Detail publikace

Comparing eclipse observations of the 2008 August 1 solar corona with an MHD model prediction

RUŠIN, V. DRUCKMÜLLER, M. ANIOL, P. MINAROVJECH, M. SANIGA, M. MIKIČ, Z. LINKER, J. LIONELLO, R. RILEY, P. TITOV, V.

Originální název

Comparing eclipse observations of the 2008 August 1 solar corona with an MHD model prediction

Anglický název

Comparing eclipse observations of the 2008 August 1 solar corona with an MHD model prediction

Typ

článek v časopise - ostatní, Jost

Jazyk

čeština

Originální abstrakt

The structure of the white-light and emission solar coronas and their MHD modelling are the context of our work. . A comparison is made between the structure of the solar corona as observed during the 2008 August 1 total eclipse from Mongolia and that predicted by an MHD model. The model has an improved energy formulation, including the effect of coronal heating, conduction of heat parallel to the magnetic field, radiative losses, and acceleration by Alfvén waves. The white-light corona, which was visible up to 20 solar radii, was of an intermediate type with well-pronounced helmet streamers situated above a chain of prominences at position angles of 48, 130, 241, and 322 degrees. Two polar coronal holes, filled with a plethora of thin polar plumes, were observed. High-quality pictures of the green (530.3 nm, Fe XIV) corona were obtained with the help of two narrow-passband filters (centered at the line itself and the vicinity of 529.1 nm background), with a FWHM of 0.15 nm. The large-scale shape of both the white-light and green corona was found to agree well with that predicted by the model. In this paper we describe the morphological properties of the observed corona, and how it compares with that predicted by the model.

Anglický abstrakt

The structure of the white-light and emission solar coronas and their MHD modelling are the context of our work. . A comparison is made between the structure of the solar corona as observed during the 2008 August 1 total eclipse from Mongolia and that predicted by an MHD model. The model has an improved energy formulation, including the effect of coronal heating, conduction of heat parallel to the magnetic field, radiative losses, and acceleration by Alfvén waves. The white-light corona, which was visible up to 20 solar radii, was of an intermediate type with well-pronounced helmet streamers situated above a chain of prominences at position angles of 48, 130, 241, and 322 degrees. Two polar coronal holes, filled with a plethora of thin polar plumes, were observed. High-quality pictures of the green (530.3 nm, Fe XIV) corona were obtained with the help of two narrow-passband filters (centered at the line itself and the vicinity of 529.1 nm background), with a FWHM of 0.15 nm. The large-scale shape of both the white-light and green corona was found to agree well with that predicted by the model. In this paper we describe the morphological properties of the observed corona, and how it compares with that predicted by the model.

Klíčová slova

sun, corona, magnetic field, MHD model

Klíčová slova v angličtině

sun, corona, magnetic field, MHD model

Autoři

RUŠIN, V.; DRUCKMÜLLER, M.; ANIOL, P.; MINAROVJECH, M.; SANIGA, M.; MIKIČ, Z.; LINKER, J.; LIONELLO, R.; RILEY, P.; TITOV, V.

Rok RIV

2010

Vydáno

10. 2. 2010

ISSN

0004-6361

Periodikum

ASTRONOMY & ASTROPHYSICS

Ročník

2010 (513)

Číslo

5

Stát

Francouzská republika

Strany od

49

Strany do

56

Strany počet

7

BibTex

@article{BUT50772,
  author="Vojtěch {Rušin} and Miloslav {Druckmüller} and Peter {Aniol} and Milan {Minarovjech} and Metod {Saniga} and Zoran {Mikič} and J.A. {Linker} and R. {Lionello} and P. {Riley} and V.S. {Titov}",
  title="Comparing eclipse observations of the 2008 August 1 solar corona with an MHD model prediction",
  journal="ASTRONOMY & ASTROPHYSICS",
  year="2010",
  volume="2010 (513)",
  number="5",
  pages="49--56",
  issn="0004-6361"
}