A study of the relation between intensity oscillations and magnetic field parameters in a sunspot： H

• 作 者: A. Raja Bayanna Shibu K. Mathe
• 机 构: UdaipurSolarObservatory,Leibniz-Institutfü,rAstrophysikPotsdam（AIP）
• 出 处: 天文和天体物理学研究：英文版
• 发表日期: 2014年11期
• 关键词: 功率振荡 磁场强度 太阳黑子 日出 场参数 高频率 矢量磁场 频率范围 Sunphotosphere -- Sun chromosphere -- Sun os
• 基金项目: Hinode is a Japanese mission developed and launched by ISAS/JAXA, col- laborating with NAOJ as a domestic partner, and NASA and STFC （UK） as international partners. Scientific operation of the Hinode

We present properties of intensity oscillations of a sunspot in the photosphere and chromosphere using G band and Ca II H filtergrams from Hinode. Intensity power maps as function of magnetic field strength and frequency reveal reduction of power in the G