Table 1.
Parameters of the TS according to the Rankine–Hugoniot relationships for density jumps, X, in the range of 1.1–1.6 for the plasma conditions measured during the solar event on September 10, 2017, i.e., the temperature, T1 = 18 MK, in the upstream region as well as the electron number density, Ne, 2 = 1010 cm−3, and the magnetic field, B2 = 400 G, in the downstream region.
| X | MA | Ne, 1(1010 cm−3) | B1 (G) | vA, 1 (km s−1) | kBT2 (keV) | Ne, 2 > 300 keV/N2 | Ne, 2 > 20 keV/Ne, 2 |
|---|---|---|---|---|---|---|---|
| 1.10 | 1.076 | 0.9091 | 364 | 7757 | 16.7 | 5.451 × 10−8 | 0.511 |
| 1.11 | 1.083 | 0.9009 | 360 | 7707 | 18.0 | 4.870 × 10−7 | 0.554 |
| 1.12 | 1.091 | 0.8929 | 357 | 7677 | 19.4 | 1.536 × 10−6 | 0.578 |
| 1.13 | 1.099 | 0.8850 | 354 | 7646 | 20.7 | 3.871 × 10−6 | 0.606 |
| 1.20 | 1.153 | 0.8333 | 333 | 7412 | 29.5 | 2.497 × 10−4 | 0.737 |
| 1.30 | 1.232 | 0.7692 | 308 | 7136 | 41.1 | 3.677 × 10−3 | 0.830 |
| 1.40 | 1.313 | 0.7143 | 286 | 6876 | 51.6 | 1.444 × 10−2 | 0.876 |
| 1.50 | 1.396 | 0.6667 | 267 | 6645 | 61.5 | 3.360 × 10−2 | 0.904 |
| 1.60 | 1.483 | 0.6250 | 250 | 6426 | 70.9 | 5.971 × 10−2 | 0.923 |
Notes. The Alfvén-Mach number, MA (second column), was calculated with Eq. (3). Ne, 1 = Ne, 2/X (third column), B1 = B2/X (fourth column), and vA, 1 = vA, 2/X1/2 (fifth column) are obtained for the electron number density, the magnetic field, and the Alfvén velocity, respectively, in upstream regions of the TS. The temperature in the downstream region, T2, was determined by Eq. (9). The corresponding thermal energies, kBT2, are given in the sixth column. In the upstream region, a temperature of T1 = 18 MK leads to a thermal energy of kBT1 = 1.55 keV. Ne, 2 > 300 keV/Ne, 2 (seventh column) and Ne, 2 > 20 keV/Ne, 2 (eighth column) denote the ratios between the number density of electrons with energies beyond 300 keV and 20 keV, respectively, and the full electron number density in the downstream region, Ne, 2. They were calculated by means of Eq. (6), with 
and 
.
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