English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  A large scale dynamo and magnetoturbulence in rapidly rotating core-collapse supernovae

Mösta, P., Ott, C. D., Radice, D., Roberts, L. F., Schnetter, E., & Haas, R. (2015). A large scale dynamo and magnetoturbulence in rapidly rotating core-collapse supernovae. Nature, 528(7582), 376-379. doi:10.1038/nature15755.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-5B2C-2 Version Permalink: http://hdl.handle.net/21.11116/0000-0002-99F0-2
Genre: Journal Article

Files

show Files
hide Files
:
1512.00838.pdf (Preprint), 9MB
Name:
1512.00838.pdf
Description:
File downloaded from arXiv at 2016-01-19 10:21
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
nature15755.pdf (Publisher version), 5MB
 
File Permalink:
-
Name:
nature15755.pdf
Description:
-
Visibility:
Restricted (Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Potsdam-Golm; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Mösta, Philipp1, Author              
Ott, Christian D., Author
Radice, David, Author
Roberts, Luke F., Author
Schnetter, Erik, Author
Haas, Roland, Author
Affiliations:
1Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24013              

Content

show
hide
Free keywords: Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Abstract: Magnetohydrodynamic (MHD) turbulence is of key importance in many high-energy astrophysical systems, including black-hole accretion disks, protoplanetary disks, neutron stars, and stellar interiors. MHD instabilities can amplify local magnetic field strength over very short time scales, but it is an open question whether this can result in the creation of a large scale ordered and dynamically relevant field. Specifically, the magnetorotational instability (MRI) has been suggested as a mechanism to grow magnetar-strength magnetic field ($\gtrsim 10^{15}\, \mathrm{G}$) and magnetorotationally power the explosion of a rotating massive star. Such stars are progenitor candidates for type Ic-bl hypernova explosions that involve relativistic outflows and make up all supernovae connected to long gamma-ray bursts (GRBs). We have carried out global 3D general-relativistic magnetohydrodynamic (GRMHD) turbulence simulations that resolve the fastest growing mode (FGM) of the MRI. We show that MRI-driven MHD turbulence in rapidly rotating protoneutron stars produces a highly efficient inverse cascade of magnetic energy. This builds up magnetic energy on large scales whose magnitude rivals the turbulent kinetic energy. We find a large-scale ordered toroidal field along the rotation axis of the protoneutron star that is consistent with the formation of bipolar magnetorotationally driven outflows. Our results demonstrate that rapidly rotating massive stars are plausible progenitors for both type Ic-bl supernovae and long GRBs, present a viable formation scenario for magnetars, and may account for potentially magnetar-powered superluminous supernovae.

Details

show
hide
Language(s):
 Dates: 2015-12-022015
 Publication Status: Published in print
 Pages: originally submitted version of Nature letter DOI:10.1038/nature15755, published online, Nature, Nov 30, 2015
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1512.00838
DOI: 10.1038/nature15755
URI: http://arxiv.org/abs/1512.00838
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Nature
  Abbreviation : Nature
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 528 (7582) Sequence Number: - Start / End Page: 376 - 379 Identifier: ISSN: 0028-0836
CoNE: /journals/resource/954925427238