High Angular Resolution In Astrophysics

Author : A. Lagrange,Denis Mourard,Pierre Léna
Publisher : Springer Science & Business Media
Page : 404 pages
File Size : 49,6 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400900417

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High Angular Resolution in Astrophysics by A. Lagrange,Denis Mourard,Pierre Léna Pdf

Over the last decade many efforts have been made to develop high angular resolution techniques in astrophysics. Combined with imaging facilities, they have rapidly proved their efficiency and have already led to major astrophysical results. During the decade to come, astronomers will be offered new, even more sophisticated high angular resolution tools, especially in the IR and optical domains, coupled with much bigger telescopes, either on the ground or in space. In such a context of rapidly evolving techniques and a growing need for higher angular resolution to test theories or discover new objects, the present book reviews both instrumental and scientific aspects. The main questions addressed are: what kind of science will benefit from high angular resolution techniques? How can they best be used? Audience: The book is accessible to students and research workers in both instrumental and astrophysical aspects.

Author : Henri M. J. Boffin,Gaitee Hussain,Jean-Philippe Berger,Linda Schmidtobreick
Publisher : Springer
Page : 274 pages
File Size : 53,8 Mb
Release : 2016-08-24
Category : Science
ISBN : 9783319397399

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Astronomy at High Angular Resolution by Henri M. J. Boffin,Gaitee Hussain,Jean-Philippe Berger,Linda Schmidtobreick Pdf

This book offers an essential compendium of astronomical high-resolution techniques. Recent years have seen considerable developments in such techniques, which are critical to advances in many areas of astronomy. As reflected in the book, these techniques can be divided into direct methods, interferometry, and reconstruction methods, and can be applied to a huge variety of astrophysical systems, ranging from planets, single stars and binaries to active galactic nuclei, providing angular resolution in the micro- to tens of milliarcsecond scales. Written by experts in their fields, the chapters cover adaptive optics, aperture masking imaging, spectra disentangling, interferometry, lucky imaging, Roche tomography, imaging with interferometry, interferometry of AGN, AGN reverberation mapping, Doppler- and magnetic imaging of stellar surfaces, Doppler tomography, eclipse mapping, Stokes imaging, and stellar tomography. This book is intended to enable a next generation of astronomers to apply high-resolution techniques. It informs readers on how to achieve the best angular resolution in the visible and near-infrared regimes from diffraction-limited to micro-arcsecond scales.

Author : J.G. Robertson,W.J. Tango
Publisher : Springer Science & Business Media
Page : 505 pages
File Size : 51,9 Mb
Release : 2013-12-01
Category : Science
ISBN : 9789401108805

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Very High Angular Resolution Imaging by J.G. Robertson,W.J. Tango Pdf

The 1990s are proving to be a very exciting p&iod for high angular resolution astronomy. At radio wavelengths a combination of new array instruments and pow erful imaging algorithms have generated images of unprecedented resolution and quality. In the optical and infrared, the great technical difficulties associated with constructing separated-aperture interferometers have been largely overcome, and many new instruments are now operating or are being developed. As these pro grams start to produce observational results they will be able to draw extensively on the experience gained by the radio-interferometry community. Thus it seemed that the time was ripe for a meeting which would bring together workers from all wavelength ranges to discuss the details of the science and art of "Very High Angular Resolution Imaging" . While the main emphasis of Symposium No. 158 was on high resolution tech niques from the radio, mm-wave, infrared and optical bands, it also provided an opportunity for presentation of astronomical results from these techniques. As well as giving our colleagues from the Northern Hemisphere a break from midwinter, the location of the Symposium in Australia recognised the continuing development of astronomical interferometry in this country, especially the recent completion of the Australia Telescope radio array, and the progress toward com missioning of the Sydney University Stellar Interferometer. A number of the par ticipants visited these instruments during the post-symposium tour.

Author : Florentin Millour,Andréa Chiavassa,Lionel Bigot,O. Chesneau,A. Meilland
Publisher : Unknown
Page : 375 pages
File Size : 42,7 Mb
Release : 2015
Category : Electronic
ISBN : 2759818330

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What the Highest Angular Resolution Can Bring to Stellar Astrophysics? by Florentin Millour,Andréa Chiavassa,Lionel Bigot,O. Chesneau,A. Meilland Pdf

Author : Francesca Bacciotti,Emma Whelan,Leonardo Testi
Publisher : Springer
Page : 292 pages
File Size : 46,9 Mb
Release : 2007-10-31
Category : Science
ISBN : 9783540680321

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Jets from Young Stars II by Francesca Bacciotti,Emma Whelan,Leonardo Testi Pdf

This volume offers a background in modern high spatial resolution techniques, illustrating how such methods have impacted on our understanding of young stars. It provides hands-on insight into observing from space as well as the ground, the use of interferometers at millimeter and infrared wavelengths, image analysis and spectral diagnostic techniques, and High Angular Resolution studies of the inner regions of circumstellar disks that play a fundamental role in jet launching.

Author : Peter von Ballmoos
Publisher : Springer Science & Business Media
Page : 488 pages
File Size : 41,9 Mb
Release : 2006-12-20
Category : Science
ISBN : 9781402053030

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Focusing Telescopes in Nuclear Astrophysics by Peter von Ballmoos Pdf

HESS (High Energy Stereoscopic System), a ground-based Cerenkov array telescopes has been operated since a few years and in 2004 has performed the ?rst Galactic plane scan with a sensitivity of a few percent of the Crab at energies above 100 GeV, resulting in the discoveryofeightsources,mostofwhichwithoutanycounterpartatdifferentenergies[1,2]. ParticularattentionwasdevotedtoHESSJ1813-178,notidenti?edwithanyknownX/gamma ray emitter and hypothesised to be a dark particle accelerator. Independently, and at the same time, INTEGRAL discovered a new soft gamma-ray source, namely IGR J18135-1751, identi?edasthecounterpartofHESSJ1813-178.Thishighenergyemitter,whosenaturewas still mysterious at the time of the discovery was then associated with the supernova remnant (SNR) G12.82 0.02 [6, 10, 18]. Even if a chance coincidence cannot be completely ruled out in view of the 2 arcmin INTEGRAL error box and the possible angular extension in the high energy,theoverallcharacteristicsofthisstarformingregion[7]comprisingSNRG12.82 0.02 areconsistentwithsupernova/plerionorigin.Morerecently,theMAGIC(MajorAtmospheric Gamma Imaging Cerenkov telescope) collaboration has reported a positive observations of HESSJ1813–178,resultinginagamma-ray?uxconsistentwiththepreviousHESSdetection and showing a hard power law with? = 2.1 in the range from 0.4–10TeV [3].

Author : Nicolas Nardetto,Yveline Lebreton,Eric Lagadec
Publisher : EDP Sciences
Page : 158 pages
File Size : 51,9 Mb
Release : 2019-09-26
Category : Science
ISBN : 9782759823734

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Imaging at High Angular Resolution of Stellar Surfaces and Close Environment by Nicolas Nardetto,Yveline Lebreton,Eric Lagadec Pdf

Imaging at high angular resolution (HRA) is a ?ourishing discipline. High performance instruments like the spectro-polarimeter SPHERE at VLT/ESO has recently been implemented. A harvest of splendid results is continuously coming from interferometry with PIONIER, MATISSE, and now GRAVITY (all at VLTI/ESO), VEGA and JouFlu (CHARA), and at longer wavelengths with ALMA at VLTI/ESO and NOEMA/IRAM. The future is already underway with the very close launch of JWST/NASA, and the development of ELT at ESO. HRA provides a unique way to study regions of stellar formation, proto-planetary discs as well as the surfaces of stars and their environments. This volume offers lectures given by world experts in the ?eld during the EvrySchatzman School on Stellar Physics (EES 2017) held in Roscoff, France. The addressed topics include a course of introduction to optical/IR interferometry covering the history and basic principles, a course on diffraction-dominated observational astronomy, and a course presenting the principles and instrumentation of optical long baseline interferometry. This book will be a valuable reference for researchers and students in the coming years.

Author : N. Jackson,R. J. Davis
Publisher : Cambridge University Press
Page : 332 pages
File Size : 54,8 Mb
Release : 1997-01-28
Category : Science
ISBN : 0521573505

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High-Sensitivity Radio Astronomy by N. Jackson,R. J. Davis Pdf

Enhanced sensitivity radio telescopes are producing dramatic results. An international conference was held in Jodrell Bank to take stock of these advances. This timely volume presents the review articles presented by a host of world experts who gathered at this meeting. We are shown how high sensitivity is advancing our understanding in radio spectral line analysis, radio continuum observations of galaxies, cosmology, pulsars, and radio emission from stars; what new and enhanced instruments are now available and those planned for the future. This volume provides graduate students and researchers with an up-to-date and wide-ranging review of the new and future research possible with high-sensitivity radio telescopes.

Author : Francesca Bacciotti,Emma Whelan,Leonardo Testi
Publisher : Springer
Page : 292 pages
File Size : 55,5 Mb
Release : 2009-09-02
Category : Science
ISBN : 3540833722

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Jets from Young Stars II by Francesca Bacciotti,Emma Whelan,Leonardo Testi Pdf

This volume offers a background in modern high spatial resolution techniques, illustrating how such methods have impacted on our understanding of young stars. It provides hands-on insight into observing from space as well as the ground, the use of interferometers at millimeter and infrared wavelengths, image analysis and spectral diagnostic techniques, and High Angular Resolution studies of the inner regions of circumstellar disks that play a fundamental role in jet launching.

Author : National Research Council,Division on Engineering and Physical Sciences,Space Studies Board,Board on Physics and Astronomy,Astronomy and Astrophysics Survey Committee
Publisher : National Academies Press
Page : 404 pages
File Size : 47,8 Mb
Release : 2002-02-07
Category : Science
ISBN : 0309070376

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Astronomy and Astrophysics in the New Millennium by National Research Council,Division on Engineering and Physical Sciences,Space Studies Board,Board on Physics and Astronomy,Astronomy and Astrophysics Survey Committee Pdf

In preparing the report, Astronomy and Astrophysics in the New Millenium , the AASC made use of a series of panel reports that address various aspects of ground- and space-based astronomy and astrophysics. These reports provide in-depth technical detail. Astronomy and Astrophysics in the New Millenium: An Overview summarizes the science goals and recommended initiatives in a short, richly illustrated, non-technical booklet.

Author : Steven M. Kahn,Peter Ballmoos,Rashid A. Sunyaev
Publisher : Springer
Page : 295 pages
File Size : 42,6 Mb
Release : 2006-03-30
Category : Science
ISBN : 9783540270133

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High-Energy Spectroscopic Astrophysics by Steven M. Kahn,Peter Ballmoos,Rashid A. Sunyaev Pdf

After three decades of intense research in X-ray and gamma-ray astronomy, the time was ripe to summarize basic knowledge on X-ray and gamma-ray spectroscopy for interested students and researchers ready to become involved in new high-energy missions. This volume exposes both the scientific basics and modern methods of high-energy spectroscopic astrophysics. The emphasis is on physical principles and observing methods rather than a discussion of particular classes of high-energy objects, but many examples and new results are included in the three chapters as well.

Author : H. Ögelman,J. R. Wayland
Publisher : Unknown
Page : 278 pages
File Size : 55,6 Mb
Release : 1970
Category : Astrophysics
ISBN : STANFORD:36105113767334

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Introduction to Experimental Techniques of High-energy Astrophysics by H. Ögelman,J. R. Wayland Pdf

Author : Paulo J.V. Garcia,Andreas Glindemann,Thomas Henning,Fabien Malbet
Publisher : Springer Science & Business Media
Page : 313 pages
File Size : 54,5 Mb
Release : 2013-11-11
Category : Science
ISBN : 9789401701570

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The Very Large Telescope Interferometer Challenges for the Future by Paulo J.V. Garcia,Andreas Glindemann,Thomas Henning,Fabien Malbet Pdf

A JENAM 2002 Workshop, Porto, Portugal, 3-5 September 2002

Author : International Astronomical Union. Colloquium
Publisher : Unknown
Page : 516 pages
File Size : 46,7 Mb
Release : 1979
Category : Astronomical photometry
ISBN : UIUC:30112077809405

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High Angular Resolution Stellar Interferometry by International Astronomical Union. Colloquium Pdf

Author : Pierre Lena
Publisher : Springer Science & Business Media
Page : 338 pages
File Size : 52,8 Mb
Release : 2013-03-09
Category : Science
ISBN : 9783662025543

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Observational Astrophysics by Pierre Lena Pdf

For the last twenty years astronomy has been developing dramatically. Until the nineteen-fifties, telescopes, spectrometers, and photographic plates consti tuted a relatively simple set of tools which had been refined to a high degree of perfection by the joint efforts of physicists and astronomers. Indeed these tools helped at the birth of modern astrophysics: the discovery of the expan sion of the Universe. Then came radioastronomy and the advent of electronics; the last thirty years have seen the application to astrophysics of a wealth of new experimental techniques, based on the most advanced fields of physics, and a constant interchange of ideas between physicists and astronomers. Last, but not least, modern computers have sharply reduced the burden of dealing with the information painfully extracted from the skies, whether from ever scarce photons, or from the gigantic data flows provided by satellites and large telescopes. The aim of this book is not to give an extensive overview of all the tech niques currently in use in astronomy, nor to provide detailed instructions for preparing or carrying out an astronomical project. Its purpose is methodologi cal: photons are still the main carriers of information between celestial sources and the observer. How we are to collect, sample, measure, and store this infor mation is the unifying theme of the book. Rather than the diversity of tech niques appropriate for each wavelength range, we emphasize the physical and mathematical bases which are common to all wavelength regimes.