WIND BRAKING OF MAGNETARS

CORC > 新疆天文台 > 研究单元未命名 > 射电天文研究室 > 脉冲星研究团组

	WIND BRAKING OF MAGNETARS
	Tong, H.1,2 ; Xu, R. X.3,4; Song, L. M.2; Qiao, G. J.3,4
刊名	ASTROPHYSICAL JOURNAL
	2013-05-10
卷号	768 期号:2 页码:144
关键词	pulsars: general stars: magnetars stars: neutron
通讯作者	tonghao@xao.ac.cn
英文摘要	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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	X-RAY PULSAR ; MAGNETIZED NEUTRON-STARS ; SOFT GAMMA-REPEATERS ; SPIN-DOWN ; SGR 1900+14 ; RADIATIVE MECHANISM ; SWIFT J1834.9-0846 ; SUPERNOVA REMNANT ; GIANT FLARE ; 1E 2259+586
收录类别	SCI
语种	英语
WOS记录号	WOS:000318228400047
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/487]
专题	脉冲星研究团组新疆天文台_射电天文研究室
作者单位	1.Chinese Acad Sci, Xinjiang Astron Observ, Xinjiang 830011, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 3.Peking Univ, KIAA, Beijing 100871, Peoples R China 4.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Tong, H.,Xu, R. X.,Song, L. M.,et al. WIND BRAKING OF MAGNETARS[J]. ASTROPHYSICAL JOURNAL,2013,768(2):144.
APA	Tong, H.,Xu, R. X.,Song, L. M.,&Qiao, G. J..(2013).WIND BRAKING OF MAGNETARS.ASTROPHYSICAL JOURNAL,768(2),144.
MLA	Tong, H.,et al."WIND BRAKING OF MAGNETARS".ASTROPHYSICAL JOURNAL 768.2(2013):144.