Database: Ace Shock Analysis
Event ID: 20041150809
Observation time: 04/24/2004 115.33996 0809 [UT]
|
|
General
Information (About, Top)
| Year |
2004 |
| Fractional day of year |
115.339961 |
| Arrival time of shock [seconds of day] |
29372.6 ± 10.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
237.178 |
| Y GSE location of spacecraft [Re] |
40.602 |
| Z GSE location of spacecraft [Re] |
-21.200 |
| Upstream plasma points selected for analysis |
0005 |
| Upstream field points selected for analysis |
0339 |
| Downstream plasma points selected for analysis |
0004
|
| Downstream field points selected for analysis |
0277 |
| Minimum chisq/dof for RH8,RH9,RH10 |
3.42, 4.18, 4.60 |
Event added to database
|
Wed Oct 15 10:27:17 2014
|
Event last processed
|
Wed Oct 15 11:22:13 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
48.351 ± 0.795
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-431.7 ± 7.1 |
-468.2 ± 4.1 |
| Vy GSE [km/s] |
-38.6 ± 25.2 |
-61.0 ± 5.9 |
| Vz GSE [km/s] |
13.6 ± 14.2 |
-6.6 ± 13.0 |
| Wi [km/s] |
34.3 ± 2.1 |
39.4 ± 1.5 |
| We [km/s] |
1085.0 ± 67.3 |
1247.4 ± 46.0 |
| Ni [n/cc] |
5.0 ± 0.5 |
8.2 ± 0.9 |
| Bx GSE [nT] |
-2.4 ± 0.8 |
-3.7 ± 0.3 |
| By GSE [nT] |
3.7 ± 2.6 |
8.1 ± 0.3 |
| Bz GSE [nT] |
-0.1 ± 2.6 |
4.1 ± 1.6 |
Plasma Beta
|
0.438 ± 0.326
|
0.278 ± 0.301
|
Sound Speed [km/s]
|
44.30 ± 2.75
|
50.92 ± 1.88
|
Alfven Speed [km/s]
|
53.85 ± 7.73
|
75.39 ± 5.34
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.955 ± 0.171 |
0.045 ± 0.946 |
-0.293 ± 0.285 |
-17.06 ± 32.27 |
177.31 ± 56.76 |
| VC |
-0.841 ± 0.163 |
-0.413 ± 0.285 |
-0.349 ± 0.334 |
-20.44 ± 15.81 |
206.14 ± 19.19 |
| MX1 |
-0.933 ± 0.103 |
0.084 ± 0.521 |
-0.349 ± 0.334 |
-20.40 ± 15.16 |
174.84 ± 31.95 |
| MX2 |
-0.971 ± 0.056 |
-0.130 ± 0.297 |
-0.200 ± 0.197 |
-11.53 ± 11.52 |
187.60 ± 17.54 |
| MX3 |
-0.968 ± 0.066 |
-0.227 ± 0.255 |
-0.107 ± 0.107 |
-6.16 ± 15.52 |
193.22 ± 15.08 |
| RH08 |
-0.994 ± 0.005 |
0.009 ± 0.036 |
0.106 ± 0.106 |
6.09 ± 2.59 |
179.50 ± 2.07 |
| RH09 |
-0.994 ± 0.008 |
0.026 ± 0.066 |
0.106 ± 0.106 |
6.09 ± 4.00 |
178.50 ± 3.83 |
| RH10 |
-0.994 ± 0.008 |
0.026 ± 0.069 |
0.106 ± 0.106 |
6.09 ± 4.01 |
178.50 ± 4.01 |
| Average |
-0.956 |
-0.072 |
-0.123 |
-7.165 |
184.450 |
| Median |
-0.968 |
0.026 |
-0.107 |
-6.162 |
179.499 |
| Deviation |
0.051 |
0.172 |
0.205 |
11.933 |
10.662 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
61.0 ± 19.2 |
507.3 ± 12.0 |
1.71 ± 0.16 |
| VC |
82.3 ± 29.8 |
492.5 ± 18.7 |
1.71 ± 0.16 |
| MX1 |
59.6 ± 20.0 |
495.8 ± 12.1 |
1.71 ± 0.16 |
| MX2 |
68.3 ± 19.8 |
535.0 ± 13.3 |
1.71 ± 0.16 |
| MX3 |
72.8 ± 18.8 |
533.8 ± 13.5 |
1.71 ± 0.16 |
| RH08 |
63.2 ± 9.6 |
518.8 ± 7.2 |
1.71 ± 0.16 |
| RH09 |
62.5 ± 9.5 |
517.6 ± 6.9 |
1.71 ± 0.16 |
| RH10 |
62.5 ± 9.5 |
517.6 ± 30.1 |
1.71 ± 0.16 |
| Average |
66.5 |
514.8 |
1.71 |
| Median |
63.2 |
517.6 |
1.71 |
| Deviation |
7.7 |
15.7 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
100.8 ± 9.0 |
16.9 ± 0.9 |
26.1 ± 3.7 |
67.9 ± 5.0 |
5.96 ± 0.37 |
1.49 ± 0.11 |
| VC |
118.1 ± 18.5 |
4.5 ± 0.3 |
7.2 ± 1.0 |
69.8 ± 5.1 |
25.93 ± 3.32 |
1.69 ± 0.25 |
| MX1 |
100.8 ± 8.8 |
17.7 ± 1.0 |
27.3 ± 3.9 |
67.7 ± 5.0 |
5.69 ± 0.36 |
1.49 ± 0.11 |
| MX2 |
113.4 ± 11.0 |
12.7 ± 0.7 |
19.9 ± 2.9 |
68.8 ± 5.0 |
8.91 ± 0.61 |
1.65 ± 0.14 |
| MX3 |
108.7 ± 11.7 |
10.1 ± 0.6 |
15.9 ± 2.3 |
69.2 ± 5.1 |
10.75 ± 0.84 |
1.57 ± 0.15 |
| RH8 |
88.5 ± 6.3 |
15.7 ± 0.9 |
24.3 ± 3.5 |
68.2 ± 5.0 |
5.65 ± 0.28 |
1.30 ± 0.06 |
| RH9 |
88.1 ± 6.3 |
16.1 ± 0.9 |
24.9 ± 3.6 |
68.1 ± 5.0 |
5.48 ± 0.28 |
1.30 ± 0.06 |
| RH10 |
88.1 ± 6.3 |
16.1 ± 0.9 |
24.9 ± 3.6 |
68.1 ± 5.0 |
5.48 ± 0.28 |
1.30 ± 0.06 |
| Average |
100.8 |
13.7 |
21.3 |
68.5 |
9.2 |
1.5 |
| Median |
100.8 |
16.1 |
24.9 |
68.2 |
6.0 |
1.5 |
| Deviation |
11.9 |
4.5 |
6.8 |
0.7 |
7.0 |
0.2 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
61.0 ± 7.9 |
21.0 ± 0.6 |
36.5 ± 2.6 |
88.6 ± 4.2 |
2.92 ± 0.45 |
0.69 ± 0.12 |
| VC |
71.1 ± 5.7 |
5.7 ± 0.2 |
10.1 ± 0.7 |
90.9 ± 4.1 |
12.60 ± 1.34 |
0.79 ± 0.10 |
| MX1 |
61.6 ± 8.8 |
22.0 ± 0.6 |
38.1 ± 2.7 |
88.3 ± 4.2 |
2.81 ± 0.47 |
0.70 ± 0.13 |
| MX2 |
71.0 ± 5.8 |
15.8 ± 0.4 |
27.9 ± 2.0 |
89.7 ± 4.1 |
4.51 ± 0.49 |
0.80 ± 0.10 |
| MX3 |
66.1 ± 4.1 |
12.5 ± 0.4 |
22.2 ± 1.6 |
90.2 ± 4.1 |
5.28 ± 0.47 |
0.74 ± 0.08 |
| RH8 |
54.5 ± 2.8 |
19.4 ± 0.5 |
34.0 ± 2.4 |
88.9 ± 4.2 |
2.81 ± 0.22 |
0.61 ± 0.06 |
| RH9 |
54.6 ± 2.8 |
20.0 ± 0.6 |
34.9 ± 2.5 |
88.8 ± 4.2 |
2.74 ± 0.21 |
0.62 ± 0.06 |
| RH10 |
54.6 ± 2.8 |
20.0 ± 0.6 |
34.9 ± 2.5 |
88.8 ± 4.2 |
2.74 ± 0.21 |
0.62 ± 0.06 |
| Average |
61.8 |
17.0 |
29.8 |
89.3 |
4.5 |
0.7 |
| Median |
61.6 |
20.0 |
34.9 |
88.9 |
2.9 |
0.7 |
| Deviation |
7.1 |
5.5 |
9.5 |
0.9 |
3.4 |
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 Mon Apr 13 08:55:21 2009
Michael L Stevens
(mstevens@cfa.harvard.edu)
| 
