Zobrazeno 1 - 10
of 186 504
pro vyhledávání: '"A. Chandrasekhar"'
Autor:
Das, Mayusree, Mukhopadhyay, Banibrata
The existence of massive white dwarfs (WDs) containing more than Chandrasekhar's maximum mass has been suggested via the detection of peculiar type Ia Supernovae. It had been crucial to directly detect those 'super' (more massive)-Chandrasekhar WDs t
Externí odkaz:
http://arxiv.org/abs/2411.19059
Autor:
Zuraiq, Zenia, Kumar, Achal, Hackett, Alexander J., Bhattarai, Surendra, Tout, Christopher A., Mukhopadhyay, Banibrata
Over the last few decades, there has been considerable interest in the violation of the sacred "Chandrasekhar" mass limit of white dwarfs (WDs). Peculiar over-luminous type Ia supernovae (such as SNLS-03D3bb) lend observational support to the idea th
Externí odkaz:
http://arxiv.org/abs/2411.18692
Numerous studies have shown that generalized uncertainty principle (GUP) removes the Chandrasekhar limit, which can be restored using a negative GUP parameter. This study indicates that observational phantom dark energy also requires an extended unce
Externí odkaz:
http://arxiv.org/abs/2410.17080
Autor:
Schinasi-Lemberg, Eden, Kushnir, Doron
Type Ia supernovae (SNe Ia) are likely the thermonuclear explosions of carbon-oxygen (CO) white-dwarf (WD) stars, but the exact nature of their progenitor systems remains uncertain. Recent studies have suggested that a propagating detonation within a
Externí odkaz:
http://arxiv.org/abs/2410.02849
In this study, we apply two pillars of Scientific Machine Learning: Neural Ordinary Differential Equations (Neural ODEs) and Universal Differential Equations (UDEs) to the Chandrasekhar White Dwarf Equation (CWDE). The CWDE is fundamental for underst
Externí odkaz:
http://arxiv.org/abs/2410.14998
Autor:
Chen, Yuanhui, Wang, Qingxuan
In this paper, we consider the nonrelativistic limit of Chandrasekhar variational model for neutron stars. We show that the minimizer $\rho_{c}$ of Chandrasekhar energy $E_c(N)$ converges strongly to the minimizer $\rho_{\infty}$ of limit energy $E_{
Externí odkaz:
http://arxiv.org/abs/2408.16454
Autor:
Jeena, S. K., Banerjee, Projjwal
Publikováno v:
The Astrophysical Journal, 2024, 975, 108
Very metal-poor (VMP) stars (${\rm [Fe/H]}\leq -2$) that have sub-solar values of ${\rm [X/Fe]}$ for $\alpha$ elements such as Mg, Si, and Ca, are referred to as $\alpha$-poor VMP stars. They are quite rare among VMP stars and are thought to have for
Externí odkaz:
http://arxiv.org/abs/2407.04026
Autor:
Kameshwar C Wali
Subrahmanyan Chandrasekhar, Nobel Laureate in Physics, was a towering figure in 20th century physics, but remained a highly private man. The many letters and correspondence in this book reveal in Chandrasekhar's own words the depth of his pursuit of
Presently, primordial black holes (PBHs) in the asteroid-mass window from $10^{-16}$ M$_\odot$ to $10^{-10}$ M$_\odot$ are a popular dark matter candidate. If they exist, some stars would capture them upon formation, and they would slowly accrete the
Externí odkaz:
http://arxiv.org/abs/2406.17052
Autor:
Luo, Changqing, Li, Jiao, Zheng, Chuanjie, Liu, Dongdong, Li, Zhenwei, Luo, Yangping, Nemeth, Peter, Zhang, Bo, Xiong, Jianping, Wang, Bo, Wang, Song, Bai, Yu, Li, Qingzheng, Wang, Pei, Han, Zhanwen, Liu, Jifeng, Huang, Yang, Chen, Xuefei, Liu, Chao
Although supernovae is a well-known endpoint of an accreting white dwarf, alternative theoretical possibilities has been discussing broadly, such as the accretion-induced collapse (AIC) event as the endpoint of oxygen-neon (ONe) white dwarfs, either
Externí odkaz:
http://arxiv.org/abs/2404.04835