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 J2027.0+3343

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2027.0+3343 Swift-XRT detections in the field for 4FGL J2027.0+3343

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 26 58.68 +33 43 02.60 3.60 (1.16 ± 0.04) x 10-1 957 28.080 29.700
2 20 27 42.27 +33 44 11.91 5.82 (1.7 ± 0.5) x 10-3 17 3.237 3.210

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 20 26 51.68 +33 36 42.83 5.76 (1.0 ± 0.4) x 10-3 18 2.511 2.404
2 20 26 58.68 +33 43 02.60 3.60 N/A 957 3.108 N/A

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2027.0+3343 Swift-XRT image with known radio, optical and UV sources for 4FGL J2027.0+3343

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 XMMSL2 J202658.5+334309 20 26 58.63 +33 43 08.76 1.31 XMM-NEWTON
1RXS J202658.5+334253 20 26 58.51 +33 42 52.92 1.40 ROSAT
1RXS J202658.5+334253 20 26 58.51 +33 42 52.92 1.40 ROSAT
2RXS J202658.3+334252 20 26 58.32 +33 42 52.92 1.43 ROSAT
2RXP J202657.9+334324 20 26 57.84 +33 43 24.24 1.46 ROSAT
1WGA J2026.9+3343 20 26 57.50 +33 43 07.68 1.55 ROSAT
2 1WGA J2027.6+3344 20 27 37.99 +33 44 40.92 7.02 ROSAT
3 1WGA J2026.3+3343 20 26 21.19 +33 43 53.76 9.10 ROSAT
4 1WGA J2026.3+3340 20 26 19.01 +33 40 50.16 9.86 ROSAT
5 2CXO J202743.9+333627 20 27 43.99 +33 36 27.36 10.66 CHANDRA
6 2CXO J202739.8+333355 20 27 39.86 +33 33 55.44 11.89 CHANDRA
7 2CXO J202754.7+333602 20 27 54.70 +33 36 02.16 12.68 CHANDRA
8 CXOGSG J202801.9+333636 20 28 01.99 +33 36 36.72 13.65 CHANDRA
2CXO J202802.0+333636 20 28 02.02 +33 36 37.08 13.66 CHANDRA
9 1WGA J2026.2+3352 20 26 17.30 +33 52 52.32 13.74 ROSAT
10 2CXO J202759.2+333449 20 27 59.21 +33 34 49.80 14.15 CHANDRA
11 2CXO J202801.7+333512 20 28 01.75 +33 35 12.12 14.36 CHANDRA
CXOGSG J202801.8+333512 20 28 01.80 +33 35 12.48 14.37 CHANDRA
12 2CXO J202751.2+333208 20 27 51.24 +33 32 08.88 14.77 CHANDRA
CXOGSG J202751.2+333208 20 27 51.22 +33 32 08.52 14.77 CHANDRA
13 2CXO J202756.8+333227 20 27 56.83 +33 32 27.24 15.34 CHANDRA
CXOGSG J202757.3+333211 20 27 57.36 +33 32 12.12 15.60 CHANDRA
2CXO J202757.3+333210 20 27 57.31 +33 32 10.32 15.61 CHANDRA

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
CGPS J202658+334302 20 26 58.51 +33 43 03.00 1.36 CGPSNGPCAT
1 NVSS J202658+334316 20 26 58.20 +33 43 15.96 1.39 NVSS
QORG J202657.2+334313 20 26 57.19 +33 43 13.08 1.60 QORGCAT
2 SAO 70040 20 26 57.94 +33 44 39.84 1.96 SAO
BD+33 3908 20 26 57.96 +33 44 40.20 1.96 ACRS
PPM 84967 20 26 57.96 +33 44 40.20 1.96 PPM
HD 332231 20 26 57.96 +33 44 40.20 1.96 HDEC
3 284- 4 20 26 56.02 +33 40 43.68 3.19 NLTT
4 NVSS J202722+334302 20 27 22.30 +33 43 01.92 3.63 NVSS
CGPS J202722+334301 20 27 22.30 +33 43 00.84 3.64 CGPSNGPCAT
5 HD 332232 20 26 47.90 +33 42 06.12 3.74 HDEC
CGPS J202657+334645 20 26 57.00 +33 46 45.84 3.80 CGPSNGPCAT
WN 2025.1+3337 20 27 05.30 +33 47 12.12 3.87 WENSS
CGPS J202705+334716 20 27 05.69 +33 47 16.08 3.94 CGPSNGPCAT
TGSSADR J202705.3+334718 20 27 05.40 +33 47 18.96 3.98 GMRTAS150M
6 NVSS J202705+334719 20 27 05.30 +33 47 20.04 4.00 NVSS
7 NVSS J202656+334707 20 26 56.71 +33 47 08.16 4.16 NVSS
8 CGPS J202705+333847 20 27 05.81 +33 38 48.12 4.54 CGPSNGPCAT
9 NVSS J202727+334407 20 27 27.10 +33 44 08.16 4.69 NVSS
CGPS J202727+334402 20 27 27.41 +33 44 02.04 4.74 CGPSNGPCAT
10 QORG J202737.7+334442 20 27 37.70 +33 44 42.00 6.96 QORGCAT
11 HD 332274 20 27 42.58 +33 44 22.20 7.91 HDEC
12 CGPS J202749+334144 20 27 49.70 +33 41 44.88 9.46 CGPSNGPCAT
WN 2024.9+3342 20 26 53.59 +33 52 36.84 9.58 WENSS
B2 2024+33 20 26 54.41 +33 52 44.04 9.65 DIXON
TXS 2024+337 20 26 53.90 +33 52 42.96 9.66 TEXAS
TGSSADR J202653.5+335241 20 26 53.50 +33 52 41.88 9.66 GMRTAS150M
CGPS J202653+335243 20 26 53.50 +33 52 42.96 9.68 CGPSNGPCAT
13 NVSS J202653+335243 20 26 53.59 +33 52 44.04 9.69 NVSS
14 PGCC G73.47-2.51 20 26 41.40 +33 54 28.08 12.16 PLANCKGCC
CGPS J202608+333714 20 26 08.50 +33 37 14.88 13.22 CGPSNGPCAT
WN 2024.1+3327 20 26 07.99 +33 37 21.00 13.27 WENSS
TGSSADR J202608.0+333715 20 26 08.11 +33 37 14.88 13.28 GMRTAS150M
15 NVSS J202607+333718 20 26 07.90 +33 37 18.12 13.29 NVSS

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