 04 29 47.30 -67 03 21.53 3.65 (4.0 ± 0.2) x 10-2 533 22.880 21.550
2 04 27 49.43 -67 04 37.15 3.97 (9.7 ± 0.9) x 10-3 167 10.290 10.390
3 04 29 27.04 -66 56 34.75 4.41 (1.7 ± 0.4) x 10-3 42 4.216 3.894
4 04 28 46.88 -66 57 59.23 4.32 (1.6 ± 0.4) x 10-3 57 4.128 3.835
5 04 26 35.57 -66 57 04.07 4.47 (1.7 ± 0.5) x 10-3 37 4.145 3.671

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 04 28 46.88 -66 57 59.23 4.32 (1.5 ± 0.4) x 10-3 57 3.884 3.501
2 04 29 32.28 -66 59 51.35 4.59 (10 ± 3) x 10-4 31 3.255 2.944
3 04 28 05.82 -66 53 58.91 4.33 (1.1 ± 0.4) x 10-3 41 3.372 2.943
4 04 28 52.90 -67 10 46.08 4.54 (10 ± 4) x 10-4 31 2.957 2.727
5 04 28 34.85 -66 58 23.07 4.47 (8 ± 3) x 10-4 31 2.722 2.455
6 04 28 17.68 -66 57 11.44 4.66 (7 ± 3) x 10-4 27 2.578 2.233
7 04 26 49.35 -67 00 12.19 4.45 (7 ± 3) x 10-4 35 2.538 2.112

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0427.9-6704 Swift-XRT image with known radio, optical and UV sources for 3FGL J0427.9-6704

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 IGR J04288-6702 04 28 46.61 -67 04 30.00 4.96 INTEGRAL
2 null 04 29 47.40 -67 03 20.52 10.96 ROSAT
6dFGS J0429474-670320 04 29 47.40 -67 03 20.52 10.96 ROSAT
1RXS J042948.9-670314 04 29 47.40 -67 03 20.16 10.96 ROSAT
1RXS J042948.9-670314 04 29 48.91 -67 03 14.40 11.12 ROSAT
1RXS J042948.9-670314 04 29 48.91 -67 03 14.04 11.12 ROSAT
2RXS J042948.9-670314 04 29 48.96 -67 03 14.76 11.12 ROSAT
3 1RXS J042744.3-665314 04 27 44.30 -66 53 14.64 11.47 ROSAT
4 2RXS J042926.3-665623 04 29 26.35 -66 56 23.28 12.12 ROSAT
1RXS J042926.3-665622 04 29 26.30 -66 56 22.56 12.12 ROSAT
5 2RXS J042859.2-665303 04 28 59.28 -66 53 03.12 13.17 ROSAT
6 2RXS J042953.8-665611 04 29 53.88 -66 56 12.12 14.31 ROSAT
7 2RXS J042945.9-665434 04 29 45.98 -66 54 34.92 14.76 ROSAT
8 2RXS J042554.6-665426 04 25 54.67 -66 54 26.64 15.63 ROSAT
2RXS J042554.6-665426 04 25 54.67 -66 54 26.64 15.63 ROSAT
1RXS J042554.5-665424 04 25 54.50 -66 54 24.12 15.67 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [SPT2015] ATCA J0427-6703 04 27 16.61 -67 03 27.00 4.00 FER2FUSRID
[PME2013] J0427-6703 04 27 16.51 -67 03 27.00 4.01 AT2FGLUS
2 SUMSS J042852-670312 04 28 52.51 -67 03 11.88 5.72 SUMSS
3 SUMSS J042826-671016 04 28 26.40 -67 10 17.04 6.36 SUMSS
4 SUMSS J042736-665726 04 27 36.31 -66 57 25.92 7.47 SUMSS
5 [PME2013] J0426-6700 04 26 51.70 -67 00 25.92 7.54 AT2FGLUS
GLEAM J042653-670013 04 26 53.11 -67 00 14.04 7.54 GLEAMEGCAT
SUMSS J042652-670019 04 26 52.20 -67 00 19.08 7.57 SUMSS
[SPT2015] ATCA J0426-6700 04 26 51.50 -67 00 24.12 7.58 FER2FUSRID
GLEAM J042732-665723 04 27 32.81 -66 57 23.04 7.61 GLEAMEGCAT
6 SUMSS J042848-665806 04 28 48.70 -66 58 05.88 8.35 SUMSS
GLEAM J042849-665805 04 28 49.10 -66 58 05.88 8.38 GLEAMEGCAT
7 SUMSS J042933-670448 04 29 33.60 -67 04 48.00 9.53 SUMSS
8 SUMSS J042622-665513 04 26 22.99 -66 55 14.16 13.08 SUMSS
9 SUMSS J042942-665540 04 29 42.70 -66 55 40.08 13.79 SUMSS

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