Multi-Wavelength Eclipse Observations of a Quiescent Prominence Multi-Wavelength Eclipse Observations of a Quiescent Prominence Multi-Wavelength Eclipse Observations of a Quiescent Prominence

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F14%3APU109115" target="_blank" >RIV/00216305:26210/14:PU109115 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11207-014-0482-1" target="_blank" >http://dx.doi.org/10.1007/s11207-014-0482-1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11207-014-0482-1" target="_blank" >10.1007/s11207-014-0482-1</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Multi-Wavelength Eclipse Observations of a Quiescent Prominence Multi-Wavelength Eclipse Observations of a Quiescent Prominence Multi-Wavelength Eclipse Observations of a Quiescent Prominence

Popis výsledku v původním jazyce

We construct the maps of temperatures, geometrical thicknesses, electron densities and gas pressures in a quiescent prominence. For this we use the RGB signal of the prominence visible-light emission detected during the total solar eclipse of 1 August 2008 in Mongolia and quasi-simultaneous H alpha spectra taken at OndA (TM) ejov Observatory. The method of disentangling the electron density and geometrical (effective) thickness was described by Jeji and Heinzel (Solar Phys. 254, 89 -aEuro parts per thousand 100, 2009) and is used here for the first time to analyse the spatial variations of prominence parameters. For the studied prominence we obtained the following range of parameters: temperature 6000 -aEuro parts per thousand 15 000 K, effective thickness 200 -aEuro parts per thousand 15000 km, electron density 5x10(9) -aEuro parts per thousand 10(11) cm(-3) and gas pressure 0.02 -aEuro parts per thousand 0.2 dyn cm(-2) (assuming a fixed ionisation degree n (p)/n (H)=0.5). The electron density increases towards the bottom of the prominence, which we explain by an enhanced photoionisation due to the incident solar radiation. To confirm this, we construct a two-dimensional radiative-transfer model with realistic prominence illumination.

Název v anglickém jazyce

Multi-Wavelength Eclipse Observations of a Quiescent Prominence Multi-Wavelength Eclipse Observations of a Quiescent Prominence Multi-Wavelength Eclipse Observations of a Quiescent Prominence

Popis výsledku anglicky

We construct the maps of temperatures, geometrical thicknesses, electron densities and gas pressures in a quiescent prominence. For this we use the RGB signal of the prominence visible-light emission detected during the total solar eclipse of 1 August 2008 in Mongolia and quasi-simultaneous H alpha spectra taken at OndA (TM) ejov Observatory. The method of disentangling the electron density and geometrical (effective) thickness was described by Jeji and Heinzel (Solar Phys. 254, 89 -aEuro parts per thousand 100, 2009) and is used here for the first time to analyse the spatial variations of prominence parameters. For the studied prominence we obtained the following range of parameters: temperature 6000 -aEuro parts per thousand 15 000 K, effective thickness 200 -aEuro parts per thousand 15000 km, electron density 5x10(9) -aEuro parts per thousand 10(11) cm(-3) and gas pressure 0.02 -aEuro parts per thousand 0.2 dyn cm(-2) (assuming a fixed ionisation degree n (p)/n (H)=0.5). The electron density increases towards the bottom of the prominence, which we explain by an enhanced photoionisation due to the incident solar radiation. To confirm this, we construct a two-dimensional radiative-transfer model with realistic prominence illumination.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Solar Physics

ISSN

0038-0938

e-ISSN

1573-093X

Svazek periodika

2014 (289)

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

14

Strana od-do

2487-2501

Kód UT WoS článku

000334201400006

EID výsledku v databázi Scopus

2-s2.0-84897570219