arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1407.3404astro-ph.SRastro-ph.HEgr-qc
收藏

致密脉冲双星的引力辐射

Gravitational Radiation from Compact Binary Pulsars

John Antoniadis

摘要:

现代物理学中一个悬而未决的问题是,广义相对论(GR)是否是宏观尺度上物体间引力的完整描述。目前,支持这一假设的最佳实验是基于无线电信标的高精度计时。本章回顾了该领域的最新进展,重点是紧凑的双毫秒双星与白矮星(WD)的同伴。这些系统-如果建模正确-提供了一个无与伦比的测试地面的物理激励的替代GR偏离显着的强场制度。最近的观测技术的改进和我们对WD内部的理解的进步使得在这样的系统中进行一系列精确的质量测量成为可能。这些质量,再加上双星的高精度无线电定时,导致了对引力辐射性质的严格限制,与过去的情况有很大的不同。

英文摘要:

An outstanding question in modern Physics is whether general relativity (GR) is a complete description of gravity among bodies at macroscopic scales. Currently, the best experiments supporting this hypothesis are based on high-precision timing of radio pulsars. This chapter reviews recent advances in the field with a focus on compact binary millisecond pulsars with white-dwarf (WD) companions. These systems - if modeled properly - provide an unparalleled test ground for physically motivated alternatives to GR that deviate significantly in the strong-field regime. Recent improvements in observational techniques and advances in our understanding of WD interiors have enabled a series of precise mass measurements in such systems. These masses, combined with high-precision radio timing of the pulsars, result to stringent constraints on the radiative properties of gravity, qualitatively very different from what was available in the past.

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。

↑