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 J1816.4-6405

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J1816.4-6405 Swift-XRT detections in the field for 4FGL J1816.4-6405

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 14 35.93 -64 12 48.63 5.82 (4.0 ± 1.0) x 10-3 19 3.911 3.961
2 18 15 34.95 -64 12 02.12 5.53 (3.2 ± 1.0) x 10-3 20 3.434 3.109

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J1816.4-6405 Swift-XRT image with known radio, optical and UV sources for 4FGL J1816.4-6405

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMMs J181742.4-635344 18 17 42.46 -63 53 44.16 14.02 XMM-NEWTON
2 4XMMs J181735.9-635314 18 17 35.95 -63 53 14.64 14.03 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 SUMSS J181612-640810 18 16 12.41 -64 08 09.96 3.49 SUMSS
2 PGC 3082715 18 16 15.41 -64 15 34.92 10.57 PGC2003
3 157- 96 18 14 45.22 -64 07 06.24 11.36 NLTT
4 SUMSS J181529-641503 18 15 29.81 -64 15 02.88 11.78 SUMSS
GLEAM J181532-641516 18 15 32.30 -64 15 16.92 11.83 GLEAMEGCAT
5 SUMSS J181439-640744 18 14 39.00 -64 07 44.04 12.14 SUMSS
6 PMN J1814-6412 18 14 38.71 -64 12 10.08 13.82 PMN

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