[求救] Blazhko Stars

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物理小子
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[求救] Blazhko Stars

文章 物理小子 » 週二 23 11月, 2010 01:14

各位好耐冇見~
我係物理小子呀~
好耐冇返黎同大家吹水添~
唔好意思一返黎就要向大家請教

大家有冇聽過Blazhko Star呢
睇左好多資料只係明:
The Blazhko effect is a long period variation in period and amplitude in RR Lyrae type variable stars. It was first observed by Sergey Blazhko in 1907 in the star RW Dra. The cause of this effect is currently a matter of debate, with there being two primary hypotheses. The first, referred to as the resonance model, predicts that the cause of modulation is non-linear resonance in the star interior. The second, known as the magnetic model, assumes the variation to be caused by the magnetic field being inclined to the rotational axis, deforming the main radial mode.
Blazhko Stars are stars which shows Blazhko Effects.

但係就唔明non-linear resonance同inclined magnetic field with rotational axis點引起Blazhko Effect...

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鄧登凳
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文章 鄧登凳 » 週二 23 11月, 2010 10:54

似乎是流體力學的問題.....基本的星體旋轉(或流動)產生了短期的光暗, 但有另一些或涉及內部對流的旋轉, 或涉及磁場使流動變形, 因此短期的光暗變化有了調幅....但細節要看有關論文的原著才好說。

說明及文獻可參考: http://www.univie.ac.at/tops/blazhko/Ge ... tml#explan

內中包括
We can conclude that the basic physical understanding of the Blazhko phenomenon is still missing, and the viable models need fine-tuning. As both models for explaining the Blazhko effect are based on the presence of nonradial components, their detection and identification is of utmost importance for understanding the mechanism behind the amplitude modulation.
(italics in original)

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