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 J0451.6+7231

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0451.6+7231 Swift-XRT detections in the field for 3FGL J0451.6+7231

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 04 51 21.28 +72 28 43.10 6.65 (7 ± 2) x 10-3 17 3.837 3.829

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 04 50 20.32 +72 29 10.65 7.71 (4 ± 2) x 10-3 8 2.392 2.513
2 04 54 06.11 +72 33 41.77 6.12 (4 ± 2) x 10-3 13 2.807 2.450
3 04 53 12.46 +72 42 13.54 5.59 (4 ± 2) x 10-3 13 2.690 2.077
4 04 52 51.98 +72 42 53.15 6.21 (2.4 ± 1.4) x 10-3 8 2.289 1.690

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0451.6+7231 Swift-XRT image with known radio, optical and UV sources for 3FGL J0451.6+7231

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J045006.0+723011 04 50 06.00 +72 30 11.16 7.12 ROSAT
2 2RXS J045006.0+722918 04 50 06.10 +72 29 18.24 7.28 ROSAT
2RXS J045006.0+722918 04 50 06.10 +72 29 18.24 7.28 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J045154+723205 04 51 54.60 +72 32 04.92 1.49 NVSS
2 NVSS J045109+723014 04 51 09.19 +72 30 15.12 2.46 NVSS
3 NVSS J045015+723403 04 50 15.60 +72 34 04.08 6.99 NVSS
4 NVSS J045328+723454 04 53 28.80 +72 34 54.12 9.01 NVSS
5 0447+7220 04 53 32.21 +72 25 27.12 10.15 NORTH6CM
6 NVSS J045351+723430 04 53 51.00 +72 34 30.00 10.41 NVSS
TGSSADR J045333.0+722457 04 53 33.10 +72 24 56.88 10.49 GMRTAS150M
7 NVSS J045333+722456 04 53 33.29 +72 24 56.16 10.51 NVSS
WN 0447.6+7219 04 53 33.50 +72 24 56.88 10.52 WENSS
VLSSr J045332.2+722448 04 53 32.21 +72 24 48.96 10.53 VLSSR
WN 0447.3+7236 04 53 16.39 +72 41 58.92 13.07 WENSS
8 NVSS J045316+724158 04 53 16.80 +72 41 58.92 13.08 NVSS
TGSSADR J045316.8+724159 04 53 16.90 +72 42 00.00 13.10 GMRTAS150M
9 NVSS J044920+721959 04 49 20.81 +72 19 59.88 15.27 NVSS

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