Temporal Variations of High-Degree Solar p-Modes using Ring-Diagram Analysis

Autor:	Burtseva, Olga, Tripathy, Sushant, Bogart, Richard, Jain, Kiran, Howe, Rachel, Hill, Frank, Rabello-Soares, Maria Cristina
Rok vydání:	2013
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
DOI:	10.1088/1742-6596/440/1/012027
Popis:	We study temporal variations in the amplitudes and widths of high-degree acoustic modes by applying the ring-diagram technique to the GONG+, MDI and HMI Dopplergrams during the declining phase of cycle 23 and rising phase of cycle 24. The mode parameters from all three instruments respond similarly to the varying magnetic activity. The mode amplitudes and widths show consistently lower variation due to smaller magnetic activity in cycle 24 as compared to the previous solar cycle. Comment: Proceedings of the GONG 2012/ LWS/ SDO-5/ SOHO 27 conference; to be published by the Journal of Physics: Conference Series
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1303.6722 Zobrazit plný text záznamu View this record from Arxiv