Solar Chromospheric Dynamics: Onwards and Upwards

Details Solar Chromospheric Dynamics: Onwards and Upwards Solar Chromospheric Dynamics: Onwards and Upwards

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsp41b..03c&link_type=abstract

American Geophysical Union, Spring Meeting 2008, abstract #SP41B-03

Physics

7507 Chromosphere, 7524 Magnetic Fields, 7529 Photosphere

Scientific paper

We present a study of chromospheric dynamics and its relation with the driving photospheric magneto-convection in a variety of solar targets, from quiet Sun to more active regions. To this end high resolution observations were obtained in CaII 854.2 nm, Hα, and photospheric FeI lines with the Interferometric BIdimensional Spectrometer (IBIS) installed at the Dunn Solar Telescope of the NSO. The availability of full spectroscopic information on extended fields of view allows us to derive a comprehensive view of the intrinsically 3-D chromospheric scene. A coherent picture is emerging that involves the propagation and dissipation of photospheric acoustic waves into the chromospheric layers, but selected and guided by the local and highly variable magnetic topology. In particular, ubiquitous fibrilar structures, apparently originating from even the smallest magnetic elements, appear an integral part of the dynamic chromosphere.

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