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.

4FGL J2250.6+5809

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2250.6+5809 Swift-XRT detections in the field for 4FGL J2250.6+5809

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 22 49 55.19 +58 11 47.37 4.33 (1.6 ± 0.2) x 10-2 83 8.363 8.339

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 22 50 34.77 +58 06 54.45 6.04 (1.8 ± 0.8) x 10-3 18 2.424 2.296

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2250.6+5809 Swift-XRT image with known radio, optical and UV sources for 4FGL J2250.6+5809


No known X-ray or gamma ray sources found.

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
VLSSr J225027.2+580638 22 50 27.31 +58 06 38.88 2.70 VLSSR
1 TGSSADR J225021.2+580708 22 50 21.31 +58 07 09.12 2.76 GMRTAS150M
2 NVSS J225014+580848 22 50 14.50 +58 08 48.84 2.89 NVSS
WN 2248.4+5750 22 50 26.90 +58 06 24.84 2.94 WENSS
7C 224825.7+575028 22 50 27.10 +58 06 23.04 2.95 GP7C151MHZ
TGSSADR J225026.8+580623 22 50 26.81 +58 06 24.12 2.95 GMRTAS150M
3 NVSS J225026+580622 22 50 26.81 +58 06 23.04 2.96 NVSS
CGPS J225027+580622 22 50 27.00 +58 06 21.96 2.97 CGPSNGPCAT
TXS 2248+578 22 50 26.90 +58 06 21.96 2.98 TEXAS
4 2248+5750 22 50 21.31 +58 06 33.12 3.21 NORTH6CM
5 NVSS J225016+580441 22 50 16.90 +58 04 41.16 5.07 NVSS
6 WDS J22496+5804 22 49 36.00 +58 04 00.12 9.44 WDS
7 PPM 41179 22 51 47.14 +58 11 17.16 9.60 PPM
BD+57 2629 22 51 47.16 +58 11 17.16 9.60 ACRS
SAO 34888 22 51 47.16 +58 11 17.52 9.60 SAO
8 CGPS J225200+581257 22 52 00.29 +58 12 57.96 11.73 CGPSNGPCAT
9 NVSS J224906+580809 22 49 06.10 +58 08 09.96 11.93 NVSS
10 NVSS J224936+575932 22 49 36.10 +57 59 31.92 12.42 NVSS
NVSS J224934+575920 22 49 34.80 +57 59 20.04 12.68 NVSS
11 King 18 22 52 01.01 +58 17 35.88 14.04 OPENCLUST

Penn State University Goddard Space Flight Center Swift