An Estimate of Chromospheric Heating by Acoustic Waves

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F14%3A00456565" target="_blank" >RIV/67985815:_____/14:00456565 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

An Estimate of Chromospheric Heating by Acoustic Waves

Original language description

Several mechanisms may heat the solar chromosphere: acoustic waves, magnetoacoustic waves (slow, fast, and Alfvén waves), and small-scale magnetic reconnections. Based on observations in the Ca II 854.2 nm line, the contribution of acoustic waves to theheating of quiet and plage regions in the chromosphere is discussed. The energy released by radiative losses is compared with the energy deposited by acoustic waves. Radiative losses are computed using a grid of six semi-empirical models VAL A--F. The deposited acoustic flux is calculated using power spectra of Doppler oscillations measured in the CaII line core. The comparison shows that the spatial correlation of maps of radiative losses and acoustic flux is 70 %. The deposited acoustic flux providesat least 25--30% of the energy radiated in the quiet chromosphere and 50% in plage regions.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Central European Astrophysical Bulletin

ISSN

1845-8319

e-ISSN

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Volume of the periodical

38

Issue of the periodical within the volume

1

Country of publishing house

HR - CROATIA

Number of pages

6

Pages from-to

53-58

UT code for WoS article

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EID of the result in the Scopus database

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