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Type Ia supernovae (SNe Ia) play a prominent role in understanding the evolution of Universe. They are thought to be thermonuclear explosions of mass-accreting carbon-oxygen white dwarfs (CO WDs) in binaries, although the mass donors of the…

太阳与恒星天体物理 · 物理学 2020-07-14 Bo Wang

The progenitor problem of Type Ia supernovae (SNe Ia) is still unsolved. Most of these events are thought to be explosions of carbon-oxygen (CO) white dwarfs (WDs), but for many of the explosion scenarios, particularly those involving the…

Normal type Ia supernovae (SNe) are thought to arise from the thermonuclear explosion of massive ($>0.8$ M$_\odot$) carbon-oxygen white dwarfs (WDs), although the exact mechanism is debated. In some models helium accretion onto a…

太阳与恒星天体物理 · 物理学 2021-03-17 Ruediger Pakmor , Yossef Zenati , Hagai B. Perets , Silvia Toonen

Type Ia supernovae (SNe Ia) play an important role in astrophysics and are crucial for the studies of stellar evolution, galaxy evolution and cosmology. They are generally thought to be thermonuclear explosions of accreting carbon-oxygen…

太阳与恒星天体物理 · 物理学 2020-07-14 Bo Wang , Zhanwen Han

Sub-Chandrasekhar mass carbon-oxygen white dwarfs (CO WDs) with a surface helium (He) shell have been proposed as progenitors of Type Ia supernovae (SNe Ia). If true, the resulting thermonuclear explosions should be able to account for at…

太阳与恒星天体物理 · 物理学 2021-06-08 Sabrina Gronow , Christine E. Collins , Stuart A. Sim , Friedrich K. Roepke

Type Ia supernovae (SNe Ia) play a crucial role in studying cosmology and galactic chemical evolution. They are thought to be thermonuclear explosions of carbon-oxygen white dwarfs (CO WDs) when their masses reach the Chandrasekar mass…

太阳与恒星天体物理 · 物理学 2017-08-28 C. Wu , B. Wang , D. Liu , Z. Han

Recent observations of Type Ia supernovae (SNe Ia) have shown diversified properties of the explosion strength, light curves and chemical composition. To investigate possible origins of such diversities in SNe Ia, we have presented…

高能天体物理现象 · 物理学 2020-07-02 Shing-Chi Leung , Ken'ichi Nomoto

The single-degenerate model for the progenitors of type Ia supernovae (SNe Ia) is one of the two most popular models, in which a carbon-oxygen white dwarf (CO WD) accretes hydrogen-rich material from its companion, increases its mass to the…

太阳与恒星天体物理 · 物理学 2015-05-13 Xiangcun Meng , Wuming Yang , Xuemin Geng

Type Ia supernovae (SNe) are thought to originate from the thermonuclear explosions of carbon-oxygen (CO) white dwarfs (WDs). The proposed progenitors of standard type Ia SNe have been studied for decades and can be, generally, divided into…

高能天体物理现象 · 物理学 2019-10-18 Hagai B. Perets , Yossef Zenati , Silvia Toonen , Alexey Bobrick

Type Ia SNe (SNe Ia) are thought to come from carbon-oxygen white dwarfs that accrete mass from binary companions until they approach the Chandrasekhar limit, ignite carbon, and undergo complete thermonuclear disruption. A survey of the…

天体物理学 · 物理学 2008-11-26 M. Parthasarathy , David Branch , David J. Jeffery , E. Baron

It has been widely accepted that mass-accreting white dwarfs (WDs) are the progenitors of Type Ia supernovae or electron-capture supernovae. Previous work has shown that the accretion rate could affect the elemental abundance on the outer…

太阳与恒星天体物理 · 物理学 2024-09-26 Zhengyang Zhang , Chengyuan Wu , Amar Aryan , Shuai Zha , Dongdong Liu , Bo Wang

Recent discovery of several overluminous type Ia supernovae (SNe Ia) indicates that the explosive masses of white dwarfs may significantly exceed the canonical Chandrasekhar mass limit. Rapid differential rotation may support these massive…

高能天体物理现象 · 物理学 2015-05-19 W. -M. Liu , W. -C. Chen , B. Wang , Z. W. Han

The carbon-oxygen white dwarf (CO WD) + He star channel has been thought to be one of the promising scnarios to produce young type Ia supernovae (SNe Ia). Previous studies found that if the mass-accretion rate is greater than a critical…

高能天体物理现象 · 物理学 2020-06-03 Chengyuan Wu , Bo Wang , Xiaofeng Wang , Keiichi Maeda , Paolo Mazzali

Despite the significance of Type Ia supernovae (SNeIa) in many fields in astrophysics, SNeIa lack a theoretical explanation. The standard scenarios involve thermonuclear explosions of carbon/oxygen white dwarfs approaching the Chandrasekhar…

高能天体物理现象 · 物理学 2013-02-05 S. Toonen , G. Nelemans , M. Bours , S. Portegies Zwart , J. Claeys , N. Mennekens , A. Ruiter

The dependence of the Type Ia supernova (SN Ia) rate on galaxy type is examined for three currently proposed scenarios: merging of a Chandrasekhar--mass CO white dwarf (WD) with a CO WD companion, explosion of a sub--Chandrasekhar mass CO…

天体物理学 · 物理学 2009-10-28 P. Ruiz-Lapuente , A. Burkert , R. Canal

Binary stellar evolution calculations predict that Chandrasekhar-mass carbon/oxygen white dwarfs (WDs) show a radially varying profile for the composition with a carbon depleted core. Many recent multi-dimensional simulations of Type Ia…

We have carried out a detailed study of one of the most popular evolutionary channels for the production of Type Ia supernova (SN Ia) progenitors, the semi-degenerate channel (CO+MS), where a carbon/oxygen (CO) white dwarf (WD) accretes…

天体物理学 · 物理学 2009-11-10 Zhanwen Han , Philipp Podsiadlowski

We have considered scenarios for the evolution of close binaries resulting in the formation of semi-detached systems in which a white dwarf can accumulate Chandrasekhar mass by accretion from a main-sequence or subgiant companion with…

天体物理学 · 物理学 2009-11-10 A. V. Fedorova , A. V. Tutukov , L. R. Yungelson

Nova explosions occur on the white dwarf (WD) component of a Cataclysmic Variable stellar system which is accreting matter lost by a companion. A Type Ia supernova explosion is thought to result when a WD, in a similar binary configuration,…

天体物理学 · 物理学 2009-11-10 S. Starrfield , F. X. Timmes , W. R. Hix , E. M. Sion , W. M. Sparks , S. J. Dwyer

We review some recent developments in theoretical studies on the connection between the progenitor systems of Type Ia supernovae (SNe Ia) and the explosion mechanisms. (1) DD-subCh: In the merging of double C+O white dwarfs (DD scenario),…

太阳与恒星天体物理 · 物理学 2013-02-19 Ken'ichi Nomoto , Yasuomi Kamiya , Naohito Nakasato
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