Macdonald, Douglas A. (Douglas Alan)
Overview
Works:  7 works in 18 publications in 2 languages and 546 library holdings 

Genres:  Academic theses 
Roles:  Author 
Publication Timeline
.
Most widely held works by
Douglas A Macdonald
Black holes : the membrane paradigm by
Kip S Thorne(
Book
)
12 editions published between 1986 and 1988 in English and Russian and held by 539 WorldCat member libraries worldwide
A pedagogical introduction to the physics of black holes. The membrane paradigm represents the fourdimensional spacetime of the black hole's "event horizon" as a twodimensional membrane in threedimensional space, allowing the reader to understand and compute the behavior of black holes in complex astrophysical environments
12 editions published between 1986 and 1988 in English and Russian and held by 539 WorldCat member libraries worldwide
A pedagogical introduction to the physics of black holes. The membrane paradigm represents the fourdimensional spacetime of the black hole's "event horizon" as a twodimensional membrane in threedimensional space, allowing the reader to understand and compute the behavior of black holes in complex astrophysical environments
Blackhole electrodynamics by
Douglas A Macdonald(
)
1 edition published in 1984 in English and held by 2 WorldCat member libraries worldwide
1 edition published in 1984 in English and held by 2 WorldCat member libraries worldwide
Chernye dyry : membrannyĭ podkhod(
Book
)
1 edition published in 1988 in Russian and held by 2 WorldCat member libraries worldwide
1 edition published in 1988 in Russian and held by 2 WorldCat member libraries worldwide
BlackHole Electrodynamics by
Douglas A Macdonald(
Book
)
1 edition published in 1984 in Undetermined and held by 1 WorldCat member library worldwide
<p>This dissertation considers several aspects of the structure and dynamics of electromagnetic fields around black holes. The fourdimensional, covariant laws of electrodynamics are reformulated in a 3 + 1 (space+time) language in which the key quantities are threedimensional vectors lying in hypersurfaces of a constant global time <i>t</i>. This formulation is applied to the BlandfordZnajek model of power generation in quasars, which consists of a supermassive black hole surrounded by an accretion disk that holds a magnetic field on the hole, with the rotational energy and angular momentum of the hole and disk being extracted by electromagnetic torques. The 3 + 1 formalism allows the theory of stationary, axisymmetric black holes and their magnetospheres to be couched in an "absolutespace/universaltime" language very similar to the flat spacetime theory of pulsar electrodynamics; and this similarity allows fiatspace pulsar concepts to be extended to curvedspace black holes. The BlandfordZnajek quasar model is reformulated in terms of a DC circuittheory analysis, and action principles describing the overall structure of the magnetosphere and the field distribution on the horizon are developed. A general prescription for constructing global models of forcefree magnetospheres is developed and this prescription is used to generate numerical models of blackhole magnetospheres for a variety of field configurations and blackhole angular velocities. The electromagnetic boundary conditions at the horizon of a black hole are described in terms of a recently developed "membrane viewpoint". The necessity and efficacy of using a "stretched horizon" in the membrane viewpoint is discussed, and is illustrated by two simple dynamical problems involving electromagnetic fields near blackhole horizons.</p>
1 edition published in 1984 in Undetermined and held by 1 WorldCat member library worldwide
<p>This dissertation considers several aspects of the structure and dynamics of electromagnetic fields around black holes. The fourdimensional, covariant laws of electrodynamics are reformulated in a 3 + 1 (space+time) language in which the key quantities are threedimensional vectors lying in hypersurfaces of a constant global time <i>t</i>. This formulation is applied to the BlandfordZnajek model of power generation in quasars, which consists of a supermassive black hole surrounded by an accretion disk that holds a magnetic field on the hole, with the rotational energy and angular momentum of the hole and disk being extracted by electromagnetic torques. The 3 + 1 formalism allows the theory of stationary, axisymmetric black holes and their magnetospheres to be couched in an "absolutespace/universaltime" language very similar to the flat spacetime theory of pulsar electrodynamics; and this similarity allows fiatspace pulsar concepts to be extended to curvedspace black holes. The BlandfordZnajek quasar model is reformulated in terms of a DC circuittheory analysis, and action principles describing the overall structure of the magnetosphere and the field distribution on the horizon are developed. A general prescription for constructing global models of forcefree magnetospheres is developed and this prescription is used to generate numerical models of blackhole magnetospheres for a variety of field configurations and blackhole angular velocities. The electromagnetic boundary conditions at the horizon of a black hole are described in terms of a recently developed "membrane viewpoint". The necessity and efficacy of using a "stretched horizon" in the membrane viewpoint is discussed, and is illustrated by two simple dynamical problems involving electromagnetic fields near blackhole horizons.</p>
BlackHole Electrodynamics by
Douglas A Macdonald(
)
1 edition published in 1984 in Undetermined and held by 1 WorldCat member library worldwide
<p>This dissertation considers several aspects of the structure and dynamics of electromagnetic fields around black holes. The fourdimensional, covariant laws of electrodynamics are reformulated in a 3 + 1 (space+time) language in which the key quantities are threedimensional vectors lying in hypersurfaces of a constant global time <i>t</i>. This formulation is applied to the BlandfordZnajek model of power generation in quasars, which consists of a supermassive black hole surrounded by an accretion disk that holds a magnetic field on the hole, with the rotational energy and angular momentum of the hole and disk being extracted by electromagnetic torques. The 3 + 1 formalism allows the theory of stationary, axisymmetric black holes and their magnetospheres to be couched in an "absolutespace/universaltime" language very similar to the flat spacetime theory of pulsar electrodynamics; and this similarity allows fiatspace pulsar concepts to be extended to curvedspace black holes. The BlandfordZnajek quasar model is reformulated in terms of a DC circuittheory analysis, and action principles describing the overall structure of the magnetosphere and the field distribution on the horizon are developed. A general prescription for constructing global models of forcefree magnetospheres is developed and this prescription is used to generate numerical models of blackhole magnetospheres for a variety of field configurations and blackhole angular velocities. The electromagnetic boundary conditions at the horizon of a black hole are described in terms of a recently developed "membrane viewpoint". The necessity and efficacy of using a "stretched horizon" in the membrane viewpoint is discussed, and is illustrated by two simple dynamical problems involving electromagnetic fields near blackhole horizons.</p>
1 edition published in 1984 in Undetermined and held by 1 WorldCat member library worldwide
<p>This dissertation considers several aspects of the structure and dynamics of electromagnetic fields around black holes. The fourdimensional, covariant laws of electrodynamics are reformulated in a 3 + 1 (space+time) language in which the key quantities are threedimensional vectors lying in hypersurfaces of a constant global time <i>t</i>. This formulation is applied to the BlandfordZnajek model of power generation in quasars, which consists of a supermassive black hole surrounded by an accretion disk that holds a magnetic field on the hole, with the rotational energy and angular momentum of the hole and disk being extracted by electromagnetic torques. The 3 + 1 formalism allows the theory of stationary, axisymmetric black holes and their magnetospheres to be couched in an "absolutespace/universaltime" language very similar to the flat spacetime theory of pulsar electrodynamics; and this similarity allows fiatspace pulsar concepts to be extended to curvedspace black holes. The BlandfordZnajek quasar model is reformulated in terms of a DC circuittheory analysis, and action principles describing the overall structure of the magnetosphere and the field distribution on the horizon are developed. A general prescription for constructing global models of forcefree magnetospheres is developed and this prescription is used to generate numerical models of blackhole magnetospheres for a variety of field configurations and blackhole angular velocities. The electromagnetic boundary conditions at the horizon of a black hole are described in terms of a recently developed "membrane viewpoint". The necessity and efficacy of using a "stretched horizon" in the membrane viewpoint is discussed, and is illustrated by two simple dynamical problems involving electromagnetic fields near blackhole horizons.</p>
Černye dyry : membrannyj podhod(
Book
)
1 edition published in 1988 in Russian and held by 1 WorldCat member library worldwide
1 edition published in 1988 in Russian and held by 1 WorldCat member library worldwide
Morality and the criminal law : an examination of some recent attempts to define theoretical limits to the proper scope of
the criminal law by
Douglas A Macdonald(
)
1 edition published in 1972 in English and held by 0 WorldCat member libraries worldwide
1 edition published in 1972 in English and held by 0 WorldCat member libraries worldwide
Audience Level
0 

1  
Kids  General  Special 
Related Identities
 Thorne, Kip S. Author
 Price, Richard H. 1943
 Price, Richard H. 1943
 Полнарев, А. Г (Александр Григорьевич) Translator
 Новиков, И. Д (Игорь Дмитриевич) Translator
 Фролов, В. П (Валерий Павлович) Translator
 Price, Richard H.
Associated Subjects