Communication Dans Un Congrès Année : 2020

Ly α generation in intermediate velocity shock waves

Résumé

We update the Paris-Durham shock model, a state-of-the-art magnetohydrodynamic (MHD) shock code developed with a focus on molecular chemistry, in order to account for the self-generated UV field produced in shocks at velocities in the range 25-50 km/s. In these shocks there is significant excitation of atomic Hydrogen, with a large flux of Ly α photons escaping ahead of the shock to heat, ionize and drive molecular chemistry in a large slab of preshock gas.

Dates et versions

hal-05000046 , version 1 (21-03-2025)

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Andrew Lehmann, Benjamin Godard, Guillaume Pineau Des Forêts, Edith Falgarone. Ly α generation in intermediate velocity shock waves. IAU Symposium 352, International Astronomical Union, Jun 2019, Viana do Castelo, Portugal. pp.73-74, ⟨10.1017/S1743921320000654⟩. ⟨hal-05000046⟩
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