Advances in Solar Research at Eclipses from Ground and from Space

1. Front Matter

   Pages i-xviii

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2. Eclipses from the Standpoint of Celestial Mechanics

   • Magda Stavinschi

   Pages 1-22

3. The Williams College Expedition to Ramnicu Valcea

   • Jay M. Pasachoff

   Pages 23-30

4. Heliospheric Extent of the Coronal Phenomena

   • G. Mariş

   Pages 31-47

5. The Solar Corona: White Light Polarization and Modelling of the Large Scale Electron Density Distribution

   • P. Cugnon, J.-R. Gabryl

   Pages 49-66

6. Observing the Solar Magnetic Field

   • I. S. Kim

   Pages 67-83

7. Solar Activity

   • Z. Mouradian

   Pages 85-104

8. New Views of Active Regions, Flares and CME’s from Space

   • Y. Uchida

   Pages 105-147

9. Modeling the Evolution of Solar Magnetic Fields

   • K. Galsgaard

   Pages 149-170

10. Non-LTE Radiation Processes: Application to the Solar Corona

    • S. Collin

    Pages 171-200

11. Models of the Solar Atmosphere

    • P. Heinzel

    Pages 201-220

12. Inversion of Line Profiles and Solar Fine Structures

    • P. Mein

    Pages 221-244

13. Sounding the Solar Interior

    • W. A. Dziembowski

    Pages 245-264

14. What we Know about the Solar Interior

    • J.-P. Zahn

    Pages 265-288

15. Theory of Solar Luminosity Variations

    • H. C. Spruit

    Pages 289-305

16. Back Matter

    Pages 307-310

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The aim of this Advanced Study Institute was to give an account on the most recent results obtained in solar research. Bucharest was chosen to host it, because the capital city of Romania was located right in the middle of the totality path of the last eclipse of the millennium, on 11th August 1999; furthermore the phenomenon was close to reach there its longest duration: 2m 23s. Such a total eclipse is not only a very spectacular event which draws the crowds: to astronomers, solar eclipses still offer the best conditions for observing the lower part of the corona. The Sun plays a crucial role in our very existence. It was responsible for the formation of the Earth, and rendered this planet fit to host living beings, providing the right amount of heat, and this for a long enough span of time. Quite understandably, it has always been a prime target of human curiosity, and more recently one of scientific investigation. During the last century, it was realized that the Sun is a star like billions of others; we learned since that it draws its energy from the nuclear fusion of hydrogen, and we are now able to estimate its age and life expectancy.

• Celestial mechanics
• Corona
• Variation
• solar
• solar activity
• solar physics
• sun

• Observatoire de Paris, Meudon, France

  Jean-Paul Zahn

• Astronomical Institute of the Romanian Academy, Bucharest, Romania

  Magda Stavinschi

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