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arXiv 2106.04825astro-ph.HEastro-ph.GA
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薄层近似下的能量守恒:V.超新星遗迹的表面亮度

Energy Conservation in the thin layer approximation: V. The surface brightness in supernova remnants

Lorenzo Zaninetti

摘要:

在能量守恒的薄层近似下,导出了超新星遗迹(SNR)的两个新的运动方程。第一个是基于周围密度的平方反比定律,第二个是基于扫掠质量的非立方依赖性。假设观测到的射电通量与动能通量成比例,导出了信噪比表面亮度时间演化的两个标度律。天体物理学的应用包括两个星系的表面亮度样本和一个河外星系。

英文摘要:

Two new equations of motion for a supernova remnant (SNR) are derived in the framework of energy conservation for the thin-layer approximation. The first one is based on an inverse square law for the surrounding density and the second one on a non-cubic dependence of the swept mass. Under the assumption that the observed radio-flux scales as the flux of kinetic energy, two scaling laws are derived for the temporal evolution of the surface brightness of SNRs. The astrophysical applications cover two galactic samples of surface brightness and an extragalactic one.

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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