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These Proceedings result from the papers and discussions of the
U.S.-Japan Seminar "Recent Advances in the Understanding of Solar
Flares" held in Tokyo October 5-8, 1982. The meeting was sponsored
jointly by the Japan Society for the Promotion of Science and the
u.S. National Science Foundation. The principal aim of the meeting
was to obtain the most up-to-date physical picture of solar flares
by bringing together results from the recent observations by the
Solar Maximum Mission (SMM) and HINOTORI satellites, together with
other satellite data and ground-based data at both optical and
radio wavelengths. These data cover the recent maximum of the solar
activity cycle. The SMM and HINOTORI introduced a new dimension in
flare observations by carrying out the first hard X-ray imaging
observations, and the organizers especially felt that an intense
discussion of the significance of these results in the context of
flare theories would be important. Starting with an introductory
presentation of the characteristics of the instruments on board the
satellites, the sessions of the first day and the beginning of the
second dealt mainly with energy transport in flares and with .the
formation process of the hot plasma which is .
The IAU Colloquium No. 143 "The Sun as a Variable Star: Solar and
Stellar Irradiance Variations" was held on June 20 - 25, 1993 at
the Clarion Harvest House, Boulder, Colorado, USA. The main
objective of this Colloquium was to review the most recent results
on the observations, theoretical interpreta tions, and empirical
and physical models of the variations observed in solar and stellar
irradiances. A special emphasis of the Colloquium was to discuss
the results gained on the climatic impact of solar irradiance
variability. The study of changes in solar and stellar irradiances
has been of high interest for a long time. Determining the absolute
value of the luminosity of stars with different ages is a crucial
question for the theory of stellar evolu tion and energy production
of stellar interiors. Observations of the temporal changes of solar
and stellar irradiances - in the entire spectral band and at
different wavelengths - provide an additional tool for studying the
physical processes below the photosphere and in the solar- stellar
atmospheres. Since the Sun's radiative output is the main driver of
the physical processes with in the Earth's atmosphere, the study of
irradiance changes is an extremely important issue for climatic
studies as well. Climatic models show that small, but persistent
changes in solar irradiance may influence the Earth's climate.
These are the Proceedings of Colloquium No. 153 of the
International Astro nomical Union, held at Makuhari near Tokyo on
May 22 - 26, 1995, and hosted by the National Astronomical
Observatory. This meeting was intended to be an interdisciplinary
meeting between re searchers of solar and stellar activity, in
order for them to exchange the newest information in each field.
While each of these areas has seen remarkable advances in recent
years, and while the researchers in each field have felt that
information from the other's domain would be extremely useful in
their own work, there have not been very many opportunities for
intensive exchanges of information between these closely related
fields. We therefore expected much from this meeting in pro viding
stellar researchers with new results of research on the
counterparts of their targets of research, spatially and
temporarily resolved, as observed on the Sun. Likewise we hoped to
provide solar researchers with new results on gigantic ver sions of
their targets of research under the very different physical
circumstances on other active stars. It was our greatest pleasure
that we had wide attendance of experts and active researchers of
both research fields from all over the world. This led to extremely
interesting talks and very lively discussions, thereby stimulating
the exchange of ideas across the fields.
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The Sun as a Variable Star: Proceedings of the 143rd Colloquium of the International Astronomical Union Held in the Clarion Harvest House, Boulder, Colorado, June 20-25, 1993 (Hardcover, 2nd Revised edition)
Judit M. Pap, Etc, Claus Frohlich, Hugh S. Hudson, W. Kent
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R2,737
Discovery Miles 27 370
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Ships in 10 - 15 working days
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The papers in this volume aim to represent the most up-to-date
research contributions on the observations, theoretical
interpretations, and empirical and physical models of variations
observed in solar and stellar irradiances, as well as on
Sun-climate connections. Both theoretical studies and irradiance
observations show that the energy output of the Sun and solar-type
stars varies, changing on time scales related to the short-term
surface manifestations of solar/stellar magnetic activity as well
as long-term modulations driven by processes in the interiors of
the stars. Papers presented in this book point out that at the
Earth these variations influence the terrestrial climate, radiative
environment and upper atmospheric chemistry.
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