Database: Wind Shock Analysis
Event ID: 20211371552
Observation time: 05/17/2021 137.66172 1552 [UT]
|
|
General
Information (About, Top)
| Year |
2021 |
| Fractional day of year |
137.661719 |
| Arrival time of shock [seconds of day] |
57172.5 ± 20.0 |
| Shock type |
FF |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
202.017 |
| Y GSE location of spacecraft [Re] |
52.654 |
| Z GSE location of spacecraft [Re] |
-9.034 |
| Upstream plasma points selected for analysis |
0008 |
| Upstream field points selected for analysis |
0262 |
| Downstream plasma points selected for analysis |
0003
|
| Downstream field points selected for analysis |
0164 |
| Minimum chisq/dof for RH8,RH9,RH10 |
12.06, 19.64, 21.38 |
Event added to database
|
Thu Jan 13 10:16:46 2022
|
Event last processed
|
Fri Jan 14 11:34:43 2022
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
54.098 ± 2.256
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-333.2 ± 0.8 |
-360.6 ± 0.7 |
| Vy GSE [km/s] |
-23.1 ± 2.3 |
-35.3 ± 1.8 |
| Vz GSE [km/s] |
-13.9 ± 3.1 |
5.0 ± 0.7 |
| Wi [km/s] |
19.7 ± 1.1 |
23.5 ± 0.8 |
| We [km/s] |
622.7 ± 35.3 |
741.7 ± 25.3 |
| Ni [n/cc] |
5.6 ± 0.3 |
10.0 ± 0.5 |
| Bx GSE [nT] |
2.7 ± 0.2 |
4.3 ± 0.8 |
| By GSE [nT] |
-4.2 ± 0.1 |
-6.2 ± 1.1 |
| Bz GSE [nT] |
0.6 ± 0.2 |
1.4 ± 1.1 |
Plasma Beta
|
0.176 ± 0.171
|
0.190 ± 0.190
|
Sound Speed [km/s]
|
25.42 ± 1.44
|
30.28 ± 1.03
|
Alfven Speed [km/s]
|
47.03 ± 1.91
|
53.84 ± 0.76
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.918 ± 0.357 |
-0.332 ± 0.924 |
-0.219 ± 0.216 |
-12.67 ± 35.27 |
199.88 ± 57.62 |
| VC |
-0.776 ± 0.047 |
-0.344 ± 0.072 |
0.528 ± 0.473 |
31.89 ± 4.25 |
203.89 ± 5.17 |
| MX1 |
-0.758 ± 0.088 |
-0.381 ± 0.163 |
0.530 ± 0.474 |
31.99 ± 3.97 |
206.67 ± 12.27 |
| MX2 |
-0.755 ± 0.079 |
-0.368 ± 0.146 |
0.543 ± 0.482 |
32.90 ± 4.12 |
205.96 ± 10.97 |
| MX3 |
-0.751 ± 0.074 |
-0.349 ± 0.128 |
0.560 ± 0.492 |
34.05 ± 5.18 |
204.92 ± 9.59 |
| RH08 |
-0.957 ± 0.007 |
-0.178 ± 0.028 |
0.229 ± 0.225 |
13.24 ± 1.36 |
190.53 ± 1.67 |
| RH09 |
-0.982 ± 0.013 |
-0.147 ± 0.070 |
0.117 ± 0.117 |
6.74 ± 4.01 |
188.52 ± 4.07 |
| RH10 |
-0.982 ± 0.013 |
-0.147 ± 0.070 |
0.117 ± 0.117 |
6.74 ± 4.01 |
188.52 ± 4.07 |
| Average |
-0.860 |
-0.281 |
0.301 |
18.111 |
198.612 |
| Median |
-0.776 |
-0.332 |
0.528 |
31.890 |
203.894 |
| Deviation |
0.109 |
0.104 |
0.286 |
17.260 |
8.081 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
76.2 ± 2.7 |
374.5 ± 1.1 |
1.86 ± 0.11 |
| VC |
86.3 ± 3.0 |
340.8 ± 1.5 |
1.86 ± 0.11 |
| MX1 |
88.7 ± 3.0 |
335.6 ± 1.5 |
1.86 ± 0.11 |
| MX2 |
88.2 ± 3.0 |
334.0 ± 1.5 |
1.86 ± 0.11 |
| MX3 |
87.6 ± 3.0 |
332.0 ± 1.5 |
1.86 ± 0.11 |
| RH08 |
70.4 ± 2.9 |
395.0 ± 1.3 |
1.86 ± 0.11 |
| RH09 |
67.2 ± 2.9 |
400.3 ± 1.3 |
1.86 ± 0.11 |
| RH10 |
67.2 ± 2.9 |
400.3 ± 6.0 |
1.86 ± 0.11 |
| Average |
79.0 |
364.1 |
1.86 |
| Median |
86.3 |
374.5 |
1.86 |
| Deviation |
9.8 |
31.6 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
58.1 ± 1.0 |
5.4 ± 0.2 |
11.2 ± 0.5 |
53.2 ± 1.9 |
10.85 ± 0.57 |
1.09 ± 0.05 |
| VC |
81.6 ± 1.8 |
1.4 ± 0.1 |
3.0 ± 0.1 |
53.5 ± 1.9 |
57.26 ± 1.75 |
1.53 ± 0.03 |
| MX1 |
81.6 ± 1.9 |
0.5 ± 0.0 |
1.1 ± 0.0 |
53.5 ± 1.9 |
158.68 ± 4.77 |
1.53 ± 0.03 |
| MX2 |
81.5 ± 1.9 |
0.7 ± 0.0 |
1.5 ± 0.1 |
53.5 ± 1.9 |
118.40 ± 3.55 |
1.53 ± 0.03 |
| MX3 |
81.4 ± 2.0 |
0.9 ± 0.0 |
2.0 ± 0.1 |
53.5 ± 1.9 |
85.89 ± 2.58 |
1.52 ± 0.03 |
| RH8 |
75.2 ± 0.7 |
7.6 ± 0.4 |
15.8 ± 0.6 |
52.9 ± 1.9 |
9.97 ± 0.40 |
1.42 ± 0.04 |
| RH9 |
71.3 ± 0.5 |
8.8 ± 0.4 |
18.2 ± 0.7 |
52.8 ± 1.9 |
8.14 ± 0.36 |
1.35 ± 0.05 |
| RH10 |
71.3 ± 0.5 |
8.8 ± 0.4 |
18.2 ± 0.7 |
52.8 ± 1.9 |
8.14 ± 0.36 |
1.35 ± 0.05 |
| Average |
75.2 |
4.3 |
8.9 |
53.2 |
57.2 |
1.4 |
| Median |
81.4 |
5.4 |
11.2 |
53.5 |
57.3 |
1.5 |
| Deviation |
8.3 |
3.8 |
7.8 |
0.3 |
58.6 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
33.0 ± 0.5 |
6.3 ± 0.2 |
12.9 ± 0.2 |
61.5 ± 1.1 |
5.21 ± 0.19 |
0.54 ± 0.01 |
| VC |
46.1 ± 0.3 |
1.7 ± 0.0 |
3.4 ± 0.0 |
61.8 ± 1.1 |
27.36 ± 0.59 |
0.75 ± 0.01 |
| MX1 |
46.1 ± 0.4 |
0.6 ± 0.0 |
1.2 ± 0.0 |
61.8 ± 1.1 |
75.89 ± 1.51 |
0.75 ± 0.01 |
| MX2 |
46.0 ± 0.4 |
0.8 ± 0.0 |
1.7 ± 0.0 |
61.8 ± 1.1 |
56.57 ± 1.14 |
0.75 ± 0.01 |
| MX3 |
45.9 ± 0.3 |
1.1 ± 0.0 |
2.3 ± 0.0 |
61.8 ± 1.1 |
40.98 ± 0.84 |
0.74 ± 0.01 |
| RH8 |
42.5 ± 0.2 |
8.9 ± 0.3 |
18.0 ± 0.3 |
61.1 ± 1.1 |
4.76 ± 0.16 |
0.69 ± 0.02 |
| RH9 |
40.3 ± 0.4 |
10.4 ± 0.3 |
20.9 ± 0.3 |
60.9 ± 1.1 |
3.89 ± 0.14 |
0.66 ± 0.02 |
| RH10 |
40.3 ± 0.4 |
10.4 ± 0.3 |
20.9 ± 0.3 |
60.9 ± 1.1 |
3.89 ± 0.14 |
0.66 ± 0.02 |
| Average |
42.5 |
5.0 |
10.2 |
61.4 |
27.3 |
0.7 |
| Median |
45.9 |
6.3 |
12.9 |
61.8 |
27.4 |
0.7 |
| Deviation |
4.6 |
4.4 |
8.9 |
0.4 |
28.0 |
0.1 |
Survey interval (About, Top)
Selected
data (About, Top)
|
Key plasma parameters
|
Velocity
|
Magnetic Field
|
Simple
Methods
(About, Top)
Rankine Chi^2
Contour (About, Top)
Shock
Speed (About, Top)
Theta Bn (About, Top)
Mach Numbers (About, Top)
Page updated Fri Jan 14 13:39:51 2022
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
