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Tomography of Accretion Flows in Binary Stars and Active Galactic NucleiUnder this project, a variety of accretion problems have been studied, with two in particular. In the first, astrophysical jets are observed in many objects ranging from young stars to Active Galactic Nuclei. A major unsolved problem is how do these jets originate from accretion disks. In a series of works, I have examined the launching of outflows from magnetized disks, the extraction of energy from black holes, and the formation of jets in systems like Cataclysmic Variables and supermassive accreting black holes. The results of these works were published in a number of papers. In the second, I examined the potential role of vortices in accretion disks around Young Stellar Objects, for the formation of planets and for angular momentum transport. I showed that vortices are surprisingly stable, and that they are able to concentrate dust in their cores. I also examined the development of spiral shocks in disks. Finally, I studied the evolution of magnetically layered protoplanetary disks, and showed that they exhibit outbursts which could 'pump' the jets that are observed in Herbig-Haro objects. The results of these works were published in a number of papers as well. Additional information on the published papers is contained in the original abstract.
Document ID
20010094784
Acquisition Source
Goddard Space Flight Center
Document Type
Contractor or Grantee Report
Authors
Livio, Mario
(Space Telescope Science Inst. Baltimore, MD United States)
Date Acquired
August 20, 2013
Publication Date
June 19, 2001
Subject Category
Astrophysics
Funding Number(s)
CONTRACT_GRANT: NAG5-6857
PROJECT: STScI Proj. J0102
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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