Magnetars and white dwarf pulsars

被引：20

作者：

Lobato, Ronaldo V. ^{[1
]}

Malheiro, Manuel ^{[1
]}

Coelho, Jaziel G. ^{[2
]}

机构：

[1] Inst Tecnol Aeronaut, Dept Fis, BR-12245030 Sao Paulo, Brazil

[2] Inst Nacl Pesquisas Espaciais DAS INPE MCTI, Div Astrofis, BR-12227010 Sao Paulo, Brazil

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS D | 2016年 / 25卷 / 09期

基金：

巴西圣保罗研究基金会;

关键词：

Magnetic fields; magnetic white dwarfs; pulsars; SGRs/AXPs; MAGNETIZED NEUTRON-STARS; GAMMA-RAY REPEATERS; 1E 2259+586; DISCOVERY; EMISSION; BURSTS; PERIOD; AXPS; SGRS;

D O I：

10.1142/S021827181641025X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The anomalous X-ray pulsars (AXPs) and soft gamma-ray repeaters (SGRs) are a class of pulsars understood as neutron stars (NSs) with super strong surface magnetic fields, namely B greater than or similar to 10(14) G, and for that reason are known as magnetars. However, in the last years, some SGRs/AXPs with low surface magnetic fields B similar to (10(12)-10(13)) G have been detected, challenging the magnetar description. Moreover, some fast and very magnetic white dwarfs (WDs) have also been observed, and at least one showed X-ray energy emission as an ordinary pulsar. Following this fact, an alternative model based on WDs pulsars has been proposed to explain this special class of pulsars. In this model, AXPs and SGRs as dense and magnetized WDs can have surface magnetic field B similar to 10(7)-10(10) G and rotate very fast with frequencies Omega similar to 1 rad/s, consistent with the observed rotation periods P similar to (2-12) s.

引用

页数：8

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