Differential emission measure analysis of active region cores and quiet Sun for the non-Maxwellian kappa-distributions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F14%3A00429425" target="_blank" >RIV/67985815:_____/14:00429425 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/0004-6361/201323054" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201323054</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201323054" target="_blank" >10.1051/0004-6361/201323054</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Differential emission measure analysis of active region cores and quiet Sun for the non-Maxwellian kappa-distributions

Popis výsledku v původním jazyce

We perform DEM reconstruction for three active region cores and a quiet Sun region using the Withbroe-Sylwester method and the regularization method. Results: We find that the reconstructed DEMs depend on the value of kappa. The DEMs of the active regioncores show similar behavior with decreasing kappa, or an increasing departure from the Maxwellian distribution. For lower kappa, the peaks of the DEMs are typically shifted to higher temperatures and the DEMs themselves become more concave. This is caused by the less steep high-temperature slopes for lower kappa. However, the low-temperature slopes do not change significantly even for extremely low kappa. The behavior of the quiet-Sun DEM distribution is different. It becomes progressively less multithermal for lower kappa with the EM-loci plots that indicate near-isothermal plasma for kappa = 2. Conclusions: The kappa-distributions can influence the reconstructed DEMs. The slopes of the DEM, however, do not change with kappa significa

Název v anglickém jazyce

Differential emission measure analysis of active region cores and quiet Sun for the non-Maxwellian kappa-distributions

Popis výsledku anglicky

We perform DEM reconstruction for three active region cores and a quiet Sun region using the Withbroe-Sylwester method and the regularization method. Results: We find that the reconstructed DEMs depend on the value of kappa. The DEMs of the active regioncores show similar behavior with decreasing kappa, or an increasing departure from the Maxwellian distribution. For lower kappa, the peaks of the DEMs are typically shifted to higher temperatures and the DEMs themselves become more concave. This is caused by the less steep high-temperature slopes for lower kappa. However, the low-temperature slopes do not change significantly even for extremely low kappa. The behavior of the quiet-Sun DEM distribution is different. It becomes progressively less multithermal for lower kappa with the EM-loci plots that indicate near-isothermal plasma for kappa = 2. Conclusions: The kappa-distributions can influence the reconstructed DEMs. The slopes of the DEM, however, do not change with kappa significa

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

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Svazek periodika

564

Číslo periodika v rámci svazku

April

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

12

Strana od-do

"A130/1"-"A130/12"

Kód UT WoS článku

000334671000130

EID výsledku v databázi Scopus

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