Solar Eclipse Images and the Solar Wind

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F08%3APU74269" target="_blank" >RIV/00216305:26210/08:PU74269 - 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

Solar Eclipse Images and the Solar Wind

Original language description

Over the past decade, diverse observations of the Sun, corona, and heliosphere during solar minimum have repeatedly shown that the solar wind expands radially from the entire Sun. These results are, however, at odds with the conventional view of superradial expansion from polar coronal holes. The purpose of this Letter is to reconcile this conflict by taking a closer look at solar eclipse pictures on which the conventional view is based. The latter are referred to as processed solar eclipse pictures because they are obtained with a radially graded density filter or by the merging of images taken at different exposures and subsequent numerical image processing. We illustrate the importance of quantitative studies in understanding imaging by comparing numerically processed images and isophotes from the 2006 solar eclipse. Familiar large-scale structures traditionally interpreted in terms of density as diverging polar coronal holes and converging coronal streamers are in fact features of

Czech name

Solar Eclipse Images and the Solar Wind

Czech description

Over the past decade, diverse observations of the Sun, corona, and heliosphere during solar minimum have repeatedly shown that the solar wind expands radially from the entire Sun. These results are, however, at odds with the conventional view of superradial expansion from polar coronal holes. The purpose of this Letter is to reconcile this conflict by taking a closer look at solar eclipse pictures on which the conventional view is based. The latter are referred to as processed solar eclipse pictures because they are obtained with a radially graded density filter or by the merging of images taken at different exposures and subsequent numerical image processing. We illustrate the importance of quantitative studies in understanding imaging by comparing numerically processed images and isophotes from the 2006 solar eclipse. Familiar large-scale structures traditionally interpreted in terms of density as diverging polar coronal holes and converging coronal streamers are in fact features of

Type

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

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2008

Confidentiality

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

Name of the periodical

ASTROPHYSICAL JOURNAL

ISSN

0004-637X

e-ISSN

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Volume of the periodical

678

Issue of the periodical within the volume

2

Country of publishing house

US - UNITED STATES

Number of pages

3

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

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