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 J2023.5+4126

Field

Detected Excesses

Swift-XRT image of the field for 3FGL J2023.5+4126 Swift-XRT detections in the field for 3FGL J2023.5+4126

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 23 21.81 +41 30 39.82 5.24 (6 ± 2) x 10-3 28 4.124 4.166
2 20 23 35.57 +41 25 18.07 5.20 (7 ± 2) x 10-3 33 4.346 4.128

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 23 32.99 +41 37 11.53 5.59 (3.4 ± 1.2) x 10-3 16 3.005 2.879
2 20 24 18.75 +41 33 44.75 5.76 (2.5 ± 1.0) x 10-3 15 2.444 2.426

X-Ray and Gamma Ray Catalogs

More Catalogs

Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2023.5+4126 Swift-XRT image with known radio, optical and UV sources for 3FGL J2023.5+4126

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 1RXS J202323.2+413037 20 23 23.21 +41 30 37.08 4.78 ROSAT
2 2RXS J202306.5+412834 20 23 06.50 +41 28 34.68 5.13 ROSAT
3 2RXS J202331.1+411748 20 23 31.13 +41 17 48.12 8.22 ROSAT
4 2RXS J202244.7+411651 20 22 44.78 +41 16 51.96 12.52 ROSAT
5 1RXS J202245.4+413757 20 22 45.41 +41 37 57.00 14.58 ROSAT

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 CGPS J202336+412526 20 23 36.50 +41 25 27.12 1.30 CGPSNGPCAT
2 MITG J2023+4124 20 23 12.50 +41 24 52.92 3.52 MITGB6CM
3 NVSS J202308+412525 20 23 08.11 +41 25 24.96 4.19 NVSS
4 NVSS J202353+412417 20 23 53.81 +41 24 18.00 4.74 NVSS
5 MITG J2023+4130 20 23 21.19 +41 30 36.00 4.88 MITGB6CM
6 R37 20 23 58.10 +41 24 46.08 5.37 DIXON
7 NVSS J202301+412406 20 23 01.90 +41 24 06.84 5.64 NVSS
AMIGPS J202302+412345 20 23 02.59 +41 23 45.96 5.66 AMIGPS16GH
8 AMIGPS J202357+412331 20 23 57.41 +41 23 31.92 5.67 AMIGPS16GH
9 AMIGPS J202259+412546 20 22 59.59 +41 25 45.84 5.75 AMIGPS16GH
10 GB6 J2022+4124B 20 22 59.71 +41 24 52.92 5.84 GB6
11 NVSS J202311+413054 20 23 11.71 +41 30 55.08 5.99 NVSS
12 NVSS J202257+412636 20 22 57.31 +41 26 36.96 6.21 NVSS
13 NVSS J202402+412220 20 24 02.11 +41 22 21.00 7.01 NVSS
14 MITG J2024+4126 20 24 07.80 +41 26 39.12 7.07 MITGB6CM
15 MITG J2024+4129 20 24 05.11 +41 29 51.00 7.57 MITGB6CM
16 AMIGPS J202408+412912 20 24 08.50 +41 29 12.12 7.85 AMIGPS16GH
17 NVSS J202343+413423 20 23 43.39 +41 34 23.16 8.72 NVSS
18 NVSS J202357+413306 20 23 57.50 +41 33 06.84 8.73 NVSS
19 GPA 079.37+2.43 20 23 29.81 +41 34 50.88 8.83 GPA
20 MITG J2023+4134 20 23 50.90 +41 34 03.00 8.91 MITGB6CM
21 GB6 J2024+4129 20 24 16.70 +41 29 12.84 9.27 GB6
22 MITG J2023+4116 20 23 32.90 +41 16 42.96 9.32 MITGB6CM
23 NVSS J202404+411910 20 24 04.90 +41 19 09.84 9.45 NVSS
24 NVSS J202415+412150 20 24 15.41 +41 21 50.04 9.45 NVSS
AMIGPS J202343+413515 20 23 43.80 +41 35 16.08 9.58 AMIGPS16GH
25 HBMR10 20 22 39.79 +41 27 41.04 9.59 DIXON
26 R31 20 22 39.91 +41 23 40.92 9.71 DIXON
27 NVSS J202345+413525 20 23 45.19 +41 35 25.08 9.81 NVSS
28 NVSS J202411+411957 20 24 11.71 +41 19 57.00 9.87 NVSS
CGPS J202408+411907 20 24 07.99 +41 19 08.04 9.89 CGPSNGPCAT
29 NVSS J202407+411845 20 24 07.90 +41 18 46.08 10.13 NVSS
30 MITG J2023+4135 20 23 15.79 +41 35 51.00 10.19 MITGB6CM
31 NVSS J202255+413357 20 22 55.90 +41 33 56.88 10.21 NVSS
32 GB6 J2024+4120 20 24 15.70 +41 20 22.92 10.22 GB6
33 NVSS J202418+412055 20 24 18.00 +41 20 56.04 10.31 NVSS
34 GPA 079.26+2.16 20 24 18.50 +41 20 09.96 10.78 GPA
35 R41 20 23 39.70 +41 36 45.00 10.87 DIXON
36 NVSS J202301+413529 20 23 01.01 +41 35 30.12 10.94 NVSS
37 GB6 J2024+4124 20 24 29.11 +41 24 59.04 11.08 GB6
38 HIG09 20 22 41.11 +41 19 41.16 11.19 DIXON
LAH 09 20 22 41.11 +41 19 41.16 11.19 DIXON
39 GB6 J2023+4137 20 23 36.91 +41 37 14.16 11.28 GB6
40 NVSS J202420+411935 20 24 20.11 +41 19 35.04 11.35 NVSS
41 NVSS J202413+411748 20 24 13.01 +41 17 48.12 11.49 NVSS
MITG J2024+4119 20 24 21.79 +41 19 21.00 11.75 MITGB6CM
42 AMIGPS J202411+411710 20 24 11.59 +41 17 09.96 11.77 AMIGPS16GH
HIGG 08 20 23 36.70 +41 37 45.12 11.78 DIXON
43 YW29 20 22 51.60 +41 35 30.12 11.92 DIXON
44 NVSS J202337+413753 20 23 37.10 +41 37 53.04 11.93 NVSS
MITG J2023+4137 20 23 37.39 +41 37 54.12 11.95 MITGB6CM
45 MITG J2024+4130 20 24 29.81 +41 30 19.08 11.96 MITGB6CM
MITG J2024+4116 20 24 05.69 +41 16 05.16 11.96 MITGB6CM
46 NVSS J202434+412613 20 24 34.10 +41 26 12.84 11.96 NVSS
47 PCCS2 070 G079.41+02.46 20 23 28.61 +41 37 59.88 11.98 PCCS070GHZ
48 MITG J2022+4123 20 22 27.79 +41 23 08.16 12.06 MITGB6CM
49 NVSS J202256+411546 20 22 56.30 +41 15 47.16 12.07 NVSS
50 NVSS J202406+411601 20 24 06.41 +41 16 00.84 12.09 NVSS
51 NVSS J202432+412953 20 24 32.40 +41 29 53.16 12.26 NVSS
52 AMIGPS J202411+411542 20 24 10.99 +41 15 42.84 12.84 AMIGPS16GH
53 NVSS J202422+411617 20 24 22.20 +41 16 17.04 13.78 NVSS
54 NVSS J202432+413336 20 24 32.59 +41 33 36.00 13.93 NVSS
55 AMIGPS J202229+413423 20 22 29.81 +41 34 23.88 14.08 AMIGPS16GH
56 NVSS J202422+411424 20 24 22.30 +41 14 24.00 15.18 NVSS
57 NVSS J202227+411409 20 22 27.60 +41 14 08.88 16.71 NVSS

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