6533b856fe1ef96bd12b2701

RESEARCH PRODUCT

Nanoflare Evidence from Analysis of the X-Ray Variability of an Active Region Observed with Hinode/XRT

S. TerzoF. RealeM. MiceliR. KanoS. TsunetaJ. Klimchuk

subject

Solar Physics; X-raysSettore FIS/05 - Astronomia E AstrofisicaAstrophysics - Solar and Stellar AstrophysicsAstrophysics::High Energy Astrophysical PhenomenaSolar PhysicPhysics::Space PhysicsX-raysFOS: Physical sciencesAstrophysics::Solar and Stellar AstrophysicsSolar and Stellar Astrophysics (astro-ph.SR)

description

The heating of the solar corona is one of the big questions in astrophysics. Rapid pulses called nanoflares are among the best candidate mechanisms. The analysis of the time variability of coronal X-ray emission is potentially a very useful tool to detect impulsive events. We analyze the small-scale variability of a solar active region in a high cadence Hinode/XRT observation. The dataset allows us to detect very small deviations of emission fluctuations from the distribution expected for a constant rate. We discuss the deviations in the light of the pulsed-heating scenario.

yearjournalcountryeditionlanguage
2012-01-26
http://hdl.handle.net/10447/73215