The sun's surface and subsurface : investigating shape and irradiance ; [from a Summer School Devoted to the Gravitational Aspects of the Sun and Their Geophysical Consequences

Composed Of A Set Of Lectures And Tutorial Reviews, This Book Stems From A Summer School Devoted To The Gravitational Aspects Of The Sun And Their Geophysical Consequences. Contribitions Elaborate On The Gravitational Distortions Of The Sun Which Can Be Used To Gain Some Knowledge Of The Sun's Interior And Surface Phenomena But Which Also Influences The Sun's Irradience And Thus Ultimately The Earth's Climate. Last But Not Least, It Is Shown That These Small Distortions Constitute A Formidable Challenge To Solar Astrometry, And The Final Part Of The Book Describes The Observational Difficulties In Defining Unequivocally The Solar Diameter. A Guide To The Book -- The Figure Of The Sun, Astrophysical Consequences. A Tutorial -- Helioseismology: A Fantastic Tool To Probe The Interior Of The Sun -- Detection Of Solar Eigenmodes -- Solar Ultraviolet Irradiance: Origins. Measurements, And Models -- Focusing Of A Parallel Beam To Form A Point In The Particle Deflection Plane -- Atmospheric Turbulence And Solar Diameter Measurement -- Measurements Of The Sun`s Radius At Calern Observatory -- Solar Astrometry With The Astrolabe Of Santiago. Jean Pierre Rozelot (ed.). Includes Bibliographical References. A Guide to the Book....Pages 1-3 The Figure of the Sun, Astrophysical Consequences. A Tutorial....Pages 4-27 Helioseismology: A Fantastic Tool to Probe the Interior of the Sun....Pages 31-67 Detection of Solar Eigenmodes....Pages 68-105 Solar Ultraviolet Irradiance: Origins, Measurements, and Models....Pages 109-128 Total Solar and Spectral Irradiance Variations from Near-UV to Infrared....Pages 129-155 Atmospheric Turbulence and Solar Diameter Measurement....Pages 159-180 Solar Astrometry with the Astrolabe of Santiago....Pages 181-195 Measurements of the Sun’s Radius at Calern Observatory....Pages 196-216 This book grew out of research on the size of the Sun and may be summarized in a single sentence: "How big is the Sun?".