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 J2358.5+3827

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J2358.5+3827 Swift-XRT detections in the field for 3FGL J2358.5+3827

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 23 58 24.95 +38 28 57.23 4.03 (5.0 ± 0.5) x 10-2 146 11.020 11.170
2 23 57 49.66 +38 37 47.45 4.24 (2.8 ± 0.3) x 10-2 87 9.055 8.538
3 23 58 15.03 +38 35 57.61 5.35 (9 ± 2) x 10-3 32 4.868 4.983

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 57 55.55 +38 20 17.98 6.31 (5 ± 2) x 10-3 16 2.580 2.684

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2358.5+3827 Swift-XRT image with known radio, optical and UV sources for 3FGL J2358.5+3827

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 LP 291-34 23 57 50.90 +38 37 48.00 13.30 ROSAT
1RXS J235750.9+383748 23 57 50.90 +38 37 48.00 13.30 ROSAT
1RXS J235750.9+383748 23 57 50.90 +38 37 48.00 13.30 ROSAT
2RXS J235750.5+383750 23 57 50.52 +38 37 50.88 13.38 ROSAT
2RXS J235750.5+383750 23 57 50.52 +38 37 50.88 13.38 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
GB6 J2358+3828 23 58 25.90 +38 28 53.04 2.06 GB6
2355+3812 23 58 25.51 +38 28 53.04 2.10 NORTH6CM
WN 2355.8+3812 23 58 25.20 +38 28 54.84 2.17 WENSS
TGSSADR J235825.4+382857 23 58 25.39 +38 28 58.08 2.18 GMRTAS150M
1 NVSS J235825+382857 23 58 25.20 +38 28 58.08 2.21 NVSS
GB6 J2357+3823 23 57 58.10 +38 23 36.96 7.60 GB6
2355+3807 23 57 57.41 +38 23 51.00 7.61 NORTH6CM
2 NVSS J235757+382338 23 57 57.79 +38 23 39.12 7.64 NVSS
TGSSADR J235757.7+382338 23 57 57.79 +38 23 38.04 7.64 GMRTAS150M
WN 2355.4+3806 23 57 57.79 +38 23 35.88 7.66 WENSS
VLSSr J235757.6+382331 23 57 57.70 +38 23 31.92 7.71 VLSSR
WN 2356.4+3805 23 59 01.90 +38 21 59.04 7.84 WENSS
3 NVSS J235901+382150 23 59 01.51 +38 21 51.12 7.87 NVSS
WN 2355.3+3812 23 57 51.41 +38 28 51.96 8.15 WENSS
TGSSADR J235751.5+382858 23 57 51.50 +38 28 58.08 8.15 GMRTAS150M
4 NVSS J235751+382855 23 57 51.31 +38 28 54.84 8.18 NVSS
VLSSr J235751.0+382910 23 57 51.00 +38 29 11.04 8.29 VLSSR
GB6 J2359+3834 23 59 23.81 +38 34 05.88 12.21 GB6
TGSSADR J235924.7+383420 23 59 24.79 +38 34 19.92 12.49 GMRTAS150M
5 NVSS J235924+383422 23 59 24.70 +38 34 22.08 12.51 NVSS
WN 2356.8+3817A 23 59 24.91 +38 34 21.00 12.52 WENSS
WN 2356.8+3817 23 59 25.39 +38 34 17.04 12.57 WENSS
6 NVSS J235930+383337 23 59 30.91 +38 33 37.08 13.15 NVSS
WN 2356.8+3817B 23 59 32.81 +38 33 27.00 13.38 WENSS
TGSSADR J235739.2+381623 23 57 39.19 +38 16 23.88 15.01 GMRTAS150M
7 NVSS J235739+381624 23 57 39.10 +38 16 23.88 15.02 NVSS
WN 2355.1+3758A 23 57 39.10 +38 16 21.00 15.06 WENSS
8 WN 2355.1+3758 23 57 40.80 +38 15 27.00 15.50 WENSS

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