A New Mechanism for Core-Collapse Supernova Explosions

By Adam Burrows, E. Livne, L. Dessart, Christian D. Ott, J. Murphy. 2005

307 citations recorded by the source corpus.

In this paper we present a new mechanism for core-collapse supernova explosions that relies on acoustic power generated in the inner core as the driver. In our simulation using an 11 M☉ progenitor, an advective-acoustic oscillation à la Foglizzo with a period of ~25-30 ms arises ~200 ms after bounce. Its growth saturates due to the generation of secondary shocks, and kinks in the resulting shock structure funnel and regulate subsequent accretion onto the inner core. However, this instability is not the primary agent of explosion. Rather, it is the acoustic power generated early on in the inner turbulent region stirred by the accretion plumes and, most importantly, but later on, by the excitation and sonic damping of core g-mode oscillations. An ℓ = 1 mode with a period of ~3 ms grows at late times to be prominent around ~500 ms after bounce. The accreting proto-neutron star is a self-excited oscillator, "tuned" to the most easily excited core g-mode. The associated acoustic power seen in our 11 M☉ simulation is sufficient to drive the explosion >550 ms after bounce. The angular distribution of the emitted sound is fundamentally aspherical. The sound pulses radiated from the core steepen into shock waves that merge as they propagate into the outer mantle and deposit their energy and momentum with high efficiency. The ultimate source of the acoustic power is the gravitational energy of infall, and the core oscillation acts like a transducer to convert this accretion energy into sound. An advantage of the acoustic mechanism is that acoustic power does not abate until accretion subsides, so that it is available as long as it may be needed to explode the star. This suggests a natural means by which the supernova is self-regulating.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/f26b9c53c7d09954dbd725e1fc64f2ea2efa3bad

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

In Nuclear and High Energy Physics

Citations in the corpus

THREE-DIMENSIONAL HYDRODYNAMIC CORE-COLLAPSE SUPERNOVA SIMULATIONS FOR AN 11.2 M☉ STAR WITH SPECTRAL NEUTRINO TRANSPORT (2011, background): “The neutrino-driven mechanism would be assisted by other candidate mechanisms such as the acoustic mechanism (e.g., Burrows et al. (2006)) or the magnetohydrodynamic mechanism (e.g., Kotake et al. (2004); Takiwaki et al. (2004, 2009); Burrows et al. (2007a); Guilet et al. (2010); Obergaulinger &…”
The Supernova Gamma-Ray Burst Connection (2006, background): “However, it remains possible that the answer is being affected by uncertainties in the high density equation of state, changes in fundamental particle physics (especially neutrino flavor mixing), or the possible role of vibrational energy (Burrows et al., 2006).”
Multidimensional supernova simulations with approximative neutrino transport. II. Convection and the (2007, background): “However, like convection the SASI does not guarantee an explosion on the timescale considered in our simulations (in agreement with the findings of Burrows et al. 2006, 2007): the kinetic energy associated with the SASI remains negligible for the explosion energetics.”
Criteria for Core-Collapse Supernova Explosions by the Neutrino Mechanism (2008, methodology): “Furthermore Burrows et al. (2006), Burrows et al. (2007d), Burrows et al. (2007c), Burrows et al. (2007a), and Burrows et al. (2007b), using VULCAN/2D (Livne 1993; Livne et al. 2004) and multi-group flux-limited diffusion (MGFLD), obtain successful explosions only for the 8.8-”
A NEW MULTI-DIMENSIONAL GENERAL RELATIVISTIC NEUTRINO HYDRODYNAMICS CODE FOR CORE-COLLAPSE SUPERNOVAE. II. RELATIVISTIC EXPLOSION MODELS OF CORE-COLLAPSE SUPERNOVAE (2012, background): “…2006, 2009), while the former Arizona group did not obtain neutrino-driven explosions at all with their 2D MGFLD code Vulcan (Livne et al. 2004, 2007) but found acoustic explosions powered by sound waves created by violent dipolar oscillations of the protoneutron star (Burrows et al. 2006, 2007b).”
CORE-COLLAPSE SUPERNOVA EQUATIONS OF STATE BASED ON NEUTRON STAR OBSERVATIONS (2012, background): “Several explosion mechanisms have been discussed, i.e magneto-rotational by LeBlanc & Wilson (1970), dissipation of sound waves by Burrows et al. (2006), and the standard scenario driven by neutrino heating by Bethe & Wilson (1985).”
COMPACT REMNANT MASS FUNCTION: DEPENDENCE ON THE EXPLOSION MECHANISM AND METALLICITY (2011, background): “Most current studies of core-collapse supernovae have focused on a neutrino-driven engine enhanced by convection above the proto-NS surface (Herant et al. 1994; Fryer & Warren 2004; Buras et al. 2006; Burrows et al. 2006; Fryer & Young 2007; Scheck et al. 2008; Bruenn et al. 2009).”
Nucleosynthesis in Early Supernova Winds. II. The Role of Neutrinos (2005, background): “Possiblemechanisms are magnetic field entrainment of the outflowing matter (Thompson 2003), magnetic energy dissipation (Qian&Woosley 1996), acoustic energy input (Qian & Woosley 1996; Burrows et al. 2006), orAlfvénwave dampening (Suzuki&Nagataki 2005).”
A NEW MULTI-DIMENSIONAL GENERAL RELATIVISTIC NEUTRINO HYDRODYNAMIC CODE FOR CORE-COLLAPSE SUPERNOVAE. I. METHOD AND CODE TESTS IN SPHERICAL SYMMETRY (2010, background): “…drift of the total energy on the order of 1051 erg over a few 100 ms (which is a typical value for many simulations; see Liebendörfer et al. 2004; Burrows et al. 2006a; Murphy & Burrows 2008) have a qualitative influence on the propagation of the shock and the development of the explosion, as…”
NEW EQUATIONS OF STATE IN SIMULATIONS OF CORE-COLLAPSE SUPERNOVAE (2011, background): “These are the magneto-rotational mechanism by LeBlanc and Wilson (1970) and the acoustic mechanism by Burrows et al. (2006).”
Multidimensional supernova simulations with approximative neutrino transport. I. Neutron star kicks and the anisotropy of neutrino-driven explosions in two spatial dimensions (2006, methodology): “G-mode oscillations are in fact also present in the outer layers of our neutron stars – i.e. in the layers that are included on our grid – but their amplitudes are modest and thus they do not lead to the strong consequences reported by Burrows et al. (2006).”
Magnetized relativistic jets and long-duration GRBs from magnetar spin-down during core-collapse supernovae (2009, background): “…of a low-density cavity into which a neutrino-driven wind emerges is a generic property of models that explode, even if the explosion is asymmetric and the wind emerges anisotropically because the proto-neutron star continues to accrete at some latitudes (Burrows et al. 2006; Scheck et al. 2006).”
Nucleosynthesis and remnants in massive stars of solar metallicity (2007, background): “Current models give inadequate entropy in the wind and this may be where nucleosynthesis can be an important diagnostic of the explosion model (e.g., Burrows et al., 2006).33 The nucleosynthesis of the long-lived radioactivities 26Al and 60Fe is an important constraint on the stellar models, and…”
Instability of a Stalled Accretion Shock: Evidence for the Advective-Acoustic Cycle (2006, background): “It was also considered as a means to instigate g-mode dipole oscillations of the accreting neutron star (Burrows et al. 2006).”
Explosion mechanism, neutrino burst and gravitational wave in core-collapse supernovae (2005, unknown): “, [64] for the recently supposed scenario).”
A MODEL FOR GRAVITATIONAL WAVE EMISSION FROM NEUTRINO-DRIVEN CORE-COLLAPSE SUPERNOVAE (2009, background): “Their motivation was to investigate the excitation of PNS core g-modes, which are vital for the success of the acoustic mechanism (Burrows et al. 2006, 2007b), by these plumes.”