Noyaux Actifs Des Galaxies
Author: Evry L. Schatzman
Publisher:
Published: 1981
Total Pages: 260
ISBN-13:
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Author: Evry L. Schatzman
Publisher:
Published: 1981
Total Pages: 260
ISBN-13:
DOWNLOAD EBOOKAuthor: Françoise Combes
Publisher: ISTE Group
Published: 2023-07-18
Total Pages: 340
ISBN-13: 1789480876
DOWNLOAD EBOOKPratiquement toutes les galaxies hébergent un trou noir supermassif en leur centre. Ces trous noirs croissent en masse en symbiose avec leur galaxie hôte et modèrent leur formation d’étoiles. Lorsque la matière est entraînée vers le noyau de la galaxie, un disque d’accrétion se forme, où le moment cinétique est transféré vers l’extérieur. Une énergie considérable est libérée lorsque la matière tombe dans le trou noir : c’est le phénomène des noyaux actifs de galaxie (AGN). Un noyau peut briller mille fois plus que la galaxie entière avec ses 200 milliards d’étoiles. L’activité nucléaire peut prendre de nombreuses formes, des quasars très puissants aux galaxies de Seyfert plus ordinaires, en passant par les radio-galaxies, qui peuvent lancer des jets jusqu’à dix fois le rayon de la galaxie. Noyaux actifs de galaxie examine toutes ces manifestations et présente une vue unifiée des AGN. Lorsque deux galaxies fusionnent, un trou noir binaire se forme et les deux trous noirs spiralent l’un vers l’autre pour fusionner, émettant des ondes gravitationnelles détectables par le futur satellite LISA.
Author: Siegfried Böhme
Publisher: Springer Science & Business Media
Published: 2013-11-09
Total Pages: 857
ISBN-13: 3662123371
DOWNLOAD EBOOKAstronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is devoted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documenta tion of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the average time interval between the date of receipt of the original literature and publication of the abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, compared to which our system of accumu lating abstracts for about six months offers the advantage of greater convenience for the user. Volume 32 contains literature published in 1982 and received before February 11, 1983; some older literature which was received late and which is not recorded in earlier volumes is also included. We acknowledge with thanks contributions to this volume by Dr. J. Bou~a, Prague, who surveyed journals and publications in Czech and supplied us with abstracts in English.
Author: Jean Massicot
Publisher: Lulu.com
Published: 2010-02-19
Total Pages: 590
ISBN-13: 1445298554
DOWNLOAD EBOOKUne approche des principales notions permettant de mieux comprendre l'astrophysique actuelle et les mystères de l'Univers
Author: Astronomisches Rechen-Institut
Publisher: Springer Science & Business Media
Published: 2013-06-29
Total Pages: 1592
ISBN-13: 3662123762
DOWNLOAD EBOOK"Astronomy and Astrophysics Abstracts" appearing twice a year has become oneof the fundamental publications in the fields of astronomy, astrophysics andneighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. The abstrats are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world.
Author: European Southern Observatory
Publisher:
Published: 1993
Total Pages: 430
ISBN-13:
DOWNLOAD EBOOKAuthor: Frédéric Marin
Publisher:
Published: 2021
Total Pages: 0
ISBN-13:
DOWNLOAD EBOOKAuthor: Canada-France-Hawaii Telescope Corporation
Publisher:
Published: 1991
Total Pages: 56
ISBN-13:
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