324 citations · 2k across the 27 of their papers we have counts for
27 papers
Axions and Cosmic Magnetic Fields
George B. Field, Sean M. Carroll
We argue that if axions are the dark matter, their coupling to electromagnetism results in exponential growth of a helical magnetic field when the axion field first rolls down its…
A Turbulent-Entropic Instability and the Fragmentation of Star-Forming Clouds
Eric Keto, George B. Field, Eric G. Blackman
The kinetic energy of supersonic turbulence within interstellar clouds is subject to cooling by dissipation in shocks and subsequent line radiation. The clouds are therefore suscep…
Does External Pressure Explain Recent Results for Molecular Clouds?
George Field, Eric Blackman, Eric Keto
The recent paper by Heyer et al (2009) indicates that observations of size, linewidth and column density of interstellar clouds do not agree with simple virial equilibrium (VE) as…
Dynamics of Molecular Clouds
George Field, Eric Blackman, Eric Keto
We further develop the model of molecular cloud fragmentation introduced in Field, Blackman and Keto (2007; FBK). We show that external pressure acting on fragments establishes a s…
Dimensionless Measures of Turbulent Magnetohydrodynamic Dissipation Rates
Eric G. Blackman, George B. Field
The magnetic Reynolds number R_M, is defined as the product of a characteristic scale and associated flow speed divided by the microphysical magnetic diffusivity. For laminar flows…
A Model of Cloud Fragmentation
George B. Field, Eric G. Blackman, Eric Keto
We present a model in which the supersonic motions observed in molecular clouds are driven by gravitational energy released as large structures fragment into smaller ones. The frag…