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Numerical Simulation Of Viscous Shocked Accretion Flows Around Black Holes
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Book Synopsis Numerical Simulation of Viscous Shocked Accretion Flows Around Black Holes by : Kinsuk Giri
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.
Book Synopsis Computational Mathematics, Nanoelectronics, and Astrophysics by : Shaibal Mukherjee
Download or read book Computational Mathematics, Nanoelectronics, and Astrophysics written by Shaibal Mukherjee and published by Springer Nature. This book was released on 2021-03-23 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of original papers presented at the International Conference on Computational Mathematics in Nanoelectronics and Astrophysics (CMNA 2018) held at the Indian Institute of Technology Indore, India, from 1 to 3 November 2018. It aims at presenting recent developments of computational mathematics in nanoelectronics, astrophysics and related areas of space sciences and engineering. These proceedings discuss the most advanced innovations, trends and real-world challenges encountered and their solutions with the application of computational mathematics in nanoelectronics, astrophysics and space sciences. From focusing on nano-enhanced smart technological developments to the research contributions of premier institutes in India and abroad on ISRO’s future space explorations—this book includes topics from highly interdisciplinary areas of research. The book is of interest to researchers, students and practising engineers working in diverse areas of science and engineering, ranging from applied and computational mathematics to nanoelectronics, nanofabrications and astrophysics.
Book Synopsis Exploring the Universe: From Near Space to Extra-Galactic by : Banibrata Mukhopadhyay
Download or read book Exploring the Universe: From Near Space to Extra-Galactic written by Banibrata Mukhopadhyay and published by Springer. This book was released on 2018-10-01 with total page 642 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Festschrift dedicated to the 60th birth anniversary of Prof. Sandip K. Chakrabarti, a well-known Indian astrophysicist, presents a collection of contributions by about fifty scientists who work on diverse topics in contemporary astrophysics and space science including new and low-cost balloon borne experiments, planetary science, astrochemistry and the origin of life, ionospheric research and earthquake predictions, relativistic astrophysics around black holes, and finally, the observational signatures and radiative properties of compact objects. All the authors are well known scholars in their respective subject and are all PhD students of Prof. Sandip K. Chakrabarti. The book demonstrates a two-dimensional evolution of research areas triggered by Sandip Chakrabarti over the past few decades. The first dimension represents the evolution and diversification of Chakrabarti’s own research in which new students were trained. A second dimension arises from the evolution of the research topics pursued by Chakrabarti’s fifty odd doctoral students, many of whom have become renowned scientists in their own right, after starting with a certain subject under Chakrabarti and then migrating to completely new subjects with dexterity. The editors have compiled and edited the articles appropriately to some extent to suit the spirit of this Festschrift on the one hand and to keep balance in diverse topics on the other. Thus this volume also provides an overview for whosoever wishes to enter the important subjects of compact objects, astrochemistry, ionospheric science or space exploration in near space. New graduates, PhD scholars, teachers and researchers will benefit from this volume. Moreover it is a record of tremendous success of a school in a range of vast topics.
Book Synopsis Numerical Simulation of Viscous Accretion Disks by : Ronald Eugene Drimmel
Download or read book Numerical Simulation of Viscous Accretion Disks written by Ronald Eugene Drimmel and published by . This book was released on 1995 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Black Hole Accretion Dynamics in Numerical Simulations by : Kenneth B. Henisey
Download or read book Black Hole Accretion Dynamics in Numerical Simulations written by Kenneth B. Henisey and published by . This book was released on 2011 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light curves from accreting black hole systems exhibit variability which has neither been conclusively explained by analytic models nor seen in numerical simulations of these flows. Until recently, these computational studies have uniformly assumed alignment between the angular momenta of a black hole and its accretion disk. In contrast, observational data suggests that these tilted configurations may exist in real astrophysical systems and theoretical work indicates that tilt is accompanied by disk eccentricity and warp capable of exciting trapped diskoseismological modes. This dissertation analyzes the spatial and temporal behavior of fluid in fully three-dimensional, general relativistic, magnetohydrodynamical simulations, the first of their kind, of both tilted and untilted black hole accretion flows. We uncover characteristically greater variability in tilted simulations at frequencies similar to those predicted by the formalism of trapped modes, but ultimately conclude that its spatial structure is inconsistent with a modal interpretation. We find instead that over-dense clumps orbiting on roughly Keplerian trajectories appear generically in our global simulations independent of tilt and that these blobs give rise to acoustic wakes inside and outside of their corotation radius. Our three dimensional analysis of the flow yields two additional results. First, we confirm the strongly asymmetric nature of the tilted configuration by further describing two previously identified standing shock structures in the background flow; second, we show that these shocks effectively amplify the blob-wake variability and thus explain the increased variability observed in our tilted datasets. Our identification of clumps, wakes, and wake-shock interactions in these tilted, fully general relativistic, magnetohydrodynamical simulations will certainly be relevant to those models which incorporate tilt as a way to explain the observed variability in black hole accretion flow.
Book Synopsis The Physics of Accretion onto Black Holes by : Maurizio Falanga
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.
Book Synopsis Numerical Simulation of Viscous Accretion Disks by : Ronald Drimmel
Download or read book Numerical Simulation of Viscous Accretion Disks written by Ronald Drimmel and published by . This book was released on 2019-05-31 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Numerical Simulation of Viscous Accretion Disks" by Ronald Eugene Drimmel, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.
Book Synopsis The Journal of the Korean Physical Society by :
Download or read book The Journal of the Korean Physical Society written by and published by . This book was released on 2006 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Black Hole Gravitohydromagnetics by : Brian Punsly
Download or read book Black Hole Gravitohydromagnetics written by Brian Punsly and published by Springer Science & Business Media. This book was released on 2008-12-15 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Black hole gravitohydromagnetics (GHM) is developed from the rudiments to the frontiers of research in this book. GHM describes plasma interactions that combine the effects of gravity and a strong magnetic field, in the vicinity (ergosphere) of a rapidly rotating black hole. This topic was created in response to the astrophysical quest to understand the central engines of radio loud extragalactic radio sources. The theory describes a "torsional tug of war" between rotating ergospheric plasma and the distant asymptotic plasma that extracts the rotational inertia of the black hole. The recoil from the struggle between electromagnetic and gravitational forces near the event horizon is manifested as a powerful pair of magnetized particle beams (jets) that are ejected at nearly the speed of light. This second edition of the book is updated throughout and contains a completely new chapter discussing state of the art and results of numerical simulations of ergospheric disk jets occurring in magnetohydrodynamic accretion flows.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Black Holes: Theory and Observation by : Friedrich W. Hehl
Download or read book Black Holes: Theory and Observation written by Friedrich W. Hehl and published by Springer Science & Business Media. This book was released on 1998-11-26 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses graduate students in the first place and is meant as a modern compendium to the existing texts on black hole astrophysics. The authors present in pedagogically written articles our present knowledge on black holes covering mathematical models including numerical aspects and physics and astronomical observations as well. In addition, in their write-up of a panel discussion the participants of the school address the existence of black holes consenting that it has by now been verified with certainty.
Book Synopsis Observational Evidence for Black Holes in the Universe by : Sandip K. Chakrabarti
Download or read book Observational Evidence for Black Holes in the Universe written by Sandip K. Chakrabarti and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: A conference on `Observational Evidence for Black Holes in the Universe' was held in Calcutta during January 10-17, 1998. This was the first time that experts had gathered to debate and discuss topics such as: Should black holes exist? If so, how to detect them? Have we found them? This book is the essence of this gathering. Black holes are enigmatic objects since it is impossible to locate them through direct observations. State-of-the-art theoretical works and numerical simulations have given us enough clues of what to look for. Observations, from both ground and space-based missions, have been able to find these tell-tale signatures. This book is a compendium of our present knowledge about these theories and observations. Combined, they give a thorough idea of whether black holes, galactic as well as extragalactic, have been detected or not. Forty-one experts of the subject have contributed to this volume to make it the most comprehensive to date.
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1998 with total page 980 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Fluid Dynamics by : T. J. Chung
Download or read book Computational Fluid Dynamics written by T. J. Chung and published by Cambridge University Press. This book was released on 2002-02-07 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasingly, computational fluid dynamics (CFD) techniques are being used to study and solve complex fluid flow and heat transfer problems. This comprehensive book ranges from elementary concepts for the beginner to state-of-the-art CFD for the practitioner. It begins with CFD preliminaries, in which the basic principles of finite difference (FD), finite element (FE), and finite volume (FV) methods are discussed and illustrated through examples, with step-by-step hand calculations. Then, FD and FE methods respectively are covered, including both historical developments and recent contributions. The next section is devoted to structured and unstructured grids, adaptive methods, computing techniques, and parallel processing. Finally, the author describes a variety of practical applications to problems in turbulence, reacting flows and combustion, acoustics, combined mode radiative heat transfer, multiphase flows, electromagnetic fields, and relativistic astrophysical flows. Students and practitioners - particularly in mechanical, aerospace, chemical, and civil engineering - will use this authoritative text to learn about and apply numerical techniques to the solution of fluid dynamics problems.
Book Synopsis On the Numerical Simulation of Advection Dominated Accretion Flows by : Steffen Brinkmann
Download or read book On the Numerical Simulation of Advection Dominated Accretion Flows written by Steffen Brinkmann and published by . This book was released on 2009 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Theory of Black Hole Accretion Discs by : Marek A. Abramowicz
Download or read book Theory of Black Hole Accretion Discs written by Marek A. Abramowicz and published by Cambridge University Press. This book was released on 1998 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive and up-to-date review of our new understanding of accretion disks around black holes - with chapters from experts from around the world.
