Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh34b..01p&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH34B-01
Astronomy and Astrophysics
Astrophysics
[7507] Solar Physics, Astrophysics, And Astronomy / Chromosphere, [7511] Solar Physics, Astrophysics, And Astronomy / Coronal Holes, [7599] Solar Physics, Astrophysics, And Astronomy / General Or Miscellaneous
Scientific paper
Understanding the dynamic solar chromosphere is of paramount importance in solar physics. Spicules are an important feature of the chromosphere, connecting the photosphere to the corona, potentially mediating the transfer of energy and mass. While it is generally accepted that there is more than one type of spicule, their quick motions, small spatial scales, and short lifetimes have prevented a systematic study of their properties over different solar regions. In the present work we undertake such a study, using Ca H filtergrams from Hinode/SOT and a semi-automated method to detect and track the spicules. Looking at different magnetic field configurations (quiet Sun, coronal holes, active regions), we discuss how the properties of the spicules change, how the two spicule populations (type I and type II) are connected, and how spicules are related to other chromospheric phenomena such as dynamic fibrils.
Carlsson Marcus
de Pontieu Bart
Pereira T. M.
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