Showing 2002 · astro-phShow all
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astro-ph2002
Line Profiles from Different Accretion Engine Geometries
Eric G. Blackman, Sean A. Hartnoll
Line profiles represent an important probe of the geometry and dynamics of the central accretion engines in AGN. Although a flat disk illuminated from above can explain the relativ…
astro-ph2002
On Magnetic Field Amplification in Gamma-Ray Burst Sources
Eric G. Blackman
Magnetic fields play a dual role in gamma-ray bursts (GRBs). First, GRB and afterglow spectra (the latter interpreted as emission from external shocks) imply synchrotron radiation…
astro-ph2002
Recent Developments in Magnetic Dynamo Theory
Eric G. Blackman
Some recent results and open issues in magnetic dynamo theory are addressed. The distinction between small-scale and mean-field dynamo (MFD) action in forced turbulent flows is emp…