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 J1842.2+2742

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1842.2+2742 Swift-XRT detections in the field for 3FGL J1842.2+2742


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 42 28.83 +27 33 40.68 5.89 (2.8 ± 1.1) x 10-3 13 2.746 2.450
2 18 42 42.48 +27 32 46.30 7.27 (2.1 ± 1.0) x 10-3 7 2.307 2.143

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1842.2+2742 Swift-XRT image with known radio, optical and UV sources for 3FGL J1842.2+2742


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 [SPT2015] VLA J1842+2742 18 42 23.81 +27 42 50.04 2.03 FER2FUSRID
2 PCCS2 143 G057.10+14.16 18 41 54.10 +27 42 27.00 4.65 PCCS143GHZ
3 NVSS J184210+274700 18 42 10.70 +27 46 59.88 4.95 NVSS
4 NVSS J184227+273739 18 42 27.60 +27 37 40.08 5.28 NVSS
5 NVSS J184244+274131 18 42 44.90 +27 41 31.92 6.63 NVSS
6 NVSS J184151+274721 18 41 51.79 +27 47 21.12 7.32 NVSS
7 NVSS J184244+273842 18 42 44.71 +27 38 42.00 7.39 NVSS
8 NVSS J184144+274559 18 41 44.59 +27 45 59.04 7.76 NVSS
TGSSADR J184144.0+274600 18 41 44.11 +27 46 00.84 7.88 GMRTAS150M
9 NVSS J184140+274450 18 41 40.61 +27 44 51.00 8.10 NVSS
10 NVSS J184253+273938 18 42 53.59 +27 39 38.16 8.88 NVSS
TGSSADR J184255.2+274302 18 42 55.30 +27 43 01.92 8.93 GMRTAS150M
11 NVSS J184255+274304 18 42 55.30 +27 43 04.08 8.94 NVSS
TGSSADR J184253.8+273937 18 42 53.90 +27 39 38.16 8.94 GMRTAS150M
TGSSADR J184217.4+273058 18 42 17.40 +27 30 57.96 11.20 GMRTAS150M
12 NVSS J184217+273057 18 42 17.40 +27 30 57.96 11.20 NVSS
13 NVSS J184132+274823 18 41 33.00 +27 48 24.12 11.22 NVSS
14 NVSS J184247+275202 18 42 47.11 +27 52 03.00 12.16 NVSS
GB6 J1842+2731 18 42 49.90 +27 31 58.08 12.77 GB6
15 NVSS J184249+273146 18 42 49.99 +27 31 46.92 12.94 NVSS
TGSSADR J184249.9+273146 18 42 49.99 +27 31 46.92 12.94 GMRTAS150M
TGSSADR J184122.4+273501 18 41 22.39 +27 35 00.96 13.68 GMRTAS150M
16 NVSS J184122+273459 18 41 22.51 +27 34 59.16 13.68 NVSS
TGSSADR J184253.3+275305 18 42 53.30 +27 53 06.00 13.82 GMRTAS150M
17 NVSS J184253+275307 18 42 53.50 +27 53 07.08 13.86 NVSS
18 NVSS J184123+273304 18 41 23.81 +27 33 03.96 14.56 NVSS
19 NVSS J184131+275332 18 41 31.20 +27 53 31.92 14.96 NVSS

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