Temporal evolution of mottles observed in H_alpha

Details Temporal evolution of mottles observed in H_alpha Temporal evolution of mottles observed in H_alpha

2007-02-10

arxiv.org/abs/astro-ph/0702280v1

Astronomy and Astrophysics

Astrophysics

4 pages, 5 figures, contribution to proceedings of Coimbra Solar Physics Meeting on The Physics of Chromospheric Plasmas, ASP

Scientific paper

In April 2002, H_alpha observations of the solar chromosphere with high spatial and spectral resolution were obtained with the Gottingen Fabry-Perot Spectrometer mounted in the Vacuum Tower Telescope (VTT) at the Observatorio del Teide/Tenerife. In this work, we analyze a short time sequence of a quiet region with chains of mottles. Some physical parameters of dark mottles are determined by using Beckers' cloud model which takes the source function, the Doppler width, and the velocity to be constant within the cloud along the line of sight. Here, we present the results of our study.

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