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 J0439.6-0538

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J0439.6-0538 Swift-XRT detections in the field for 1FGL J0439.6-0538


No detected excesses found.

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 40 15.82 -05 37 08.74 7.09 (2.2 ± 0.9) x 10-3 10 2.710 2.564
2 04 38 59.87 -05 38 14.41 5.76 (1.6 ± 0.9) x 10-3 8 2.274 1.925

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J0439.6-0538 Swift-XRT image with known radio, optical and UV sources for 1FGL J0439.6-0538

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 3XMM J043944.8-053600 04 39 44.86 -05 35 60.00 3.30 XMM-NEWTON
2 3XMM J043949.4-053518 04 39 49.42 -05 35 18.60 4.51 XMM-NEWTON
3 3XMM J043956.3-053437 04 39 56.38 -05 34 37.92 6.19 XMM-NEWTON
4 3XMM J043947.1-053228 04 39 47.18 -05 32 27.96 6.77 XMM-NEWTON
5 3XMM J043939.5-053130 04 39 39.55 -05 31 31.08 7.35 XMM-NEWTON
6 3XMM J044003.7-053354 04 40 03.77 -05 33 54.72 8.05 XMM-NEWTON
7 3XMM J044015.7-053716 04 40 15.74 -05 37 15.96 9.47 XMM-NEWTON
8 3XMM J043952.5-053001 04 39 52.54 -05 30 01.44 9.53 XMM-NEWTON
9 3XMM J043956.9-052735 04 39 56.90 -05 27 35.28 12.19 XMM-NEWTON
2RXS J044022.8-053020 04 40 22.80 -05 30 20.52 13.99 ROSAT
2RXS J044022.8-053020 04 40 22.80 -05 30 20.52 13.99 ROSAT
1RXS J044022.8-053020 04 40 22.80 -05 30 20.16 13.99 ROSAT
1RXS J044022.8-053020 04 40 22.80 -05 30 20.16 13.99 ROSAT
6dFGS J0440229-053011 04 40 22.87 -05 30 10.44 14.10 ROSAT
10 3XMM J044023.6-053005 04 40 23.62 -05 30 05.76 14.30 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
TGSSADR J043941.9-053758 04 39 42.00 -05 37 59.16 1.29 GMRTAS150M
GLEAM J043942-053741 04 39 42.31 -05 37 41.88 1.54 GLEAMEGCAT
1 NVSS J043942-053742 04 39 42.50 -05 37 41.88 1.57 NVSS
TGSSADR J043942.8-053730 04 39 42.91 -05 37 31.08 1.78 GMRTAS150M
TGSSADR J043953.7-053555 04 39 53.81 -05 35 54.96 4.87 GMRTAS150M
2 NVSS J043953-053554 04 39 53.90 -05 35 53.88 4.89 NVSS
GLEAM J043954-053547 04 39 54.00 -05 35 48.12 4.98 GLEAMEGCAT
3 NVSS J043922-053437 04 39 22.39 -05 34 36.84 5.77 NVSS
4 NVSS J043916-053302 04 39 16.99 -05 33 02.88 7.85 NVSS
5 NVSS J044012-053252 04 40 12.19 -05 32 52.08 10.36 NVSS
GLEAM J043919-054859 04 39 19.80 -05 49 00.12 11.12 GLEAMEGCAT
6 NVSS J043919-054901 04 39 19.90 -05 49 00.84 11.14 NVSS
TGSSADR J043919.8-054902 04 39 19.80 -05 49 03.00 11.16 GMRTAS150M
7 NVSS J044007-052907 04 40 07.90 -05 29 08.16 12.22 NVSS
TGSSADR J044000.3-052708 04 40 00.41 -05 27 07.92 12.95 GMRTAS150M
8 NVSS J044000-052702 04 40 00.31 -05 27 02.88 13.03 NVSS
9 NVSS J043857-052815 04 38 57.60 -05 28 14.88 14.65 NVSS
TGSSADR J043857.5-052814 04 38 57.60 -05 28 14.88 14.66 GMRTAS150M
GLEAM J043857-052813 04 38 57.31 -05 28 13.08 14.72 GLEAMEGCAT

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