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.

2FGL J1623.2+4328

Field

Detected Excesses
Swift-XRT image of the field for 2FGL J1623.2+4328 Swift-XRT detections in the field for 2FGL J1623.2+4328

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 22 54.09 +43 24 12.15 5.82 (6 ± 2) x 10-3 23 3.896 3.985
2 16 23 12.02 +43 25 41.62 5.96 (3.9 ± 1.2) x 10-3 19 3.099 3.215

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 16 22 16.71 +43 35 22.41 6.41 (2.9 ± 1.0) x 10-3 10 2.831 2.787
2 16 22 41.25 +43 36 08.19 6.41 (2.5 ± 1.0) x 10-3 9 2.655 2.474
3 16 23 48.60 +43 31 23.43 6.65 (2.5 ± 1.0) x 10-3 11 2.463 2.468
4 16 22 34.97 +43 19 28.94 5.76 (1.8 ± 0.9) x 10-3 15 3.046 2.080

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 2FGL J1623.2+4328 Swift-XRT image with known radio, optical and UV sources for 2FGL J1623.2+4328

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J162215.9+433512 16 22 15.98 +43 35 12.48 12.86 ROSAT
2RXS J162215.9+433512 16 22 15.98 +43 35 12.48 12.86 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 FIRST J162305.2+432707 16 23 05.30 +43 27 07.92 2.10 FIRST
2 FIRST J162332.8+433323 16 23 32.90 +43 33 23.04 6.11 FIRST
7C 162148.4+434100 16 23 24.19 +43 34 06.96 6.16 UC7C151MHZ
FIRST J162324.4+433426 16 23 24.41 +43 34 27.12 6.49 FIRST
TGSSADR J162323.2+433430 16 23 23.30 +43 34 31.08 6.51 GMRTAS150M
3 NVSS J162323+433430 16 23 23.30 +43 34 31.08 6.51 NVSS
FIRST J162323.4+433431 16 23 23.50 +43 34 31.08 6.53 FIRST
WN 1621.7+4341 16 23 23.21 +43 34 32.88 6.55 WENSS
FIRST J162322.5+433437 16 23 22.51 +43 34 36.84 6.59 FIRST
4 NVSS J162358+432714 16 23 58.30 +43 27 15.12 7.85 NVSS
FIRST J162358.2+432714 16 23 58.30 +43 27 14.04 7.85 FIRST
5 FIRST J162302.7+431757 16 23 02.81 +43 17 57.12 10.46 FIRST
6 NVSS J162232+431937 16 22 32.30 +43 19 37.92 11.57 NVSS
FIRST J162230.7+431944 16 22 30.79 +43 19 44.04 11.69 FIRST
7 FIRST J162215.5+432334 16 22 15.60 +43 23 35.16 11.78 FIRST
8 FIRST J162357.4+431832 16 23 57.41 +43 18 33.12 12.29 FIRST
FIRST J162359.1+431836 16 23 59.11 +43 18 36.00 12.43 FIRST
TGSSADR J162359.0+431833 16 23 59.11 +43 18 33.84 12.46 GMRTAS150M
FIRST J162358.0+431822 16 23 58.01 +43 18 21.96 12.49 FIRST
FIRST J162400.3+431841 16 24 00.29 +43 18 42.12 12.51 FIRST
WN 1622.4+4325 16 24 00.41 +43 18 39.96 12.54 WENSS
9 NVSS J162400+431838 16 24 00.19 +43 18 38.16 12.54 NVSS
FIRST J162401.7+431849 16 24 01.80 +43 18 48.96 12.59 FIRST
FIRST J162414.0+432022 16 24 13.99 +43 20 22.92 13.20 FIRST
10 NVSS J162413+432018 16 24 13.80 +43 20 18.96 13.21 NVSS

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