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 J2353.5+6646

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2353.5+6646 Swift-XRT detections in the field for 4FGL J2353.5+6646

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 23 53 01.20 +66 42 48.48 5.76 (5.1 ± 1.3) x 10-3 21 4.175 3.829
2 23 53 39.72 +67 00 15.83 7.27 (2.0 ± 0.5) x 10-2 13 3.362 3.742

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 23 53 21.72 +66 46 17.31 7.71 (2.7 ± 1.0) x 10-3 11 2.554 2.746
2 23 53 52.04 +66 45 05.05 6.93 (2.8 ± 1.0) x 10-3 14 2.782 2.671
3 23 54 26.02 +66 54 23.20 7.09 (2.6 ± 1.0) x 10-3 11 2.749 2.670

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2353.5+6646 Swift-XRT image with known radio, optical and UV sources for 4FGL J2353.5+6646


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 SAO 20917 23 53 21.70 +66 46 14.16 1.24 SAO
PPM 24807 23 53 21.67 +66 46 14.88 1.24 PPM
BD+65 1959 23 53 21.67 +66 46 15.60 1.24 ACRS
2 NVSS J235311+664721 23 53 11.90 +66 47 21.12 2.49 NVSS
3 NVSS J235303+664811 23 53 03.19 +66 48 11.88 3.66 NVSS
AMIGPS J235303+664250 23 53 03.60 +66 42 50.04 4.51 AMIGPS16GH
CGPS J235301+664244 23 53 01.61 +66 42 45.00 4.71 CGPSNGPCAT
[SPT2015] VLA J2353+6642 23 53 01.49 +66 42 45.00 4.71 FER2FUSRID
4 NVSS J235301+664243 23 53 01.61 +66 42 43.92 4.72 NVSS
WN 2350.5+6626 23 52 59.59 +66 42 42.84 4.87 WENSS
5 BD+66 1654 23 54 18.96 +66 49 25.68 5.47 ACRS
PPM 24823 23 54 18.98 +66 49 25.68 5.48 PPM
SAO 20928 23 54 18.96 +66 49 27.12 5.49 SAO
6 CGPS J235356+664047 23 53 56.40 +66 40 46.92 5.82 CGPSNGPCAT
CGPS J235246+665123 23 52 46.70 +66 51 23.04 7.00 CGPSNGPCAT
7 NVSS J235226+664835 23 52 26.59 +66 48 36.00 7.08 NVSS
8 NVSS J235246+665130 23 52 46.80 +66 51 29.88 7.08 NVSS
CGPS J235226+664836 23 52 26.40 +66 48 37.08 7.11 CGPSNGPCAT
[SPT2015] VLA J2352+6640 23 52 54.19 +66 40 15.96 7.11 FER2FUSRID
CGPS J235253+664016 23 52 53.90 +66 40 17.04 7.12 CGPSNGPCAT
QORG J235255.8+664008 23 52 55.80 +66 40 08.04 7.14 QORGCAT
9 NVSS J235255+664010 23 52 55.01 +66 40 10.92 7.14 NVSS
10 NVSS J235237+665158 23 52 37.61 +66 51 57.96 8.04 NVSS
TGSSADR J235416.4+663851 23 54 16.39 +66 38 51.00 8.43 GMRTAS150M
CGPS J235416+663846 23 54 16.49 +66 38 47.04 8.50 CGPSNGPCAT
WN 2351.8+6622 23 54 19.30 +66 38 54.96 8.52 WENSS
11 NVSS J235417+663843 23 54 17.30 +66 38 44.16 8.58 NVSS
12 [SPT2015] VLA J2354+6638 23 54 13.01 +66 38 20.04 8.74 FER2FUSRID
13 CGPS J235425+663855 23 54 25.39 +66 38 56.04 8.85 CGPSNGPCAT
14 CGPS J235204+664653 23 52 04.39 +66 46 53.04 8.88 CGPSNGPCAT
15 MACC H3 23 54 26.59 +66 54 19.08 9.63 HBC
NO Cep 23 54 26.78 +66 54 19.08 9.64 GCVS
CGPS J235201+665039 23 52 01.39 +66 50 39.12 10.18 CGPSNGPCAT
16 NVSS J235201+665038 23 52 01.01 +66 50 39.12 10.20 NVSS
TGSSADR J235244.0+665646 23 52 44.11 +66 56 47.04 11.68 GMRTAS150M
CGPS J235244+665650 23 52 44.59 +66 56 49.92 11.72 CGPSNGPCAT
17 NVSS J235244+665650 23 52 44.40 +66 56 51.00 11.73 NVSS
WN 2350.2+6640 23 52 43.99 +66 56 53.16 11.79 WENSS
18 NSV 14755 23 54 52.39 +66 57 34.92 13.75 GCVSNSVARS
19 V854 Cas 23 52 09.19 +66 34 49.80 14.13 GCVS
CGPS J235138+665445 23 51 38.71 +66 54 45.00 14.23 CGPSNGPCAT
20 NVSS J235138+665448 23 51 38.11 +66 54 47.88 14.31 NVSS
21 PPM 24781 23 51 35.71 +66 35 22.56 15.95 PPM
BD+65 1954 23 51 35.57 +66 35 22.20 15.96 ACRS
22 NVSS J235533+665732 23 55 33.50 +66 57 33.12 16.32 NVSS

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