Accretion Flows in Astrophysics - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Accretion Flows in Astrophysics write by Nikolay Shakura. This book was released on 2018-10-03. Accretion Flows in Astrophysics available in PDF, EPUB and Kindle. This book highlights selected topics of standard and modern theory of accretion onto black holes and magnetized neutron stars. The structure of stationary standard discs and non-stationary viscous processes in accretion discs are discussed to the highest degree of accuracy analytic theory can provide, including relativistic effects in flat and warped discs around black holes. A special chapter is dedicated to a new theory of subsonic settling accretion onto a rotating magnetized neutron star. The book also describes supercritical accretion in quasars and its manifestation in lensing events. Several chapters cover the underlying physics of viscosity in astrophysical discs with some important aspects of turbulent viscosity generation. The book is aimed at specialists as well as graduate students interested in the field of theoretical astrophysics.
Accretion Power in Astrophysics
Accretion Power in Astrophysics - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Accretion Power in Astrophysics write by Juhan Frank. This book was released on 2002-01-17. Accretion Power in Astrophysics available in PDF, EPUB and Kindle. Accretion Power in Astrophysics examines accretion as a source of energy in both binary star systems containing compact objects, and in active galactic nuclei. Assuming a basic knowledge of physics, the authors describe the physical processes at work in accretion discs and other accretion flows. The first three chapters explain why accretion is a source of energy, and then present the gas dynamics and plasma concepts necessary for astrophysical applications. The next three chapters then develop accretion in stellar systems, including accretion onto compact objects. Further chapters give extensive treatment of accretion in active galactic nuclei, and describe thick accretion discs. A new chapter discusses recently discovered accretion flow solutions. The third edition is greatly expanded and thoroughly updated. New material includes a detailed treatment of disc instabilities, irradiated discs, disc warping, and general accretion flows. The treatment is suitable for advanced undergraduates, graduate students and researchers.
MHD Flows in Compact Astrophysical Objects
MHD Flows in Compact Astrophysical Objects - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook MHD Flows in Compact Astrophysical Objects write by Vasily S. Beskin. This book was released on 2009-12-08. MHD Flows in Compact Astrophysical Objects available in PDF, EPUB and Kindle. Accretion flows, winds and jets of compact astrophysical objects and stars are generally described within the framework of hydrodynamical and magnetohydrodynamical (MHD) flows. Analytical analysis of the problem provides profound physical insights, which are essential for interpreting and understanding the results of numerical simulations. Providing such a physical understanding of MHD Flows in Compact Astrophysical Objects is the main goal of this book, which is an updated translation of a successful Russian graduate textbook. The book provides the first detailed introduction into the method of the Grad-Shafranov equation, describing analytically the very broad class of hydrodynamical and MHD flows. It starts with the classical examples of hydrodynamical accretion onto relativistic and nonrelativistic objects. The force-free limit of the Grad-Shafranov equation allows us to analyze in detail the physics of the magnetospheres of radio pulsars and black holes, including the Blandford-Znajek process of energy extraction from a rotating black hole immersed in an external magnetic field. Finally, on the basis of the full MHD version of the Grad-Shafranov equation the author discusses the problems of jet collimation and particle acceleration in Active Galactic Nuclei, radio pulsars, and Young Stellar Objects. The comparison of the analytical results with numerical simulations demonstrates their good agreement. Assuming that the reader is familiar with the basic physical and mathematical concepts of General Relativity, the author uses the 3+1 split approach which allows the formulation of all results in terms of physically clear language of three dimensional vectors. The book contains detailed derivations of equations, numerous exercises, and an extensive bibliography. It therefore serves as both an introductory text for graduate students and a valuable reference work for researchers in the field.
Theory of Transonic Astrophysical Flows
Theory of Transonic Astrophysical Flows - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Theory of Transonic Astrophysical Flows write by Sandip K. Chakrabarti. This book was released on 1990. Theory of Transonic Astrophysical Flows available in PDF, EPUB and Kindle. This book presents methods of studying transonic flows applicable to various astrophysical circumstances. This is the first book of its kind and efforts have been made to be as thorough as possible. It gives complete mathematical solutions for the study in this area including various shock transitions. For any theoretical astrophysicists this book is expected to be very useful as the formalism discussed can be applied to all the branches. Both axisymmetric and non-axisymmetric flows are studied.
Accretion Processes in Astrophysics
Accretion Processes in Astrophysics - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Accretion Processes in Astrophysics write by Ignacio Gonzl̀ez Martn̕ez-Pas̕. This book was released on 2014-02-17. Accretion Processes in Astrophysics available in PDF, EPUB and Kindle. It has been more than fifty years since the first significant paper on accretion flows was written. In recent years, X-ray satellites capable of identifying accretion disks and radiation jets - indications that accretion has taken place - have significantly advanced our understanding of these phenomena. This volume presents a comprehensive and up-to-date introduction to the major theoretical and observational topics associated with accretion processes in astrophysics. Comprising lectures presented at the twenty-first Winter School of the Canary Islands Institute of Astrophysics, the text emphasises the physical aspects of accretion, investigating how radiation jets are produced, how accretion power is divided between jets and radiated energy, the geometry of accretion flow, and the accretion processes of active galactic nuclei. Written by an international team of experienced scientists, chapters offer young researchers key analytical tools for supporting and carrying out the next generation of front-line research.
