dc.contributor.author | Lewis, Benjamin T. | |
dc.contributor.author | Bate, Matthew R. | |
dc.contributor.author | Price, Daniel J. | |
dc.date.accessioned | 2016-02-03T15:22:51Z | |
dc.date.issued | 2015-05-27 | |
dc.description.abstract | We have developed a modified form of the equations of smoothed particle magnetohydrodynamics which are stable in the presence of very steep density gradients. Using this formalism, we have performed simulations of the collapse of magnetized molecular cloud cores to form protostars and drive outflows. Our stable formalism allows for smaller sink particles (< 5 au) than used previously and the investigation of the effect of varying the angle, θ{symbol}, between the initial field axis and the rotation axis. The nature of the outflows depends strongly on this angle: jet-like outflows are not produced at all when θ{symbol} > 30°, and a collimated outflow is not sustained when θ{symbol} > 10°. No substantial outflows of any kind are produced when θ{symbol} > 60°. This may place constraints on the geometry of the magnetic field in molecular clouds where bipolar outflows are seen. | en_GB |
dc.description.sponsorship | European Research Council under the European Community's Seventh Framework Programme (FP7/2007-2013) | en_GB |
dc.description.sponsorship | Science and Technology Facilities Council (STFC) | en_GB |
dc.description.sponsorship | Australian Research Council (ARC) | en_GB |
dc.identifier.citation | Monthly Notices of the Royal Astronomical Society, 2015, Vol. 451 (1), pp. 288-299 | en_GB |
dc.identifier.doi | 10.1093/mnras/stv957 | |
dc.identifier.grantnumber | 339248 | en_GB |
dc.identifier.grantnumber | DP130102078 | en_GB |
dc.identifier.grantnumber | FT130100034 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/19588 | |
dc.language.iso | en | en_GB |
dc.publisher | Oxford University Press | en_GB |
dc.relation.url | http://hdl.handle.net/10871/17109 | en_GB |
dc.relation.url | http://www.astro.ex.ac.uk/people/blewis/research/outflows_misaligned_fields.html | en_GB |
dc.rights | This article has been accepted for publication in MNRAS. © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. | en_GB |
dc.title | Smoothed particle magnetohydrodynamic simulations of protostellar outflows with misaligned magnetic field and rotation axes (article) | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2016-02-03T15:22:51Z | |
dc.identifier.issn | 0035-8711 | |
dc.identifier.issn | 1365-2966 | |
dc.description | The dataset used to produce this paper can be accessed at http://hdl.handle.net/10871/17109
Animations can be viewed at http://www.astro.ex.ac.uk/people/blewis/research/outflows_misaligned_fields.html
The calculations for this paper were performed on the DiRAC Complexity machine, jointly funded by STFC and the Large Facilities Capital Fund of BIS, and the University of Exeter Supercomputer, a DiRAC Facility jointly funded by STFC, the Large Facilities Capital Fund of BIS and the University of Exeter. | en_GB |
dc.identifier.journal | Monthly Notices of the Royal Astronomical Society | en_GB |