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.

Terzo, S., Reale, F., Miceli, M., Kano, R., Tsuneta, S., Klimchuk, J.A. (2012). Nanoflare Evidence from Analysis of the X-Ray Variability of an Active Region Observed with Hinode/XRT. In 4th Hinode Science Meeting: Unsolved Problems and Recent Insights (pp.245-250). San Francisco : Astronomical Society of the Pacific.

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

TERZO, Sergio;REALE, Fabio;MICELI, Marco;
2012-01-01

Abstract

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.
Settore FIS/05 - Astronomia E Astrofisica
4th Hinode Science Meeting: Unsolved Problems and Recent Insights
Palermo, Italy
11-15 October 2010
2012
6
http://aspbooks.org/custom/publications/paper/455-0245.html
Terzo, S., Reale, F., Miceli, M., Kano, R., Tsuneta, S., Klimchuk, J.A. (2012). Nanoflare Evidence from Analysis of the X-Ray Variability of an Active Region Observed with Hinode/XRT. In 4th Hinode Science Meeting: Unsolved Problems and Recent Insights (pp.245-250). San Francisco : Astronomical Society of the Pacific.
Proceedings (atti dei congressi)
Terzo, S; Reale, F; Miceli, M; Kano, R; Tsuneta, S; Klimchuk, JA
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/73215
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