COE学術講演会のお知らせ
日時：２００３年１０月１７日（金）
１５：００〜１６：３０
場所：自然科学３号館６階セミナー室（６０９）

Dr. Ingrid Mann
Institut fuer Planetologie,
Westfaelische Wilhelms - Universitaet,
Muenster, Germany

The Heliosphere and the Meteoritic Complex


The near-solar cloud inside Earth orbit is the central region of the 
meteoritic complex that evolves from the small bodies of our 
planetary system. With its complexity of acting forces, physical 
processes, and interactions, it provides a unique opportunity for 
directly studying a cosmic dust-plasma cloud and processes therein 
that also appear in other cosmic environments. Dust particles 
produce the solar F-corona and the zodiacal light and sun-grazing 
comets are observed falling into the Sun. Yet, these astronomical 
phenomena reveal only a part of the dust physics in the inner solar 
system. Dust charging, surface reactions and dust destruction are 
not accessible to direct observations. The production of pick-up 
ions provides the connection of the meteoritic complex to other 
populations of heliospheric particles. Recent observations from 
spacecraft open up new possible scenarios as to the sources and 
composition of meteoritic material in the inner solar system.

判りやすく話していただきます。院生・学生の皆さんも、是非ご来場ください。

COEプログラム「惑星系の起源と進化」