Predicted values of braking indexes and second frequency derivatives for magnetars
Predicted values of braking indexes and second frequency derivatives for magnetars
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DOI：
10.1002/asna.201412088
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发表时间：
2014-08
影响因子：
0.9
通讯作者：
Z. F. Gao;X. J. Zhao;D. Song;N. Liu;Na Wang
中科院分区：
文献类型：
--
作者：
Z. F. Gao;X. J. Zhao;D. Song;N. Liu;Na Wang
由于缺乏长时射电辐射和强定时噪声，迄今为止，磁星制动指数的观测测定仍是一个悬而未决的问题。假设磁星的真实的年龄是其宿主超新星遗迹（SNR）的年龄，超新星遗迹是大质量恒星爆炸产生的膨胀弥漫气态星云，我们获得了11颗具有SNR的磁星候选者的制动指数n的大小。根据我们的计算，磁星制动指数将被限制在1-40左右的范围内，假设信噪比的测量是可靠的。我们还调查了磁星的频率参数与相关的信噪比，并估计可能的风光度磁星withn 3。(C)2014 WILEY-VCH Verlag GmbH & Co. KGaA，魏因海姆
To date, the observational determination of braking indexes of magnetars is still an open question due to the lack of long-term radio emission and strong timing noise. Based on the assumption that the real ages of magnetars are the ages of their host supernova remnants (SNRs), expanding diffuse gaseous nebulae resulting from explosions of massive stars, we obtain the sizes of the braking index n for 11 magnetar candidates with SNRs. According to our calculations, the magnetar braking indexes will be constrained within the range of about 1-40, assuming the measurements of SNRs are reliable. We also investigate the frequency parameters of magnetars with associated SNRs, and estimate possible wind luminosities for magnetars withn 3. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim