2014ApJ...784L..10S

Query : 2014ApJ...784L..10S

2014ApJ...784L..10S - Astrophys. J., 784, L10 (2014/March-3)

Influence of magnetorotational instability on neutrino heating: a new mechanism for weakly magnetized core-collapse supernovae.

SAWAI H. and YAMADA S.

Abstract (from CDS):

We investigated the impact of magnetorotational instability (MRI) on the dynamics of weakly magnetized, rapidly rotating core-collapse supernovae by conducting high-resolution axisymmetric MHD simulations with simplified neutrino transfer. We found that an initially sub-magnetar-class magnetic field is drastically amplified by MRI and substantially affects the dynamics thereafter. Although the magnetic pressure is not strong enough to eject matter, the amplified magnetic field efficiently transfers angular momentum from small to large radii and from higher to lower latitudes, which causes the expansion of the heating region due to the extra centrifugal force. This then enhances the efficiency of neutrino heating and eventually leads to neutrino-driven explosion. This is a new scenario of core-collapse supernovae that has never been demonstrated by past numerical simulations.

Abstract Copyright: ∼

Journal keyword(s): instabilities - magnetohydrodynamics, MHD - methods: numerical - stars: magnetars - supernovae: general

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME 30 Dor Region reg 05 38.0 -69 06           ~ 261 0

Query : 2014ApJ...784L..10S

Basic data :
NAME 30 Dor Region -- Region defined in the Sky
Other object types: otypes_help 		reg (2015AJ)
ICRS coord. (ep=J2000) : 		05 38 00.0 -69 06 00 [ ] E ~
FK4 coord. (ep=B1950 eq=1950) : 		05 38 20.6 -69 07 35 [ ]
Gal coord. (ep=J2000) : 		279.4726 -31.7346 [ ]
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NAME 30 Dor Region

References (261 between 1850 and 2026) (Total 261)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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