Run directories related to some past research projects

Isotropic homogeneous MHD turbulence

  • Hydrodynamic and hydromagnetic energy spectra from large eddy simulations
  • Inverse transfer in non-helical MHD
  • Classes of hydrodynamic and MHD decay (Brandenburg & Kahniashvili 2017)
  • The turbulent chiral - magnetic cascade in the early universe
  • Dynamo effect in decaying helical turbulence
  • Magnetic helicity dissipation in an ideal MHD code
  • Scaling of the Hosking integral in decaying magnetically-dominated turbulence (Zhou, Brandenburg, Sharma 2022)
  • The role of magnetic helicity when it is absent on average (Brandenburg & Larsson 2023)
  • Inverse cascading for initial MHD turbulence spectra between Saffman and Batchelor (Brandenburg, Sharma, Vachaspati 2023)
  • Resistivity-controlled nonhelical magnetic turbulence decay (Brandenburg, Neronov, Vazza 2024)
  • Batchelor, Saffman, and Kazantsev spectra in galactic small-scale dynamos (Brandenburg, Zhou, Sharma 2023)
  • Dissipative magnetic structures and scales in small-scale dynamos (Brandenburg, Rogachevskii, Schober 2023)
  • Hosking integral in nonhelical Hall cascade
  • Decay law of magnetic turbulence with helicity balanced by chiral fermions (Brandenburg, Kamada, Schober 2023)
  • Chiral Magnetohydrodynamics with Zero Total Chirality
  • Turbulent magnetic decay controlled by two conserved quantities

    Relic Gravitational waves

  • Numerical simulations of gravitational waves from early-universe turbulence
  • Circular polarization of gravitational waves from early-universe helical turbulence
  • Gravitational waves from the chiral magnetic effect
  • Relic Gravitational Waves from the Chiral Plasma Instability in the Standard Cosmological Model (Brandenburg, Clarke, Kahniashvili, Long, & Sun)
  • Can we observe the QCD phase transition-generated gravitational waves through pulsar timing arrays?
  • Spectrum of turbulence-sourced gravitational waves as a constraint on graviton mass
  • Simulating relic gravitational waves from inflationary magnetogenesis
  • Simulations of helical inflationary magnetogenesis and gravitational waves
  • Leading-order nonlinear gravitational waves from reheating magnetogeneses
  • Big bang nucleosynthesis limits and relic gravitational waves detection prospects
  • Low frequency tail of gravitational wave spectra from hydromagnetic turbulence
  • Modified propagatino of gravitational waves from the early radiation era
  • Steepness of the gravitational wave spectrum from phase transitions
  • Shallow relic gravitational wave spectrum with acoustic peak (Sharma, Dahl, Brandenburg, & Hindmarsh 2023)

    • Galaxy & interstellar medium: cooling instability, potential turbulence

  • Hemispheric handedness in the Galactic synchrotron polarization foreground (Brandenburg & Brüggen 2020)
  • Application of a helicity proxy to edge-on galaxies
  • Random expansion waves
  • Spectral characterisation of inertial particle clustering in turbulence
  • Supersonic turbulence
  • Thermal instability
  • Dynamo effect in unstirred self-gravitating turbulence
  • Galactic Dynamos

    Convection, ionization, radiation, & mixing

  • Cartesian convection with Kramers opacicty
  • 1-D simulations with hydrogen ionization
  • The time step constraint in radiation hydrodynamics
  • Turbulent front speed in the Fisher equation: dependence on Damköhler number
  • Turbulent radiative diffusion and turbulent Newtonian cooling
  • Ambipolar diffusion in large Prandtl number turbulence (Brandenbug 2019)

    Two-scale method of measuring magnetic helicity

  • Large-scale helicity spectra
  • Working directory for helicityastroplas

    Coagulation

  • Coagulation & condensation in turbulent flows
  • Effect of turbulence on collisional growth of cloud droplets
  • Cloud droplet growth due to supersaturation fluctuations in stratiform clouds
  • Collision fluctuations of lucky droplets with superdroplets

    Dynamos

  • Test-field method for computing dynamo coefficients
  • Magnetic quenching of alpha and diffusivity tensors in helical turbulence
  • Fully compressible test-field method and its application to shear dynamos
  • Modeling spatio-temporal nonlocality in mean-field dynamos
  • A mean field dynamo from negative eddy diffusivity
  • Strong nonlocality variations in a spherical mean-field dynamo
  • Magnetic helicity and fluxes in an inhomogeneous α dynamo
  • The effect of a dynamo-generated field on the Parker wind
  • Optimal Dynamos (Brandenburg & Chen 2020)
  • Kinetic Dynamo (Pusztai, Juno, Brandenburg, et al. 2020)
  • Cross-helicity effect on alpha-type dynamo in non-equilibrium turbulence (Mizerski, Yokoi, Brandenburg 2023)
  • Magnetic helicity fluxes in dynamos from rotating inhomogeneous turbulence (Brandenburg & Vishniac 2024)

    Miscellanea

  • Magnetohydrodynamics predicts heavy-tailed distributions of axion-photon conversion (Carenza, Sharma, Marsh, et al. 2023)
  • Backreaction of axion-SU(2) dynamics during inflation (Iarygina, Sfakianakis, Sharma, & Brandenburg 2023)
  • Magnetogenesis from axion-SU(2) inflation
  • Lattice simulations of axion-U(1) inflation: gravitational waves, magnetic fields, and black holes (Sharma et al. 2024)
  • Spreading layer on neutron stars
  • Hall cascade with fractional magnetic helicity in neutron star crusts
  • Confronting the neutron star population with inverse cascades
  • Negative effective magnetic pressure instability
  • Surface flux concentrations in a spherical α2 dynamo
  • Detonation
  • Electromagnetic Conversion into Kinetic and Thermal Energies (Brandenburg & Protiti 2023)
  • Relaxation of writhe and twist of a bi-helical magnetic field (Yousef & Brandenburg 2003)

    Other data

  • Spectral magnetic helicity of solar active regions between 2006 and 2017
  • Piecewise quadratic growth during the 2019 novel coronavirus epidemic
  • Quadratic growth during the COVID-19 pandemic: merging hotspots and reinfections

    Axel Brandenburg
    $Date: 2024/10/09 05:56:20 $, $Author: brandenb $, $Revision: 1.85 $