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 J0550.9+2552

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J0550.9+2552 Swift-XRT detections in the field for 4FGL J0550.9+2552

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 05 50 47.63 +26 03 16.43 4.60 (6.7 ± 0.9) x 10-3 61 7.107 7.430
2 05 51 12.55 +25 48 02.79 5.44 (1.6 ± 0.5) x 10-3 22 3.374 3.310
3 05 50 23.39 +25 57 25.69 5.64 (1.4 ± 0.4) x 10-3 16 3.139 3.191
4 05 51 15.57 +25 57 59.71 6.31 (1.3 ± 0.4) x 10-3 13 3.001 3.080

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J0550.9+2552 Swift-XRT image with known radio, optical and UV sources for 4FGL J0550.9+2552

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 2RXS J055048.5+260309 05 50 48.53 +26 03 09.36 11.15 ROSAT
1RXS J055048.5+260310 05 50 48.50 +26 03 10.08 11.16 ROSAT
1RXS J055048.5+260310 05 50 48.50 +26 03 10.44 11.17 ROSAT
HD 39005 05 50 47.74 +26 03 16.20 11.30 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 PGCC G183.25-0.58 05 50 57.19 +25 51 09.00 1.17 PLANCKGCC
TGSSADR J055045.3+254931 05 50 45.31 +25 49 31.08 4.12 GMRTAS150M
2 NVSS J055045+254915 05 50 45.50 +25 49 14.88 4.28 NVSS
CGPS J055045+254903 05 50 45.31 +25 49 03.00 4.44 CGPSNGPCAT
GB6 J0551+2549 05 51 18.91 +25 49 05.16 5.50 GB6
TXS 0548+258 05 51 19.39 +25 49 06.96 5.57 TEXAS
0548+2548 05 51 19.61 +25 49 10.92 5.57 NORTH6CM
CGPS J055119+254909 05 51 19.70 +25 49 09.84 5.59 CGPSNGPCAT
3 NVSS J055119+254909 05 51 19.70 +25 49 09.12 5.60 NVSS
VLSSr J055119.7+254909 05 51 19.70 +25 49 09.84 5.60 VLSSR
TGSSADR J055119.7+254908 05 51 19.80 +25 49 09.12 5.63 GMRTAS150M
4 B2.2 0548+25A 05 51 19.10 +25 48 33.12 5.86 DIXON
5 NVSS J055120+255619 05 51 20.69 +25 56 18.96 6.35 NVSS
6 NVSS J055031+255430 05 50 31.39 +25 54 29.88 6.60 NVSS
CGPS J055031+255439 05 50 31.51 +25 54 38.88 6.63 CGPSNGPCAT
7 FSR 0849 05 51 13.01 +25 46 18.12 6.75 OPENCLUST
8 VRO25.05.01 05 51 26.21 +25 55 19.92 6.85 DIXON
9 CGPS J055122+255644 05 51 22.20 +25 56 44.16 6.88 CGPSNGPCAT
CGPS J055048+254505 05 50 48.50 +25 45 06.12 7.54 CGPSNGPCAT
TGSSADR J055048.6+254504 05 50 48.60 +25 45 05.04 7.55 GMRTAS150M
10 NVSS J055048+254504 05 50 48.41 +25 45 03.96 7.57 NVSS
11 NVSS J055059+254305 05 50 58.99 +25 43 05.16 9.17 NVSS
CGPS J055059+254255 05 50 59.09 +25 42 55.08 9.34 CGPSNGPCAT
TGSSADR J055122.7+260058 05 51 22.70 +26 00 57.96 10.22 GMRTAS150M
12 NVSS J055122+260058 05 51 22.70 +26 00 57.96 10.22 NVSS
CGPS J055122+260059 05 51 22.61 +26 00 59.04 10.22 CGPSNGPCAT
13 1G 355 05 51 11.83 +25 41 45.24 10.90 WACKERLING
0548+2557 05 51 42.00 +25 57 48.96 11.15 NORTH20CM
0548+2557 05 51 42.00 +25 57 48.96 11.15 NORTH6CM
MITG J0551+2557 05 51 42.19 +25 57 47.16 11.18 MITGB6CM
GB6 J0551+2557 05 51 42.00 +25 57 51.84 11.18 GB6
CGPS J055142+255749 05 51 42.31 +25 57 50.04 11.23 CGPSNGPCAT
14 NVSS J055142+255749 05 51 42.31 +25 57 50.04 11.23 NVSS
7C 054836.2+255705 05 51 42.41 +25 57 47.88 11.24 GP7C151MHZ
TXS 0548+259 05 51 42.41 +25 57 50.04 11.24 TEXAS
VLSSr J055142.5+255745 05 51 42.60 +25 57 46.08 11.25 VLSSR
TGSSADR J055142.5+255750 05 51 42.50 +25 57 50.04 11.27 GMRTAS150M
15 PPM 94961 05 50 47.76 +26 03 15.12 11.28 PPM
HD 39005 05 50 47.78 +26 03 15.12 11.28 HIC
BD+26 975 05 50 47.76 +26 03 15.12 11.28 ACRS
B2.2 0548+25B 05 51 42.60 +25 57 48.96 11.28 DIXON
SAO 77622 05 50 47.78 +26 03 15.84 11.29 SAO
HIP 27612 05 50 47.76 +26 03 15.84 11.29 HIPPARCOS
16 WDS J05509+2604 05 50 54.00 +26 04 00.12 11.79 WDS
17 NVSS J055125+254130 05 51 25.39 +25 41 30.12 12.29 NVSS
CGPS J055125+254122 05 51 25.30 +25 41 22.92 12.39 CGPSNGPCAT

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