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Radio Recombination Lines 25 Years Of Investigation
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Book Synopsis Radio Recombination Lines: 25 Years of Investigation by : M.A. Gordon
Download or read book Radio Recombination Lines: 25 Years of Investigation written by M.A. Gordon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: Text no 1 Radio Recombination Lines (RRLs), discovered in the USSR in 1964, have become a powerful research tool for astronomers. Available throughout the radio spectrum, these lines carry information regarding the density, temperature, turbulence and velocity of thermal plasmas. Their very existance shows the presence of thermal gas. They also can carry information regarding magnetic fields if Zeeman splitting were to be detected. Containing the proceedings of an IAU Colloquium celebrating the 25th anniversary of their detection, this volume tells us what has happened since. It contains the story of the detection of RRLs and reviews of many areas of physics of the interstellargas from which stars form, HII regions excited by newly formed stars, planetary nebulae involving dying stars, and the structure of our Milky Way and other galaxies reflecting the large-scale morphology of the star formation process. In addition there is an article describing modern laboratory studies of Rydberg atoms to probe the basic physics of atomic structure, and articles describing the theory of collisions and radiation upon Rydberg atoms leading to observate effects to be used as diagnostic tools in astromony. This book focuses on the 25 years of astronomical research with radio recombination lines (RRLs) since their discovery in 1965. It covers a wide range of topics: papers dealing with research into Rydberg atoms both in the laboratory and in the interstellar medium of our galaxy and others; papers on the interaction of radiation and atomic systems, as well as with the effects of inadiabatic collisions between these atoms and both ions and electrons. It deals with astronomical observations of atoms with `diameters' ranging from 0.08 to 50 mum a size factor of 625. It deals with RRLs in absorption, in emission and as true masers. And it deals with plasmas with temperatures ranging from 10 to greater than 104 kelvins, and with an even greater range of volume densities. Much new work is reported, including low frequency RRLs discovered in 1980 and the maser RRLs from the star MWC349, discovered in 1989. The advent of aperture synthesis telescopes and large single-element telescopes have made possible RRL studies with high angular resolution. The sum total of the work reported here will make the volume a platform from which to search new horizons in RRL research.
Book Synopsis Radio Recombination Lines by : M.A. Gordon
Download or read book Radio Recombination Lines written by M.A. Gordon and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recombination lines at radio wavelengths have been - and still are - a pow erful tool for modern astronomy. For more than thirty years they have allowed astronomers to probe the gases from which stars form. They have even been detected in the Sun. In addition, observations of these spectral lines facilitate basic research into the atom, in forms and environments that can only exist in the huge dimensions and extreme conditions of cosmic laboratories. We intend this book to serve as a tourist's guide to the world of Radio Recombination Lines. It contains three divisions: a history of their discovery, the physics of how they form and how their voyage to us influences their spectral profiles, and a description of their many astronomical contributions to date. The appendix includes supplementary calculations that may be useful to some astronomers. This material also includes tables of line frequencies from 12 MHz to 30THz (AlOJLm) as well as FORTRAN computer code to calculate the fine structure components of the lines, to evaluate radial matrix integrals, and to calculate the departure coefficients of hydrogen in a cosmic environment. It also describes how to convert observational to astrophysical units. The text includes extensive references to the literature to assist readers who want more details.
Download or read book Physics Briefs written by and published by . This book was released on 1994 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Amazing Light written by Raymond Y. Chiao and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 675 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Festschrift is a collection of essays contributed by students, colleagues, and ad mirers to honor an eminent scholar on a special anniversary: Charles Hard Townes on the occasion of his 80th birthday, July 28, 1995. In 1964, Townes shared the Nobel Prize in physics with Alexander Mikhailovich Prokhorov and Nikolai Gen nadyevich Basov "for fundamental work in the field of quantum electronics, which has led to the construction of oscillators and amplifiers based on the maser-laser principle. " His contributions have covered a much wider area, however. His fruitful interests spanning several decades have included many scientific subjects, includ ing, microwave spectroscopy and astrophysics (other articles in this volume will expand further on this point). He has also contributed to public service, having served as the chairman of the Science and Technology Advisory Committee for NASA's Apollo program, and as a member and vice chairman of the President's Science Advisory Committee. As the enormous breadth of contributions from his students shows, he has educated scholars who are now in a wide range of fields. The contributions from his many admirers, among whom are nine fellow Nobel laureates, attest to his impact on many disciplines ranging from electrical engi neering to medicine. His influence extends even to theology, as is indicated by one essay. The broadly international character of this Festschrift reflects his deep belief in the international, universal nature of science.
Book Synopsis The Physics of Star Formation and Early Stellar Evolution by : Charles J. Lada
Download or read book The Physics of Star Formation and Early Stellar Evolution written by Charles J. Lada and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 779 pages. Available in PDF, EPUB and Kindle. Book excerpt: The origin of stars is one of the principle mysteries of nature. During the last two decades advances in technology have enabled more progress to be made in the quest to understand stellar origins than at any other time in history. The study of star formation has developed into one of the most important branches of mod ern astrophysical research. A large body of observational data and a considerable literat ure now exist concerning this topic and a 1arge community of international astronomers and physicists devote their efforts attempting to decipher the secrets of stellar birth. Yet, the young astronomerjphysicist or more advanced researcher desiring to obtain a basic background in this area of research must sift through a very diverse and sometimes bewildering literature. A literature which includes research in many discip1ines and sub discip1ines of classical astrophysics from stel lar structure to the interstellar medium and encompasses the entire range of the electromagnetic spectrum from radio to gamma rays. Often, the reward of a suc cessfu1 foray through the current literature is the realization that the results can be obsolete and outdated as soon as the ink is dry in the journal or the conference proceeding in which they are published.
Book Synopsis Reports on Astronomy by : Derek McNally
Download or read book Reports on Astronomy written by Derek McNally and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt: IAU Transactions are published as a volume corresponding to each General Assembly. Volume A is produced prior to the Assembly and contains Reports on Astronomy, prepared by each Commission President. The intention is to summarize the astronomical results that have affected the work of the Commission since the production of the previous Reports up to a time which is about one year prior to the General Assembly. Volume B is produced after the Assembly and contains accounts of Commission Meetings which were held, together with other material. The reports included in the present volume range from outline summaries to lengthy compilations and references.
Book Synopsis Evolution of Interstellar Matter and Dynamics of Galaxies by : J. Palous
Download or read book Evolution of Interstellar Matter and Dynamics of Galaxies written by J. Palous and published by Cambridge University Press. This book was released on 1992-07-02 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the international workshop on the 'Evolution of Interstellar Matter and Dynamics of Galaxies'.
Book Synopsis The Cold Universe by : Thierry Montmerle
Download or read book The Cold Universe written by Thierry Montmerle and published by Atlantica Séguier Frontières. This book was released on 1994 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Radio Schmidt Telescope by : Dominion Radio Astrophysical Observatory
Download or read book The Radio Schmidt Telescope written by Dominion Radio Astrophysical Observatory and published by . This book was released on 1991 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 25 Years of Radio Astronomy at Tata Institute of Fundamental Research by :
Download or read book 25 Years of Radio Astronomy at Tata Institute of Fundamental Research written by and published by . This book was released on 1989 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Universe at Low Radio Frequencies by : International Astronomical Union. Symposium
Download or read book The Universe at Low Radio Frequencies written by International Astronomical Union. Symposium and published by . This book was released on 2002 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Millimeter Aperture Synthesis Observations of High Mass Star Forming Regions by : David James Wilner
Download or read book Millimeter Aperture Synthesis Observations of High Mass Star Forming Regions written by David James Wilner and published by . This book was released on 1993 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Journal of Physics written by and published by . This book was released on 2002 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Information Bulletin by : International Astronomical Union
Download or read book Information Bulletin written by International Astronomical Union and published by . This book was released on 1989 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Whitaker's Book List written by and published by . This book was released on 1991 with total page 1488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Messenger written by and published by . This book was released on 1988 with total page 638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Radio Astronomy at Long Wavelengths by : Robert G. Stone
Download or read book Radio Astronomy at Long Wavelengths written by Robert G. Stone and published by American Geophysical Union. This book was released on 2000-01-10 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first reports back from what has until now been an unexplored region of the radiomagnetic spectrum, from 30 kHz and a wavelength of ten kilometers to about 30 MHz and a wavelength of ten meters, three orders of frequency magnitude just below the standard radion astronomy region. The 36 tutorials and reviews from an October conference in Paris, France consider the generation of radio waves, propagation and scattering, long wavelength radio emission from the solar system and from galactic and extragalactic sources, and radio telescopes for long wavelength observations and sounding. They include a few color plates, but are not indexed. Annotation copyrighted by Book News, Inc., Portland, OR.
