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 J1223.3+0818

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J1223.3+0818 Swift-XRT detections in the field for 3FGL J1223.3+0818

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 12 23 27.27 +08 20 32.06 5.76 (8 ± 2) x 10-3 25 4.094 3.917

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 12 23 10.57 +08 08 46.27 6.52 (3.5 ± 1.3) x 10-3 13 2.840 2.766
2 12 23 21.09 +08 14 40.62 6.31 (3.6 ± 1.3) x 10-3 13 2.670 2.741
3 12 23 44.73 +08 15 17.00 6.12 (3.7 ± 1.4) x 10-3 12 2.649 2.575

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J1223.3+0818 Swift-XRT image with known radio, optical and UV sources for 3FGL J1223.3+0818

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 CXO J122321.5+081433 12 23 21.50 +08 14 33.36 4.23 CHANDRA
X122321.62+081433.1 12 23 21.62 +08 14 33.00 4.23 CHANDRA
2 CXOGSG J122258.7+081518 12 22 58.75 +08 15 19.08 6.66 CHANDRA
X122258.72+081519.0 12 22 58.73 +08 15 19.08 6.66 CHANDRA
3 CXO J122340.4+081227 12 23 40.39 +08 12 27.36 7.84 CHANDRA
4 CXO J122259.9+081122 12 23 00.00 +08 11 22.56 9.15 CHANDRA
X122259.79+081114.7 12 22 59.78 +08 11 14.64 9.29 CHANDRA
5 X122254.30+081218.6 12 22 54.31 +08 12 18.72 9.37 CHANDRA
CXOGSG J122254.2+081218 12 22 54.29 +08 12 18.72 9.37 CHANDRA
6 X122242.20+081801.2 12 22 42.19 +08 18 01.08 9.80 CHANDRA
7 CXO J122310.6+080841 12 23 10.63 +08 08 41.64 10.45 CHANDRA
X122310.64+080841.8 12 23 10.63 +08 08 41.64 10.45 CHANDRA
8 CXOGSG J122252.6+080946 12 22 52.63 +08 09 46.44 11.53 CHANDRA
X122252.62+080946.6 12 22 52.63 +08 09 46.44 11.53 CHANDRA
CXO J122252.6+080946 12 22 52.63 +08 09 46.44 11.53 CHANDRA
X122252.58+080944.1 12 22 52.58 +08 09 44.28 11.57 CHANDRA
9 X122243.55+081129.0 12 22 43.56 +08 11 29.04 11.93 CHANDRA
CXOGSG J122243.5+081129 12 22 43.54 +08 11 29.04 11.93 CHANDRA
10 CXOGSG J122252.5+080904 12 22 52.61 +08 09 05.04 12.08 CHANDRA
X122252.55+080905.0 12 22 52.56 +08 09 05.04 12.09 CHANDRA
11 X122246.03+081029.2 12 22 46.30 +08 10 29.28 12.11 CHANDRA
CXOGSG J122246.0+081029 12 22 46.20 +08 10 29.28 12.11 CHANDRA
12 X122234.96+081335.6 12 22 34.97 +08 13 35.76 12.68 CHANDRA
CXOGSG J122234.9+081335 12 22 34.94 +08 13 35.76 12.68 CHANDRA
13 X122243.40+081019.4 12 22 43.39 +08 10 19.56 12.71 CHANDRA
14 X122245.00+080930.6 12 22 45.00 +08 09 30.60 12.98 CHANDRA
CXOGSG J122244.9+080930 12 22 45.00 +08 09 30.60 12.98 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J122327+082030 12 23 27.41 +08 20 30.84 2.22 NVSS
FIRST J122327.5+082030 12 23 27.50 +08 20 30.12 2.24 FIRST
TGSSADR J122327.5+082029 12 23 27.60 +08 20 30.12 2.24 GMRTAS150M
FIRST J122336.0+081725 12 23 36.10 +08 17 25.08 3.81 FIRST
2 NVSS J122336+081722 12 23 36.10 +08 17 22.92 3.83 NVSS
TGSSADR J122314.1+082208 12 23 14.11 +08 22 09.12 3.85 GMRTAS150M
FIRST J122313.9+082209 12 23 13.90 +08 22 09.12 3.88 FIRST
3 NVSS J122314+082214 12 23 14.11 +08 22 14.88 3.93 NVSS
FIRST J122354.7+081855 12 23 54.70 +08 18 55.08 8.17 FIRST
4 NVSS J122354+081854 12 23 54.79 +08 18 55.08 8.19 NVSS
TGSSADR J122354.8+081855 12 23 54.79 +08 18 56.16 8.19 GMRTAS150M
5 FIRST J122344.4+081037 12 23 44.40 +08 10 37.92 9.91 FIRST
6 FIRST J122239.0+081705 12 22 39.00 +08 17 06.00 10.69 FIRST
7 FIRST J122358.3+081158 12 23 58.30 +08 11 58.92 11.33 FIRST
FIRST J122252.6+080946 12 22 52.61 +08 09 47.16 11.53 FIRST
8 NVSS J122253+080937 12 22 53.30 +08 09 37.08 11.56 NVSS
9 FIRST J122355.0+082716 12 23 55.01 +08 27 16.92 11.83 FIRST
10 FIRST J122407.2+082251 12 24 07.20 +08 22 50.88 11.97 FIRST
11 NVSS J122359+080932 12 23 59.09 +08 09 33.12 13.08 NVSS
12 1220+0826 12 22 34.51 +08 10 10.92 14.50 NORTH6CM
13 NVSS J122235+080840 12 22 35.71 +08 08 40.92 15.21 NVSS
FIRST J122235.6+080839 12 22 35.71 +08 08 39.12 15.25 FIRST

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