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Author : Jacqueline Bergeron,Society of Photo-optical Instrumentation Engineers
Publisher : Unknown
Page : 358 pages
File Size : 47,7 Mb
Release : 2000
Category : Astronomical instruments
ISBN : UOM:39015050121550
Author : Puragra Guhathakurta
Publisher : SPIE-International Society for Optical Engineering
Page : 418 pages
File Size : 46,5 Mb
Release : 2003
Category : Science
ISBN : UOM:39015052664748
Author : John Hearnshaw
Publisher : Cambridge University Press
Page : 241 pages
File Size : 54,8 Mb
Release : 2009-02-12
Category : Science
ISBN : 9780521882576
Astronomical spectrographs analyse light emitted by the Sun, stars, galaxies and other objects in the Universe, and have been used in astronomy since the early nineteenth century. This book provides a comprehensive account of spectrographs from an historical perspective, from their theory and development over the last two hundred years, to the recent advances of the early twenty-first century. The author combines the theoretical principles behind astronomical spectrograph design with their historical development. Spectrographs of all types are considered, with prism, grating or grism dispersing elements. Included are Cassegrain, coudé, prime focus, échelle, fibre-fed, ultraviolet, nebular, objective prism, multi-object instruments and those which are ground-based, on rockets and balloons or in space. The book contains several tables listing the most significant instruments, around 900 references, and over 150 images, making it an indispensable reference for professional astronomers, graduate students, advanced amateur astronomers, and historians of science.
Author : João F. Alves,Mark J. McCaughrean
Publisher : Springer
Page : 540 pages
File Size : 41,7 Mb
Release : 2013-12-01
Category : Science
ISBN : 9783662402771
Many important observational clues about our understanding of how stars and planets form in the interior of molecular clouds have been amassed using recent technological developments. ESO's Very Large Telescope promises to be a major step forward in the investigation of stellar nurseries and infant stars. This volume collects papers from the leaders in this very timely field of astrophysical research. It presents theoretical and a host of observational results and many papers show the plans for future observations.
Author : Edo Berger
Publisher : Universal-Publishers
Page : 206 pages
File Size : 48,9 Mb
Release : 2004
Category : Science
ISBN : 9781581122336
The diversity of stellar death is revealed in the energy, velocity and geometry of the explosion debris ("ejecta''). Using multi-wavelength observations of gamma-ray burst (GRB) afterglows I show that GRBs, arising from the death of massive stars, are marked by relativistic, collimated ejecta ("jets'') with a wide range of opening angles. These results suggest that various cosmic explosions are powered by a common energy source, an "engine'' (possibly an accreting stellar-mass black hole), with their diverse appearances determined solely by the variable high velocity output. On the other hand, using radio observations I show that local type Ibc core-collapse supernovae generally lack relativistic ejecta and are therefore not powered by engines. Instead, the highest velocity debris in these sources, typically with a velocity lower than 100,000 km/sec, are produced in the (effectively) spherical ejection of the stellar envelope. The relative rates of engine- and collapse-powered explosions suggest that the former account for only a small fraction of the stellar death rate. Using the first radio and submillimeter observations of GRB hosts, I show that some are extreme starburst galaxies with the bursts directly associated with the regions of most intense star formation. I suggest, by comparison to other well-studied samples, that GRBs preferentially occur in sub-luminous, low mass galaxies, undergoing the early stages of a starburst process. If confirmed with future observations, this trend will place GRBs in the forefront of star formation and galaxy evolution studies.
Author : Zbigniew Szadkowski
Publisher : BoD – Books on Demand
Page : 174 pages
File Size : 46,5 Mb
Release : 2018-08-22
Category : Science
ISBN : 9781789235920
Measurements in present experiments have dramatically advanced our understanding of ultrahigh-energy cosmic rays. The suppression of the flux at the highest energies is now confirmed without any doubt, and strong limits have been placed on the photon and neutrino components. There are indications for a small, large-scale anisotropy both below and above the energy of the angle and for a correlation on smaller angular scales at E > 5.5*1019 eV. Around 3*1018 eV, there is a distinct change of slope with energy, and the shower-to-shower variance decreases. Interpreted with the leading LHC-tuned shower models, this implies a gradual shift to a heavier composition, and a number of fundamentally different astrophysical model scenarios have been developed to describe this evolution.
Author : Anonim
Publisher : Unknown
Page : 64 pages
File Size : 40,8 Mb
Release : 2002
Category : Engineering
ISBN : UOM:39015057255997
Author : Anonim
Publisher : Unknown
Page : 756 pages
File Size : 45,8 Mb
Release : 2000
Category : Astronomical instruments
ISBN : UOM:39015042962582
Author : Jacobus M. Oschmann
Publisher : Unknown
Page : 658 pages
File Size : 55,7 Mb
Release : 2004
Category : Astronomical observatories
ISBN : UOM:39015061380435
Author : Priyamvada Natarajan
Publisher : World Scientific
Page : 276 pages
File Size : 43,9 Mb
Release : 2002-03-28
Category : Science
ISBN : 9789814489393
This book constitutes the proceedings of a very topical workshop aimed at understanding the shapes of the baryonic and dark matter components of galaxies. Several groups presented their recent results from observations and numerical N-body simulations. Contents:Intrinsic Shapes of GalaxiesShapes from Lensing StudiesDark Matter Halos from N-Body SimulationsShapes Mapped Using Stellar TracersShapes from HI Studies and Polar RingsShapes from Studies of SatellitesConstraints from X-Ray StudiesShapes from Absorption Studies Readership: Graduate students, researchers and academics in astrophysics, astronomy and cosmology. Keywords:Galaxies;Dark Halos
Author : David R. Silva,Rodger Doxsey
Publisher : SPIE-International Society for Optical Engineering
Page : 804 pages
File Size : 46,5 Mb
Release : 2006
Category : Nature
ISBN : UOM:39015064780268
Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Author : Joss Bland-Hawthorn,Kenneth Freeman,Francesca Matteucci
Publisher : Springer Science & Business Media
Page : 240 pages
File Size : 40,5 Mb
Release : 2014-02-11
Category : Science
ISBN : 9783642417207
This volume contains the updated and expanded lecture notes of the 37th Saas-Fee Advanced Course organised by the Swiss Society for Astrophysics and Astronomy. It offers the most comprehensive and up to date review of one of the hottest research topics in astrophysics - how our Milky Way galaxy formed. Joss Bland-Hawthorn & Ken Freeman lectured on Near Field Cosmology - The Origin of the Galaxy and the Local Group. Francesca Matteucci’s chapter is on Chemical evolution of the Milky Way and its Satellites. As designed by the SSAA, books in this series – and this one too – are targeted at graduate and PhD students and young researchers in astronomy, astrophysics and cosmology. Lecturers and researchers entering the field will also benefit from the book.
Author : British Library. Document Supply Centre
Publisher : Unknown
Page : 870 pages
File Size : 54,6 Mb
Release : 2003
Category : Conference proceedings
ISBN : STANFORD:36105115205242
Author : Michael J. I. Brown,Arjun Dey
Publisher : Unknown
Page : 192 pages
File Size : 52,9 Mb
Release : 2001
Category : Science
ISBN : UOM:39015056652301
Author : Anonim
Publisher : Unknown
Page : 752 pages
File Size : 55,6 Mb
Release : 2006
Category : Astronomical observatories
ISBN : UOM:39015064780250