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.

4FGL J0640.9-5204

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0640.9-5204 Swift-XRT detections in the field for 4FGL J0640.9-5204

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 06 41 12.37 -52 07 36.99 3.99 (2.7 ± 0.2) x 10-2 162 11.560 11.880
2 06 40 15.96 -52 01 26.90 5.05 (6.2 ± 1.1) x 10-3 38 5.543 5.528
3 06 41 10.90 -52 02 34.80 5.49 (3.0 ± 0.9) x 10-3 26 3.274 3.306

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 06 40 56.75 -52 12 53.55 5.89 (1.3 ± 0.6) x 10-3 13 2.426 2.133

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0640.9-5204 Swift-XRT image with known radio, optical and UV sources for 4FGL J0640.9-5204

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J064112.4-520737 06 41 12.43 -52 07 36.84 3.95 XMM-NEWTON
XMMSL2 J064112.4-520737 06 41 12.43 -52 07 36.84 3.95 XMM-NEWTON
Unknown 06 41 12.48 -52 07 39.00 3.98 ROSAT
TYC 8116-553-1 06 41 13.01 -52 07 36.12 3.99 ROSAT
1RXS J064113.1-520737 06 41 13.10 -52 07 36.84 4.01 ROSAT
1RXS J064113.1-520737 06 41 13.10 -52 07 37.56 4.01 ROSAT
2RXS J064113.6-520748 06 41 13.63 -52 07 49.08 4.22 ROSAT
2RXS J064113.6-520748 06 41 13.63 -52 07 49.08 4.22 ROSAT
2 1RXS J064127.4-520400 06 41 27.41 -52 04 00.12 4.48 ROSAT
3 2RXS J064136.4-520410 06 41 36.48 -52 04 10.56 5.87 ROSAT
2RXS J064136.4-520410 06 41 36.48 -52 04 10.56 5.87 ROSAT
4 1RXS J063956.8-520550 06 39 56.81 -52 05 49.92 9.57 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PPM 335386 06 40 59.74 -52 06 34.92 2.28 PPM
2 PMN J0641-5202 06 41 10.80 -52 02 44.88 2.48 PMN
GLEAM J064111-520237 06 41 10.99 -52 02 36.96 2.58 GLEAMEGCAT
QORG J064111.2-520233 06 41 11.21 -52 02 33.00 2.65 QORGCAT
ACT-S J064110-520224 06 41 10.39 -52 02 24.00 2.66 ACTSSRCAT
SUMSS J064111-520232 06 41 11.50 -52 02 31.92 2.69 SUMSS
ACT-S J064111-520223 06 41 10.99 -52 02 22.92 2.74 ACTEGSRCAT
3 QORG J064114.0-520741 06 41 13.99 -52 07 41.16 4.14 QORGCAT
4 SUMSS J064017-520303 06 40 17.81 -52 03 03.96 6.35 SUMSS
TGSSADR J064017.6-520305 06 40 17.71 -52 03 05.04 6.36 GMRTAS150M
GLEAM J064016-520304 06 40 16.61 -52 03 03.96 6.54 GLEAMEGCAT
5 SUMSS J064142-520913 06 41 43.01 -52 09 12.96 8.43 SUMSS
6 PPM 335385 06 40 56.83 -51 55 22.80 8.94 PPM
7 SUMSS J063951-520421 06 39 51.70 -52 04 22.08 10.24 SUMSS
8 SUMSS J064022-521337 06 40 22.90 -52 13 36.84 10.78 SUMSS
GLEAM J064022-521343 06 40 22.80 -52 13 42.96 10.87 GLEAMEGCAT
9 SUMSS J064204-515953 06 42 04.70 -51 59 53.88 11.13 SUMSS
QORG J064000.4-515412 06 40 00.41 -51 54 11.88 13.48 QORGCAT
10 SUMSS J064000-515411 06 40 00.10 -51 54 11.16 13.53 SUMSS
11 SUMSS J064202-515500 06 42 02.90 -51 55 00.12 13.62 SUMSS
12 GLEAM J064209-515351 06 42 09.91 -51 53 52.08 15.19 GLEAMEGCAT
SUMSS J064209-515344 06 42 09.79 -51 53 44.88 15.25 SUMSS

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