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.

1FGL J1627.6+3218

Field

Detected Excesses

Swift-XRT image of the field for 1FGL J1627.6+3218 Swift-XRT detections in the field for 1FGL J1627.6+3218

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 16 27 42.98 +32 21 01.25 4.45 (1.02 ± 0.13) x 10-2 73 7.548 7.622
2 16 28 00.21 +32 24 15.72 4.88 (6.0 ± 1.0) x 10-3 44 6.126 6.125
3 16 27 18.89 +32 28 02.15 4.92 (3.5 ± 0.9) x 10-3 28 4.302 4.042
4 16 27 08.73 +32 24 13.37 5.35 (2.0 ± 0.6) x 10-3 26 3.238 3.130

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 26 50.23 +32 19 39.87 6.12 (1.4 ± 0.5) x 10-3 12 2.726 2.696
2 16 27 31.41 +32 18 13.46 6.41 (1.3 ± 0.5) x 10-3 18 2.551 2.541
3 16 27 24.24 +32 26 10.63 5.89 (1.4 ± 0.6) x 10-3 17 2.478 2.502
4 16 28 01.26 +32 16 37.52 6.31 (1.3 ± 0.5) x 10-3 15 2.769 2.449
5 16 27 33.92 +32 26 51.21 5.70 (1.5 ± 0.6) x 10-3 17 2.574 2.398

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 1FGL J1627.6+3218 Swift-XRT image with known radio, optical and UV sources for 1FGL J1627.6+3218

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J162744.9+322034 16 27 44.93 +32 20 34.44 2.25 ROSAT
2RXS J162744.9+322034 16 27 44.93 +32 20 34.44 2.25 ROSAT
1RXS J162745.0+322035 16 27 45.00 +32 20 35.16 2.27 ROSAT
2 SWIFT J162742.9+322100 16 27 42.96 +32 21 00.72 2.35 SWIFT
3 SWIFT J162800.3+322413 16 28 00.31 +32 24 13.32 7.13 SWIFT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
FIRST J162745.2+321712 16 27 45.29 +32 17 12.84 2.39 FIRST
1 NVSS J162745+321715 16 27 45.60 +32 17 16.08 2.41 NVSS
WN 1625.3+3223 16 27 15.79 +32 16 55.92 5.01 WENSS
2 NVSS J162715+321654 16 27 15.29 +32 16 54.12 5.12 NVSS
FIRST J162715.3+321652 16 27 15.29 +32 16 53.04 5.13 FIRST
TGSSADR J162715.2+321653 16 27 15.29 +32 16 53.04 5.14 GMRTAS150M
3 MITG J1627+3224 16 27 32.11 +32 24 56.16 6.08 MITGB6CM
4 MITG J1627+3227 16 27 17.40 +32 27 24.84 9.46 MITGB6CM
5 FIRST J162827.2+322052 16 28 27.29 +32 20 52.08 10.69 FIRST
6 FIRST J162823.5+322337 16 28 23.50 +32 23 38.04 10.78 FIRST
7 NVSS J162808+321013 16 28 08.21 +32 10 13.08 10.88 NVSS
FIRST J162809.3+321013 16 28 09.31 +32 10 13.08 11.03 FIRST
8 FIRST J162641.8+322427 16 26 41.90 +32 24 27.00 12.97 FIRST

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