Hasan / Gangadhara / Krishan Turbulence, Dynamos, Accretion Disks, Pulsars and Collective Plasma Processes

First Kodai-Trieste Workshop on Plasma Astrophysics held at the Kodaikanal Observatory, India, August 27 - September 7, 2007
1. Auflage 2008
ISBN: 978-1-4020-8868-1
Verlag: Springer Netherlands
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 342 Seiten

Reihe: Astrophysics and Space Science Proceedings

It is well established and appreciated by now that more than 99% of the baryonic matter in the universe is in the plasma state. Most astrophysical systems could be approximated as conducting fluids in a gravitational field. It is the combined effect of these two that gives rise to the mind boggling variety of configurations in the form of filaments, loops, jets and arches. The plasma structures that cannot last for more than a second or less in a laboratory remain intact for astronomical time and spatial scales in an astrophysical setting. The case in point is the well known extragalactic jets whose collimation and stability has remained an enigma inspite of the efforts of many for many long years. The high energy radiation sources such as the active galactic nuclei again summon the coherent plasma radiation processes for their exceptionally large output from regions of relatively small physical sizes. The generation of magnetic field, anomalous transport of angular momentum with decisive bearing on star formation processes, the ubiquitous MHD turbulence under conditions irreproducible in terrestrial laboratories are some of the generic issues still awaiting a concerted effort for their understanding. Quantum Plasmas, pair plasmas and pair-ion plasmas exist under extreme conditions in planetary interiors and exotic stars. In this workshop plasma physicists, astrophysicists and plasma astrophysicists are brought together to discuss these issues.

The Editor, Prof. S.S. Hasan is the Director of the Indian Institute of Astrophysics.

Autoren/Hrsg.

Krishan, V.

Hasan, S. S.

Gangadhara, R.

Hasan, Siraj

Inhaltsverzeichnis

1;Preface;6
2;Contents;8
3;List of Contributors;11
4;Part I Astrophysical Turbulence;14
4.1;Aspects of Hydrodynamic Turbulence in Classical and Quantum Systems;15
4.2;Observations and Modeling of Turbulence in the Solar Wind;32
4.3;Power Spectra of the Fluctuations in the Solar Wind ;45
5;Part II Astrophysical Dynamos;63
5.1;Alpha Effect in Partially Ionized Plasmas;64
5.2;Constraints on Dynamo Action;78
5.3;Planetary Dynamos;93
6;Part III Pulsar Radiation Mechanism;105
6.1;Pulsars as Fantastic Objects and Probes;106
6.2;Pulsar Radio Emission Geometry;119
6.3;Millisecond Pulsar Emission Altitude from Relativistic Phase Shift: PSR J0437-4715;142
6.4;Magnetosphere Structure and the Annular Gap Model of Pulsars;151
6.5;Wave Modes in the Magnetospheres of Pulsars and Magnetars;173
6.6;Polarization of Coherent Curvature Radiation in Pulsars;181
7;Part IV Quantum Plasmas;192
7.1;Nonlinear Quantum Plasma Physics;193
7.2;Dust Plasma Interactions in Space and Laboratory;215
8;Part V Accretion Disks;232
8.1;Magnetorotational Instability In Accretion Disks ;233
8.2;Hybrid Viscosity and Magnetoviscous Instability in Hot, Collisionless Accretion Disks;249
8.3;Transonic Properties of Accretion Disk Around Compact Objects;260
8.4;Maximum Brightness Temperature for an Incoherent Synchrotron Radio Source;272
8.5;Nonlinear Jeans Instability in an Uniformly Rotating Gas;280
9;Part VI Solar and Space Plasmas;289
9.1;An Overview of the Magnetosphere, Substorms and Geomagnetic Storms;290
9.2;Monte Carlo Simulation of Scattering of Solar Radio Emissions;307
9.3;Evolution of Magnetic Helicity in NOAA 10923 Over Three Consecutive Solar Rotations;325
9.4;Stability of Double Layer in Multi-Ion Plasmas;332