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 J2026.3+1431

Field

Detected Excesses
Swift-XRT image of the field for 4FGL J2026.3+1431 Swift-XRT detections in the field for 4FGL J2026.3+1431


No detected excesses found.

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 26.48 +14 23 25.66 5.64 (3.5 ± 1.3) x 10-3 15 2.921 2.670
2 20 25 40.88 +14 38 13.18 6.12 (3.1 ± 1.2) x 10-3 11 2.395 2.549

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 4FGL J2026.3+1431 Swift-XRT image with known radio, optical and UV sources for 4FGL J2026.3+1431


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
1 NVSS J202631+143054 20 26 31.49 +14 30 55.08 1.93 NVSS
2 PPM 138347 20 26 30.96 +14 33 25.20 2.71 PPM
BD+14 4295 20 26 30.96 +14 33 25.56 2.72 ACRS
3 NVSS J202637+143357 20 26 37.20 +14 33 57.96 4.18 NVSS
TGSSADR J202637.1+143359 20 26 37.20 +14 34 00.12 4.19 GMRTAS150M
4 WDS J20267+1431 20 26 42.00 +14 31 00.12 4.44 WDS
5 NVSS J202601+143317 20 26 01.70 +14 33 16.92 5.67 NVSS
TXS 2024+144A 20 26 27.19 +14 37 10.92 5.89 TEXAS
6 NVSS J202626+143712 20 26 26.90 +14 37 12.00 5.90 NVSS
TGSSADR J202626.9+143712 20 26 26.90 +14 37 12.00 5.90 GMRTAS150M
7 GLEAM J202625+143738 20 26 25.70 +14 37 37.92 6.30 GLEAMEGCAT
TGSSADR J202622.3+143739 20 26 22.39 +14 37 40.08 6.32 GMRTAS150M
GB6 J2026+1437 20 26 24.41 +14 37 49.08 6.47 GB6
VLSSr J202624.7+143752 20 26 24.70 +14 37 51.96 6.53 VLSSR
8 NVSS J202623+143755 20 26 23.81 +14 37 55.92 6.58 NVSS
TGSSADR J202624.3+143800 20 26 24.31 +14 38 00.96 6.66 GMRTAS150M
9 NVSS J202657+143124 20 26 57.70 +14 31 23.88 8.23 NVSS
10 NVSS J202620+143952 20 26 20.71 +14 39 52.92 8.56 NVSS
11 PGCC G57.12-13.51 20 26 18.60 +14 21 48.96 9.62 PLANCKGCC
12 NVSS J202546+143452 20 25 46.01 +14 34 53.04 9.78 NVSS
13 NVSS J202541+142842 20 25 41.59 +14 28 42.96 10.53 NVSS
14 NVSS J202546+143800 20 25 46.80 +14 37 59.88 11.13 NVSS
15 GB6 J2027+1439 20 27 00.91 +14 39 45.00 12.31 GB6
16 BI DEL 20 26 40.15 +14 19 40.80 12.33 WOODEBCAT
TGSSADR J202550.9+142152 20 25 50.90 +14 21 52.92 12.35 GMRTAS150M
17 NVSS J202550+142150 20 25 51.00 +14 21 50.04 12.38 NVSS
18 NVSS J202704+143955 20 27 04.49 +14 39 56.16 13.07 NVSS
TGSSADR J202704.4+143955 20 27 04.49 +14 39 56.16 13.08 GMRTAS150M
19 TXS 2024+144B 20 27 07.90 +14 39 03.96 13.17 TEXAS
GLEAM J202705+143949 20 27 05.50 +14 39 50.04 13.20 GLEAMEGCAT
20 NVSS J202654+144227 20 26 54.70 +14 42 27.00 13.40 NVSS
21 NVSS J202541+144013 20 25 41.71 +14 40 13.08 13.49 NVSS

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