Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...401..849s&link_type=abstract
Astronomy and Astrophysics, v.401, p.849-850 (2003)
Astronomy and Astrophysics
Astrophysics
9
Plasmas, Waves, Ism: Clouds
Scientific paper
It is shown that nonlinear dynamics of modulated dust Alfvén wave packets is governed by a derivative nonlinear Schrödinger equation. The latter admits localized envelope solitons whose width L is larger than VA/Omegad, where VA is the dust Alfvén speed and Omegad the dust gyrofrequency. For dusty plasma parameters relevant to molecular clouds in interstellar space, the soliton width is of the order of a fraction of a parsec.
Kant Shukla Padma
Verheest Frank
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