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 J1740.8-6755

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1740.8-6755 Swift-XRT detections in the field for 3FGL J1740.8-6755

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 17 40 59.30 -68 01 30.63 6.04 (4.0 ± 1.3) x 10-3 16 3.178 3.053

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 17 40 25.68 -68 04 21.67 5.76 (2.3 ± 1.0) x 10-3 14 2.519 2.329
2 17 42 28.00 -67 49 00.09 6.65 (1.9 ± 0.9) x 10-3 8 2.261 2.185

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1740.8-6755 Swift-XRT image with known radio, optical and UV sources for 3FGL J1740.8-6755


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 [PME2013] J1741-6754 17 41 26.11 -67 54 06.84 3.61 AT2FGLUS
[SPT2015] ATCA J1741-6754 17 41 26.11 -67 54 06.84 3.61 FER2FUSRID
2 SUMSS J173911-675444 17 39 11.21 -67 54 43.92 9.48 SUMSS
3 SUMSS J173901-675542 17 39 01.99 -67 55 42.96 10.29 SUMSS
4 SUMSS J173931-680621 17 39 31.01 -68 06 21.96 13.08 SUMSS

Penn State University Goddard Space Flight Center Swift