Numerical Study of Polytropes with n=1 and Differential Rotation

被引：0
作者：
Razinkova, T. L. [1 ]
Yudin, A. V. [1 ,2 ]
Blinnikov, S. I. [1 ,3 ]
机构：
[1] Kurchatov Inst, Natl Res Ctr, Moscow 123098, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
[3] Kavli IPMU, Kashiwa, Chiba 2778583, Japan
来源：
ASTRONOMY REPORTS | 2024年 / 68卷 / 12期
基金：
俄罗斯科学基金会;
关键词：
star models; differential rotation; polytropes; NEUTRON-STARS; SHAPE; CRITERION; EQUATION; SYSTEMS;
D O I：
10.1134/S1063772925701367
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The solution space of differentially rotating polytropes with n = 1 has been studied numerically. The existence of three different types of configurations: from spheroids to thick tori, hockey puck-like bodies and spheroids surrounded by a torus, separate from or merging with the central body has been proved. It has been shown that the last two types appear only at moderate degrees of rotation differentiality, sigma similar or equal to 2. Rigid-body or weakly differential rotation, as well as strongly differential, have not led to any "exotic" types of configurations. Many calculated configurations have had extremely large values of parameter tau, which has raised the question of their stability with respect to fragmentation.
引用
收藏
页码：1423 / 1436
页数：14
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