修正引力中大质量白矮星的不稳定性
In-Stabilities of massive white dwarfs in modified gravity
AI总结：
本研究在广义相对论和修正引力下，采用现实状态方程并考虑核不稳定性，严谨分析大质量白矮星超越钱德拉塞卡极限的可能性及其稳定性。
摘要：
超钱德拉塞卡白矮星因其与Ia型超新星（SN Ia）的关联，近年来成为科学界的热门话题。一些早期研究探讨了白矮星通过磁场超越钱德拉塞卡极限的可能性。更近期，修正引力被强调为这些恒星超越钱德拉塞卡极限并成为超新星前身星的原因。然而，通常对恒星结构和状态方程（EoS）采用简单假设，这可能导致不可靠的结论。在本工作中，我们力求严谨，在广义相对论和修正引力下采用现实的状态方程来描述白矮星，并考虑限制最大质量的核不稳定性。
英文摘要：
Super-Chandrasekhar white dwarfs are a timely topic in the last years in the scientific community due to its connection to supernovae type Ia (SN Ia). Some early studies tackled the possibility of white dwarfs surpassing the Chandrasekhar limit by means of a magnetic field. More recently, modified gravity has been highlighted as the reason for these stars to surpass the Chandrasekhar limit and becoming a supernova progenitor. However, in general simple assumptions are considered for the stellar structure and equation of state (EoS), which can lead to unreliable conclusions. In this work, we want to be rigorous and consider a realistic EoS to describe the white dwarfs in general relativity and modified gravity, taking into account nuclear instabilities that limit the maximum mass.
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