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Author: Alan D. Johnstone Publisher: American Geophysical Union ISBN: Category : Science Languages : en Pages : 388
Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 61. Since Explorer 1 discovered the Earth's radiation belts more than thirty years ago, there have been many opportunities to show the value of in-situ observations over remote-sensing when it comes to an understanding of the space plasma environment. When one of the inner solar system's regular visitors was due to make its once-in-a-lifetime appearance in 1986 the opportunity was too important to be missed. For not only is comet Halley one of the most reliable comets it is also nearly two orders of magnitude larger than any other comet with a known period. Well before there was any visible trace of Halley's comet in the night sky, three of the big four space agencies were banking on that reliability and were preparing five spacecraft to make the journey to intercept the comet. Such activity acted as a spur to the ingenuity of the fourth agency who found a way to redirect one of their long-serving spacecraft and to win the race to be the first to a comet, albeit the smaller, and at the time virtually unknown, Giacobini-Zinner. Although a healthy spirit of competition infused the scientific and engineering teams working on the project at various levels, what mattered in the end was the global cooperation between the agencies and many ground-based observers which for example, enabled Giotto to reach the comet with one-tenth of the targetting error that had originally been predicted.
Author: Alan D. Johnstone Publisher: American Geophysical Union ISBN: Category : Science Languages : en Pages : 388
Book Description
Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 61. Since Explorer 1 discovered the Earth's radiation belts more than thirty years ago, there have been many opportunities to show the value of in-situ observations over remote-sensing when it comes to an understanding of the space plasma environment. When one of the inner solar system's regular visitors was due to make its once-in-a-lifetime appearance in 1986 the opportunity was too important to be missed. For not only is comet Halley one of the most reliable comets it is also nearly two orders of magnitude larger than any other comet with a known period. Well before there was any visible trace of Halley's comet in the night sky, three of the big four space agencies were banking on that reliability and were preparing five spacecraft to make the journey to intercept the comet. Such activity acted as a spur to the ingenuity of the fourth agency who found a way to redirect one of their long-serving spacecraft and to win the race to be the first to a comet, albeit the smaller, and at the time virtually unknown, Giacobini-Zinner. Although a healthy spirit of competition infused the scientific and engineering teams working on the project at various levels, what mattered in the end was the global cooperation between the agencies and many ground-based observers which for example, enabled Giotto to reach the comet with one-tenth of the targetting error that had originally been predicted.
Author: E.R. Priest Publisher: Springer Science & Business Media ISBN: 9780792308799 Category : Science Languages : en Pages : 574
Book Description
Much of the excitement in modern Solar Physics has come from the realisation that the Sun is a plasma and that this plasma is interacting with the magnetic field in a wide variety of subtle ways. As well as being of great interest in their own right the observed plasma phenomena on the Sun are of much wider importance, since they reveal to us details of basic phenomena that are expected to be occurring throughout the universe. It was with this in mind that 173 solar physicists from 17 countries gathered together in Bangalore with an air of anticipation. We were not disappointed as we received the warmest of welcomes from our graceful and charming host,Vinod Krishan. She and her colleagues worked tirelessly to make our stay a most memorable one and to ensure that the meeting ran with calm and efficiency. In addition to being stimulated by an excellent series of talks on the up-to-the minute advances in our subject, it was a pleasure to make new friendships from so many countries and to learn, in particular, of the Solar Physics being done in India which has a great tradition and is of a high standard. Furthermore, we enjoyed hearing about Indian culture and appreciating its beauty, especially on our day's tour into the countryside to visit some Hindu and Jain temples.
Author: R.L. Newburn Publisher: Springer Science & Business Media ISBN: 9780792311652 Category : Science Languages : en Pages : 692
Book Description
In Part Based on Reviews Presented at the 121st Colloquium of the International Astronomical Union, held in Bamberg, Germany, April 24-28, 1989
Author: Jörg Büchner Publisher: Springer Science & Business Media ISBN: 9401142033 Category : Science Languages : en Pages : 755
Book Description
In May 1998 a hundred renowned scientists from 20 different countries met at the Max-Planck-Institut für Aeronomie to communicate their latest results and ideas in astrophysical and space plasma, as a follow-up to previous similar meetings which were held in Varenna, Abastumai, Potsdam, Toki and Guaruja. The main papers emerging from this meeting are collected in this volume. They deal with fundamental plasma phenomena, particle and radiation processes in astrophysics and space physics as the origin of magnetic activity, the basic mechanisms of particle acceleration and plasma heating common to plasma in galaxies and at the sun as well as in planetary magnetospheres. New observational results from YOHKOH, SOHO and other missions are presented. Using these, the basic physical processes leading to coronal heating and solar/stellar wind acceleration are discussed. Other topics are the microphysics of shock waves and transport phenomena in collisionless plasmas and the physics of thin plasma boundaries. The volume also treats the ionic composition of plasma and dust in the Universe and their observability in the solar system. A CD-ROM is attached which adds a valuable multimedia component, illuminating results of observations, theory and simulations. Everyone interested in astrophysical plasmas, its radiation and charged particle aspects, and advanced or even beginning students will find references to nearly all modern aspects of plasma astrophysics and space physics as well as an overview of current research results.
Author: Laurel L. Wilkening Publisher: University of Arizona Press ISBN: 9780816507696 Category : Science Languages : en Pages : 784
Book Description
Over forty authorities present sections on the nucleus, dust, coma, and tails of comets, along with sections on their origin, and relationships to other solar system bodies. . . . An excellent book.ÑSpace News "The volume is highly recommended to all interested in comets and the Solar System."ÑJournal of the British Astronomical Association "A good representation of the studies that are currently being done on comets, and it is an extremely good source of information on a wide variety of topics."ÑInternational Comet Quarterly "Extremely well-written and informative. . . . A must for library collections."ÑThe Observatory
Author: Frank Verheest Publisher: Springer Science & Business Media ISBN: 9401099456 Category : Science Languages : en Pages : 274
Book Description
In this volume a thorough review is given of waves in dusty plasmas, a fascinating new domain combining plasmas and charged dust, two omnipresent ingredients of the Universe. Spokes and braids observed in the rings of Saturn cannot be explained by gravitation alone, but need the presence of charged dust. Other examples abound, as in zodiacal light, noctilucent clouds, comets and molecular clouds. After discussing charging mechanisms, supported by exciting new experiments, and space observations, the book describes extensions of known plasma modes covering the low frequencies typical for charged dust. Mixing detailed theoretical steps with summaries of expert contributions, a systematic multi-species treatment puts the literature in perspective, suitable also for newcomers. Typical complications like fluctuating dust charges, self-gravitational effects, and size distributions are dealt with, before ending with an outlook to future work and open questions. In this way, experts as well as interested newcomers will find a reliable guide, not just a compendium.
Author: M. Festou Publisher: University of Arizona Press ISBN: 0816524505 Category : Science Languages : en Pages : 780
Book Description
The study of comets is a field that has seen tremendous advances in recent years, far surpassing the knowledge reflected in the original Comets volume published as part of the Space Science Series in 1982. This new volume, with more than seventy contributing authors, represents the first complete overview of comet science in more than a decade and contains the most extensive collection of knowledge yet assembled in the field. Comets II situates comet science in the global context of astrophysics for the first time by beginning with a series of chapters that describe the connection between stars and planets. It continues with a presentation of the formation and evolution of planetary systems, enabling the reader to clearly see the key role played in our own solar system by the icy planetesimals that were the seeds of the giant planets and transneptunian objects. The book presents the key results obtained during the 1990s, in particular those collected during the apparition of the exceptional comets C/Hyakutake and C/Hale-Bopp in 1996-1997. The latest results obtained from the in situ exploration of comets P/Borrelly and P/Wild 2 are also discussed in detail. Each topic of is designed to be accessible to students or young researchers looking for basic, yet detailed, complete and accurate, information on comet science. With its emphasis on the origin of theories and the future of research, Comets II will enable scientists to make connections across disciplinary boundaries and will set the stage for discovery and new understanding in the coming years.
Author: Alan D. Johnstone
Author: Alan D. Johnstone
Author: E.R. Priest
Author: D. G. Sibeck
Author: Ying-Dong Jia
Author: R.L. Newburn
Author: Jörg Büchner
Author: S. Böhme
Author: Laurel L. Wilkening
Author: Frank Verheest
Author: M. Festou