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SYPA: Energetic Particle Acceleration in Space and Laboratory

SYPA 1: Particle Acceleration

SYPA 1.2: Hauptvortrag

Mittwoch, 1. April 2009, 17:30–18:00, Zahnklinik

Recent results on electron acceleration in solar flares obtained from hard X-ray diagnostics — •Alexander Warmuth and Gottfried Mann — Astrophysikalisches Institut Potsdam, Germany

The acceleration of electrons to high energies in solar flares is one of the main unsolved questions in solar physics. A key diagnostic tool for studying this process is the hard X-ray emission generated by the interaction of energetic electrons with the solar atmosphere. In recent years, the Reuven Ramaty High Energy Solar Spectroscopic Imager (RHESSI) has significantly advanced our knowledge in this spectral domain, primarily due to its high spectral resolution and simultaneous imaging capability. We will review the most important results of this mission concerning the characteristics of the energetic electrons, and we will discuss what this can tell us about the acceleration mechanism.