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Accretion Disks, Jets and High-Energy Phenomena in Astrophysics (Les Houches - Ecole d"Ete de Physique Theorique)

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Written in English

Subjects:

• Astrophysics,
• Stars, interstellar matter,
• Physics,
• Science/Mathematics,
• Science,
• Astronomy - General,
• Astrophysics & Space Science,
• Accretion Process,
• Black Hole Formation,
• Cosmic Rays,
• Galactic Compact Objects,
• Jets,
• Magnetohydrodynamics,
• Science / Astrophysics & Space Science,
• Young Stellar Objects

Book details:

Edition Notes

The Physical Object ID Numbers Contributions Vassily Beskin (Editor), Gilles Henri (Editor), Francois Menard (Editor), Guy Pelletier (Editor), Jean Dalibard (Editor) Format Hardcover Number of Pages 625 Open Library OL9054373M ISBN 10 3540201718 ISBN 10 9783540201717

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The accretion process is thought to play a key role in the Universe. This book explains, in a form intelligible to graduate students, its relation to the formation of new stars, to the energy release in compact objects and to the formation of black holes. The monograph describes how accretion processes are related to the presence of jets in stellar. Accretion discs, jets and high energy phenomena in astrophysics: 29 July August, Vassily Beskin, Gilles Henri, Guy Pelletier, Jean Dalibard, Francois Menard The accretion process is thought to play a key role in the Universe. Accretion discs, jets and high energy phenomena in astrophysics. Proceedings, Les Houches Summer School of Theoretical Physics, Session Les Houches, France, 29 July August, Cited by: Accretion disks are a ubiquitous phenomenon in astrophysics; active galactic nuclei, protoplanetary disks, and gamma ray bursts all involve accretion disks. These disks very often give rise to astrophysical jets coming from the vicinity of the central object. Jets are an efficient way for the star-disk system to shed angular momentum without losing too much mass.

The formation and powering of astrophysical jets are highly complex phenomena that are associated with many types of high-energy astronomical sources. They likely arise from dynamic interactions within accretion disks, whose active processes are commonly connected with compact central objects such as black holes, neutron stars or pulsars.   Buy Accretion Disks, Jets and High-Energy Phenomena in Astrophysics: Les Houches Session LXXVIII, July 29 - Aug (Les Houches - Ecole d'Ete de Physique Theorique) Softcover reprint of hardcover 1st ed. by Beskin, Vassily, Henri, Gilles, Menard, Francois, Pelletier, Guy, Dalibard, Jean (ISBN: ) from Amazon's Book : Paperback. Among the most basic results in this field is the observed relation between the jet mass loss rate and the disk accretion rate $$\dot{M}_w/\dot{M}_a \simeq$$ which is observed in many different systems and arises in numerical simulations of all kinds. This connection is a consequence of angular momentum extraction from the disk by magneto.   a. The magnetic field produced by the spinning accretion disk rotates at high velocity, accumulates energy from the disk and focuses the energy into an enormously luminous jet. b. The frame dragging produced by the spinning accretion disk accumulates energy from the disk and focuses energy into an enormously luminous jet. c.

Accretion discs, jets, and high energy phenomena in astrophysics = Disques d'accrétion, jets et phénomènes de haute énergie en astrophysique: Ecole d'été de physique des Houches, Session LXXVIII, 29 July August Nato Advanced Study Institute, Euro Summer School, Ecole thématique du CNRS. Accretion disk, a disklike flow of gas, plasma, dust, or particles around any astronomical object in which the material orbiting in the gravitational field of the object loses energy and angular momentum as it slowly spirals inward.   Scientists capture image of black hole emitting high-energy jets. journal Astronomy & Astrophysics, see the connection of the jet with the black hole and the accretion disc [of gas and. Black hole (BH) accretion is one of nature's most efficient energy extraction processes. When gas falls in, a significant fraction of its gravitational binding energy is either converted into radiation or flows outwards in the form of BH-driven jets and disc-driven winds.