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 J0544.4+2238

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0544.4+2238 Swift-XRT detections in the field for 4FGL J0544.4+2238

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 45 11.38 +22 39 55.22 5.53 (1.5 ± 0.3) x 10-2 29 5.284 5.128
2 05 44 40.99 +22 37 57.73 6.93 (8 ± 2) x 10-3 16 3.698 3.813

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 38.88 +22 45 50.09 7.27 (4 ± 2) x 10-3 9 2.459 2.397

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0544.4+2238 Swift-XRT image with known radio, optical and UV sources for 4FGL J0544.4+2238

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 4.14 ROSAT
2 2RXS J054419.2+223440 05 44 19.27 +22 34 40.80 4.15 ROSAT
3 2RXS J054511.0+223951 05 45 10.99 +22 39 51.84 10.42 ROSAT
1RXS J054511.1+223951 05 45 11.11 +22 39 51.48 10.44 ROSAT
4 2RXS J054347.8+222722 05 43 47.83 +22 27 21.96 14.24 ROSAT
1RXS J054347.8+222716 05 43 47.81 +22 27 15.84 14.32 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 TGSSADR J054413.3+223833 05 44 13.30 +22 38 34.08 2.98 GMRTAS150M
2 NVSS J054440+223747 05 44 40.10 +22 37 46.92 3.28 NVSS
3 NVSS J054459+224511 05 44 59.71 +22 45 11.16 10.22 NVSS
4 QORG J054511.0+223943 05 45 10.99 +22 39 42.84 10.40 QORGCAT
5 NVSS J054340+223755 05 43 40.10 +22 37 54.84 10.67 NVSS
CGPS J054510+224324 05 45 10.90 +22 43 23.88 11.40 CGPSNGPCAT
6 NVSS J054510+224325 05 45 10.90 +22 43 24.96 11.42 NVSS
TGSSADR J054510.9+224327 05 45 10.99 +22 43 27.12 11.44 GMRTAS150M
7 NVSS J054444+224922 05 44 44.40 +22 49 22.08 11.65 NVSS
8 BG 0541+22 05 44 01.80 +22 49 15.96 12.16 DIXON
9 0541+2225 05 44 04.20 +22 27 14.04 12.37 NORTH6CM
10 NVSS J054442+225023 05 44 42.00 +22 50 22.92 12.43 NVSS
GB6 J0544+2226 05 44 05.90 +22 26 52.08 12.55 GB6
11 TXS 0542+227 05 45 15.41 +22 44 21.12 12.76 TEXAS
TGSSADR J054406.5+222634 05 44 06.50 +22 26 35.16 12.77 GMRTAS150M
12 NVSS J054406+222632 05 44 06.60 +22 26 31.92 12.80 NVSS
13 GB6 J0545+2249 05 45 10.90 +22 49 17.04 14.91 GB6
CGPS J054510+225009 05 45 10.39 +22 50 09.96 15.48 CGPSNGPCAT
14 NVSS J054510+225010 05 45 10.51 +22 50 11.04 15.50 NVSS
TGSSADR J054510.5+225013 05 45 10.51 +22 50 12.84 15.54 GMRTAS150M

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