Protostellar Disk Formation and Early Evolution

Details Protostellar Disk Formation and Early Evolution Protostellar Disk Formation and Early Evolution

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ssrv...92...23a&link_type=abstract

Space Science Reviews, v. 92, Issue 1/2, p. 23-38 (2000).

Physics

2

Self Gravitating Disks, Spiral Modes, Nonlinear Interactions

Scientific paper

This contribution describes the formation of circumstellar disks and their earliest evolutionary phases when self-gravity in the disk plays a crucial role in eliciting the transport of mass and angular momentum. We first discuss the formation of protostellar disks within the context of analytic infall-collapse solutions. We then discuss our efforts to understand the behavior of the newly formed disks. Our specific approach consists of performing a detailed analysis of a simplified model disk which is susceptible to the growth of a spiral instability. Using a combination of numerical simulation and semi-analytic analysis, we show how the dramatic early phase of mass and angular momentum transport in the disk can be explained by a second-order nonlinear process involving self-interaction of a dominant two-armed spiral mode.

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