6 papers
Turbulent cross-field transport of non-thermal electrons in coronal loops: theory and observations
N. Bian, E. Kontar, A. MacKinnon
A fundamental problem in astrophysics is the interaction between magnetic turbulence and charged particles. It is now possible to use \emph{Ramaty High Energy Solar Spectroscopic I…
Properties of Energetic Ions in the Solar Atmosphere from γ -Ray and Neutron Observations
Nicole Vilmer, Alec L. MacKinnon, Gordon J. Hurford
Gamma-rays and neutrons are the only sources of information on energetic ions present during solar flares and on properties of these ions when they interact in the solar atmosphere…
Thermalisation and hard X-ray bremsstrahlung efficiency of self-interacting solar flare fast electrons
R. K. Galloway, P. Helander, A. L. MacKinnon +1
Most theoretical descriptions of the production of solar flare bremsstrahlung radiation assume the collision of dilute accelerated particles with a cold, dense target plasma, negle…
Inverse Compton X-rays from relativistic flare electrons and positrons
Alec L. MacKinnon, Procheta C. V. Mallik
In solar flares, inverse Compton scattering (ICS) of photospheric photons might give rise to detectable hard X-ray photon fluxes from the corona where ambient densities are too low…
Coronal radiation belts
H. S. Hudson, A. L. MacKinnon, S. F. N. Frewen +1
The magnetic field of the solar corona has a large-scale dipole character, which maps into the bipolar field in the solar wind. Using standard representations of the coronal field,…
Compton backscattered and primary X-rays from solar flares: angle dependent Green's function correction for photospheric albedo
Eduard P. Kontar, Alec L. MacKinnon, Richard A. Schwartz +1
The observed hard X-ray (HXR) flux spectrum from solar flares is a combination of primary bremsstrahlung photons with a spectrally modified component from photosphe…