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 J1817.7+2530

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1817.7+2530 Swift-XRT detections in the field for 3FGL J1817.7+2530


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 18 18 30.70 +25 37 02.50 6.65 (3.2 ± 1.1) x 10-3 11 2.781 2.920
2 18 18 44.00 +25 25 19.96 8.27 (2.8 ± 1.1) x 10-3 7 2.409 2.484

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1817.7+2530 Swift-XRT image with known radio, optical and UV sources for 3FGL J1817.7+2530


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 NVSS J181734+252710 18 17 34.90 +25 27 10.08 3.74 NVSS
2 HD 335852 18 17 45.46 +25 35 08.16 4.87 HDEC
3 HD 335861 18 17 57.12 +25 25 07.68 5.92 HDEC
4 PGC 1735219 18 17 45.50 +25 24 06.84 6.17 PGC2003
5 WDS J18180+2525 18 18 00.00 +25 25 00.12 6.37 WDS
6 NVSS J181713+252955 18 17 13.80 +25 29 54.96 6.87 NVSS
TGSSADR J181713.7+252958 18 17 13.80 +25 29 57.84 6.87 GMRTAS150M
7 NVSS J181805+253548 18 18 06.00 +25 35 48.12 7.39 NVSS
8 HD 335853 18 17 17.40 +25 37 00.48 9.05 HDEC
9 NVSS J181715+252331 18 17 15.79 +25 23 30.84 9.31 NVSS
10 HD 335854 18 17 02.38 +25 32 47.04 9.76 HDEC
11 NVSS J181704+253708 18 17 04.10 +25 37 08.04 11.35 NVSS
12 NVSS J181824+252324 18 18 24.91 +25 23 25.08 11.47 NVSS
13 HIP 89696 18 18 19.44 +25 19 48.36 13.15 HIPPARCOS
HD 168362 18 18 19.49 +25 19 48.00 13.16 HIC
PPM 107046 18 18 19.49 +25 19 48.00 13.16 PPM
BD+25 3481 18 18 19.54 +25 19 48.36 13.17 ACRS
SAO 85909 18 18 19.51 +25 19 47.64 13.17 SAO
14 HD 335863 18 16 55.58 +25 21 04.68 14.32 HDEC

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