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Lyα generation in intermediate velocity shock waves

Published online by Cambridge University Press:  04 June 2020

Andrew Lehmann
Affiliation:
ENS, Université PSL, CNRS, Sorbonne Université, Paris, France
Benjamin Godard
Affiliation:
ENS, Université PSL, CNRS, Sorbonne Université, Paris, France LERMA, Observatoire de Paris, France email: andrew.lehmann@ens.fr
Guillaume Pineau des Forêts
Affiliation:
LERMA, Observatoire de Paris, France email: andrew.lehmann@ens.fr
Edith Falgarone
Affiliation:
ENS, Université PSL, CNRS, Sorbonne Université, Paris, France
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Abstract

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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 Lyα photons escaping ahead of the shock to heat, ionize and drive molecular chemistry in a large slab of preshock gas.

Type
Contributed Papers
Copyright
© International Astronomical Union 2020

References

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Lesaffre, P., Pineau des Forêts, G., Godard, B., et al. 2013, A&A, 550, 106Google Scholar