Diagnosing magnetars with transient cooling

被引：69

作者：

Luybarsky, Y

Eichler, D

Thompson, C

机构：

[1] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel

[2] Univ Toronto, Canadian Inst Theoret Astrophys, Toronto, ON M5S 2W9, Canada

来源：

ASTROPHYSICAL JOURNAL | 2002年 / 580卷 / 01期

基金：

以色列科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

magnetic fields; stars : neutron; X-rays : general;

D O I：

10.1086/345402

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Transient X-ray emission, with an approximate t(-0.7) decay, was observed from SGR 1900+14 over 40 days following the giant flare of 1998 August 27. We calculate in detail the diffusion of heat to the surface of a neutron star through an intense 10(14)-10(15) G magnetic field, following the release of magnetic energy in its outer layers. We show that the power-law index, the fraction of burst energy in the afterglow, and the return to persistent emission can all be understood if the star is composed of normal baryonic material.

引用

收藏

页码：L69 / L72

页数：4

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