Database: Ace Shock Analysis
Event ID: 20092031016
Observation time: 07/22/2009 203.42802 1016 [UT]
|
|
General
Information (About, Top)
| Year |
2009 |
| Fractional day of year |
203.428022 |
| Arrival time of shock [seconds of day] |
36981.1 ± 20.0 |
| Shock type |
FR |
| Electron data availability |
0 |
X GSE location of spacecraft [Re] |
232.556 |
| Y GSE location of spacecraft [Re] |
38.200 |
| Z GSE location of spacecraft [Re] |
17.506 |
| Upstream plasma points selected for analysis |
0002 |
| Upstream field points selected for analysis |
0112 |
| Downstream plasma points selected for analysis |
0003
|
| Downstream field points selected for analysis |
0187 |
| Minimum chisq/dof for RH8,RH9,RH10 |
-261.06, -189.24, -143.37 |
Event added to database
|
Wed Oct 15 09:52:13 2014
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Event last processed
|
Wed Oct 15 11:12:05 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
-0.429 ± 49.077
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-423.9 ± 2.3 |
-464.2 ± 2.6 |
| Vy GSE [km/s] |
37.5 ± 3.2 |
32.5 ± 4.9 |
| Vz GSE [km/s] |
1.4 ± 7.4 |
-9.6 ± 1.9 |
| Wi [km/s] |
55.6 ± 1.3 |
48.5 ± 1.9 |
| We [km/s] |
1757.3 ± 41.4 |
1533.3 ± 59.4 |
| Ni [n/cc] |
7.3 ± 0.7 |
4.1 ± 0.4 |
| Bx GSE [nT] |
1.9 ± 0.3 |
1.8 ± 0.1 |
| By GSE [nT] |
-7.8 ± 1.2 |
-5.2 ± 0.3 |
| Bz GSE [nT] |
-1.4 ± 0.5 |
-2.0 ± 0.4 |
Plasma Beta
|
0.718 ± 0.790
|
0.581 ± 0.601
|
Sound Speed [km/s]
|
71.74 ± 1.69
|
62.60 ± 2.43
|
Alfven Speed [km/s]
|
65.87 ± 6.18
|
63.71 ± 4.49
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.590 ± 0.204 |
0.231 ± 0.166 |
0.774 ± 0.560 |
50.68 ± 15.58 |
158.61 ± 14.34 |
| VC |
-0.960 ± 0.035 |
-0.118 ± 0.118 |
-0.255 ± 0.249 |
-14.76 ± 7.30 |
187.01 ± 7.06 |
| MX1 |
-0.972 ± 0.035 |
-0.032 ± 0.156 |
-0.232 ± 0.228 |
-13.44 ± 8.55 |
181.89 ± 9.20 |
| MX2 |
-0.976 ± 0.035 |
-0.028 ± 0.157 |
-0.217 ± 0.213 |
-12.53 ± 9.24 |
181.64 ± 9.23 |
| MX3 |
-0.963 ± 0.034 |
-0.039 ± 0.154 |
-0.266 ± 0.260 |
-15.44 ± 7.10 |
182.32 ± 9.16 |
| RH08 |
-0.091 ± 0.070 |
0.828 ± 0.039 |
-0.553 ± 0.488 |
-33.58 ± 3.97 |
96.27 ± 4.84 |
| RH09 |
-0.074 ± 0.028 |
0.806 ± 0.021 |
-0.587 ± 0.508 |
-35.92 ± 2.00 |
95.26 ± 2.00 |
| RH10 |
-0.060 ± 0.028 |
0.799 ± 0.021 |
-0.598 ± 0.514 |
-36.71 ± 2.00 |
94.26 ± 2.00 |
| Average |
-0.586 |
0.306 |
-0.242 |
-13.962 |
147.157 |
| Median |
-0.590 |
0.231 |
-0.255 |
-14.759 |
181.635 |
| Deviation |
0.442 |
0.430 |
0.443 |
28.202 |
43.804 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
60.6 ± 4.0 |
249.9 ± 5.8 |
0.55 ± 0.02 |
| VC |
86.5 ± 1.2 |
342.7 ± 5.0 |
0.55 ± 0.02 |
| MX1 |
81.4 ± 1.2 |
352.5 ± 4.8 |
0.55 ± 0.02 |
| MX2 |
81.0 ± 1.2 |
354.6 ± 4.8 |
0.55 ± 0.02 |
| MX3 |
82.3 ± 1.4 |
347.8 ± 4.8 |
0.55 ± 0.02 |
| RH08 |
44.2 ± 4.8 |
62.2 ± 1.3 |
0.55 ± 0.02 |
| RH09 |
46.6 ± 4.8 |
54.1 ± 1.4 |
0.55 ± 0.02 |
| RH10 |
47.6 ± 4.8 |
48.0 ± 3.4 |
0.55 ± 0.02 |
| Average |
66.3 |
226.5 |
0.55 |
| Median |
81.0 |
342.7 |
0.55 |
| Deviation |
18.4 |
146.2 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-10.0 ± 5.1 |
24.6 ± 1.5 |
32.3 ± 3.0 |
94.3 ± 5.2 |
-0.40 ± 0.18 |
-0.10 ± 0.05 |
| VC |
-59.4 ± 4.4 |
2.9 ± 0.2 |
4.0 ± 0.4 |
97.4 ± 5.4 |
-20.37 ± 2.77 |
-0.61 ± 0.08 |
| MX1 |
-58.0 ± 4.0 |
7.3 ± 0.4 |
9.8 ± 0.9 |
97.2 ± 5.4 |
-8.03 ± 1.05 |
-0.60 ± 0.07 |
| MX2 |
-57.7 ± 3.9 |
7.6 ± 0.5 |
10.3 ± 1.0 |
97.1 ± 5.4 |
-7.60 ± 0.98 |
-0.60 ± 0.07 |
| MX3 |
-58.6 ± 4.3 |
6.5 ± 0.4 |
8.9 ± 0.8 |
97.2 ± 5.4 |
-9.01 ± 1.21 |
-0.61 ± 0.08 |
| RH8 |
-6.6 ± 1.6 |
37.7 ± 2.4 |
47.2 ± 4.4 |
89.8 ± 4.9 |
-0.18 ± 0.05 |
-0.07 ± 0.02 |
| RH9 |
-6.8 ± 1.9 |
35.8 ± 2.2 |
45.2 ± 4.2 |
90.6 ± 4.9 |
-0.19 ± 0.06 |
-0.08 ± 0.02 |
| RH10 |
-6.4 ± 2.0 |
35.0 ± 2.2 |
44.4 ± 4.2 |
90.9 ± 5.0 |
-0.18 ± 0.07 |
-0.07 ± 0.03 |
| Average |
-32.9 |
19.7 |
25.3 |
94.3 |
-5.7 |
-0.3 |
| Median |
-10.0 |
24.6 |
32.3 |
97.1 |
-0.4 |
-0.1 |
| Deviation |
27.3 |
15.1 |
18.8 |
3.4 |
7.1 |
0.3 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
-24.1 ± 3.8 |
22.7 ± 1.2 |
31.3 ± 2.2 |
86.4 ± 4.8 |
-1.06 ± 0.13 |
-0.28 ± 0.03 |
| VC |
-101.5 ± 1.9 |
2.7 ± 0.1 |
3.8 ± 0.3 |
89.3 ± 4.9 |
-37.72 ± 2.02 |
-1.14 ± 0.06 |
| MX1 |
-99.9 ± 2.1 |
6.7 ± 0.4 |
9.5 ± 0.7 |
89.1 ± 4.9 |
-14.98 ± 0.74 |
-1.12 ± 0.06 |
| MX2 |
-99.6 ± 2.1 |
7.0 ± 0.4 |
10.0 ± 0.7 |
89.0 ± 4.9 |
-14.21 ± 0.70 |
-1.12 ± 0.06 |
| MX3 |
-100.6 ± 2.0 |
6.0 ± 0.3 |
8.6 ± 0.6 |
89.1 ± 4.9 |
-16.74 ± 0.84 |
-1.13 ± 0.06 |
| RH8 |
-12.3 ± 3.4 |
34.7 ± 1.9 |
45.7 ± 3.2 |
82.3 ± 4.5 |
-0.35 ± 0.08 |
-0.15 ± 0.03 |
| RH9 |
-12.3 ± 3.2 |
33.0 ± 1.8 |
43.7 ± 3.1 |
83.0 ± 4.6 |
-0.37 ± 0.08 |
-0.15 ± 0.03 |
| RH10 |
-11.4 ± 3.2 |
32.3 ± 1.7 |
43.0 ± 3.0 |
83.3 ± 4.6 |
-0.35 ± 0.08 |
-0.14 ± 0.03 |
| Average |
-57.7 |
18.1 |
24.4 |
86.4 |
-10.7 |
-0.7 |
| Median |
-24.1 |
22.7 |
31.3 |
89.0 |
-1.1 |
-0.3 |
| Deviation |
45.8 |
13.9 |
18.2 |
3.1 |
13.2 |
0.5 |
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)
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