Structure and Development of Solar Active Regions

1. Front Matter

   Pages I-XVII

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2. Welcome by the Hungarian Academy of Sciences

   1. Welcome by the Hungarian Academy of Sciences

      • L. Detre

      Pages 1-1

3. Preface and Introduction

   1. Preface and Introduction

      • K. O. Kiepenheuer

      Pages 3-9

4. General Development of an Active Region

   1. Front Matter

      Pages 11-11

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   2. Patterns of Active Region Magnetic Field Development

      • V. Bumba, R. Howard, M. J. Martres, I. Soru-Iscovici

      Pages 13-24

   3. Origine des Régions Actives Solaires ‘Anormales’

      • M. J. Martres

      Pages 25-32

   4. Magnetic Classification of Active Regions

      • Sara F. Smith, Robert Howard

      Pages 33-42

   5. Development of Magnetic Fields in Active Regions

      • E. Tandberg-Hanssen, C. Porter

      Pages 43-46

   6. The Balance of Magnetic Fluxes in Active Regions

      • Jan Olof Stenflo

      Pages 47-49

   7. On the Birth of Some Proton-Flare Regions

      • T. Fortini, M. Torelli

      Pages 50-55

   8. Some Patterns in the Development of Centers of Solar Activity, 1962–66

      • Helen W. Dodson, E. Ruth Hedeman

      Pages 56-63

   9. Last Phases of Development of Active Regions

      • V. Bumba, J. Kleczek, J. Olmr, B. Růžičková-Topolová, J. Sýkora

      Pages 64-67

   10. On Some Properties of the Velocity Field in a Developed Active Region

       • S. I. Gopasyuk

       Pages 68-69

   11. The Migration of Sunspot Activity Along Solar Meridians and Parallels

       • L. Dezső, O. Gerlei, Ágnes Kovács

       Pages 70-76

   12. Chromospheric Explosions and Satellite Sunspots

       • David M. Rust

       Pages 77-84

   13. Study of an Active Region of the Sun During Three Rotation Periods

       • Constantin J. Macris, T. J. Prokakis

       Pages 85-91

5. Theoretical Aspects

   1. Front Matter

      Pages 93-93

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   2. Magnetohydrodynamics of an Active Region

      • H. U. Schmidt

      Pages 95-107

   3. Concentration of Magnetic Fields in the Deep Convection Zone

      • G. W. Simon, N. O. Weiss

      Pages 108-111

   4. Oscillatory Modes of Energy Transport in Solar Magnetic Regions

      • R. E. Danielson, B. D. Savage

      Pages 112-125

K. O. KIEPENHEUER ( Fraunhofer Institut, Freiburg i. Br., Germany) The present symposium, to my knowledge the largest ever held in the field of solar research (170 astronomers from 21 countries) was held in the building of the Hun­ garian Academy of Sciences in Budapest from September 4 to 8, 1967. It was the 35th symposium organized and sponsored by the International Astronomical Union. The majority of participants were financedfrom national sources. The Organizing Commit­ tee consisted of K. O. Kiepenheuer (Chairman), L. Davis, L. Dezso (Local Organizer), A.D. Fokker, R. Michard, A.B. Severny, H.J. Smith, Z. Svestka, and H. Tanaka. In order to ensure prompt publication, the manuscripts had to be supplied by the authors 1 month after the meeting. The discussions have been recorded on tape. Their reproduction in this book, however, is based almost completely on the contributors' writing down their comments and questions on the spot. Two special projects have been reported and discussed shortly during the sym­ posium: The world wide project 'Cooperative Study of Solar Active Regions' (CSSAR) organized by Dr. R. Michard, under the auspices of the IAU, which has put at the disposal of our solar community a precious observing material on Active Regions over a period of 6 months.

• Chromosphere
• Corona
• Photosphere
• Planet
• Solar
• Solar flare
• Sun
• Sunspot

• Fraunhofer Institut, Freiburg im Br., Germany

  K. O. Kiepenheuer

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