Database: Ace Shock Analysis
Event ID: 20072701053
Observation time: 09/27/2007 270.45360 1053 [UT]
|
|
General
Information (About, Top)
| Year |
2007 |
| Fractional day of year |
270.453595 |
| Arrival time of shock [seconds of day] |
39190.6 ± 60.0 |
| Shock type |
FF |
| Electron data availability |
0 |
| X GSE location of spacecraft [Re] |
242.923 |
| Y GSE location of spacecraft [Re] |
23.590 |
| Z GSE location of spacecraft [Re] |
-23.223 |
| Upstream plasma points selected for analysis |
0012 |
| Upstream field points selected for analysis |
0781 |
| Downstream plasma points selected for analysis |
0013
|
| Downstream field points selected for analysis |
0781 |
| Minimum chisq/dof for RH8,RH9,RH10 |
3.29, 5.37, 5.42 |
Event added to database
|
Tue Oct 14 16:07:57 2014
|
Event last processed
|
Wed Oct 15 12:46:26 2014
|
Method selected
|
RH08
|
Propagation delay to Earth [minutes]
|
60.560 ± 0.201
|
Asymptotic
plasma
parameters (About, Top)
|
Parameter
|
Upstream
|
Downstream
|
| Vx GSE [km/s] |
-376.9 ± 1.6 |
-409.0 ± 1.4 |
| Vy GSE [km/s] |
-35.5 ± 1.4 |
-33.1 ± 2.0 |
| Vz GSE [km/s] |
6.6 ± 1.3 |
22.2 ± 2.1 |
| Wi [km/s] |
21.2 ± 1.3 |
25.5 ± 1.9 |
| We [km/s] |
669.6 ± 40.2 |
806.9 ± 60.1 |
| Ni [n/cc] |
4.0 ± 0.6 |
11.3 ± 0.5 |
| Bx GSE [nT] |
2.7 ± 0.1 |
3.1 ± 0.5 |
| By GSE [nT] |
0.2 ± 0.2 |
-0.4 ± 1.3 |
| Bz GSE [nT] |
1.6 ± 0.2 |
3.9 ± 0.2 |
Plasma Beta
|
0.364 ± 0.383
|
0.576 ± 0.582
|
Sound Speed [km/s]
|
27.34 ± 1.64
|
32.94 ± 2.46
|
Alfven Speed [km/s]
|
35.27 ± 2.97
|
33.62 ± 1.17
|
Best values of
shock
front normal for each method (About, Top)
| Method |
Nx |
Ny |
Nz |
Theta [degrees] |
Phi [degrees] |
| MC |
-0.999 ± 0.013 |
-0.046 ± 0.261 |
0.017 ± 0.017 |
0.96 ± 17.20 |
182.66 ± 14.95 |
| VC |
-0.898 ± 0.029 |
0.068 ± 0.066 |
0.435 ± 0.405 |
25.79 ± 3.76 |
175.67 ± 4.22 |
| MX1 |
-0.991 ± 0.031 |
0.026 ± 0.064 |
0.128 ± 0.127 |
7.36 ± 13.90 |
178.49 ± 3.67 |
| MX2 |
-0.971 ± 0.030 |
0.106 ± 0.082 |
0.215 ± 0.212 |
12.42 ± 7.66 |
173.77 ± 4.86 |
| MX3 |
-0.956 ± 0.031 |
0.145 ± 0.124 |
0.256 ± 0.250 |
14.83 ± 5.46 |
171.35 ± 7.42 |
| RH08 |
-0.998 ± 0.001 |
-0.009 ± 0.012 |
0.061 ± 0.061 |
3.52 ± 0.63 |
180.50 ± 0.69 |
| RH09 |
-0.997 ± 0.005 |
-0.009 ± 0.069 |
0.073 ± 0.072 |
4.16 ± 4.03 |
180.50 ± 3.95 |
| RH10 |
-0.997 ± 0.005 |
0.009 ± 0.069 |
0.073 ± 0.072 |
4.16 ± 4.03 |
179.50 ± 3.95 |
| Average |
-0.976 |
0.036 |
0.157 |
9.152 |
177.806 |
| Median |
-0.991 |
0.026 |
0.128 |
7.364 |
179.499 |
| Deviation |
0.035 |
0.065 |
0.139 |
8.206 |
3.852 |
Key shock
parameters (About, Top)
| Method |
ThetaBn |
Shock Speed |
Compression |
| MC |
31.8 ± 1.9 |
427.6 ± 0.4 |
2.89 ± 0.44 |
| VC |
57.1 ± 1.6 |
394.0 ± 0.4 |
2.89 ± 0.44 |
| MX1 |
38.6 ± 1.6 |
425.4 ± 0.4 |
2.89 ± 0.44 |
| MX2 |
44.3 ± 1.4 |
417.0 ± 0.4 |
2.89 ± 0.44 |
| MX3 |
47.2 ± 1.3 |
410.4 ± 0.4 |
2.89 ± 0.44 |
| RH08 |
34.5 ± 1.8 |
427.3 ± 0.4 |
2.89 ± 0.44 |
| RH09 |
35.2 ± 1.8 |
427.2 ± 0.4 |
2.89 ± 0.44 |
| RH10 |
35.3 ± 1.7 |
426.7 ± 4.6 |
2.89 ± 0.44 |
| Average |
40.5 |
419.5 |
2.89 |
| Median |
38.6 |
426.7 |
2.89 |
| Deviation |
8.5 |
12.0 |
0.00 |
Upstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
49.4 ± 1.7 |
20.7 ± 1.3 |
30.0 ± 2.5 |
39.6 ± 2.9 |
2.39 ± 0.09 |
1.25 ± 0.07 |
| VC |
55.2 ± 1.7 |
12.2 ± 0.8 |
19.2 ± 1.6 |
42.9 ± 3.0 |
4.54 ± 0.18 |
1.29 ± 0.06 |
| MX1 |
51.9 ± 1.7 |
18.6 ± 1.1 |
27.6 ± 2.3 |
40.6 ± 2.9 |
2.80 ± 0.11 |
1.28 ± 0.07 |
| MX2 |
53.5 ± 1.6 |
16.6 ± 1.0 |
25.2 ± 2.1 |
41.4 ± 3.0 |
3.22 ± 0.12 |
1.30 ± 0.07 |
| MX3 |
53.8 ± 1.6 |
15.6 ± 1.0 |
23.9 ± 2.0 |
41.8 ± 3.0 |
3.44 ± 0.13 |
1.29 ± 0.07 |
| RH8 |
50.4 ± 1.7 |
19.9 ± 1.2 |
29.1 ± 2.4 |
40.0 ± 2.9 |
2.54 ± 0.10 |
1.27 ± 0.07 |
| RH9 |
50.6 ± 1.7 |
19.7 ± 1.2 |
28.8 ± 2.4 |
40.1 ± 2.9 |
2.58 ± 0.10 |
1.27 ± 0.07 |
| RH10 |
50.7 ± 1.7 |
19.6 ± 1.2 |
28.8 ± 2.4 |
40.1 ± 2.9 |
2.59 ± 0.10 |
1.27 ± 0.07 |
| Average |
51.9 |
17.9 |
26.6 |
40.8 |
3.0 |
1.3 |
| Median |
51.9 |
19.6 |
28.8 |
40.6 |
2.8 |
1.3 |
| Deviation |
2.0 |
2.9 |
3.6 |
1.2 |
0.7 |
0.0 |
Downstream wave speeds
and
mach numbers (About, Top)
|
Method
|
dV
|
Slow
|
Intermediate
|
Fast
|
Slow
Mach
|
Fast
Mach
|
| MC |
17.1 ± 1.4 |
22.8 ± 1.2 |
28.6 ± 1.0 |
41.2 ± 2.1 |
0.75 ± 0.06 |
0.42 ± 0.03 |
| VC |
19.3 ± 1.2 |
13.3 ± 0.7 |
18.3 ± 0.6 |
45.2 ± 2.4 |
1.45 ± 0.11 |
0.43 ± 0.03 |
| MX1 |
17.9 ± 1.3 |
20.4 ± 1.1 |
26.3 ± 0.9 |
42.4 ± 2.2 |
0.88 ± 0.06 |
0.42 ± 0.03 |
| MX2 |
18.6 ± 1.2 |
18.2 ± 1.0 |
24.1 ± 0.8 |
43.4 ± 2.3 |
1.02 ± 0.07 |
0.43 ± 0.03 |
| MX3 |
18.7 ± 1.2 |
17.1 ± 0.9 |
22.8 ± 0.8 |
43.9 ± 2.3 |
1.09 ± 0.08 |
0.43 ± 0.03 |
| RH8 |
17.4 ± 1.4 |
21.9 ± 1.2 |
27.7 ± 1.0 |
41.7 ± 2.2 |
0.79 ± 0.06 |
0.42 ± 0.03 |
| RH9 |
17.4 ± 1.4 |
21.6 ± 1.2 |
27.5 ± 1.0 |
41.8 ± 2.2 |
0.81 ± 0.06 |
0.42 ± 0.03 |
| RH10 |
17.4 ± 1.4 |
21.6 ± 1.1 |
27.5 ± 1.0 |
41.8 ± 2.2 |
0.81 ± 0.06 |
0.42 ± 0.03 |
| Average |
18.0 |
19.6 |
25.3 |
42.7 |
1.0 |
0.4 |
| Median |
17.9 |
21.6 |
27.5 |
42.4 |
0.9 |
0.4 |
| Deviation |
0.8 |
3.2 |
3.5 |
1.4 |
0.2 |
0.0 |
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)
| 
