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arXiv 1306.2445astro-ph.HEastro-ph.SR
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磁星1 E 2259+586在风制动场景下的抗毛刺

Anti-glitch of magnetar 1E 2259+586 in the wind braking scenario

H. Tong

摘要:

对磁星1 E2259 +586的抗毛刺进行了理论分析。在观测间隔期间增强的粒子风将带走中子星额外的转动能量。这将导致磁星的净自旋下降,即,一个抗干扰装置在抗毛刺的风制动场景中,有几个预测:(1)辐射事件将始终伴随着抗毛刺,(2)抗毛刺后制动指数的降低/变化,(3)抗毛刺只是增强的自旋下降的一段时间。如果有足够的定时观测,则预计会出现一段增强的自旋下降时间,而不是抗毛刺。还包括对SGR 1900+14和PSR J1846-0258的先前定时事件的应用。结果表明,在风制动模型中,可以安全地理解1 E 2259+586、SGR 1900+14和PSR J1846-0258的电流定时事件。在SGR 1806-20的巨大耀斑之前,增强的自旋下降和抗故障的缺乏与风制动情景一致。

英文摘要:

The anti-glitch of magnetar 1E 2259+586 is analyzed theoretically. An enhanced particle wind during the observational interval will taken away additional rotational energy of the neutron star. This will result in a net spin-down of the magnetar, i.e., an anti-glitch. In the wind braking scenario of anti-glitch, there are several predictions: (1) A radiative event will always accompany the anti-glitch, (2) Decrease/variation of braking index after anti-glitch, (3) Anti-glitch is just a period of enhanced spin-down. If there are enough timing observations, a period of enhanced spin-down is expected instead of an anti-glitch. Applications to previous timing events of SGR 1900+14, and PSR J1846-0258 are also included. It is shown that current timing events of 1E 2259+586, SGR 1900+14, and PSR J1846-0258 can be understood safely in the wind braking model. The enhanced spin-down and absence of an anti-glitch before the giant flare of SGR 1806-20 is consistent with the wind braking scenario.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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