Fundamental Accretion and Ejection Astrophysics

Details Fundamental Accretion and Ejection Astrophysics Fundamental Accretion and Ejection Astrophysics

2009-02-26

arxiv.org/abs/0902.4683v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

Astro 2010 Science White Paper

Scientific paper

Disk accretion may be the fundamental astrophysical process. Stars and planets form through the accretion of gas in a disk. Black holes and galaxies co-evolve through efficient disk accretion onto the central supermassive black hole. Indeed, approximately 20 percent of the ionizing radiation in the universe is supplied by disk accretion onto black holes. And large-scale structures - galaxy clusters - are dramatically affected by the relativistic jets that result from accretion onto black holes. Yet, we are still searching for observational answers to some very basic questions that underlie all aspects of the feedback between black holes and their host galaxies: How do disks transfer angular momentum to deliver gas onto compact objects? How do accretion disks launch winds and jets?

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