Ubiquitous Alfvenic Motions in Quiet Sun, Coronal Hole and Active Region Corona
Abstract
We use observations with AIA onboard SDO and report the discovery of ubiquitous Alfvenic oscillations in the corona of quiet Sun, active regions and coronal holes. These Alfvenic oscillations have significant power, and seem to be connected to the chromospheric Alfvenic oscillations previously reported with Hinode. We use Monte Carlo simulations to determine the strength and periods of the waves. Using unique joint observations of Hinode, the Solar Dynamics Observatory, and HAO's CoMP instrument we study the excitation of transverse oscillations as a function of space, time, and temperature. We will discuss the energetic impact and diagnostic capabilities of this ever-present process and how it can be used to build a more self-consistent picture of energy transport into the inner heliosphere. Transverse Oscillations Observed Above the Solar North Pole in the He II 304Å (bottom) and Fe IX 171Å (top) channels. Studying the progression of such points with altitude yields important information about wave propagation into the magnetically open corona.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFMSH14A..01M
- Keywords:
-
- 7500 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY;
- 7509 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / Corona;
- 7511 SOLAR PHYSICS;
- ASTROPHYSICS;
- AND ASTRONOMY / Coronal holes;
- 7836 SPACE PLASMA PHYSICS / MHD waves and instabilities