Table 2.
Summary of the various exponents ax describing the radial scaling of the mean CME parameters ⟨X⟩CME and of the CME duration/size in the inner heliosphere, based on observational results and EUHFORIA simulations.
| Parameter | Observations | Simulations |
|---|---|---|
| av | [ − 0.305, −0.002] | −0.08 ± 0.01 (0.01 ± 0.02) |
| anp | −2.32 | −2.38 ± 0.11 (−2.78 ± 0.12) |
| aB | [ − 1.95, −1.30] | −1.90 ± 0.01 (−1.72 ± 0.06) |
| aTp | −0.32 | −1.19 ± 0.05 (−0.79 ± 0.15) |
| aPp, th | – | −4.05 ± 0.11 (−3.86 ± 0.03) |
| aPmag | – | −3.96 ± 0.03 (−3.44 ± 0.12) |
| aPtot | – | −3.96 ± 0.03 (−3.43 ± 0.13) |
| aβp | – | 0.11 ± 0.07 (−0.16 ± 0.13) |
| aΔtCME | 1.08 | 0.77 ± 0.03 |
| aSCME | [0.61, 0.92] | 0.69 ± 0.03 |
| aζCME | [0.16, 1.7] | −0.17 ± 0.07 |
Notes. The […, …] notation is used to indicate the lower and upper boundaries of each value range, as derived from observational studies. Only for the exponents provided in this table, in the rightmost column we have also indicated the uncertainties (±) on the simulated values based on 95% confidence intervals. In this column, we have also indicated in brackets the values based on the median, in order to provide a comparison with the mean-based parameters used in the analysis.
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