Inferred acoustic rates of solar p modes from several helioseismic instruments
Inferred acoustic rates of solar p modes from several helioseismic instruments
复制标题
从几种日震仪器推断太阳 p 模式的声波速率
DOI：
10.1051/0004-6361:20041229
复制
发表时间：
2005
影响因子：
6.5
通讯作者：
P. Gouttebroze
中科院分区：
文献类型：
--
作者：
F. Baudin;R. Samadi;M. Goupil;T. Appourchaux;T. Appourchaux;C. Barban;P. Boumier;W. Chaplin;P. Gouttebroze
声率的太阳能p模式的激发可以估计从观测，以放置在建模的激励过程和层的约束，它发生在星星。由于若干原因（包括较差的信噪比和模式重叠），这种估计是困难的。在这项工作中，我们使用三个完全独立的数据集，以获得稳健的估计，在太阳的情况下，为= 1模式。我们还表明，在太阳大气中的高度，观察到的模式必须考虑。我们的三组结果被证明是一致的，特别是在较低的部分的p-模式频谱（从1.8 mHz到2.8 mHz）。在较高的频率下，一致性不是那么好，因为测量的较大的分散性，并且还因为可能由于观测高度估计或噪声的系统性影响而引起的一些系统性差异。
Acoustic rates of excitation of solar p modes can be estimated from observations in order to place constraints on the modelling of the excitation process and the layers where it occurs in the star. For several reasons (including a poor signal to noise ratio and mode overlap), this estimation is difficult. In this work, we use three completely independent datasets to obtain robust estimates in the solar case for � = 1 modes. We also show that the height in the solar atmosphere where the modes are observed must be taken into account. Our three sets of results are shown to be consistent, particularly in the lower part of the p-mode spectrum (from 1.8 mHz to 2.8 mHz). At higher frequencies, the agreement is not as good, because of a larger dispersion of the measurements and also because of some systematic differences which might be due to observation height estimation or to a systematic influence of the noise.