论文标题
$ν_ {\ rm max} $的太阳周期变化及其对星星学的影响
Solar cycle variation of $ν_{\rm max}$ in helioseismic data and its implications for asteroseismology
论文作者
论文摘要
频率为$ν_ {\ rm max} $，在这种频率中，太阳能振荡器的脉动功率峰值是星空学的重要数量。我们使用伯明翰太阳能振荡网络（BISON）（BISON）使用25年的Sun-As-A-Star多普勒速度观测来测量太阳的$ν_ {\ rm Max} $，通过将简单的模型安装在数据的功率谱上。我们还将拟合度应用于Gong and Golf的Sun-As-AS-AS-Star多普勒速度数据，以及来自ESA/NASA SOHO SOHO航天器上的处女座/SPM的光度计数据。我们发现太阳能$ν_ {\ rm max} $与太阳能活动的微弱但显着的正相关。基于直接使用校准了Sun的Asterosisic缩放关系，低半径和高度的低活性之间的未发现的变化（$ \ simeq 25 \，\ rmμHz$）的不确定性为0.8％，质量为2.4％。不同数据集中的平均$ν_ {\ rm max} $也清楚地抵消了频率。我们的结果标志着在AsteroseSology中使用$ν_ {\ rm max} $时，需要谨慎。
The frequency, $ν_{\rm max}$, at which the envelope of pulsation power peaks for solar-like oscillators is an important quantity in asteroseismology. We measure $ν_{\rm max}$ for the Sun using 25 years of Sun-as-a-Star Doppler velocity observations with the Birmingham Solar-Oscillations Network (BiSON), by fitting a simple model to binned power spectra of the data. We also apply the fit to Sun-as-a-Star Doppler velocity data from GONG and GOLF, and photometry data from VIRGO/SPM on the ESA/NASA SOHO spacecraft. We discover a weak but nevertheless significant positive correlation of the solar $ν_{\rm max}$ with solar activity. The uncovered shift between low and high activity, of $\simeq 25\,\rm μHz$, translates to an uncertainty of 0.8 per cent in radius and 2.4 per cent in mass, based on direct use of asteroseismic scaling relations calibrated to the Sun. The mean $ν_{\rm max}$ in the different datasets is also clearly offset in frequency. Our results flag the need for caution when using $ν_{\rm max}$ in asteroseismology.
