Slow-Drift Solar Radio Bursts: Harmonic Frequency Ratios, Frequency Drift Rates, and Solar Longitude Variation.

Alfv En Wave Solitons and Solar Intermediate Drift Bursts

We investigate stationary solutions for Alfv en solitons propagating obliquely in a homogeneous magnetic eld. Due to their dispersive nature kinetic Alfv en waves can evolve into soliton like structures which propagate at velocities of the order of the Alfv en velocity in a direction inclined to the magnetic eld. In the rst model we keep the plasma < m e =m i. Kinetic Alfv en solitons in this c...

Solar Radio Bursts and Space Weather

Space Weather is the study of the conditions in the solar wind that can affect life on the surface of the Earth, particularly the increasingly technologically sophisticated devices that are part of modern life. Solar radio observations are relevant to such phenomena because they generally originate as events in the solar atmosphere, including flares, coronal mass ejections and shocks, that prod...

Stopping Frequency of Type III Solar Radio Bursts in Expanding Magnetic Flux Tubes

Aims. Understanding the properties of type III radio bursts in the solar corona and interplanetary space is one of the best ways to remotely deduce the characteristics of solar accelerated electron beams and the solar wind plasma. One feature of all type III bursts is the lowest frequency they reach (or stopping frequency). This feature reflects the distance from the Sun that an electron beam c...

Random genetic drift and gamete frequency.

An analytic expression of conditional expectation of transient gamete frequency, given that one of the two loci remains polymorphic, is obtained in terms of the diffusion process by calculating the moments of the distribution. Using this expression, a model where linkage disequilibrium is introduced by a single mutation is considered. The conditional expectation of the gamete frequency given th...

Astro2010: Solar and Heliospheric Physics with Low Frequency Radio Arrays