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The accretion of hydrogen-rich material onto carbon-oxygen white dwarfs (CO WDs) is crucial for understanding type Ia supernova (SN Ia) from the single-degenerate model, but this process has not been well understood due to the numerical…

太阳与恒星天体物理 · 物理学 2015-06-16 Xin Ma , Xuefei Chen , Hailiang Chen , Pavel A. Denissenkov , Zhanwen Han

Supernovae of type Ia (SNe Ia) are believed to be thermonuclear explosions of carbon-oxygen white dwarfs (CO WDs). However, the mass accretion process onto CO WDs is still not completely understood. In this paper, we study the accretion of…

太阳与恒星天体物理 · 物理学 2015-11-18 Bo Wang , Yan Li , Xin Ma , Dongdong Liu , Xiao Cui , Zhanwen Han

Recent observations suggest that some type Ia supernovae (SNe Ia) originate from the merging of two carbon-oxygen white dwarfs (CO WDs). Meanwhile, recent hydrodynamical simulations have indicated that the accretion-induced collapse may be…

太阳与恒星天体物理 · 物理学 2018-03-08 Dongdong Liu , Bo Wang , Philipp Podsiadlowski , Zhanwen Han

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

The nature of the progenitors of Type Ia supernovae (SNe Ia) is still unclear. In this paper, by considering the effect of the instability of accretion disk on the evolution of white dwarf (WD) binaries, we performed binary evolution…

太阳与恒星天体物理 · 物理学 2012-05-29 Bo Wang , Xiang-Dong Li , Zhan-Wen Han

The double-degenerate (DD) model, involving the merging of massive double carbon-oxygen white dwarfs (CO WDs) driven by gravitational wave radiation, is one of the classical pathways for the formation of type Ia supernovae (SNe Ia).…

太阳与恒星天体物理 · 物理学 2018-03-07 Dongdong Liu , Bo Wang , Zhanwen Han

Recent theoretical and observational studies both argue that the merging of double carbon-oxygen white dwarfs (WDs) is responsible for at least some Type Ia supernovae (SNe Ia). Previous (standard) studies of the anticipated SN birthrate…

太阳与恒星天体物理 · 物理学 2015-06-05 Xuefei Chen , Jeffery C. Simon , Xianfei Zhang , Zhanwen Han

The potential importance of the angular momentum which is gained by accreting white dwarfs (WDs) has been increasingly recognized in the context of type Ia supernova (SN Ia) single-degenerate model. The expectation that the spin of the WD…

太阳与恒星天体物理 · 物理学 2014-10-21 Bo Wang , Stephen Justham , Zhengwei Liu , Jujia Zhang , Dongdong Liu , Zhanwen Han

The single-degenerate channel for the progenitors of type Ia supernovae (SNe Ia) are currently accepted, in which a carbon-oxygen white dwarf (CO WD) accretes hydrogen-rich material from its companion, increases its mass to the…

天体物理学 · 物理学 2009-11-13 X. Meng , X. Chen , Z. Han

It is thought that type Ia supernovae (SNe Ia) are explosions of carbon-oxygen white dwarfs (CO WDs). Two main evolutionary channels are proposed for the WD to reach the critical density required for a thermonuclear explosion: the single…

太阳与恒星天体物理 · 物理学 2015-06-18 J. S. W. Claeys , O. R. Pols , R. G. Izzard , J. Vink , F. W. M. Verbunt

We have carried out a detailed study of the single-degenerate channel for the progenitors of type Ia supernovae (SNe Ia). In the model, a carbon-oxygen white dwarf (CO WD) accretes hydrogen-rich material from an unevolved or a slightly…

天体物理学 · 物理学 2009-11-13 Xiangcun Meng , Xuefei Chen , Zhanwen Han

Employing Eggleton's stellar evolution code with an optically thick wind assumption, we have systematically studied the WD + He star channel of Type Ia supernovae (SNe Ia), in which a carbon-oxygen WD accretes material from a He…

太阳与恒星天体物理 · 物理学 2014-10-21 Bo Wang , Zhanwen Han

The hybrid CONe white dwarfs (WDs) have been suggested to be possible progenitors of type Ia supernovae (SNe Ia). In this article, we systematically studied the hybrid CONe WD + He star scenario for the progenitors of SNe Ia, in which a…

太阳与恒星天体物理 · 物理学 2014-10-13 Bo Wang , Xiangcun Meng , Dongdong Liu , Zhengwei Liu , Zhanwen Han

The nature of progenitors of Type Ia supernovae (SNe Ia) and their explosion mechanism remain unclear. It has been suggested that SNe Ia may be resulted from thermonuclear explosions of hybrid carbon-oxygen-neon white dwarfs(CONe WDs) when…

太阳与恒星天体物理 · 物理学 2025-04-03 Boyang Guo , Xiangcun Meng , Zhijia Tian , Jingxiao Luo , Zhengwei Liu

The white dwarf (WD) + helium (He) star binary channel plays an important role in the single degenerate scenario for the progenitors of type Ia supernovae (SNe Ia). Previous studies on the WD + main sequence star evolution have shown that…

太阳与恒星天体物理 · 物理学 2022-02-16 Zhe Cui , Xiang-Dong Li

In the symbiotic (or WD+RG) channel of the single degenerate scenario for type Ia supernovae (SNe Ia) the explosions occur a relatively long time after star formation. The birthrate from this channel would be too low to account for all…

太阳与恒星天体物理 · 物理学 2015-05-28 Xuefei Chen , Zhanwen Han , Christopher A. Tout

Incorporating the effect of mass-stripping and accretion-disk instability on the evolution of WD binary, we carried out binary stellar evolution calculations for more than 1600 close WD binaries. As a result, the initial parameter spaces…

太阳与恒星天体物理 · 物理学 2014-11-20 Xiangcun Meng , Wuming Yang

The evolution of an accreting white dwarf (WD) with strong magnetic field toward a type Ia supernova (SN Ia) may differ from the classical single-degenerate (SD) channel. In this paper, we perform binary population synthesis (BPS)…

高能天体物理现象 · 物理学 2019-12-11 Iminhaji Ablimit , Keiichi Maeda

The core-degenerate (CD) scenario has been suggested to be a possible progenitor model of type Ia supernovae (SNe Ia), in which a carbon-oxygen white dwarf (CO WD) merges with the hot CO core of a massive asymptotic giant branch (AGB) star…

太阳与恒星天体物理 · 物理学 2015-10-14 Weihong Zhou , Bo Wang , Xiangcun Meng , Dongdong Liu , Gang Zhao

Using the population synthesis binary evolution code StarTrack, we present theoretical rates and delay times of Type Ia supernovae arising from various formation channels. These channels include binaries in which the exploding white dwarf…

太阳与恒星天体物理 · 物理学 2015-05-20 A. J. Ruiter , K. Belczynski , S. A. Sim , W. Hillebrandt , M. Fink , M. Kromer
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