WIND BRAKING OF MAGNETARS

doi:10.1088/0004-637X/768/2/144

IHEP OpenIR > 粒子天体物理中心

	WIND BRAKING OF MAGNETARS
	Tong H(仝号); Tong, H; Xu, 宋黎明; RX; Song, LM; Qiao, GJ
	2013
发表期刊	ASTROPHYSICAL JOURNAL (IF:5.533[JCR-2016],5.342[5-Year])
ISSN	0004-637X
EISSN	1538-4357
卷号	768 期号:2 页码:144
摘要	We explore the wind braking of magnetars considering recent observations challenging the traditional magnetar model. There is evidence for strong multipole magnetic fields in active magnetars, but the dipole field inferred from spin-down measurements may be strongly biased by particle wind. Recent observations challenging the traditional model of magnetars may be explained naturally by the wind braking scenario: (1) the supernova energies of magnetars are of normal value; (2) the non-detection in Fermi observations of magnetars; (3) the problem posed by low magnetic field soft gamma-ray repeaters; (4) the relation between magnetars and high magnetic field pulsars; and (5) a decreasing period derivative during magnetar outbursts. Transient magnetars with L-x<-(E) over dot(rot) may still be magnetic dipole braking. This may explain why low luminosity magnetars are more likely to have radio emissions. A strong reduction of the dipole magnetic field is possible only when the particle wind is very collimated at the star surface. A small reduction of the dipole magnetic field may result from detailed considerations of magnetar wind luminosity. In the wind braking scenario, magnetars are neutron stars with a strong multipole field. For some sources, a strong dipole field may no longer be needed. A magnetism-powered pulsar wind nebula will be one of the consequences of wind braking. For a magnetism-powered pulsar wind nebula, we should see a correlation between the nebula luminosity and the magnetar luminosity. Under the wind braking scenario, a braking index smaller than three is expected. Future braking index measurement of a magnetar may tell us whether magnetars are wind braking or magnetic dipole braking.
关键词	pulsars: general stars: magnetars stars: neutron
学科领域	Astronomy & Astrophysics
DOI	10.1088/0004-637X/768/2/144
收录类别	SCI ; INSPIREHEP ; ADS
语种	英语
WOS记录号	WOS:000318228400047
ADS Bibcode	2013ApJ...768..144T
ADS URL	https://ui.adsabs.harvard.edu/abs/2013ApJ...768..144T
ADS引文	https://ui.adsabs.harvard.edu/abs/2013ApJ...768..144T/citations
INSPIRE ID	1113872
INSPIRE URL	https://inspirehep.net/literature/1113872
引用统计	正在获取... 被引频次：53 [INSPIRE] 被引频次：74 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/224432
专题	粒子天体物理中心
推荐引用方式 GB/T 7714	Tong H,Tong, H,Xu, 宋黎明,et al. WIND BRAKING OF MAGNETARS[J]. ASTROPHYSICAL JOURNAL,2013,768(2):144.
APA	仝号,Tong, H,Xu, 宋黎明,RX,Song, LM,&Qiao, GJ.(2013).WIND BRAKING OF MAGNETARS.ASTROPHYSICAL JOURNAL,768(2),144.
MLA	仝号,et al."WIND BRAKING OF MAGNETARS".ASTROPHYSICAL JOURNAL 768.2(2013):144.