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

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

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006japa...27..255a&link_type=abstract

Journal of Astrophysics and Astronomy, vol. 27, no.2 & 3 P.255-265

Astronomy and Astrophysics

Astrophysics

2

Solar Flares, Flare Trigger, Ring Diagram.

Scientific paper

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, 2003 was 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.

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