Stellar Seismology

恒星地震学

• 批准号: 155320-2007
• 负责人: Guenther, David
• 金额: $ 3.38万
• 依托单位: Saint Mary's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2008
• 资助国家: 加拿大
• 起止时间: 2008-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=391745
• 关键词: Stellar; Seismology

My research is primarily directed toward understanding how stars work by analyzing the harmonic structure of sound waves that bounce around their interiors. The sound waves are not heard but seen. As a sound wave travels through the interior of a star it causes the material of the star to oscillate up and down into warmer and cooler regions of the star. The changes in temperature of the material can be seen on the surface of a star as minute variations in the star's brightness. From the brightness fluctuations, we can deduce the frequency and amplitude of the sound waves, which, in turn, can be used to build a picture of what is going on inside the star. Our methods are in many ways similar to the techniques used by seismologists to map out the composition of the interior of the earth using the vibrations produced by earthquakes.

我的研究主要是针对理解恒星如何通过分析围绕其内部弹跳的声波的谐波结构来理解工作的。声波没有听到，而是看到。当声波穿过恒星的内部时，它会导致恒星的材料上下旋转到恒星的较温暖和凉爽的区域。随着恒星亮度的微小变化，可以在恒星表面上看到材料温度的变化。从亮度波动中，我们可以推断出声波的频率和振幅，这反过来又可以用来构建恒星内部发生的情况。我们的方法在许多方面类似于地震学家使用地震产生的振动来绘制地球内部组成的技术。