Helioseismic and Magnetic Imager Multi-height Dopplergrams

Autor:	Nagashima, Kaori, Gizon, Laurent, Birch, Aaron, Löptien, Björn, Couvidat, Sebastien, Fleck, Bernhard
Rok vydání:	2014
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Zdroj:	ASP Conf. Ser., Vol.479, 2013, p.429
Druh dokumentu:	Working Paper
Popis:	We study Doppler velocity measurements at multiple heights in the solar atmosphere using a set of six filtergrams obtained by the Helioseismic magnetic Imager on board the Solar Dynamics Observatory. There are clear and significant phase differences between core and wing Dopplergrams in the frequency range above the photospheric acoustic cutoff frequency, which indicates that these are really "multi-height" datasets. Comment: 4 pages, 3 figures, in the proceedings "Progress in Physics of the Sun and Stars: A New Era in Helio- and Asteroseismology" (ASP Conference Series)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1401.3182 Zobrazit plný text záznamu View this record from Arxiv