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 J0544.7+2239

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J0544.7+2239 Swift-XRT detections in the field for 3FGL J0544.7+2239

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 45 11.21 +22 39 54.12 4.83 (1.3 ± 0.2) x 10-2 49 6.580 6.619
2 05 44 40.83 +22 37 59.88 5.82 (6 ± 2) x 10-3 24 4.252 4.435

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 05 44 38.73 +22 45 50.16 6.52 (2.9 ± 1.0) x 10-3 12 2.803 2.811
2 05 45 28.26 +22 36 27.77 6.65 (2.8 ± 1.0) x 10-3 11 2.804 2.775

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J0544.7+2239 Swift-XRT image with known radio, optical and UV sources for 3FGL J0544.7+2239

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J054441.8+224032 05 44 41.86 +22 40 32.88 1.12 ROSAT
2 2RXS J054511.0+223951 05 45 10.99 +22 39 51.84 6.66 ROSAT
1RXS J054511.1+223951 05 45 11.11 +22 39 51.48 6.68 ROSAT
3 2RXS J054419.2+223440 05 44 19.27 +22 34 40.80 7.11 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J054440+223747 05 44 40.10 +22 37 46.92 1.71 NVSS
2 TGSSADR J054413.3+223833 05 44 13.30 +22 38 34.08 6.71 GMRTAS150M
3 NVSS J054459+224511 05 44 59.71 +22 45 11.16 7.04 NVSS
CGPS J054510+224324 05 45 10.90 +22 43 23.88 7.72 CGPSNGPCAT
4 NVSS J054510+224325 05 45 10.90 +22 43 24.96 7.73 NVSS
TGSSADR J054510.9+224327 05 45 10.99 +22 43 27.12 7.76 GMRTAS150M
5 TXS 0542+227 05 45 15.41 +22 44 21.12 9.10 TEXAS
6 NVSS J054523+224106 05 45 23.50 +22 41 06.00 9.67 NVSS
7 NVSS J054444+224922 05 44 44.40 +22 49 22.08 9.95 NVSS
8 NVSS J054442+225023 05 44 42.00 +22 50 22.92 10.96 NVSS
9 GB6 J0545+2244 05 45 23.71 +22 44 47.04 10.97 GB6
10 NVSS J054529+223648 05 45 29.81 +22 36 48.96 11.28 NVSS
11 NVSS J054526+224513 05 45 26.81 +22 45 12.96 11.81 NVSS
TGSSADR J054526.9+224517 05 45 26.90 +22 45 16.92 11.86 GMRTAS150M
CGPS J054526+224536 05 45 26.11 +22 45 36.00 11.86 CGPSNGPCAT
12 GB6 J0545+2249 05 45 10.90 +22 49 17.04 11.87 GB6
VLSSr J054526.1+224537 05 45 26.21 +22 45 37.08 11.88 VLSSR
13 NVSS J054525+224620 05 45 25.20 +22 46 21.00 12.10 NVSS
TGSSADR J054525.2+224619 05 45 25.30 +22 46 19.92 12.10 GMRTAS150M
CGPS J054510+225009 05 45 10.39 +22 50 09.96 12.55 CGPSNGPCAT
14 NVSS J054510+225010 05 45 10.51 +22 50 11.04 12.57 NVSS
TGSSADR J054510.5+225013 05 45 10.51 +22 50 12.84 12.61 GMRTAS150M
15 BG 0541+22 05 44 01.80 +22 49 15.96 13.56 DIXON
TGSSADR J054527.0+223033 05 45 27.00 +22 30 33.84 13.63 GMRTAS150M
16 NVSS J054527+223032 05 45 27.00 +22 30 33.12 13.65 NVSS

Penn State University Goddard Space Flight Center Swift