Initial Helioseismic Observations by Hinode/SOT
Abstract
Results from initial helioseismic observations by Solar Optical Telescope onboard Hinode are reported. It has been demonstrated that intensity oscillation data from Broadband Filter Imager can be used for various helioseismic analyses. The k-omega power spectra, as well as corresponding time-distance cross-correlation function that promises high-resolution time-distance analysis below 6-Mm travelling distance, were obtained for G-band and CaII-H data. Subsurface supergranular patterns have been observed from our first time-distance analysis. The results show that the solar oscillation spectrum is extended to much higher frequencies and wavenumbers, and the time-distance diagram is extended to much shorter travel distances and times than they were observed before, thus revealing great potential for high-resolution helioseismic observations from Hinode.
Cite
@article{arxiv.0709.1806,
title = {Initial Helioseismic Observations by Hinode/SOT},
author = {Takashi Sekii and Alexander G. Kosovichev and Junwei Zhao and Saku Tsuneta and Hiromoto Shibahashi and Thomas E. Berger and Kiyoshi Ichimoto and Yukio Katsukawa and Bruce W. Lites and Shin'ichi Nagata and Toshifumi Shimizu and Richard A. Shine and Yoshinori Suematsu and Theodore D. Tarbell and Alan M. Title},
journal= {arXiv preprint arXiv:0709.1806},
year = {2015}
}
Comments
6 pages, accepted for publication in PASJ