gyre: an open-source stellar oscillation code based on a new Magnus Multiple Shooting scheme

被引：383

作者：

Townsend, R. H. D. ^{[1
]}

Teitler, S. A. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Astron, Madison, WI 53706 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2013年 / 435卷 / 04期

关键词：

methods: numerical; stars: evolution; stars: interiors; stars: oscillations; stars: variables: general; PULSATING B-STARS; NONRADIAL OSCILLATIONS; RED GIANTS; ASTROPHYSICS MESA; KEPLER MISSION; ASTEROSEISMOLOGY; MODES; POLYTROPES; STABILITY; EVOLUTION;

D O I：

10.1093/mnras/stt1533

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new oscillation code, gyre, which solves the stellar pulsation equations (both adiabatic and non-adiabatic) using a novel Magnus Multiple Shooting numerical scheme devised to overcome certain weaknesses of the usual relaxation and shooting schemes appearing in the literature. The code is accurate (up to sixth-order in the number of grid points), robust, efficiently makes use of multiple processor cores and/or nodes and is freely available in source form for use and distribution. We verify the code against analytic solutions and results from other oscillation codes, in all cases finding good agreement. Then, we use the code to explore how the asteroseismic observables of a 1.5 M-circle dot star change as it evolves through the red-giant bump.

引用

页码：3406 / 3418

页数：13

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