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 J2024.6+3747

Field

Detected Excesses
Swift-XRT image of the field for 3FGL J2024.6+3747 Swift-XRT detections in the field for 3FGL J2024.6+3747

Detected Excesses (SNR(Sosta) > 3.0)

# R.A. (J2000) Dec. (J2000) Pos. Error (") Rate (cts/s) Counts SNR (Detect) SNR (Sosta)
1 20 24 09.15 +37 31 32.81 4.67 (7.0 ± 1.2) x 10-3 43 6.166 5.751

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 25 08.01 +37 38 20.29 6.04 (1.8 ± 0.7) x 10-3 13 2.975 2.646
2 20 24 36.47 +37 43 38.28 6.78 (1.8 ± 0.7) x 10-3 13 2.548 2.552
3 20 24 06.18 +37 47 23.11 6.31 (1.3 ± 0.6) x 10-3 10 2.416 2.046

X-Ray and Gamma Ray Catalogs

More Catalogs
Swift-XRT image with known X-ray and gamma ray sources for 3FGL J2024.6+3747 Swift-XRT image with known radio, optical and UV sources for 3FGL J2024.6+3747

Known X-Ray and Gamma Ray Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Observatory/Database Table
1 4XMM J202447.9+374923 20 24 47.98 +37 49 23.52 2.05 XMM-NEWTON
2 4XMM J202432.4+374620 20 24 32.47 +37 46 21.00 2.29 XMM-NEWTON
3 4XMM J202450.9+374919 20 24 51.00 +37 49 19.92 2.43 XMM-NEWTON
4 4XMM J202429.1+374953 20 24 29.18 +37 49 53.76 3.19 XMM-NEWTON
5 4XMM J202425.9+375014 20 24 25.92 +37 50 14.64 3.91 XMM-NEWTON
6 4XMM J202429.0+374407 20 24 29.06 +37 44 08.16 4.41 XMM-NEWTON
7 4XMM J202441.0+375220 20 24 41.09 +37 52 20.28 4.53 XMM-NEWTON
8 4XMM J202430.6+375149 20 24 30.65 +37 51 49.68 4.54 XMM-NEWTON
9 4XMM J202500.0+375102 20 25 00.10 +37 51 02.88 4.91 XMM-NEWTON
10 4XMM J202416.3+374801 20 24 16.39 +37 48 01.80 4.94 XMM-NEWTON
11 4XMM J202509.1+374859 20 25 09.12 +37 48 59.40 5.61 XMM-NEWTON
12 4XMM J202411.7+374812 20 24 11.74 +37 48 12.60 5.87 XMM-NEWTON
13 4XMM J202501.9+375207 20 25 01.90 +37 52 07.32 5.92 XMM-NEWTON
14 4XMM J202435.9+374154 20 24 35.93 +37 41 54.60 6.00 XMM-NEWTON
15 4XMM J202513.0+374853 20 25 13.08 +37 48 53.64 6.36 XMM-NEWTON
16 4XMM J202502.0+375253 20 25 02.04 +37 52 53.76 6.52 XMM-NEWTON
17 4XMM J202409.8+375013 20 24 09.89 +37 50 13.20 6.67 XMM-NEWTON
18 4XMM J202441.8+375448 20 24 41.81 +37 54 48.96 7.01 XMM-NEWTON
19 4XMM J202405.4+374731 20 24 05.40 +37 47 31.20 7.11 XMM-NEWTON
20 4XMM J202405.2+374807 20 24 05.28 +37 48 06.84 7.14 XMM-NEWTON
21 4XMM J202410.7+374330 20 24 10.80 +37 43 30.00 7.42 XMM-NEWTON
22 4XMM J202410.2+375228 20 24 10.30 +37 52 28.20 7.71 XMM-NEWTON
23 4XMM J202404.2+374452 20 24 04.25 +37 44 52.80 7.90 XMM-NEWTON
24 4XMM J202501.8+375459 20 25 01.90 +37 54 59.76 8.25 XMM-NEWTON
25 4XMM J202401.0+375003 20 24 01.01 +37 50 03.12 8.28 XMM-NEWTON
26 4XMM J202406.1+374301 20 24 06.12 +37 43 00.84 8.46 XMM-NEWTON
27 4XMM J202442.5+375645 20 24 42.60 +37 56 45.60 8.95 XMM-NEWTON
28 4XMM J202355.7+374630 20 23 55.75 +37 46 30.36 9.11 XMM-NEWTON
29 4XMM J202401.1+374315 20 24 01.13 +37 43 15.60 9.16 XMM-NEWTON
30 4XMM J202422.9+375631 20 24 22.94 +37 56 31.20 9.44 XMM-NEWTON
31 4XMM J202411.1+374026 20 24 11.11 +37 40 26.04 9.50 XMM-NEWTON
32 4XMM J202353.5+375004 20 23 53.57 +37 50 04.20 9.71 XMM-NEWTON
33 4XMM J202447.2+375733 20 24 47.21 +37 57 33.48 9.82 XMM-NEWTON
34 4XMM J202418.8+375637 20 24 18.86 +37 56 36.96 9.87 XMM-NEWTON
35 4XMM J202459.7+375728 20 24 59.76 +37 57 28.80 10.33 XMM-NEWTON
36 4XMM J202352.1+374320 20 23 52.13 +37 43 20.64 10.71 XMM-NEWTON
37 4XMM J202343.8+374532 20 23 43.90 +37 45 32.40 11.58 XMM-NEWTON
38 4XMM J202431.4+375928 20 24 31.46 +37 59 28.32 11.83 XMM-NEWTON
39 4XMM J202352.0+375451 20 23 52.01 +37 54 51.48 12.03 XMM-NEWTON
40 4XMM J202342.7+374318 20 23 42.79 +37 43 18.84 12.42 XMM-NEWTON
41 4XMM J202418.7+375934 20 24 18.74 +37 59 34.80 12.59 XMM-NEWTON
42 4XMM J202402.8+375812 20 24 02.83 +37 58 12.72 12.89 XMM-NEWTON
43 4XMM J202342.8+375358 20 23 42.82 +37 53 58.20 13.10 XMM-NEWTON
44 4XMM J202355.6+373813 20 23 55.68 +37 38 13.56 13.17 XMM-NEWTON
45 4XMM J202401.0+373700 20 24 01.01 +37 37 00.84 13.43 XMM-NEWTON
46 4XMM J202356.2+373717 20 23 56.23 +37 37 17.04 13.80 XMM-NEWTON

Known Radio, Optical and UV Sources

# Source Name R.A. (J2000) Dec. (J2000) Offset (') Database Table
1 NVSS J202413+374540 20 24 13.70 +37 45 41.04 5.86 NVSS
WSRTGP 2022+3733 20 24 04.70 +37 42 59.04 8.71 WSRTGP
2 NVSS J202404+374300 20 24 04.39 +37 43 00.12 8.74 NVSS
CGPS J202404+374300 20 24 04.30 +37 43 00.84 8.76 CGPSNGPCAT
WN 2022.2+3733 20 24 04.20 +37 42 59.04 8.79 WENSS
TGSSADR J202404.1+374258 20 24 04.20 +37 42 59.04 8.80 GMRTAS150M
TXS 2022+375 20 24 04.01 +37 43 00.12 8.81 TEXAS
3 NVSS J202455+375741 20 24 55.70 +37 57 41.04 10.27 NVSS
[WBH2005] G76.568+0.123 20 24 55.30 +37 57 43.92 10.31 WBHGP20CM
4 [WBH2005] G76.396+0.242 20 23 55.51 +37 53 22.92 10.64 WBHGP20CM
5 NVSS J202400+373839 20 24 01.01 +37 38 39.12 12.15 NVSS
6 WDS J20257+3745 20 25 42.00 +37 45 00.00 12.31 WDS
7 MITG J2023+3738b 20 23 56.30 +37 38 58.92 12.54 MITGB6CM
MITG J2023+3738a 20 23 55.01 +37 38 51.00 12.82 MITGB6CM
2022+3728 20 23 56.90 +37 38 26.88 12.84 NORTH6CM
WSRTGP 2022+3728 20 23 57.19 +37 38 17.88 12.92 WSRTGP
GB6 J2023+3738 20 23 57.00 +37 38 15.00 12.98 GB6
WN 2022.0+3728 20 23 55.90 +37 38 11.04 13.18 WENSS
CGPS J202355+373813 20 23 55.51 +37 38 13.92 13.19 CGPSNGPCAT
8 NVSS J202355+373812 20 23 55.20 +37 38 12.12 13.25 NVSS
[WBH2005] G76.188+0.098 20 23 55.10 +37 38 09.96 13.30 WBHGP20CM
9 NVSS J202341+374127 20 23 40.99 +37 41 27.96 13.52 NVSS
10 NVSS J202531+375800 20 25 31.39 +37 58 00.84 14.20 NVSS
11 HIP 100577 20 23 47.09 +37 58 58.08 15.47 HIPPARCOS
HD 194356 20 23 47.09 +37 58 58.08 15.47 HIC
BD+37 3918 20 23 47.11 +37 58 58.08 15.47 ACRS
PPM 84858 20 23 47.09 +37 58 58.08 15.47 PPM
SAO 69953 20 23 47.04 +37 58 57.72 15.47 SAO

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