MAGNETOROTATIONAL CORE-COLLAPSE SUPERNOVAE IN THREE DIMENSIONS

Journal Article · Sun Apr 20 00:00:00 EDT 2014 · Astrophysical Journal Letters

DOI:https://doi.org/10.1088/2041-8205/785/2/L29· OSTI ID:22365899

Mösta, Philipp; Richers, Sherwood; Ott, Christian D.; Haas, Roland; Piro, Anthony L.; Boydstun, Kristen; Abdikamalov, Ernazar; Reisswig, Christian ^[1]; Schnetter, Erik ^[2]

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1. TAPIR, Mailcode 350-17, California Institute of Technology, Pasadena, CA 91125 (United States)
2. Perimeter Institute for Theoretical Physics, Waterloo, ON (Canada)

We present results of new three-dimensional (3D) general-relativistic magnetohydrodynamic simulations of rapidly rotating strongly magnetized core collapse. These simulations are the first of their kind and include a microphysical finite-temperature equation of state and a leakage scheme that captures the overall energetics and lepton number exchange due to postbounce neutrino emission. Our results show that the 3D dynamics of magnetorotational core-collapse supernovae are fundamentally different from what was anticipated on the basis of previous simulations in axisymmetry (2D). A strong bipolar jet that develops in a simulation constrained to 2D is crippled by a spiral instability and fizzles in full 3D. While multiple (magneto-)hydrodynamic instabilities may be present, our analysis suggests that the jet is disrupted by an m = 1 kink instability of the ultra-strong toroidal field near the rotation axis. Instead of an axially symmetric jet, a completely new, previously unreported flow structure develops. Highly magnetized spiral plasma funnels expelled from the core push out the shock in polar regions, creating wide secularly expanding lobes. We observe no runaway explosion by the end of the full 3D simulation 185 ms after bounce. At this time, the lobes have reached maximum radii of ∼900 km.

• OSTI ID: 22365899
• Journal Information: Astrophysical Journal Letters, Vol. 785, Issue 2; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
AXIAL SYMMETRY
CAPTURE
COMPUTERIZED SIMULATION
COSMIC GAMMA BURSTS
COSMIC NEUTRINOS
EQUATIONS OF STATE
GRAVITATIONAL COLLAPSE
JETS
KINK INSTABILITY
LEPTON NUMBER
MAGNETOHYDRODYNAMICS
PLASMA
POLAR REGIONS
RELATIVISTIC RANGE
ROTATION
SUPERNOVAE
THREE-DIMENSIONAL CALCULATIONS