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We present the first seconds-long 2D general relativistic neutrino magnetohydrodynamic simulations of accretion-induced collapse (AIC) in rapidly rotating, strongly magnetized white dwarfs (WDs), which might originate as remnants of…

高能天体物理现象 · 物理学 2025-02-21 Patrick Chi-Kit Cheong , Tetyana Pitik , Luís Felipe Longo Micchi , David Radice

We present 2D multi-group flux-limited diffusion magnetohydrodynamics (MHD) simulations of the Accretion-Induced Collapse (AIC) of a rapidly-rotating white dwarf. We focus on the dynamical role of MHD processes after the formation of a…

天体物理学 · 物理学 2009-11-13 Luc Dessart , Adam Burrows , Eli Livne , Christian Ott

Accretion-induced collapse (AIC) or merger-induced collapse (MIC) of white dwarfs (WDs) in binary systems is an interesting path to neutron star (NS) and magnetar formation, alternative to stellar core collapse and NS mergers. Such events…

高能天体物理现象 · 物理学 2025-03-24 Eirini Batziou , Robert Glas , H. -Thomas Janka , Jakob Ehring , Ernazar Abdikamalov , Oliver Just

We present 2.5D radiation-hydrodynamics simulations of the accretion-induced collapse (AIC) of white dwarfs, starting from 2D rotational equilibrium configurations of a 1.46-Msun and a 1.92-Msun model. Electron capture leads to the collapse…

天体物理学 · 物理学 2009-11-11 Luc Dessart , Adam Burrows , Christian Ott , Eli Livne , Sung-Chul Yoon , Norbert Langer

(Abridged.) The accretion-induced collapse (AIC) of a white dwarf (WD) may lead to the formation of a protoneutron star and a collapse-driven supernova explosion. This process represents a path alternative to thermonuclear disruption of…

高能天体物理现象 · 物理学 2010-04-06 E. B. Abdikamalov , C. D. Ott , L. Rezzolla , L. Dessart , H. Dimmelmeier , A. Marek , H. -T. Janka

We present the first end-to-end calculation connecting the accretion-induced collapse (AIC) of a magnetized, rapidly rotating white dwarf to observable kilonova signatures, combining 2D general-relativistic neutrino-magnetohydrodynamic…

高能天体物理现象 · 物理学 2026-02-26 Tetyana Pitik , David Radice , Daniel Kasen , Fabio Magistrelli , Patrick Chi-Kit Cheong , Sebastiano Bernuzzi

We present fully general-relativistic three-dimensional numerical simulations of accretion-induced collapse (AIC) of white dwarfs (WDs). We evolve three different WD models (nonrotating, rotating at 80% and 99% of the Keplerian mass…

高能天体物理现象 · 物理学 2023-09-27 Luís Felipe Longo Micchi , David Radice , Cecilia Chirenti

White dwarfs (WDs) embedded in gaseous disks of active galactic nucleus (AGNs) can rapidly accrete materials from the disks and grow in mass to reach or even exceed the Chandrasekhar limit. Binary WD (BWD) mergers are also believed to occur…

高能天体物理现象 · 物理学 2021-06-14 Jin-Ping Zhu , Yuan-Pei Yang , Bing Zhang , Liang-Duan Liu , Yun-Wei Yu , He Gao

It has long been hypothesized that accretion-induced collapse (AIC) of white dwarfs contribute to heavy chemical elements production in the universe. We present one-dimensional neutrino-radiative hydrodynamic simulations of AIC followed by…

高能天体物理现象 · 物理学 2024-01-09 Chun-Ming Yip , Ming-Chung Chu , Shing-Chi Leung , Lap-Ming Lin

It has long been expected that in some scenarios when a white dwarf (WD) grows to the Chandrasekhar limit, it can undergo an accretion induced collapse (AIC) to form a rapidly rotating neutron star. Nevertheless, the detection of such…

高能天体物理现象 · 物理学 2015-06-12 Anthony L. Piro , S. R. Kulkarni

Accretion-induced collapse (AIC) from oxygen/neon/magnesium composition white dwarf (ONeMg WD) + stripped helium (He) star binaries is one promising channel to form peculiar neutron star objects. It has been discussed that the WD's magnetic…

高能天体物理现象 · 物理学 2021-12-22 Iminhaji Ablimit

We present two-dimensional hydrodynamic simulations of the accretion-induced collapse (AIC) of rotating white dwarfs admixed with an extended component of dark matter (DM) comprising of sub-GeV degenerate fermionic DM particles. We find…

高能天体物理现象 · 物理学 2023-03-29 Ho-Sang Chan , Ming-chung Chu , Shing-Chi Leung

We present axisymmetric hydrodynamical simulations of accretion-induced collapse (AIC) of dark matter (DM) admixed rotating white dwarfs (WD) and their burst gravitational-wave (GW) signals. For initial WD models with the same central…

高能天体物理现象 · 物理学 2019-09-25 Shuai Zha , Ming-Chung Chu , Shing-Chi Leung , Lap-Ming Lin

A white dwarf (WD) approaching the Chandrasekhar mass may in several cases undergo accretion-induced collapse (AIC) to a neutron star (NS) before a thermonuclear explosion ensues. It has generally been assumed that AIC does not produce a…

天体物理学 · 物理学 2015-05-13 B. D. Metzger , A. L. Piro , E. Quataert

The accretion-induced collapse (AIC) of a white dwarf in a binary with a nondegenerate companion can sometimes lead to the formation of a rapidly rotating and highly magnetized neutron star (NS). The spin-down of this NS can drive a…

高能天体物理现象 · 物理学 2019-05-31 Yun-Wei Yu , Aming Chen , Xiang-Dong Li

Redbacks (RBs) and black widows (BWs) are two peculiar classes of eclipsing millisecond pulsars (MSPs). The accretion-induced collapse (AIC) of an oxygen/neon/magnesium composition white dwarf to a neutron star has been suggested as one…

高能天体物理现象 · 物理学 2019-09-18 Iminhaji Ablimit

We revisit the accretion-induced collapse (AIC) process, in which a white dwarf collapses into a neutron star. We are motivated by the persistent radio source associated with the fast radio burst FRB 121102, which was explained by Waxman as…

高能天体物理现象 · 物理学 2020-05-22 Amir Sharon , Doron Kushnir

The merger of a white dwarf (WD) and a neutron star (NS) is a relatively common event that will produce an observable electromagnetic signal. Furthermore, the compactness of these stellar objects makes them an interesting candidate for…

高能天体物理现象 · 物理学 2024-01-10 J. Moran-Fraile , F. K. Roepke , R. Pakmor , M. A. Aloy , S. T. Ohlmann , F. R. N. Schneider , G. Leidi

The accretion induced collapse (AIC) of a white dwarf into a neutron star has been invoked to explain gamma-ray bursts, Type Ia supernovae, and a number of problematic neutron star populations and specific binary systems. The ejecta from…

天体物理学 · 物理学 2009-10-31 C. L. Fryer , W. Benz , M. Herant , S. A. Colgate

We show three-dimensional magnetohydrodynamical simulations of core collapse supernova in which the progenitor has magnetic fields inclined to the rotation axis. The simulations employed a simple empirical equation of state in which the…

天体物理学 · 物理学 2009-11-13 Hayato Mikami , Yuji Sato , Tomoaki Matsumoto , Tomoyuki Hanawa
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