SPHERICAL ACCRETION ONTO NEUTRON-STARS REVISITED - ARE HOT SOLUTIONS POSSIBLE

被引：21

作者：

TUROLLA, R

ZAMPIERI, L

COLPI, M

TREVES, A

机构：

[1] INT SCH ADV STUDIES,I-34014 MIRAMARE,ITALY

[2] UNIV MILAN,DEPT PHYS,I-20133 MILAN,ITALY

来源：

ASTROPHYSICAL JOURNAL | 1994年 / 426卷 / 01期

关键词：

ACCRETION; ACCRETION DISKS; STARS; NEUTRON; X-RAYS;

D O I：

10.1086/187333

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Stationary, spherical accretion onto an unmagnetized neutron star is here reconsidered in the wake of the seminal 1969 paper by Zel'dovich & Shakura. It is found that new '' hot '' solutions may exist for a wide range of luminosities. These solutions are characterized by a high temperature, 10(9)-10(11) K, and arise from a stationary equilibrium model where the dominant radiative mechanisms are multiple Compton scattering and bremsstrahlung emission. For low luminosities, less than or similar 10(-2) L(E), only the '' cold '' (a la Zel'dovich and Shakura) solution is present.

引用

页码：L35 / L38

页数：4

共 15 条

[1] X-RAY-EMISSION FROM A NEUTRON STAR ACCRETING MATERIAL [J].