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Author : Javiera M. Guedes
Publisher :
ISBN 13 :
Total Pages : 414 pages
Book Rating : 4.:/5 (26 download)
Download or read book Numerical Simulations of Spiral Galaxy Formation and Recoiling Black Holes written by Javiera M. Guedes and published by . This book was released on 2011 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chi-hun Kim
Publisher : Stanford University
ISBN 13 :
Total Pages : 189 pages
Book Rating : 4.F/5 ( download)
Download or read book Galaxy Formation and Mergers with Stars and Massive Black Holes written by Chi-hun Kim and published by Stanford University. This book was released on 2011 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: While mounting observational evidence suggests the coevolution of galaxies and their embedded massive black holes (MBHs), a comprehensive astrophysical understanding which incorporates both galaxies and MBHs has been missing. To tackle the nonlinear processes of galaxy formation, we develop a state-of-the-art numerical framework which self-consistently models the interplay between galactic components: dark matter, gas, stars, and MBHs. Utilizing this physically motivated tool, we present an investigation of a massive star-forming galaxy hosting a slowly growing MBH in a cosmological LCDM simulation. The MBH feedback heats the surrounding gas and locally suppresses star formation in the galactic inner core. In simulations of merging galaxies, the high-resolution adaptive mesh allows us to observe widespread starbursts via shock-induced star formation, and the interplay between the galaxies and their embedding medium. Fast growing MBHs in merging galaxies drive more frequent and powerful jets creating sizable bubbles at the galactic centers. We conclude that the interaction between the interstellar gas, stars and MBHs is critical in understanding the star formation history, black hole accretion history, and cosmological evolution of galaxies. Expanding upon our extensive experience in galactic simulations, we are well poised to apply this tool to other challenging, yet highly rewarding tasks in contemporary astrophysics, such as high-redshift quasar formation.
Author : Peter Robert Williams
Publisher :
ISBN 13 :
Total Pages : 410 pages
Book Rating : 4.:/5 (895 download)
Download or read book Numerical Simulations of the Formation of Spiral Galaxies and the Origins of the Hubble Sequence of Galaxies written by Peter Robert Williams and published by . This book was released on 1998 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Adonis D. Wachter
Publisher :
ISBN 13 :
Total Pages : 422 pages
Book Rating : 4.0/5 (926 download)
Download or read book Black Holes and Galaxy Formation written by Adonis D. Wachter and published by . This book was released on 2010 with total page 422 pages. Available in PDF, EPUB and Kindle. Book excerpt: Galaxies are the basic unit of cosmology. The study of galaxy formation is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning. The physics of galaxy formation is complicated because it deals with the dynamics of stars, thermodynamics of gas and energy production of stars. A black hole is a massive object whose gravitational field is so intense that it prevents any form of matter or radiation to escape. It is hypothesised that the most massive galaxies in the universe -- "elliptical galaxies" -- grow simultaneously with the supermassive black holes at their centres, giving us much stronger evidence that black holes control galaxy formation. This book reviews new evidence in the field.
Author : Ji-hoon Kim
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (746 download)
Download or read book Galaxy Formation and Mergers with Stars and Massive Black Holes written by Ji-hoon Kim and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: While mounting observational evidence suggests the coevolution of galaxies and their embedded massive black holes (MBHs), a comprehensive astrophysical understanding which incorporates both galaxies and MBHs has been missing. To tackle the nonlinear processes of galaxy formation, we develop a state-of-the-art numerical framework which self-consistently models the interplay between galactic components: dark matter, gas, stars, and MBHs. Utilizing this physically motivated tool, we present an investigation of a massive star-forming galaxy hosting a slowly growing MBH in a cosmological LCDM simulation. The MBH feedback heats the surrounding gas and locally suppresses star formation in the galactic inner core. In simulations of merging galaxies, the high-resolution adaptive mesh allows us to observe widespread starbursts via shock-induced star formation, and the interplay between the galaxies and their embedding medium. Fast growing MBHs in merging galaxies drive more frequent and powerful jets creating sizable bubbles at the galactic centers. We conclude that the interaction between the interstellar gas, stars and MBHs is critical in understanding the star formation history, black hole accretion history, and cosmological evolution of galaxies. Expanding upon our extensive experience in galactic simulations, we are well poised to apply this tool to other challenging, yet highly rewarding tasks in contemporary astrophysics, such as high-redshift quasar formation.
Author : Magnus Thomasson
Publisher :
ISBN 13 :
Total Pages : 19 pages
Book Rating : 4.:/5 (186 download)
Download or read book Numerical Simulations of Spiral Galaxies written by Magnus Thomasson and published by . This book was released on 1989 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kinsuk Giri
Publisher : Springer
ISBN 13 : 3319095404
Total Pages : 148 pages
Book Rating : 4.3/5 (19 download)
Download or read book Numerical Simulation of Viscous Shocked Accretion Flows Around Black Holes written by Kinsuk Giri and published by Springer. This book was released on 2014-08-30 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work developed in this thesis addresses very important and relevant issues of accretion processes around black holes. Beginning by studying the time variation of the evolution of inviscid accretion discs around black holes and their properties, the author investigates the change of the pattern of the flows when the strength of the shear viscosity is varied and cooling is introduced. He succeeds to verify theoretical predictions of the so called Two Component Advective Flow (TCAF) solution of the accretion problem onto black holes through numerical simulations under different input parameters. TCAF solutions are found to be stable. And thus explanations of spectral and timing properties (including Quasi-Period Oscillations, QPOs) of galactic and extra-galactic black holes based on shocked TCAF models appear to have a firm foundation.
Author : Nicholas Chamberlain Stone
Publisher : Springer
ISBN 13 : 3319126768
Total Pages : 162 pages
Book Rating : 4.3/5 (191 download)
Download or read book The Tidal Disruption of Stars by Supermassive Black Holes written by Nicholas Chamberlain Stone and published by Springer. This book was released on 2014-12-13 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a general introduction to the rapidly developing astrophysical frontier of stellar tidal disruption, but also details original thesis research on the subject. This work has shown that recoiling black holes can disrupt stars far outside a galactic nucleus, errors in the traditional literature have strongly overestimated the maximum luminosity of “deeply plunging” tidal disruptions, the precession of transient accretion disks can encode the spins of supermassive black holes, and much more. This work is based on but differs from the original thesis that was formally defended at Harvard, which received both the Roger Doxsey Award and the Chambliss Astronomy Achievement Student Award from the American Astronomical Society.
Author : Matteo Tomassetti
Publisher :
ISBN 13 :
Total Pages : 127 pages
Book Rating : 4.:/5 (99 download)
Download or read book Numerical Simulations of Galaxy Formation written by Matteo Tomassetti and published by . This book was released on 2015 with total page 127 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jeffrey Paul Gardner
Publisher :
ISBN 13 :
Total Pages : 175 pages
Book Rating : 4.:/5 (467 download)
Download or read book Numerical Simulations of Galaxy Formation in a Cosmological Context written by Jeffrey Paul Gardner and published by . This book was released on 2000 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Maurizio Falanga
Publisher : Springer
ISBN 13 : 1493922270
Total Pages : 483 pages
Book Rating : 4.4/5 (939 download)
Download or read book The Physics of Accretion onto Black Holes written by Maurizio Falanga and published by Springer. This book was released on 2014-10-28 with total page 483 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a comprehensive summary on the physical models and current theory of black hole accretion, growth and mergers, in both the supermassive and stellar-mass cases. This title reviews in-depth research on accretion on all scales, from galactic binaries to intermediate mass and supermassive black holes. Possible future directions of accretion are also discussed. The following main themes are covered: a historical perspective; physical models of accretion onto black holes of all masses; black hole fundamental parameters; and accretion, jets and outflows. An overview and outlook on the topic is also presented. This volume summarizes the status of the study of astrophysical black hole research and is aimed at astrophysicists and graduate students working in this field. Originally published in Space Science Reviews, Vol 183/1-4, 2014.
Author : Yipeng Jing
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (594 download)
Download or read book High-resolution Numerical Simulations for Galaxy Formation written by Yipeng Jing and published by . This book was released on 2002 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A.J. Barger
Publisher : Springer Science & Business Media
ISBN 13 : 1402024711
Total Pages : 310 pages
Book Rating : 4.4/5 (2 download)
Download or read book Supermassive Black Holes in the Distant Universe written by A.J. Barger and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Quasars, and the menagerie of other galaxies with "unusual nuclei", now collectively known as Active Galactic Nuclei or AGN, have, in one form or another, sparked the interest of astronomers for over 60 years. The only known mechanism that can explain the staggering amounts of energy emitted by the innermost regions of these systems is gravitational energy release by matter falling towards a supermassive black hole --- a black hole whose mass is millions to billions of times the mass of our Sun. AGN emit radiation at all wavelengths. X-rays originating at a distance of a few times the event horizon of the black hole are the emissions closest to the black hole that we can detect; thus, X-rays directly reveal the presence of active supermassive black holes. Oftentimes, however, the supermassive black holes that lie at the centers of AGN are cocooned in gas and dust that absorb the emitted low energy X-rays and the optical and ultraviolet light, hiding the black hole from view at these wavelengths. Until recently, this low-energy absorption presented a major obstacle in observational efforts to map the accretion history of the universe. In 1999 and 2000, the launches of the Chandra and XMM-Newton X-ray Observatories finally broke the impasse. The impact of these observatories on X-ray astronomy is similar to the impact that the Hubble Space Telescope had on optical astronomy. The astounding new data from these observatories have enabled astronomers to make enormous advances in their understanding of when accretion occurs.
Author : Giuseppe Bertin
Publisher : MIT Press
ISBN 13 : 9780262023962
Total Pages : 296 pages
Book Rating : 4.0/5 (239 download)
Download or read book Spiral Structure in Galaxies written by Giuseppe Bertin and published by MIT Press. This book was released on 1996 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: How does it happen that billions of stars can cooperate to produce the beautiful spirals that characterize so many galaxies, including ours? This book presents a theory of spiral structure that has been developed over the past three decades under the continuous stimulus of new observational studies. The theory unfolds in a way that can be grasped by any reader with an undergraduate science background who is interested in astronomy, as well as by graduate students and scientists actively involved in astronomy or related subjects who want to see the "backbone" and the physical content of the theory. The foundations of this theoretical framework were laid in the early 1960s, following the pioneering work of B. Lindblad. C. C. Lin had already contributed significantly to the field of fluid mechanics when he turned his attention to spiral structures, and he has focused on the problem ever since. Giuseppe Bertin joined this research effort when he first visited at MIT in 1975, bringing to the project knowledge from his work on elliptical galaxies and plasma astrophysics. Together, Bertin and Lin have contributed to the exciting developments on spiral structure of the last few decades, working closely with many observers and other theorists. In this book they describe the density-wave theory with the goal of making the key concepts and astrophysical implications explicit and accessible. The essence of the solution Bertin and Lin present is that the spirals are wave rather than material phenomena and generally trace intrinsic characteristics of the individual galaxies. The book is in three parts--Physical Concepts, Observational Studies, and Dynamical Mechanisms--with most of the technical details confined to the last part.
Author : Harley Brooks Katz
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (16 download)
Download or read book Numerical Simulations of Galaxy Formation During the Epoch of Reionization written by Harley Brooks Katz and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M Colpi
Publisher : CRC Press
ISBN 13 : 9780367391164
Total Pages : 488 pages
Book Rating : 4.3/5 (911 download)
Download or read book Joint Evolution of Black Holes and Galaxies written by M Colpi and published by CRC Press. This book was released on 2019-08-30 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: Black holes are among the most mysterious objects that the human mind has been capable of imagining. As pure mathematical constructions, they are tools for exploiting the fundamental laws of physics. As astronomical sources, they are part of our cosmic landscape, warping space-time, coupled to the large-scale properties and life cycle of their host galaxy, and perhaps even linked to galaxy formation. This volume, which grew from a recent doctoral school sponsored by the Italian Society of Relativity and Gravitation, brings together contributions from leading authorities to provide a review of recent developments in the study of the astrophysical black holes that inhabit nearby galaxies and distant quasars. These lectures reveal the deep symbiotic relationship between black holes and their cosmic environment and show that black holes are key sources for exploring not only our local universe, but also our cosmic dawn. Topics range from the observational evidence for supermassive black holes and the joint evolution of black holes and galaxies to the cold dark matter paradigm of hierarchical galaxy formation and from the cosmic history of the diffuse intergalactic medium to the ecology of black holes in star clusters.
Author : Marc Favata
Publisher :
ISBN 13 :
Total Pages : 488 pages
Book Rating : 4.:/5 (137 download)
Download or read book Kicking Black Holes, Crushing Neutron Stars, and the Validity of the Adiabatic Approximation for Extreme-mass-ratio Inspirals written by Marc Favata and published by . This book was released on 2006 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
