MHD jets in inhomogeneous media

S. O'Sullivan*, Thibaut Lery

*Corresponding author for this work

    Research output: Contribution to journalConference articlepeer-review

    2 Scopus citations

    Abstract

    We present simulations of the propagation of non-adiabatic molecular jets into an inhomogeneous ambient medium. The jets have inflow conditions described by a MHD jet model where the shape of the magnetic field lines is prescribed near the source. Ambient density profiles are chosen to represent the transition zone between the outer regions of a molecular cloud and the ISM. We have scaled the atomic and molecular cooling rates to appropriate levels in order to properly resolve all length scales involved. With the inclusion of source variability, the simulations reproduce several observational features of molecular jets such as molecular cavities. Additionally, we find similarities between theory and observation for the ionization fraction along the jet. The lateral extent of the internal working surfaces is found to be sensitive to the environment. We also present preliminary results from a method of calculating emission line maps using only fundamental state variables that seems to reproduce the observed filamentary Balmer emission on shock fronts.

    Original languageEnglish (US)
    Pages (from-to)98-102
    Number of pages5
    JournalRevista Mexicana de Astronomia y Astrofisica: Serie de Conferencias
    Volume13
    StatePublished - Dec 1 2002
    EventEmission Lines from Jet Flows - Isla Mujeres, Mexico
    Duration: Nov 13 2000Nov 17 2000

    Keywords

    • ISM: jets and outflows
    • Magnetohydrodynamics
    • Stars: pre-main-sequence

    ASJC Scopus subject areas

    • Space and Planetary Science
    • Astronomy and Astrophysics

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