Detail publikace

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

JEJCIC, S. PETR HEINZEL, P. ZAPIOR, M. DRUCKMÜLLER, M. STANISLAV, G. KOTRČ, P.

Anglický název

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

Typ

Článek WoS

Jazyk

en

Originální abstrakt

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.

Klíčová slova anglicky

Sun, prominence

Vydáno

2014-07-01

ISSN

0038-0938

Časopis

SOLAR PHYSICS

Ročník

2014 (289)

Číslo

7

Strany od–do

2487–2501

Počet stran

14

BIBTEX


@article{BUT107604,
  author="Sonja {Jejcic} and Petr {Heinzel} and Maciej {Zapior} and Miloslav {Druckmüller} and Gunár {Stanislav} and Pavel {Kotrč}",
  title="Multi-Wavelength Eclipse Observations of a Quiescent Prominence Multi-Wavelength Eclipse Observations of a Quiescent Prominence Multi-Wavelength Eclipse Observations of a Quiescent Prominence",
  journal="SOLAR PHYSICS",
  year="2014",
  volume="2014 (289)",
  number="7",
  pages="2487--2501",
  doi="10.1007/s11207-014-0482-1",
  issn="0038-0938"
}