Radiation magnetohydrodynamic simulations of protostellar core formation

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We perform 3D nested-grid radiation magnetohydrodynamic (RMHD) simulations of the formation of proto-stellar cores from molecular cloud cores with and without the Ohmic dissipation of magnetic fields. In the ideal RMHD models, the evolution of the protostellar core is very similar to that in the spherically symmetric non-rotating model due to the efficient angular momentum transport. However, if the resistivity presents, the angular momentum transport is considerably suppressed due to the loss of magnetic flux, and rotationally-supported circumstellar disks are rapidly built up in the vicinity of the protostellar cores. Magnetic fields are amplified by rotation and fast outflows are launched from the protostellar cores via magnetic pressure gradient force. To our knowledge, these are the first 3D RMHD simulations resolving the protostellar cores in the world.

Original languageEnglish
Title of host publicationThe Labyrinth of Star Formation - Conference Dedicated to Prof. Anthony Whitworth
EditorsSimon Goodwin, Dimitris Stamatellos, Derek Ward-Thompson
PublisherKluwer Academic Publishers
Pages35-39
Number of pages5
ISBN (Print)9783319030401
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes
EventConference on Labyrinth of Star Formation dedicated to Prof. Anthony Whitworth, 2012 - Crete, Greece
Duration: 2012 Jun 1 → …

Publication series

NameAstrophysics and Space Science Proceedings
Volume36
ISSN (Print)1570-6591
ISSN (Electronic)1570-6605

Conference

ConferenceConference on Labyrinth of Star Formation dedicated to Prof. Anthony Whitworth, 2012
CountryGreece
CityCrete
Period12/6/1 → …

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Computer Science Applications
  • Spectroscopy
  • Space and Planetary Science
  • Nuclear and High Energy Physics

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  • Cite this

    Tomida, K. (2014). Radiation magnetohydrodynamic simulations of protostellar core formation. In S. Goodwin, D. Stamatellos, & D. Ward-Thompson (Eds.), The Labyrinth of Star Formation - Conference Dedicated to Prof. Anthony Whitworth (pp. 35-39). (Astrophysics and Space Science Proceedings; Vol. 36). Kluwer Academic Publishers. https://doi.org/10.1007/978-3-319-03041-8_6