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 J0642.9-6501

Field

Detected Excesses

Swift-XRT image of the field for 4FGL J0642.9-6501 Swift-XRT detections in the field for 4FGL J0642.9-6501


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 06 44 12.78 -65 00 08.51 6.41 (3.3 ± 1.1) x 10-3 13 2.938 2.995
2 06 43 33.43 -65 04 45.96 6.78 (3.3 ± 1.1) x 10-3 13 3.060 2.993
3 06 41 41.44 -65 04 11.78 7.71 (2.7 ± 1.0) x 10-3 12 2.487 2.820

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0642.9-6501 Swift-XRT image with known radio, optical and UV sources for 4FGL J0642.9-6501

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J064327.8-645509 06 43 27.79 -64 55 09.48 7.20 ROSAT
2 1RXS J064139.9-650400 06 41 39.91 -65 04 00.12 8.26 ROSAT
2RXS J064139.7-650359 06 41 39.79 -65 03 59.76 8.27 ROSAT
2RXS J064139.7-650359 06 41 39.79 -65 03 59.76 8.27 ROSAT
3 XMMSL2 J064136.6-645848 06 41 36.65 -64 58 47.64 8.61 XMM-NEWTON
XMMSL2 J064136.6-645848 06 41 36.65 -64 58 47.64 8.61 XMM-NEWTON
4 1RXS J064348.0-650944 06 43 48.00 -65 09 44.64 10.06 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J064324-645918 06 43 24.70 -64 59 17.88 3.85 SUMSS
2 CPD-64 610 06 42 12.07 -65 01 34.68 4.46 ACRS
PPM 355567 06 42 12.00 -65 01 34.32 4.46 PPM
3 GLEAM J064230-650558 06 42 30.60 -65 05 57.84 5.18 GLEAMEGCAT
SUMSS J064229-650558 06 42 29.81 -65 05 58.92 5.24 SUMSS
4 GLEAM J064321-645650 06 43 21.70 -64 56 49.92 5.43 GLEAMEGCAT
SUMSS J064321-645638 06 43 21.41 -64 56 38.04 5.58 SUMSS
5 PGC 317872 06 43 20.50 -64 55 31.08 6.53 PGC2003
6 PPM 355585 06 43 30.60 -65 07 04.80 6.83 PPM
7 NSV 17177 06 43 26.90 -64 54 39.96 7.59 GCVSNSVARS
8 PPM 776380 06 42 19.06 -65 08 03.84 7.61 PPM
9 SUMSS J064344-650704 06 43 44.21 -65 07 04.08 7.72 SUMSS
PGC 316128 06 43 45.10 -65 07 00.12 7.73 PGC2003
QORG J064345.2-650700 06 43 45.19 -65 07 00.12 7.74 QORGCAT
10 PGC 179775 06 44 00.70 -64 56 34.08 8.54 PGC2003
11 SUMSS J064318-645311 06 43 18.31 -64 53 12.12 8.61 SUMSS
12 PPM 776382 06 42 21.70 -64 52 01.56 10.01 PPM
13 PPM 776394 06 43 53.88 -65 09 32.76 10.27 PPM
14 GLEAM J064206-645140 06 42 07.01 -64 51 41.04 10.96 GLEAMEGCAT
SUMSS J064206-645137 06 42 06.19 -64 51 37.08 11.05 SUMSS
15 PPM 776374 06 41 37.20 -64 53 10.68 11.60 PPM
16 SUMSS J064444-650222 06 44 44.81 -65 02 22.92 11.70 SUMSS
17 GLEAM J064433-645544 06 44 33.60 -64 55 44.04 11.95 GLEAMEGCAT
SUMSS J064434-645546 06 44 34.30 -64 55 45.84 11.99 SUMSS
QORG J064433.8-645535 06 44 33.79 -64 55 35.04 12.04 QORGCAT
PGC 315200 06 41 53.59 -65 13 14.88 13.44 PGC2003
18 SUMSS J064149-651303 06 41 49.70 -65 13 03.00 13.47 SUMSS
19 PGC 318604 06 44 44.30 -64 51 03.96 15.59 PGC2003

Penn State University Goddard Space Flight Center Swift