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arXiv 0903.3655astro-ph.HEastro-ph.GA
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能量大于25 GeV的蟹状星云脉冲星的多分量模型

The multicomponent model of the Crab Pulsar at energies above 25 GeV

R. Campana, E. Massaro, T. Mineo, G. Cusumano

摘要:

根据MAGIC大气切伦科夫望远镜最近探测到的25 GeV以上的脉冲辐射,我们提出了一个多组分模型来解释蟹状星云脉冲星的脉冲辐射和光谱特征。该模型解释了脉冲形状和相位分辨光谱的演变,范围从光学/UV到GeV能带,假设所观察到的发射是由于几个组件,其光谱建模为对数抛物线定律。我们表明,新的MAGIC数据与我们的模型的预测是一致的。

英文摘要:

We review a proposed multicomponent model to explain the features of the pulsed emission and spectrum of the Crab Pulsar, on the light of the recent detection of pulsed emission above 25 GeV from the MAGIC atmospheric Cherenkov telescope. This model explains the evolution of the pulse shape and of the phase-resolved spectra, ranging from the optical/UV to the GeV energy band, on the assumption that the observed emission is due to several components, which have spectra modelled as log-parabolic laws. We show that the new MAGIC data are well consistent with the prevision of our model.

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