Astronomical Masers

Astronomical Masers PDF Author: M Elitzur
Publisher: Springer Science & Business Media
ISBN: 9401123942
Category : Science
Languages : en
Pages : 363

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Book Description
One of the most spectacular discoveries of molecular astronomy has been the detection of maser emission. The same radiation that is generated in the laboratory only with elaborate, special equipment occurs naturally in interstellar space. This intense radiation probes the smallest structures that can be studied with radio telescopes. By a fortunate coincidence maser radiation is generated in both star forming regions and the envelopes of late-type stars. The early and late stages in the life of a star are considered to be the most interesting phases of stellar evolution. Maser emission has also been detected in external galaxies. This book provides an extensive coverage of the interstellar maser phenomenon. A precondition for maser action is departure from thermal equilibrium. The book therefore starts with a detailed coverage of the basic background concepts required for an understanding of line formation and radiative transfer. It goes on to describe the theoretical and phenomenological aspects of interstellar masers, their formation sites and the inversion mechanisms. The book will interest active researchers in astronomy and astrophysics as well as in other areas of physics. It is suitable as a textbook in a graduate course and will enable a graduate student to embark on research projects in this exciting area in particular, and molecular radio astronomy in general.

Astronomical Masers

Astronomical Masers PDF Author: M Elitzur
Publisher: Springer Science & Business Media
ISBN: 9401123942
Category : Science
Languages : en
Pages : 363

Get Book

Book Description
One of the most spectacular discoveries of molecular astronomy has been the detection of maser emission. The same radiation that is generated in the laboratory only with elaborate, special equipment occurs naturally in interstellar space. This intense radiation probes the smallest structures that can be studied with radio telescopes. By a fortunate coincidence maser radiation is generated in both star forming regions and the envelopes of late-type stars. The early and late stages in the life of a star are considered to be the most interesting phases of stellar evolution. Maser emission has also been detected in external galaxies. This book provides an extensive coverage of the interstellar maser phenomenon. A precondition for maser action is departure from thermal equilibrium. The book therefore starts with a detailed coverage of the basic background concepts required for an understanding of line formation and radiative transfer. It goes on to describe the theoretical and phenomenological aspects of interstellar masers, their formation sites and the inversion mechanisms. The book will interest active researchers in astronomy and astrophysics as well as in other areas of physics. It is suitable as a textbook in a graduate course and will enable a graduate student to embark on research projects in this exciting area in particular, and molecular radio astronomy in general.

Astrophysical Masers and Their Environments (IAU S242)

Astrophysical Masers and Their Environments (IAU S242) PDF Author: International Astronomical Union. Symposium
Publisher: Cambridge University Press
ISBN: 9780521874649
Category : Nature
Languages : en
Pages : 564

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Book Description
Astrophysical masers, naturally occurring microwave and radio-wave emissions, provide an important tool to investigate astrophysical environments. Several thousand maser sources have been observed in the interstellar medium and star formation regions, in the expanding winds from evolved stars, in the compressed shells of supernovae remnants, in comets and in the centers of galaxies. Masers are also useful for studying the structure and dynamics of our own galaxy, while masers in other galaxies are now used for cosmological studies and studies of galactic nuclei. This volume contains the latest research on the topic as presented at IAU Symposium 242, only the third international symposium on astrophysical masers. Over 125 astronomers from 18 different countries gathered in Alice Spring, Australia, for discussions on maser research.

Astrophysical Masers (IAU S336)

Astrophysical Masers (IAU S336) PDF Author: International Astronomical Union. Symposium
Publisher: Cambridge University Press
ISBN: 1107192455
Category : Science
Languages : en
Pages : 481

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Book Description
Summarizes state of the art observations and theories pertaining to astrophysical masers and their environments, for graduate students and researchers.

Maser Sources in Astrophysics

Maser Sources in Astrophysics PDF Author: Malcolm Gray
Publisher: Cambridge University Press
ISBN: 0521879809
Category : Science
Languages : en
Pages : 431

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Book Description
Written for postgraduates and researchers, this is an up-to-date survey of astrophysical maser sources and their use as astronomical tools.

Galactic and Extragalactic Radio Astronomy

Galactic and Extragalactic Radio Astronomy PDF Author: E. Bouton
Publisher: Springer Science & Business Media
ISBN: 1461239362
Category : Science
Languages : en
Pages : 715

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Book Description
Galactic and Extragalactic Radio Astronomy is a fundamental text for graduate students and professional astronomers and covers all aspects of radio astronomy beyond the solar system. Each chapter is written by a renowned expert in the field and contains a review of a particular area of radio astronomy and presents the latest observations and interpretations as well as an extensive view of the literature (as of 1988). Topics covered include: galactic continuum emission, HII regions, the diffuse interstellar medium, interstellar molecules, astronomical masers, neutral hydrogen, the galactic center, radio stars, supernova remnants, pulsars, extragalactic hydrogen, radio galaxies and quasars, the microwave background, and cosmological radio sources.

Reprints - National Radio Astronomy Observatory, Green Bank, W. Va

Reprints - National Radio Astronomy Observatory, Green Bank, W. Va PDF Author: National Radio Astronomy Observatory (U.S.)
Publisher:
ISBN:
Category : Astronomy
Languages : en
Pages : 398

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Book Description


Astronomy-Inspired Atomic and Molecular Physics

Astronomy-Inspired Atomic and Molecular Physics PDF Author: A.R. Rau
Publisher: Springer Science & Business Media
ISBN: 1402004672
Category : Science
Languages : en
Pages : 252

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Book Description
Aimed at senior undergraduate and first-year graduate students in departments of physics and astronomy, this textbook gives a systematic treatment of atomic and molecular structure and spectra, together with the effect of weak and strong external electromagnetic fields. Topics chosen are those of interest in astronomy, and indeed many were inspired by specific astronomical contexts. Examples include the negative ion of hydrogen and the effects of strong magnetic fields such as those occurring on certain white dwarfs and neutron stars. Adiabatic and non-adiabatic handling of electron correlations and application to processes such as dielectronic recombination are included. Astronomical examples are provided throughout, as well as end-of-the-chapter problems and exercises. Over seventy illustrative diagrams complete this unique and comprehensive volume.

Essential Radio Astronomy

Essential Radio Astronomy PDF Author: James J. Condon
Publisher: Princeton University Press
ISBN: 069113779X
Category : Science
Languages : en
Pages : 376

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Book Description
The ideal text for a one-semester course in radio astronomy Essential Radio Astronomy is the only textbook on the subject specifically designed for a one-semester introductory course for advanced undergraduates or graduate students in astronomy and astrophysics. It starts from first principles in order to fill gaps in students' backgrounds, make teaching easier for professors who are not expert radio astronomers, and provide a useful reference to the essential equations used by practitioners. This unique textbook reflects the fact that students of multiwavelength astronomy typically can afford to spend only one semester studying the observational techniques particular to each wavelength band. Essential Radio Astronomy presents only the most crucial concepts—succinctly and accessibly. It covers the general principles behind radio telescopes, receivers, and digital backends without getting bogged down in engineering details. Emphasizing the physical processes in radio sources, the book's approach is shaped by the view that radio astrophysics owes more to thermodynamics than electromagnetism. Proven in the classroom and generously illustrated throughout, Essential Radio Astronomy is an invaluable resource for students and researchers alike. The only textbook specifically designed for a one-semester course in radio astronomy Starts from first principles Makes teaching easier for astronomy professors who are not expert radio astronomers Emphasizes the physical processes in radio sources Covers the principles behind radio telescopes and receivers Provides the essential equations and fundamental constants used by practitioners Supplementary website includes lecture notes, problem sets, exams, and links to interactive demonstrations An online illustration package is available to professors

Millimeter-Wave Astronomy: Molecular Chemistry & Physics in Space

Millimeter-Wave Astronomy: Molecular Chemistry & Physics in Space PDF Author: W.F. Wall
Publisher: Springer Science & Business Media
ISBN: 9401147140
Category : Science
Languages : en
Pages : 474

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Book Description
Proceedings of the 1996 INAOE Summer School of Millimeter-Wave Astronomy held at INAOE, Tonantzintla, Puebla, MĂ©xico, 15-31 July 1996

An Introduction to Radio Astronomy

An Introduction to Radio Astronomy PDF Author: Bernard F. Burke
Publisher: Cambridge University Press
ISBN: 1316175944
Category : Science
Languages : en
Pages : 460

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Book Description
Written by two prominent figures in radio astronomy, this well-established, graduate-level textbook is a thorough introduction to radio telescopes and techniques. It is an invaluable overview for students and researchers turning to radio astronomy for the first time. The first half of the book describes how radio telescopes work - from basic antennas and single aperture dishes through to full aperture-synthesis arrays. It includes reference material on the fundamentals of astrophysics and observing techniques. The second half of the book reviews radio observations of our galaxy, stars, pulsars, radio galaxies, quasars, and the cosmic microwave background. This third edition describes the applications of fundamental techniques to newly developing radio telescopes, including ATA, LOFAR, MWA, SKA, and ALMA, which all require an understanding of aspects specific to radio astronomy. Two entirely new chapters now cover cosmology, from the fundamental concepts to the most recent results of WMAP.