Coronal Expansion and Solar Wind

Coronal Expansion and Solar Wind

Author: A. J. Hundhausen

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 250

ISBN-13: 3642654142

DOWNLOAD EBOOK

Little more than ten years have passed since spaceprobe-borne instruments con clusively demonstrated the existence of the solar wind. These observations con firmed the basic validity of a theoretical model, first proposed by E. N. Parker, predicting a continuous, rapid expansion of the solar corona. The subsequent decade has seen a tremendous growth in both the breadth and sophistication of solar wind observations; the properties of the interplanetary plasma near the orbit of the earth are now known in great detail. The theory of the coronal ex pansion has also been highly refilled both in the sense of including additional physical processes, and of treating more realistic (time-dependent and non spheri cally-symmetric) coronal boundary conditions. The present volume is an attempt to synthesize the solar wind observations and coronal expansion models from this decade of rapid development. The ultimate goal is, of course, the interpretation of observed solar wind phenomena as the effects of basic physical processes occurring in the coronal and interplanetary plasma and as the natural manifestations of solar properties and structures. This approach implies an emphasis upon the "large-scale" features revealed by the observations. It requires extensive use of the concepts and methods of fluid mechanics.


Coronal Mass Ejections

Coronal Mass Ejections

Author: Timothty Howard

Publisher: Springer Science & Business Media

Published: 2011-05-13

Total Pages: 263

ISBN-13: 1441987894

DOWNLOAD EBOOK

The book introduces the solar coronal mass ejection phenomena. This includes both those observed in the corona and those further from the Sun, known as interplanetary coronal mass ejections. We discuss the history and physics behind these phenomena, theories describing their launch and evolution, association with other solar eruptive phenomena, and methods employed for their detection and scientific data extraction. Instruments used for their study (past, present and future) are also discussed, along with their resulting space weather effects on Earth and other planets. The latter requires a description of the Earth’s magnetosphere, which is also included. Coronal Mass Ejections brings together solar physics, heliospheric physics, and magnetospheric physics, three traditionally separate fields of study. The content is accessible to beginning graduate students who are trying to master difficult fundamental concepts.


Space Weather and Coronal Mass Ejections

Space Weather and Coronal Mass Ejections

Author: Tim Howard

Publisher: Springer Science & Business Media

Published: 2013-08-28

Total Pages: 119

ISBN-13: 1461479754

DOWNLOAD EBOOK

Space weather has attracted a lot of attention in recent times. Severe space weather can disrupt spacecraft, and on Earth can be the cause of power outages and power station failure. It also presents a radiation hazard for airline passengers and astronauts. These “magnetic storms” are most commonly caused by coronal mass ejections, or CMES, which are large eruptions of plasma and magnetic field from the Sun that can reach speeds of several thousand km/s. In this SpringerBrief, Space Weather and Coronal Mass Ejections, author Timothy Howard briefly introduces the coronal mass ejection, its scientific importance, and its relevance to space weather at Earth and other planets. This title focuses on the latest advances in CME observation and modeling, including new results from the NASA STEREO and SDO missions. It also includes topical issues regarding space weather and the most recent observations and anecdotal examples of the impacts of space weather and CMEs.


Physics of the Solar Corona

Physics of the Solar Corona

Author: Markus Aschwanden

Publisher: Springer Science & Business Media

Published: 2006-01-30

Total Pages: 946

ISBN-13: 9783540307655

DOWNLOAD EBOOK

A thorough introduction to solar physics based on recent spacecraft observations. The author introduces the solar corona and sets it in the context of basic plasma physics before moving on to discuss plasma instabilities and plasma heating processes. The latest results on coronal heating and radiation are presented. Spectacular phenomena such as solar flares and coronal mass ejections are described in detail, together with their potential effects on the Earth.


The Phonology of Coronals

The Phonology of Coronals

Author: T. Alan Hall

Publisher: John Benjamins Publishing

Published: 1997-05-23

Total Pages: 188

ISBN-13: 9027275939

DOWNLOAD EBOOK

This study investigates the phonological behavior of coronal consonants, i.e. sounds produced with the tip or blade of the tongue. The analysis draws on data from over 120 languages and dialects. A definition of coronality is proposed that rejects the current view holding that palatals are positively marked for this feature. The feature [coronal] is assumed to be privative; the natural class of noncoronals is captured with the feature [peripheral], which dominates [labial] and [velar] in feature geometry. The book contains a detailed examination of the phonological patterning of segments belonging to each of the six coronal subplaces (i.e. interdental, dental, alveolar, retroflex, palatoalveolar, and alveolopalatal). A universal set of features is posited that accounts for these facts. Inventories of coronal consonants are treated in depth and impossible contrasts are accounted for with several if-then statements. The present study also contains a lengthy analysis of the phonology of rhotic consonants. A set of features is postulated which captures natural classes involving rhotics and nonrhotic consonants and which distinguishes the various stricture types among rhotics (i.e. trill vs. tap vs. approximant).


The Solar Corona

The Solar Corona

Author: Leon Golub

Publisher: Cambridge University Press

Published: 2010

Total Pages: 405

ISBN-13: 052188201X

DOWNLOAD EBOOK

Second edition graduate level textbook giving an up-to-date treatment of our understanding of the solar corona.