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Table 3.
Parameters used to model the number density profile of the E2 flyby.
| Parameter | Comment |
|---|---|
| γ(t) = 1.35 ⋅ 1014 s−1 | The dust ejection is stationary, the rate |
| was chosen to fit the data | |
| Equation (47) with μ = −1.0 and σ = 1.5 | Small particles dominate the population, |
| is used as a size distribution | but the distribution is not too steep |
| Equation (48) with Rc = 0.5 μm | This expression describes |
| and ugas = 1000 m s−1 is used | the dust acceleration by the gas flux |
| as the ejection speed distribution | inside the channels as it is at Enceladus |
| Equation (49) with ω = 10° is used | The distribution describes uniform emission |
| as the distribution of the ejection direction | into a cone of a given width |
| Rmin = 1.6 μm | The lower sensitivity threshold of the HRD |
| An arbitrarily chosen but reasonably | |
| high value, meaning that we can neglect | |
| particles with larger sizes. With our | |
| Rmax = 6 μm | choice of size distribution and the size-dependent |
| ejection speed distribution, it | |
| is highly unlikely that the HRD detects | |
| a particle of this size at the altitude of E2 flyby | |
| p = 0 | We are interested in the number density |
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