Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002assl..277.....h&link_type=abstract
The Sun and Space Weather. By A. Hanslmeier, Institute for Geophysics, Astrophysics and Meteorology, University of Graz, Austria
Astronomy and Astrophysics
Astrophysics
7
Scientific paper
What are the terrestrial effects of solar activity and the solar activity cycle? The modern term used for solar terrestrial relations is `Space Weather'. This term describes all external effects on the space environment of the Earth and the Earth's atmosphere. The main driver for space weather is our Sun. Explosive events on the Sun that are modulated by the solar activity cycle lead to enhanced particle emission and short wavelength radiation. This affects satellites: for example surface charging and enhanced drag forces on satellites in low Earth orbit can cause satellite crashes etc. Enhanced radiation also poses a problem for astronauts, especially for extravehicular activities. Another source of space weather effects is space debris and micrometeoroids. Since the Sun is the main source of space weather effects, the first part of the book is devoted to a general introduction to the physics of the Sun. A better understanding of the phenomena underlying solar activity is also important for prediction of solar outbursts and thus for establishing alert systems for space missions and telecommunication systems. The book contains the following topics: * possible influence of the Sun on the Earth's climate; * the effects of radiation on humans in space and the expected radiation dose from various solar events; * disturbances of the Earth's ionosphere and the implications of radio communication at different wavelength ranges; * possible hazardous asteroids and meteoroids and their detection; and * space debris and special shielding of spacecraft. In the cited literature the reader can find more detailed information about the topics. This book provides an introduction and overview of modern solar-terrestrial physics for students as well as for researchers in the field of astrophysics, solar physics, geophysics, and climate research. Link: http://www.wkap.nl/prod/b/1-4020-0684-5
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