Photospheric, Chromospheric and Helioseismic Signatures of a Large Flare in Super-active Region NOAA 10486

Journal of astrophysics and astronomy

Ashok Ambastha1¹ 

[1]Udaipur Solar Observatory, Physical Research Laboratory, Udaipur 313 001, India.$$

关键词: Solar flares;    flare trigger;    ring diagram.;   

DOI  :  

学科分类：天文学(综合)

来源: Indian Academy of Sciences

【 摘 要 】

NOAA 10486 produced several powerful flares, including the 4B/X17.2 superflare of October 28, 2003/11:10 UT. This flare was extensively covered by the H𝛼 and GONG instruments operated at the Udaipur Solar Observatory (USO). The central location of the active region on October 28, 2003was well-suited for the ring diagram analysis to obtain the 3-D power spectra and search for helioseismic response of this large flare on the amplitude, frequency and width of the p-modes. Further, using USO observations, we have identified the sites of new flux emergences, large proper motions and line-of-sight velocity flows in the active region and their relationship with the flare.

【 授权许可】

Unknown