arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1912.02003astro-ph.SR
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全球日震学

Global Helioseismology

G. Buldgen

摘要:

日震学是天体物理学最成功的领域之一。对太阳振荡的观测和定性使太阳地震学家能够以前所未有的彻底性研究太阳的内部结构和动力学。地面网络和专门的空间任务提供了高质量的数据,使复杂的推理技术得以发展。该领域的成就包括确定太阳光球氦丰度(不受光谱限制)、对流区底部的精确定位以及恒星辐射区微观扩散重要性的证明。日震学在验证用于计算太阳和恒星模型的框架方面也发挥了关键作用,并在所谓的太阳中微子问题中发挥了重要作用。在当前的天体物理学时代,随着星震学对精确描述恒星的重要性日益增加,太阳仍然扮演着至关重要的校准角色,充当恒星模型的基准。随着对太阳丰度的修正和目前有关辐射不透明度计算的讨论,太阳作为基础物理实验室的作用是无可争议的。在这个简短的回顾中,我将讨论一些推理技术在日震学领域的发展,致力于开发太阳全球振荡模式。

英文摘要:

Helioseismology is one of the most successful fields of astrophysics. The observation and characterization of solar oscillation has allowed solar seismologists to study the internal structure and dynamics of the Sun with unprecedented thoroughness. Ground-based networks and dedicated space missions have delivered data of exquisite quality, enabling the development of sophisticated inference techniques. The achievements of the fields count, amongst other, the determination of solar photospheric helium abundance, unacessible to spectroscopic constraints, the precise positioning of the base of the convective zone and the demonstration of the importance of microscopic diffusion in stellar radiative regions. Helioseismology played also a key role in validating the framework used to compute solar and stellar models and played an important role in the so-called solar neutrino problem. In the current era of astrophysics, with the increasing importance of asteroseismology to precisely characterize stars, the Sun still plays a crucial calibration role, acting as a benchmark for stellar models. With the revision of the solar abundances and the current discussions related to radiative opacity computations, the role of the Sun as a laboratory of fundamental physics is undisputable. In this brief review, I will discuss some of the inference techniques developed in the field of helioseismology, dedicated to the exploitation of the solar global oscillation modes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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