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 J2151.6+4154

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J2151.6+4154 Swift-XRT detections in the field for 3FGL J2151.6+4154

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 21 51 22.99 +41 56 34.59 4.30 (3.3 ± 0.4) x 10-2 87 8.613 8.418

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 21 51 48.10 +41 53 06.72 6.31 (5 ± 2) x 10-3 12 2.809 2.907
2 21 51 09.28 +41 59 07.22 7.09 (2.9 ± 1.2) x 10-3 11 2.472 2.479
3 21 51 48.83 +41 45 05.24 7.09 (2.8 ± 1.1) x 10-3 9 2.324 2.444
4 21 51 40.58 +42 05 09.86 6.41 (3.1 ± 1.3) x 10-3 11 2.480 2.356

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2151.6+4154 Swift-XRT image with known radio, optical and UV sources for 3FGL J2151.6+4154

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J215154.5+414421 21 51 54.50 +41 44 21.48 10.53 ROSAT
2 1RXS J215239.7+414613 21 52 39.72 +41 46 13.08 14.27 ROSAT
2RXS J215239.8+414612 21 52 39.89 +41 46 13.08 14.30 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J215137+415228 21 51 37.39 +41 52 28.92 1.88 NVSS
TGSSADR J215123.0+415630 21 51 23.11 +41 56 30.84 3.33 GMRTAS150M
2 NVSS J215122+415632 21 51 22.99 +41 56 33.00 3.37 NVSS
WN 2149.3+4142 21 51 23.30 +41 56 38.04 3.38 WENSS
3 NVSS J215111+415411 21 51 11.81 +41 54 11.16 4.65 NVSS
4 NVSS J215116+415117 21 51 16.39 +41 51 18.00 4.87 NVSS
5 NVSS J215207+415353 21 52 07.99 +41 53 53.88 5.82 NVSS
VLSSr J215205.7+415126 21 52 05.71 +41 51 25.92 6.13 VLSSR
6 NVSS J215205+415127 21 52 05.81 +41 51 27.00 6.14 NVSS
WN 2150.0+4137 21 52 05.90 +41 51 24.84 6.17 WENSS
TGSSADR J215205.9+415124 21 52 05.90 +41 51 24.12 6.18 GMRTAS150M
7 NVSS J215043+415939 21 50 43.61 +41 59 39.12 11.21 NVSS
WN 2150.5+4145 21 52 34.49 +41 59 26.88 11.88 WENSS
8 NVSS J215235+415919 21 52 35.81 +41 59 20.04 12.05 NVSS
9 NVSS J215240+415816 21 52 40.80 +41 58 17.04 12.54 NVSS
TGSSADR J215038.0+420220 21 50 38.11 +42 02 20.04 13.52 GMRTAS150M
WN 2148.6+4148 21 50 37.99 +42 02 21.12 13.53 WENSS
10 NVSS J215037+420221 21 50 37.80 +42 02 21.84 13.57 NVSS
VLSSr J215038.1+420230 21 50 38.21 +42 02 30.12 13.60 VLSSR

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