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 J1857.9+7319

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1857.9+7319 Swift-XRT detections in the field for 3FGL J1857.9+7319

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 18 57 56.32 +73 26 21.02 5.53 (7 ± 2) x 10-3 26 4.694 4.613

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 18 57 26.34 +73 22 06.95 7.09 (2.7 ± 1.0) x 10-3 12 2.687 2.582

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1857.9+7319 Swift-XRT image with known radio, optical and UV sources for 3FGL J1857.9+7319

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J185859.3+731647 18 58 59.38 +73 16 48.00 5.24 ROSAT
2RXS J185859.3+731647 18 58 59.38 +73 16 48.00 5.24 ROSAT
1RXS J185859.5+731648 18 58 59.50 +73 16 48.00 5.25 ROSAT
2 1RXS J185755.9+732632 18 57 55.92 +73 26 32.64 6.95 ROSAT
2RXS J185755.7+732632 18 57 55.78 +73 26 32.64 6.95 ROSAT
2RXS J185755.7+732632 18 57 55.78 +73 26 32.64 6.95 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J185819+731712 18 58 19.90 +73 17 12.84 2.87 NVSS
WN 1859.3+7312 18 58 20.50 +73 17 08.88 2.94 WENSS
TGSSADR J185742.1+732258 18 57 42.19 +73 22 58.08 3.55 GMRTAS150M
2 NVSS J185740+732301 18 57 40.90 +73 23 00.96 3.63 NVSS
WN 1858.7+7318 18 57 40.90 +73 23 03.84 3.68 WENSS
3 NVSS J185646+731928 18 56 46.80 +73 19 27.84 5.09 NVSS
4 NVSS J185856+732254 18 58 56.71 +73 22 54.12 5.37 NVSS
5 NVSS J185911+732153 18 59 11.81 +73 21 52.92 5.78 NVSS
6 NVSS J185906+731620 18 59 06.41 +73 16 21.00 5.91 NVSS
7 NVSS J185644+732454 18 56 44.40 +73 24 54.00 7.46 NVSS
WN 1900.9+7308B 18 59 47.71 +73 12 09.00 10.87 WENSS
8 8C 1900+731 18 59 52.51 +73 12 27.00 10.93 RRS8C38MHZ
9 NVSS J185947+731202 18 59 47.40 +73 12 02.16 10.94 NVSS
GB6 J1859+7312 18 59 56.40 +73 12 34.92 11.05 GB6
WN 1900.9+7308A 18 59 36.70 +73 11 07.08 11.08 WENSS
WN 1900.9+7308 19 00 00.29 +73 12 38.16 11.23 WENSS
10 NVSS J185939+731059 18 59 39.60 +73 10 59.88 11.30 NVSS
WN 1900.9+7308C 19 00 04.61 +73 12 51.84 11.35 WENSS
11 NVSS J190004+731249 19 00 04.90 +73 12 48.96 11.39 NVSS
VLSSr J190004.9+731241 19 00 04.90 +73 12 42.12 11.46 VLSSR
TGSSADR J190006.0+731243 19 00 06.00 +73 12 43.92 11.51 GMRTAS150M
12 NVSS J185553+730924 18 55 53.30 +73 09 24.12 13.58 NVSS
WN 1856.8+7305 18 55 52.39 +73 09 27.00 13.58 WENSS

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