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

Eclipse on the Coral Sea: Cycle 24 Ascending

物理学;天文学

García, R.A.^1 ; Salabert, D.^2 ; Mathur, S.^3,4 ; Régulo, C.^5,6 ; Ballot, J.^7,8 ; Davies, G.R.^1,9 ; Jiménez, A.^5,6 ; Simoniello, R.^1

Laboratoire AIM, CEA/DSM-CNRS-Université Paris Diderot, IRFU, Sap, F-91191, Gif-sur-Yvette, France^1

Laboratoire Lagrange, UMR7293, Observatoire de la Côte d'Azur, 06304 Nice, France^2

High Altitude Observatory, 3080 Center Green Drive, Boulder, CO 80302, United States^3

Space Science Institute, 4750 Walnut Street, Boulder, CO 80301, United States^4

Instituto de Astrofísica de Canarias, E-38200 La Laguna, Tenerife, Spain^5

Department de Astrofísica, Universidad de la Laguna, E-38206 La Laguna, Tenerife, Spain^6

CNRS, Institut de Recherche en Astrophysique et Planétologie, 14 avenue Edouard Belin, 31400 Toulouse, France^7

Université de Toulouse, UPS-OMP, IRAP, 31400 Toulouse, France^8

School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom^9

关键词: Cyclic behavior;    Low degree;    Magnetic proxies;    P modes;    Solar activity;    Solar magnetic activity;    Temporal variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/440/1/012020/pdf
DOI  :  10.1088/1742-6596/440/1/012020

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

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 compare our results with other activity proxies.