Thermal emission from low-field neutron stars

被引：40

作者：

Gänsicke, BT

Braje, TM

Romani, RW

机构：

[1] Univ Sternwarte Gottingen, D-37083 Gottingen, Germany

[2] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

来源：

ASTRONOMY & ASTROPHYSICS | 2002年 / 386卷 / 03期

关键词：

stars : neutron; stars : atmospheres; radiative transfer; radiation mechanisms : thermal;

D O I：

10.1051/0004-6361:20020332

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a new grid of LTE model atmospheres for weakly magnetic (B less than or similar to 10(10) G) neutron stars, using opacity and equation of state data from the OPAL project and employing a fully frequency- and angle-dependent radiation transfer. We discuss the differences from earlier models, including a comparison with a detailed NLTE calculation. We suggest heating of the outer layers of the neutron star atmosphere as an explanation for the featureless X-ray spectra of RXJ1856.5-3754 and RXJ0720.4-3125 recently observed with Chandra and XMM.

引用

页码：1001 / 1008

页数：8

共 37 条

[1] PAIR CREATION ABOVE PULSAR POLAR CAPS - STEADY FLOW IN THE SURFACE ACCELERATION ZONE AND POLAR-CAP X-RAY-EMISSION [J].