Towards solar activity maximum 24 as seen by GOLF and VIRGO/SPM instruments

Abstract

All p-mode parameters vary with time as a response to the changes induced by the cyclic behavior of solar magnetic activity. After the unusual long solar-activity minimum between cycles 23 and 24, where the p-mode parameters have shown a different behavior than the surface magnetic proxies, we analyze the temporal variation of low-degree p-mode parameters measured by GOLF (in velocity) and VIRGO (in intensity) Sun-as-a-star instruments on board SoHO. We then compared our results with other activity proxies.

Proceedings of the GONG 2012 / LWS/SDO-5 / SOHO 27 meeting. 5 pages, 5 Figures