Introduction to magnetic helicity

MA Berger - Plasma Physics and Controlled Fusion, 1999 - iopscience.iop.org
Introduction to magnetic helicity Page 1 Plasma Physics and Controlled Fusion Introduction to
magnetic helicity To cite this article: Mitchell A Berger 1999 Plasma Phys. Control. Fusion 41 …

[HTML][HTML] Recent progress on understanding coronal mass ejection/flare onset by a NASA living with a star focused science team

MG Linton, SK Antiochos, G Barnes, Y Fan, Y Liu… - Advances in Space …, 2023 - Elsevier
We present a report of recent progress on the topic of understanding solar coronal mass
ejection (CME) onset from both modeling and observational viewpoints, as carried out from …

Astrophysical gyrokinetics: kinetic and fluid turbulent cascades in magnetized weakly collisional plasmas

AA Schekochihin, SC Cowley, W Dorland… - The Astrophysical …, 2009 - iopscience.iop.org
This paper presents a theoretical framework for understanding plasma turbulence in
astrophysical plasmas. It is motivated by observations of electromagnetic and density …

An unsplit Godunov method for ideal MHD via constrained transport in three dimensions

TA Gardiner, JM Stone - Journal of Computational Physics, 2008 - Elsevier
We present a single step, second-order accurate Godunov scheme for ideal MHD which is
an extension of the method described in [TA Gardiner, JM Stone, An unsplit godunov …

Magnetic energy and helicity in two emerging active regions in the Sun

Y Liu, PW Schuck - The Astrophysical Journal, 2012 - iopscience.iop.org
The magnetic energy and relative magnetic helicity in two emerging solar active regions, AR
11072 and AR 11158, are studied. They are computed by integrating over time the energy …

Tracking magnetic footpoints with the magnetic induction equation

PW Schuck - The Astrophysical Journal, 2006 - iopscience.iop.org
The accurate estimation of magnetic footpoint velocities from a temporal sequence of
photospheric magnetograms is critical for estimating the magnetic energy and helicity fluxes …

On the inverse cascade of magnetic helicity

A Alexakis, PD Mininni, A Pouquet - The Astrophysical Journal, 2006 - iopscience.iop.org
We study the inverse cascade of magnetic helicity in conducting fluids, as pertinent to the
generation and dynamics of magnetic fields as observed, eg, in the solar corona, by …

A flux rope network and particle acceleration in three-dimensional relativistic magnetic reconnection

D Kagan, M Milosavljević… - The Astrophysical …, 2013 - iopscience.iop.org
We investigate magnetic reconnection and particle acceleration in relativistic pair plasmas
with three-dimensional particle-in-cell simulations of a kinetic-scale current sheet in a …

Dynamo effect in unstirred self-gravitating turbulence

A Brandenburg, E Ntormousi - Monthly Notices of the Royal …, 2022 - academic.oup.com
In many astrophysical environments, self-gravity can generate kinetic energy, which, in
principle, is available for driving dynamo action. Using direct numerical simulations, we …

Scale dependence of magnetic helicity in the solar wind

A Brandenburg, K Subramanian, A Balogh… - The Astrophysical …, 2011 - iopscience.iop.org
We determine the magnetic helicity, along with the magnetic energy, at high latitudes using
data from the Ulysses mission. The data set spans the time period from 1993 to 1996. The …