Imaging at Radio Through Submillimeter Wavelengths

Imaging at Radio Through Submillimeter Wavelengths PDF Author: Jeffrey Gary Mangum
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 432

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Imaging at Radio Through Submillimeter Wavelengths

Imaging at Radio Through Submillimeter Wavelengths PDF Author: Jeffrey Gary Mangum
Publisher:
ISBN:
Category : Astronomical spectroscopy
Languages : en
Pages : 432

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Book Description


Imaging at Radio Through Submillimeter Wavelengths

Imaging at Radio Through Submillimeter Wavelengths PDF Author: Jeffrey Gary Mangum
Publisher:
ISBN:
Category :
Languages : en
Pages : 382

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Interferometry and Synthesis in Radio Astronomy

Interferometry and Synthesis in Radio Astronomy PDF Author: A. Richard Thompson
Publisher: Springer
ISBN: 331944431X
Category : Science
Languages : en
Pages : 910

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Book Description
This book is open access under a CC BY-NC 4.0 license. The third edition of this indispensable book in radio interferometry provides extensive updates to the second edition, including results and technical advances from the past decade; discussion of arrays that now span the full range of the radio part of the electromagnetic spectrum observable from the ground, 10 MHz to 1 THz; an analysis of factors that affect array speed; and an expanded discussion of digital signal-processing techniques and of scintillation phenomena and the effects of atmospheric water vapor on image distortion, among many other topics. With its comprehensiveness and detailed exposition of all aspects of the theory and practice of radio interferometry and synthesis imaging, this book has established itself as a standard reference in the field. It begins with an overview of the basic principles of radio astronomy, a short history of the development of radio interferometry, and an elementary discussion of the operation of an interferometer. From this foundation, it delves into the underlying relationships of interferometry, sets forth the coordinate systems and parameters to describe synthesis imaging, and examines configurations of antennas for multielement synthesis arrays. Various aspects of the design and response of receiving systems are discussed, as well as the special requirements of very-long-baseline interferometry (VLBI), image reconstruction, and recent developments in image enhancement techniques and astrometric observations. Also discussed are propagation effects in the media between the source and the observer, and radio interference, factors that limit performance. Related techniques are introduced, including intensity interferometry, optical interferometry, lunar occultations, tracking of satellites in Earth orbit, interferometry for remote Earth sensing, and holographic measurements of antenna surfaces. This book will benefit anyone who is interested in radio interferometry techniques for astronomy, astrometry, geodesy, or electrical engineering.

Millimeter and Submillimeter Detectors for Astronomy

Millimeter and Submillimeter Detectors for Astronomy PDF Author:
Publisher:
ISBN:
Category : Coherence (Optics)
Languages : en
Pages : 648

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Information Handling in Astronomy - Historical Vistas

Information Handling in Astronomy - Historical Vistas PDF Author: Andre Heck
Publisher: Springer Science & Business Media
ISBN: 0306480808
Category : Mathematics
Languages : en
Pages : 300

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Book Description
This book offers a unique review of how astronomical information handling (in the broad sense) evolved in the course of the 20th century, and especially during its second half. It will be very useful for researchers, teachers, editors, publishers, librarians, computer scientists, sociologists of science, research planners and strategists, project managers, public-relations officers, plus those in charge of astronomy-related organizations, as well as by students aiming at a career in astronomy or related space science.

Interferometry and Synthesis in Radio Astronomy

Interferometry and Synthesis in Radio Astronomy PDF Author: A. Richard Thompson
Publisher: John Wiley & Sons
ISBN: 352761785X
Category : Science
Languages : en
Pages : 715

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Book Description
Comprehensive, authoritative coverage of interferometric techniques for radio astronomy In this Second Edition of Interferometry and Synthesis in Radio Astronomy, three leading figures in the development of large imaging arrays, including very-long-baseline interferometry (VLBI), describe and explain the technology that provides images of the universe with an angular resolution as fine as 1/20,000 of an arcsecond. This comprehensive volume begins with a historical review followed by detailed coverage of the theory of interferometry and synthesis imaging, analysis of interferometer response, geometrical relationships, polarimetry, antennas, and arrays. Discussion of the receiving system continues with analysis of the response to signals and noise, analog design requirements, and digital signal processing. The authors detail special requirements of VLBI including atomic frequency standards, broadband recording systems, and antennas in orbit. Further major topics include: * Calibration of data and synthesis of images * Image enhancement using nonlinear algorithms * Techniques for astrometry and geodesy * Propagation in the neutral atmosphere and ionized media * Radio interference * Related techniques: intensity interferometry, moon occultations, antenna holography, and optical interferometry Interferometry and Synthesis in Radio Astronomy, Second Edition is comprehensive in that it provides an excellent overview of most radio astronomical instrumentation and techniques.

Fundamentals of Radio Astronomy

Fundamentals of Radio Astronomy PDF Author: Ronald L. Snell
Publisher: CRC Press
ISBN: 0429649770
Category : Science
Languages : en
Pages : 346

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Book Description
As demonstrated by five Nobel Prizes in physics, radio astronomy has contributed greatly to our understanding of the Universe. Courses covering this subject are, therefore, very important in the education of the next generation of scientists who will continue to explore the Cosmos. This textbook, the second of two volumes, presents an extensive introduction to the astrophysical processes that are studied in radio astronomy. Suitable for undergraduate courses on radio astronomy, it discusses the physical phenomena that give rise to radio emissions, presenting examples of astronomical objects, and illustrating how the relevant physical parameters of astronomical sources can be obtained from radio observations. Unlike other radio astronomy textbooks, this book provides students with an understanding of the background and the underlying principles, with derivations available for most of the equations used in the textbook. Features: Presents a clear and concise discussion of the important astronomical concepts and physical processes that give rise to both radio continuum and radio spectral line emission Discusses radio emissions from a variety of astronomical sources and shows how the observed emissions can be used to derive the physical properties of these sources Includes numerous examples using actual data from the literature

Radio Telescopes

Radio Telescopes PDF Author: Harvey R. Butcher
Publisher: SPIE-International Society for Optical Engineering
ISBN:
Category : Nature
Languages : en
Pages : 684

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CONDOR

CONDOR PDF Author: Gundolf Wieching
Publisher: Cuvillier Verlag
ISBN: 3867271631
Category :
Languages : en
Pages : 178

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Submillimetre Astronomy

Submillimetre Astronomy PDF Author: Graeme D. Watt
Publisher: Springer Science & Business Media
ISBN: 9401568502
Category : Science
Languages : en
Pages : 330

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Book Description
G. M. Bernstein, M. L. Fischer, and P. L. Richards Department of Physics, University of California Berkeley, California 94720, U. S. A. J. B. Peterson Department of Physics, Princeton University Princeton, New Jersey 08540, U. S. A. T. Timusk Department of Physics, McMaster University Hamilton, Ontario L8S 4M1 , Canada ABSTRACT. Recent measurements of the diffuse background at millimeter wavelengths indicate no departure from a Planck spectrum near the peak of the blackbody curve. Anisotropy measurements indicate no structure, at the 2% level, in the recently detected submillimeter excess. We report here the results of an April 1987 balloon flight of an instrument designed to measure the spectrum of the cosmic background radiation from 1 mm to 3 mm. A description of the instrument can be found in Peterson, Richards, and Timusk (1985). Modifications were made to the apparatus and experimental procedure in order to identify and reduce systematic errors. Results from the latest flight indicate that two effects hamper the interpretation of the data. These systematic effects will be described in detail in a forthcoming publications; they are probably responsible for the non-Planckian spectrum measured by Woody and Richards (1981). Attempts to remove the systematic effects from our data yield the upper limits to the CBR brightness temperature in 4 bands from 1 mm to 3 mm. There is no evidence for an excess of radiation near the 2. 8 K blackbody peak.