Stellar Pulsation Nonlinear Studies

Mine Takeuti, Dimitar D. Sasselov. STELLAR PULSATIONNONLINEAR STUDIES ASTROPHYSICS AND SPACE SCIENCE LIBRARY VOLUME 257 EDITORIAL BOARD Chairman.

Stellar Pulsation   Nonlinear Studies

Stellar pulsations provide a complex system in stars. This complexity is studied by analyzing the non-sinusoidal, semi-regular, or irregular light curves. This unique volume summarizes the application of recent theoretical results obtained from stellar pulsation studies. In addition, the latest developments in hydrodynamic simulations are discussed. A historical sketch of the study of beat Cepheids, first known for their variable amplitudes, is given as an introduction to the book. This introduction clearly demonstrates how complicated the study of variable stars can be, and therefore challenges and invites the reader to study the entire book.

High Resolution Infrared Spectroscopy in Astronomy

... M. , Carter , B.D , Cameron , A.C. , 1997 , MNRAS , 291 , 658 Kovacs , G. , 2001 , Stellar pulsation - nonlinear studies , Eds .: Mine Takeuti and Dimitar D. Sasselov , Astrophysics and space science library , Volume 257 , p .

High Resolution Infrared Spectroscopy in Astronomy

Two specialized new instruments for ESO's VLT, VISIR and CRIRES, spawned the idea for this workshop. CRIRES is a dedicated very high resolution infrared spectrograph; VISIR features a high resolution spectroscopic mode. Together, the instruments combine the sensitivity of an 8m-telescope with the now well-established reliability of VLT-facility instruments. High resolution here means that lines in cool stellar atmospheres and HII-regions can be resolved. The astrophysical topics discussed in this rather specialized workshop range from the inner solar system to active galactic nuclei. There are many possibilities for new discoveries with these instruments, but the unique capability, which becomes available through high-resolution infrared spectroscopy, is the observation of molecular rotational-vibrational transitions in many astrophysical environments. Particularly interesting and surprising in this context, many papers on modeling and laboratory spectroscopy at the workshop appear to indicate that astronomical observations are lagging a bit behind in this field. The papers are an interesting mix of reports from existing high resolution facilities, reports on modeling efforts of synthetic spectra and reports on laboratory spectra. In this sense, a fruitful exchange between molecular physics and astronomy was again accomplished and is documented in this volume.

Multielement System Design in Astronomy and Radio Science

Previously published in Astrophysics and Space Science Library book series: Volume 265: Post-AGB Objects as a Phase of ... June 2001 Volume 257: Stellar Pulsation - Nonlinear Studies Editors: Mine Takeuti, Dimitar D. Sasselov Hardbound, ...

Multielement System Design in Astronomy and Radio Science

The multielement systems have been widely used in many fields of astron omy and radio science in the last decades. This is caused by the increasing demands on the resolution and sensitivity of such systems over the wide range of the electromagnetic wavelengths, from gamma up to radio. The ground-based optical and radio interferometers, gamma-ray and X-ray or bital telescopes, antenna arrays of radio telescopes and also some other radio devices belong to scientific instruments using multielement systems. There fore, the current problems of the optimal construction of such systems, or precisely, those of searching for the best arrangement of the elements in them, were formulated. A rather large number of scientific papers, including those of the authors, is devoted to these problems, and we believe that the time has come to integrate the basic results of the papers into the mono graph. The offered book consists of three parts. The first part is concerned with the optimal synthesis of optical and radio interferometers of various types and purposes; the synthesis of non-equidistant antenna arrays is con sidered in the second part; and the methods for the construction of coded masks for X-ray and gamma-ray orbital telescopes are expounded in the third one. Since in the text combinatorial constructions which are little known to astronomers are used, the necessary information is given in the appendices. Various tables containing the parameters of the systems consid ered are also represented.

Plasma Astrophysics

Previously published in Astrophysics and Space Science Library book series: Volume 273: Lunar Gravimetry Author: Rune ... June 2001 Volume 257: Stellar Pulsation - Nonlinear Studies Editors: Mine Takeuti, Dimitar D. Sasselov Hardbound, ...

Plasma Astrophysics

This textbook is intended as an introduction to the physics of solar and stellar coronae, emphasizing kinetic plasma processes. It is addressed to observational astronomers, graduate students, and advanced undergraduates without a ba- ground in plasma physics. Coronal physics is today a vast field with many different aims and goals. So- ing out the really important aspects of an observed phenomenon and using the physics best suited for the case is a formidable problem. There are already several excellent books, oriented toward the interests of astrophysicists, that deal with the magnetohydrodynamics of stellar atmospheres, radiation transport, and radiation theory. In kinetic processes, the different particle velocities play an important role. This is the case when particle collisions can be neglected, for example in very brief phenomena – such as one period of a high-frequency wave – or in effects produced by energetic particles with very long collision times. Some of the most persistent problems of solar physics, like coronal heating, shock waves, flare energy release, and particle acceleration, are likely to be at least partially related to such p- cesses. Study of the Sun is not regarded here as an end in itself, but as the source of information for more general stellar applications. Our understanding of stellar processes relies heavily, in turn, on our understanding of solar processes. Thus an introduction to what is happening in hot, dilute coronae necessarily starts with the plasma physics of our nearest star.

The Nature of Unidentified Galactic High Energy Gamma Ray Sources

Published in ASTROPHYSICS AND SPACE SCIENCE LIBRARY Volume 262 : Whistler Phenomena Short Impulse Propagation Csaba Ferencz ... ISBN 0-7923-6822-3 , June 2001 Volume 257 : Stellar Pulsation - Nonlinear Studies Mine Takeuti , Dimitar D.

The Nature of Unidentified Galactic High Energy Gamma Ray Sources

This is the first book dedicated to unidentified celestial gamma-ray sources. The launch of the Compton Gamma-Ray Observatory allowed the first all-sky surveys in gamma-rays, the most energetic form of electromagnetic radiation. The Energetic Gamma-Ray Experiment Telescope discovered more than 270 sources of high-energy protons, more than half of which are not identified with known celestial objects. Most of these objects belong to the Milky Way and more than one class of sources are present among the unidentified sources. Unravelling the nature of all these objects requires the combination of different sorts of instruments, like radio telescopes, optical telescopes, and X-ray satellites, together with the next generations of space and ground-based gamma-ray telescopes. This book presents the current knowledge on the subject and outlines strategies for identification of objects with current astronomical facilities. It provides a forward look by outlining the prospects of future generation gamma-ray telescopes. The contributions are detailed and represent valuable material for undergraduate and postgraduate astrophysics students and researchers in the field.

Mechanics of Turbulence of Multicomponent Gases

Previously published in Astrophysics and Space Science Library book series: Volume 265: Post-AGB Objects as a Phase of Stellar ... and EHD Author: Hiroshi Kikuchi Hardbound, ISBN 0-7923-6822-3, June 2001 Volume 257: Stellar Pulsation ...

Mechanics of Turbulence of Multicomponent Gases

Space exploration and advanced astronomy have dramatically expanded our knowledge of outer space and made it possible to study the indepth mechanisms underlying various natural phenomena caused by complex interaction of physical-chemical and dynamical processes in the universe. Huge breakthroughs in astrophysics and the planetary s- ences have led to increasingly complicated models of such media as giant molecular clouds giving birth to stars, protoplanetary accretion disks associated with the solar system’s formation, planetary atmospheres and circumplanetary space. The creation of these models was promoted by the development of basic approaches in modern - chanics and physics paralleled by the great advancement in the computer sciences. As a result, numerous multidimensional non-stationary problems involving the analysis of evolutionary processes can be investigated using wide-range numerical experiments. Turbulence belongs to the most widespread and, at the same time, the most complicated natural phenomena, related to the origin and development of organized structures (- dies of different scale) at a definite flow regime of fluids in essentially non-linear - drodynamic systems. This is also one of the most complex and intriguing sections of the mechanics of fluids. The direct numerical modeling of turbulent flows encounters large mathematical difficulties, while the development of a general turbulence theory is hardly possible because of the complexity of interacting coherent structures. Three-dimensional non-steady motions arise in such a system under loss of la- nar flow stability defined by the critical value of the Reynolds number.

Organizations and Strategies in Astronomy

Previously published in Astrophysics and Space Science Library book series: • Volume 273: Lunar Gravimetry Author: Rune Floberghagen ... ISBN 0-7923-6822-3, June 2001 Volume 257: Stellar Pulsation - NOnlinear Studies Editors: Mine Takeuti,

Organizations and Strategies in Astronomy

We have arrived at the third volume of this useful series on Organiza tions and Strategies in Astronomy (OSA). It contains seventeen articles on a wide range of topics, from virtual observatories, astronomy organizations in various communities (Czech Republic, Slovak Republic, South Africa), and the role of ground stations in space observatories, to quality assurance in UK higher education. In this foreword, I shall give some views on ideas expressed in this volume, in particular from my personal experience when I was project officer for the Canada-France-Hawaii Telescope (CFHT). Let me first remind readers that present and future astronomy is in creasingly dependent on high-level management. Not everybody knows that the scheduling of the Hubble Space Telescope is performed by a neural network software called SPIKE, described in the stimulating workshop New Observing Modes for the Next Centuryl, partly reported in OSA Volume II by 1. Robson. New observing facilities, in space or on the ground, are so complex that they need highly qualified engineers and rigorous management procedures. Each observing hour on the Very Large Telescope (VLT) fa cility is worth about EUR 7,000, including the amortization of the capital expenses over 30 years. This does not leave much room for amateurism, neither in the time allocation procedures, nor in the daily telescope control.

The Sun and Space Weather

Previously published in Astrophysics and Space Science Library book series: Volume 273: Lunar Gravimetry Author: Rune ... June 2001 Volume 257: Stellar Pulsation - Nonlinear Studies Editors: Mine Takeuti, Dimitar D. Sasselov Hardbound, ...

The Sun and Space Weather

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 more detailed information about the topics may be found. 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.

Modern Theoretical and Observational Cosmology

Previously published in Astrophysics and Space Science Library book series : Volume 273 : Lunar Gravimetry Author : Rune Floberghagen Hardbound , ISBN 1-4020-0544 - X , May 2002 Volume ... Volume 257 : Stellar Pulsation - Nonlinear Studies.

Modern Theoretical and Observational Cosmology

Proceedings of the second Hellenic Cosmology Meeting, held in the National Observatory of Athens (Penteli, 19-20 April 2001)

Merging Processes in Galaxy Clusters

Previously published in Astrophysics and Space Science Library book series: Volume 269:Mechanics of Turbulence of ... June 2001 Volume 257: Stellar Pulsation - Nonlinear Studies Editors: Mine Takeuti, Dimitar D. Sasselov Hardbound, ...

Merging Processes in Galaxy Clusters

Mergers are the mechanisms by which galaxy clusters are assembled through the hierarchical growth of smaller clusters and groups. Major cluster mergers are the most energetic events in the Universe since the Big Bang. Many of the observed properties of clusters depend on the physics of the merging process. These include substructure, shock, intra cluster plasma temperature and entropy structure, mixing of heavy elements within the intra cluster medium, acceleration of high-energy particles, formation of radio halos and the effects on the galaxy radio emission. This book reviews our current understanding of cluster merging from an observational and theoretical perspective, and is appropriate for both graduate students and researchers in the field.

Lunar Gravimetry

Volume 269:Mechanics of Turbulence of Multicomponent Gases Authors: Mikhail Ya. ... ISBN 0-7923-6822-3, June 2001 • Volume 257: Stellar Pulsation - Nonlinear Studies Editors: Mine Takeuti, Dimitar D. Sasselov Hardbound, ...

Lunar Gravimetry

Lunar Gravimetry: Revealing the Far-Side provides a thorough and detailed discussion of lunar gravity field research and applications, from the initial efforts of the pre-Apollo and Luna eras to the dedicated gravity mapping experiments of the third millennium. Analysis of the spatial variations of the gravity field of the Moon is a key selenodetic element in the understanding of the physics of the Moon's interior. Remarkably, more than forty years after the initial steps in lunar exploration by spacecraft, the global gravity field still remains largely unknown, due to the limitations of standard observations techniques. As such, knowledge of the high-accuracy and high-resolution gravity field is one of the remaining unsolved issues in lunar science.

Organizations and Strategies in Astronomy

Previously published in Astrophysics and Space Science Library book series : . > Volume 273 : Lunar Gravimetry Author : Rune Floberghagen ... ISBN 0-7923-6822-3 , June 2001 O > . > Volume 257 : Stellar Pulsation - Nonlinear Studies.

Organizations and Strategies in Astronomy


Radial and Nonradial Pulsations as Probes of Stellar Physics

IAU Colloquium 185 : Proceedings of a Colloquium Held at Institute of Astronomy, Catholic University of Leuven, Leuven, ... A & A , submitted Kolláth , Z. & Buchler , J. R. 2001 , in Astrophysics and Space Science Library , Vol . 257 ...

Radial and Nonradial Pulsations as Probes of Stellar Physics


Variable Stars in the Local Group

... J.F. , Semel , M. , Carter , B.D , Cameron , A.C. 1997 , MNRAS , 291 , 658 Kovacs , G. 2001 , in Stellar pulsation- nonlinear studies , eds . M. Takeuti and D.D. Sasselov , Astrophysics and Space Science library , Vol . 257 , p .

Variable Stars in the Local Group


Books in Print

Books in Print


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