دانلود کتاب خارجی - دانلود رایگان کتاب لاتین PDF علمی

تعداد نتایج: 2011

N-body Problems and Gravitational Dynamics

Proceedings of a Meeting Held at Centre Paul Langevin-CNRS, ...

جزئیات و درخواست

By F. Combes, E. Athanassoula
1993
Pages: 288
Language: en
OTHER:UOM:39015033954333
Subject: Astrodynamics

Space Studies Board Annual Report 2010

جزئیات و درخواست

By National Research Council, Division on Engineering and Physical Sciences, Space Studies Board
Publisher: National Academies Press, 2011-01-01
Pages: 131
Language: en
ISBN_13:9780309217880
ISBN_10:0309217881
Subject: Science

Star Clusters (IAU S266)

Basic Galactic Building Blocks Throughout Time and Space

جزئیات و درخواست

By International Astronomical Union. Symposium
Publisher: Cambridge University Press, 2010-02-04
Pages: 606
Language: en
ISBN_10:0521764998
ISBN_13:9780521764995
Subject: Science

Frontiers Of Space And Ground-Based Astronomy

The Astrophysics of the 21st Century

جزئیات و درخواست

By Willem Wamsteker, Malcolm S. Longair, Y. Kondo
Publisher: Springer Science & Business Media, 1994-08-31
Pages: 794
Language: en
ISBN_10:0792325273
ISBN_13:9780792325277
Subject: Science

Structure and Properties of Nearby Galaxies

جزئیات و درخواست

By Elly M. Berkhuijsen, R. Wielebinski
1978
Language: en
OTHER:LCCN:78007292
Subject: Galaxies

Planetary Nebulae Beyond the Milky Way

Proceedings of the ESO Workshop held at Garching, Germany, 1...

جزئیات و درخواست

By L. Stanghellini, J.R. Walsh, N.G. Douglas
Publisher: Springer Science & Business Media, 2006-07-30
Pages: 373
Language: en
ISBN_13:9783540342700
ISBN_10:3540342702
Subject: Science

Die Nadel im Galaxienhaufen

Eine Reise durchs Universum

جزئیات و درخواست

By Michael Büker
Publisher: Ullstein Ebooks, 2020-07-13
Pages: 285
Language: de
ISBN_13:9783843712965
ISBN_10:3843712964
Subject: Science

Active Galactic Nuclei

جزئیات و درخواست

By Volker Beckmann, Chris Shrader
Publisher: John Wiley & Sons, 2013-08-29
Pages: 390
Language: en
ISBN_13:9783527666805
ISBN_10:352766680X
Subject: Science

Organic Matter in Space (IAU S251)

جزئیات و درخواست

By International Astronomical Union. Symposium
Publisher: Cambridge University Press, 2008
Pages: 536
Language: en
ISBN_10:0521889820
ISBN_13:9780521889827
Subject: Science

Taking Back Astronomy

The Heavens Declare Creation

جزئیات و درخواست

By Jason Lisle
Publisher: New Leaf Publishing Group, 2006-04
Pages: 129
Language: en
ISBN_13:9780890514719
ISBN_10:0890514712
Subject: Nature

The Universe at Large

Key Issues in Astronomy and Cosmology

جزئیات و درخواست

By Guido Münch, Antonio Mampaso, F. Sánchez, Francisco Sánchez
Publisher: Cambridge University Press, 1997-11-13
Pages: 460
Language: en
ISBN_10:0521589444
ISBN_13:9780521589444
Subject: Science

Science with the VLT in the ELT Era

جزئیات و درخواست

By Alan F.M. Moorwood
Publisher: Springer Science & Business Media, 2008-11-21
Pages: 474
Language: en
ISBN_13:9781402091902
ISBN_10:1402091907
Subject: Science

Proceedings of the International Europhysics Conference on High Energy Physics

Marseille, France, 22-28 July 1993

جزئیات و درخواست

By John Carr, M. Perrottet
Publisher: Atlantica Séguier Frontières, 1994
Pages: 1044
Language: en
ISBN_10:2863321463
ISBN_13:9782863321461
Subject: Nuclear physics

Nuclear Science Abstracts

Free Epub

جزئیات و درخواست

1976-06
Pages: 1216
Language: en
OTHER:PSU:000047758964
Subject: Nuclear energy

Galaxien

جزئیات و درخواست

By FERRIS
Publisher: Springer-Verlag, 2013-12-14
Pages: 193
Language: de
ISBN_13:9783034867740
ISBN_10:3034867743
Subject: Science

$The last 50 years have seen a tremendous progress in the research on quasars. From a time when quasars were unforeseen oddities, we have come to a view that considers quasars as active galactic nuclei, with nuclear activity a coming-of-age experienced by most or all galaxies in their evolution. We have passed from a few tens of known quasars of the early 1970s to the 500,000 listed in the catalogue of the Data Release 14 of the Sloan Digital Sky Survey. Not surprisingly, accretion processes on the central black holes in the nuclei of galaxies — the key concept in our understanding of quasars and active nuclei in general — have gained an outstanding status in present-day astrophysics. Accretion produces a rich spectrum of phenomena in all bands of the electromagnetic spectrum. The power output of highly-accreting quasars has impressive effects on their host galaxies. All the improvement in telescope light gathering and in computing power notwithstanding, we still miss a clear connection between observational properties and theory for quasars, as provided, for example, by the H-R diagram for stars. We do not yet have a complete self-consistent view of nuclear activity with predictive power, as we do for main-sequence stellar sources. At the same time quasars offer many “windows open onto the unknown". On small scales, quasar properties depend on phenomena very close to the black hole event horizon. On large scales, quasars may effect evolution of host galaxies and their circum-galactic environments. Quasars’ potential to map the matter density of the Universe and help reconstruct the Universe’s spacetime geometry is still largely unexploited. The times are ripe for a critical assessment of our present knowledge of quasars as accreting black holes and of their evolution across the cosmic time. The foremost aim of this research topic is to review and contextualize the main observational scenarios following an empirical approach, to present and discuss the accretion scenario, and then to analyze how a closer connection between theory and observation can be achieved, identifying those aspects of our understanding that are still on a shaky terrain and are therefore uncertain knowledge. This research topic covers topics ranging from the nearest environment of the black hole, to the environment of the host galaxies of active nuclei, and to the quasars as markers of the large scale structure and of the geometry of spacetime of the Universe. The spatial domains encompass the accretion disk, the emission and absorption regions, circum-nuclear starbursts, the host galaxy and its interaction with other galaxies. Systematic attention is devoted to some key problems that remain outstanding and are clearly not yet solved: the existence of two quasar classes, radio quiet and radio loud, and in general, the systematic contextualization of quasar properties the properties of the central black hole, the dynamics of the accretion flow in the inner parsecs and the origin of the accretion matter, the quasars’ small and large scale environment, the feedback processes produced by the black hole into the host galaxy, quasar evolutionary patterns from seed black holes to the present-day Universe, and the use of quasars as cosmological standard candles. The timing is appropriate as we are now witnessing a growing body of results from major surveys in the optical, UV X, near and far IR, and radio spectral domains. Radio instrumentation has been upgraded to linear detector — a change that resembles the introduction of CCDs for optical astronomy — making it possible to study radio-quiet quasars at radio frequencies. Herschel and ALMA are especially suited to study the circum-nuclear star formation processes. The new generation of 3D magnetohydrodynamical models offers the prospective of a full physical modeling of the whole quasar emitting regions. At the same time, on the forefront of optical astronomy, applications of adaptive optics to long-slit spectroscopy is yielding unprecedented results on high redshift quasars. Other measurement techniques like 2D and photometric reverberation mapping are also yielding an unprecedented amount of data thanks to dedicated experiments and instruments. Thanks to the instrumental advances, ever growing computing power as well as the coming of age of statistical and analysis techniques, the smallest spatial scales are being probed at unprecedented resolution for wide samples of quasars. On large scales, feedback processes are going out of the realm of single-object studies and are entering into the domain of issues involving efficiency and prevalence over a broad range of cosmic epochs. The Research Topic "Quasars at all Cosmic Epochs" collects a large fraction of the contributions presented at a meeting held in Padova, sponsored jointly by the National Institute for Astrophysics, the Padova Astronomical Observatory, the Department of Physics and Astronomy of the University of Padova, and the Instito de Astrofísica de Andalucía (IAA) of the Consejo Superiór de Investigación Cientifica (CSIC). The meeting has been part of the events meant to celebrate the 250th anniversary of the foundation of the Padova Observatory.$

جزئیات و درخواست

By Paola Marziani, Mauro D'Onofrio, Ascensión del Olmo, Deborah Dultzin
Publisher: Frontiers Media SA, 2018-10-05
Pages: 447
Language: en
ISBN_13:9782889456048
ISBN_10:2889456048

Revista Mexicana de Astronomía Y Astrofísica

Serie de conferencias

جزئیات و درخواست

1997
Pages: 316
Language: en
OTHER:CHI:46567411
Subject: Astronomy

God, Humanity and the Cosmos - 3rd edition

A Textbook in Science and Religion

جزئیات و درخواست

By Christopher Southgate
Publisher: Bloomsbury Publishing, 2011-10-13
Pages: 528
Language: en
ISBN_13:9780567012296
ISBN_10:0567012298
Subject: Religion

Reports on Astronomy 2006-2009 (IAU XXVIIA)

IAU Transactions XXVIIA

جزئیات و درخواست

By Karel A. van der Hucht
Publisher: Cambridge University Press, 2009-03-23
Pages: 488
Language: en
ISBN_10:0521856051
ISBN_13:9780521856058
Subject: Science

A First Course in General Relativity

جزئیات و درخواست

By Bernard F. Schutz
Publisher: Cambridge University Press, 1985-01-31
Pages: 396
Language: en
ISBN_10:0521277035
ISBN_13:9780521277037
Subject: Science

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