Talks

    • Self-induced scattering of the electron strahl in the inner heliosphere
      29 October 2019, 2019 Arcetri Workshop on Plasma Astrophysics, Arcetri, Italy
    • A brief introduction to kinetic physics and turbulence in the solar wind
      26 August 2019, China University of Geosciences, Beijing, China
    • The multi-scale behaviour of the solar wind: kinetic physics, collisions, and turbulence
      26 August 2019, National Space Science Center, Chinese Academy of Sciences, Beijing, China
    • Electron-astrophysics – ideas for new space missions
      22 August 2019, Graduate Academic Conference on Turbulence and Magnetic Reconnection, Beijing, China
    • The fluidisation of plasma turbulence – theory and observations
      21 August 2019, Peking University, Beijing, China
    • Kinetic processes, turbulence, and the multi-scale evolution of the solar wind
      05 August 2019, SHINE Workshop, Boulder, CO, USA
    • Multi-scale plasma processes in the solar wind
      03 July 2019, National Astronomy Meeting of the Royal Astronomical Society, Lancaster, UK
    • The Debye mission: measuring electron-scale turbulence in the solar wind
      04 June 2019, Waves Côte d’Azur, Université de Côte d’Azur, Nice, France
    • Debye: electron-astrophysics in the solar wind
      29 May 2019, Solar Wind Electron Workshop, ESAC, Villafranca del Castillo, Spain
    • Measuring electron-scale turbulence with Debye
      11 April 2019, EGU General Assembly, Vienna, Austria
    • Debye: design for an ESA F-Class mission to study electron heating in space and astrophysical plasma
      08 April 2019, EGU General Assembly, Vienna, Austria
    • Large-scale and small-scale turbulence: particles and fields
      29 March 2019, SWA Team Meeting, Florence, Italy
    • Studying large-scale and small-scale solar-wind turbulence with Solar Orbiter: particles and fields
      25 February 2019, ISEE Symposium “Recent progress in heliospheric physics by direct measurements of unexplored space plasmas”, Nagoya University, Nagoya, Japan
    • The multi-scale nature of the solar wind
      14 December 2018, AGU Fall Meeting, Washington, DC, USA
    • The solar wind: a multi-scale astrophysical plasma
      23 November 2018, School of Physics and Astronomy Seminar, Queen Mary University of London, London, UK
    • Is the fast solar wind (almost) always unstable?
      22 October 2018, 2018 Arcetri Workshop on Plasma Astrophysics, Arcetri, Italy
    • The Oblique Whistler-wave Instability Driven by the Electron Strahl
      25 September 2018, SWA Team Meeting, Prague, Czech Republic
    • How unstable is the solar wind?
      26 July 2018, Fluids & Plasmas Seminar, University of Delaware, Newark, DE, USA
    • Science with SWA and ALPS (The Arbitrary Linear Plasma Solver)
      16 May 2018, SWA Team Meeting, Frascati, Italy
    • The Dynamics of Compressive Fluctuations in the Solar Wind: Fluid or Kinetic?
      26 April 2018, 8th Meeting of Isradynamics – “Dynamical Processes in Space Plasmas”, Ein Bokek, Israel
    • The Arbitrary Linear Plasma Solver (ALPS): A New Tool for Kinetic Physics with Solar Orbiter and Parker Solar Probe
      11 April 2018, EGU General Assembly, Vienna, Austria
    • Turbulence-driven Kinetic Instabilities and Their Effects on Particle Scattering in the Solar Wind
      04 April 2018, European Week of Astronomy and Space Science, Liverpool, UK
    • Space plasma physics with ALPS: The Arbitrary Linear Plasma Solver
      27 March 2018, Spring MIST, University of Southampton, Southampton, UK
    • Plasma-Astrophysics: The Connection Between Global Dynamics and Kinetic Plasma Physics
      15 February 2018, Astrophysics Group Seminar, Mullard Space Science Laboratory, University College London, Dorking, UK
    • Cutting-edge Kinetic Physics with Parker Solar Probe and Solar Orbiter: The Arbitrary Linear Plasma Solver (ALPS)
      12 December 2017, AGU Fall Meeting, New Orleans, LA, USA
    • Do we even need kinetic physics to describe the solar wind?
      22 November 2017, Solar System Group Meeting, Mullard Space Science Laboratory, University College London, Dorking, UK
    • Using ALPS with Solar Orbiter to Understand Waves and Instabilities in the Solar Wind
      10 November 2017, RAS Specialist Discussion Meeting “Solar Orbiter: Synergy Between Theory and Observations”, Royal Astronomical Society, London, UK
    • Polarisation Properties of Kinetic and MHD Slow Modes in the Solar Wind
      26 October 2017, 2017 Arcetri Workshop on Plasma Astrophysics, Arcetri, Italy
    • Fluctuations in the Collisionless Solar Wind: MHD or Kinetic?
      19 October 2017, Plasma Seminar, University of Oxford, Oxford, UK
    • The Polarization of Compressive Fluctuations in the Solar Wind: MHD, Kinetic Theory, and In-situ Observations
      24 August 2017, Parker Solar Probe Theory Telecon
    • The Applicability of MHD to Describe a Collisionless Plasma Like the Solar Wind
      16 August 2017, Numerical Techniques in MHD Simulations Workshop, University of Cologne, Cologne, Germany
    • Using WIND to Study Compressive Fluctuations in the Solar Wind
      20 July 2017, WIND SWG Telecon
    • The Fluid-like Behavior of Compressive Fluctuations in the Collisionless Solar Wind
      19 June 2017, IPELS Workshop, San Diego, CA, USA
    • Compressive Turbulence in the Solar Wind – Kinetic vs. Fluid Models
      07 June 2017, Astroplasmas Seminar, Princeton University, Princeton, NJ, USA
    • Fluid and Kinetic Plasma Modes in the Collisionless Solar Wind
      01 May 2017, Space Physics Seminar, University of California at Berkeley, Berkeley, CA, USA
    • How Fluid-like are the Compressive Fluctuations in the Solar Wind
      21 February 2017, Seminar, Imperial College, London, UK
    • Compressive Turbulence and Its Effects on Kinetic Instabilities in the Solar Wind
      14 February 2017, Extra-Seminar, University of Bonn, Bonn, Germany
    • ALPS: The Arbitrary Linear Plasma Solver
      17 December 2016, Wind Team Meeting, Berkeley, CA, USA
    • Collisionless Isotropization of the Solar-Wind Protons by Compressive Fluctuations and Plasma Instabilities
      15 December 2016, AGU Fall Meeting, San Francisco, CA, USA
    • Regulation of the Electron Strahl by Kinetic Instabilities in the Solar Wind
      11 December 2016, FIELDS Science Team Meeting, Berkeley, CA, USA
    • Fluctuating-Moment Effects in the Solar Wind: A Kinetic Response to Compressive Plasma Turbulence
      09 November 2016, Space Science Center Seminar, University of New Hampshire, Durham, NH, USA
    • Fluctuating-Moment Effects due to Compressive Plasma Turbulence in the Solar Wind
      12 September 2016, Imperial College, London, UK
    • Compressive Fluctuations and their Effects on Particle Kinetics in the Solar Wind
      05 September 2016, Mullard Space Science Laboratory, University College London, Dorking, UK
    • Isotropization of the Solar Wind through Plasma Instabilities Induced by Compressive Fluctuations
      07 April 2016, 15th Annual International Astrophysics Conference, Cape Coral, FL, USA
    • Electron-Driven Instabilities and their Implications for Turbulence in the Solar Wind
      06 July 2015, SHINE Workshop, Stowe, VT, USA
    • Alpha-Particle/Proton Differential Flow in the Solar Wind: Implications for Plasma Heating, Azimuthal Flow, and the Parker Spiral Magnetic Field
      17 December 2014, AGU Fall Meeting, San Francisco, CA, USA
    • Alpha-Particle Energetics in the Solar Wind: Instabilities, the Rotational Force, and Particle Heating
      14 December 2014, FIELDS Science Team Meeting, Berkeley, CA, USA
    • Deceleration of Alpha Particles in the Solar Wind by Instabilities and the Rotational Force
      29 October 2014, Space Science Center Seminar, University of New Hampshire, Durham, NH, USA
    • Dissipation of Plasma Turbulence by Stochastic Heating
      23 June 2014, SHINE Workshop, Telluride, CO, USA
    • Alpha Particles in the Solar Wind: Instabilities Driven by Beams and Temperature Anisotropies
      13 June 2014, Institute for Geophysics and Meteorology, University of Cologne, Germany
    • Resonant Instabilities Driven by Anisotropic Alpha-Particle Beams in Collisionless Plasmas
      13 March 2014, 13th Annual International Astrophysics Conference, Myrtle Beach, SC, USA
    • Kinetic Instabilities Driven by Alpha Particles and Their Contribution to Solar-Wind Heating
      10 December 2013, SWEAP Science Team Meeting, Berkeley, CA, USA
    • Stochastic Heating at Beta of Order Unity
      08 December 2013, HTP Team Meeting, Berkeley, CA, USA
    • Kinetic Instabilities Driven by Anisotropic Ion and Electron Beams in the Solar Wind
      29 October 2013, SPRG Seminar, University of California at Berkeley, Berkeley, CA, USA
    • Preferential Ion Heating by Waves and Turbulence in the Solar Wind
      25 June 2013, SHINE Workshop, Buford, GA, USA
    • Cascade on Kinetic Scales in Two-Dimensional Hybrid Simulations
      05 June 2013, Meeting on Solar Wind Turbulence, Kennebunkport, ME, USA
    • Wave Generation by Alpha-Particle Driven Instabilities in the Solar Wind
      16 April 2013, Institut für Weltraumforschung, Österreichische Akademie der Wissenschaften, Graz, Austria
    • Beam Instabilities Driven by Alpha Particles with Temperature Anisotropies in the Fast Solar Wind
      27 March 2013, First Solar Probe Plus Workshop, Pasadena, CA, USA
    • Kinetic Instabilities Driven by Alpha Particles in the Solar Wind
      14 March 2013, The 42nd UK Fusion Theory Seminar, Culham, UK
    • Resonant Instabilities and Scattering of the Electron Strahl
      04 December 2012, HTP Team Meeting, Berkeley, CA, USA
    • A parallel-propagating Alfvénic ion-beam instability in magnetized high-beta space plasmas
      04 December 2012, HTP Team Meeting, Berkeley, CA, USA
    • On the generation of oblique high-frequency waves by ion beams in the solar wind
      19 September 2012, Workshop “Turbulent cascade in the solar wind: anisotropy and dissipation”, Paris, France
    • The anisotropic cascade of solar wind turbulence beyond MHD scales in two-dimensional hybrid simulations
      01 February 2012, 511. WE-Heraeus-Seminar “From the Heliosphere into the Sun — Sailing against the Wind”, Bad Honnef, Germany
    • Über konvektierte Wellenstrukturen und spektralen Transfer in Weltraumplasmen — Anwendungen auf Sonnenkorona und Sonnenwind
      11 January 2012, Disputation, TU Braunschweig, Germany
    • Hybrid simulations of the two-dimensional cascade of weak solar wind turbulence beyond MHD scales
      09 December 2011, AGU Fall Meeting, San Francisco, CA, USA
    • Parametrischer Zerfall und kinetische Kaskade — spektraler Transfer in Weltraumplasmen
      27 October 2011, Oberseminar Theoretische Physik, TU Braunschweig
    • Parametric decay and kinetic cascade — spectral transfer in space plasmas
      26 October 2011, Solar System Seminar, MPS Lindau, Germany
    • Compressive wave structures on kinetic scales resulting from a two-dimensional turbulent cascade in the solar wind
      16. September 2011, Workshop “Cosmic Rays and the Heliospheric Plasma Environment”, Bochum, Germany
    • Apparent temperature anisotropies due to wave activity in the solar wind
      19. April 2011, 478. WE-Heraeus-Seminar “Fusion and Astrophysical Plasmas”, Bad Honnef, Germany
    • Schwach kompressive, hochfrequente Wellen im inhomogenen Multifluid-Plasma
      22. February 2011, DGG-Jahrestagung, Köln, Germany
    • Compressive high-frequency waves riding on an Alfvén-cyclotron wave in a multi-fluid plasma
      26. January 2011, Oberseminar Theoretische Physik, TU Braunschweig, Germany
    • Compressive high-frequency waves riding on an Alfvén-cyclotron wave in a multi-fluid plasma
      15. December 2010, Solar System Seminar, MPS Lindau, Germany
    • Mikroturbulenz und Energiekaskade in Weltraumplasmen — Multifluid- und kinetische Betrachtungen
      03. June 2010, Oberseminar Theoretische Physik, TU Braunschweig, Germany
    • Kinetics of non-Maxwellian distribution functions in the turbulent solar wind
      23. March 2010, Workshop “New perspectives on cosmic rays in the heliosphere”, Parys, South Africa
    • Kinetik nicht-maxwellscher Verteilungsfunktionen des turbulenten Sonnenwindplasmas
      16. March 2010, DPG-Frühjahrstagung, Bonn, Germany
    • Kinetics of solar wind turbulence — feedback on the proton distribution function
      27. January 2010, Solar System Seminar, MPS Lindau, Germany
    • Kinetik der Abbremsung und Dissipation des Sonnenwindplasmas am heliosphärischen Schock
      02. April 2009, DPG-Frühjahrstagung, Greifswald, Germany
    • IBEX: Theoretische Grundlagen
      20. January 2009, Extra-Seminar bei Hans Fahr, AIfA Bonn, Germany
    • Solar wind proton reflection and induced injection to the ACR regime at the quasi-parallel termination shock
      11. November 2008, 2nd International Heliophysical Year Conference, ISSI Bern, Switzerland
    • Ionen-Injektion in den Fermi-1-Prozeß
      06. May 2008, Extra-Seminar bei Hans Fahr, AIfA Bonn, Germany
    • Kinetische Betrachtung des parallelen magnetohydrodynamischen Schocks
      05. March 2008, DPG-Frühjahrstagung, Freiburg, Germany
    • Das Feldlinienkonzept: Sinn oder Unsinn
      10. July 2007, Extra-Seminar bei Hans Fahr, AIfA Bonn, Germany
    • Beziehungen des Mondes zur Erde
      im “Bonner Sternenhimmel”, Bonn, Germany
    • Temperaturmessung
      16. June 2006, Meteorologisches Instrumentenpraktikum, Universität Bonn, Germany
    • Das Nilssonmodell
      11. January 2006, Seminar “Kernmodelle und ihre experimentelle Überprüfung”, Universität Bonn, Germany
    • Microquasars as counterparts of unidentified EGRET sources
      Astrophysikalisches Seminar, Universität Bonn, Germany