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Researcher identifiers

Number of documents

38

Raphaël Raynaud


Postdoctoral Associate

CEA Saclay
Astrophysics Division
Orme des Merisiers, Bât. 709
91191 Gif-sur-Yvette
France
 
Email: firstname.lastname_AT_cea.fr
 

Research Interests

I am primarily interested in astrophysical fluid dynamics and nonlinear phenomena, with particular focus on thermal convection and magnetohydrodynamics (MHD). This branch of fluid dynamics describes the interaction of magnetic fields with electrically conducting fluid and is particularly important in explaining the magnetic properties of planets and stars, like the Earth or the Sun.

Publications


Journal articles8 documents

  • Raphaël Raynaud, Jérôme Guilet, Hans-Thomas Janka, Thomas Gastine. Magnetar formation through a convective dynamo in protoneutron stars. Science Advances , American Association for the Advancement of Science (AAAS), 2020, 6 (eaay2732), ⟨10.1126/sciadv.aay2732⟩. ⟨hal-02428428⟩
  • Raphaël Raynaud, Michel Rieutord, Ludovic Petitdemange, Thomas Gastine, Bertrand Putigny. Gravity darkening in late-type stars. I. The Coriolis effect. Astronomy and Astrophysics - A&A, EDP Sciences, 2018, 609 (A124), ⟨10.1051/0004-6361/201731729⟩. ⟨hal-01706693⟩
  • Raphaël Raynaud, Steven Tobias. Convective dynamo action in a spherical shell: symmetries and modulation. Journal of Fluid Mechanics, Cambridge University Press (CUP), 2016, 799 (R6), ⟨10.1017/jfm.2016.407⟩. ⟨hal-01342498⟩
  • Alexandre Cameron, Raphaël Raynaud, Emmanuel Dormy. Multi-stage high order semi-Lagrangian schemes for incompressible flows in Cartesian geometries. International Journal for Numerical Methods in Fluids, Wiley, 2016, ⟨10.1002/fld.4245⟩. ⟨hal-01335662⟩
  • Raphaël Raynaud, Ludovic Petitdemange, Emmanuel Dormy. Dipolar dynamos in stratified systems. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2015, 448, pp.2055-2065. ⟨10.1093/mnras/stv122⟩. ⟨hal-01122919⟩
  • Raphaël Raynaud, Ludovic Petitdemange, Emmanuel Dormy. Influence of the mass distribution on the magnetic field topology. Astronomy and Astrophysics - A&A, EDP Sciences, 2014, 567 (A107), ⟨10.1051/0004-6361/201423902⟩. ⟨hal-01122419⟩
  • Martin Schrinner, Ludovic Petitdemange, Raphaël Raynaud, Emmanuel Dormy. Topology and field strength in spherical, anelastic dynamo simulations. Astronomy and Astrophysics - A&A, EDP Sciences, 2014, 564 (A78), ⟨10.1051/0004-6361/201322801⟩. ⟨hal-01122251⟩
  • Raphaël Raynaud, Emmanuel Dormy. Intermittency in spherical Couette dynamos. Physical Review Online Archive (PROLA), American Physical Society, 2013, 87 (033011), ⟨10.1103/PhysRevE.87.033011⟩. ⟨hal-01121376⟩

Directions of work or proceedings5 documents

  • Ludovic Petitdemange, Raphaël Raynaud. Dipole collapse in rotating stratified dynamos. Astro Fluid: An International Conference in Memory of Professor Jean-Paul Zahn's Great Scientific Achievements, Jun 2016, Paris, 2019, ⟨10.1051/eas/1982031⟩. ⟨hal-02426720⟩
  • Raphaël Raynaud, Michel Rieutord, Ludovic Petitdemange, T. Gastine, Bertrand Putigny. Gravity darkening in late-type stars. Journées de la SF2A, Jul 2018, Bordeaux, France. 2018. ⟨hal-02426744⟩
  • Raphaël Raynaud, Steven Tobias. Supermodulation of the solar cycle. Journées de la SF2A, Jul 2018, Bordeaux, France. 2018. ⟨hal-02426733⟩
  • Raphaël Raynaud. Dynamos stellaires : symétries et modulations. Rencontre du Non Linéaire, Mar 2015, Paris, France. 2015. ⟨hal-02429342⟩
  • Raphaël Raynaud, Ludovic Petitdemange, Emmanuel Dormy. Influence of the mass distribution on the magnetic field topology in spherical, anelastic dynamo simulations. Journées de la SF2A, Jun 2014, Paris, France. 2014. ⟨hal-01126612⟩

Conference papers19 documents

  • Raphaël Raynaud, Jérôme Guilet, Hans-Thomas Janka, Thomas Gastine. Magnetar formation through convective dynamos in protoneutron stars. Journées de la SF2A 2019, Société Francaise d’Astronomie et d’Astrophysique, May 2019, Nice, France. ⟨hal-02429004⟩
  • Raphaël Raynaud, Jérôme Guilet, Hans-Thomas Janka, Thomas Gastine. Convective dynamos in protoneutron stars. Dynamo action from the lab to the stars, PLAS@PAR Thematic Days, Sep 2019, Paris, France. ⟨hal-02428892⟩
  • Raphaël Raynaud, Jérôme Guilet, Hans-Thomas Janka, Thomas Gastine. Magnetar formation through convective dynamos in protoneutron stars. Multi-Messenger Astrophysics in the Gravitational Wave Era, Yukawa Institute for Theoretical Physics, Sep 2019, Kyoto, Japan. ⟨hal-02428460⟩
  • Raphaël Raynaud, Jérôme Guilet, Hans-Thomas Janka, Thomas Gastine. Magnetar formation through convective dynamos in protoneutron stars. XIXth Workshop on Nuclear Astrophysics, Mar 2019, Tegernsee, Germany. ⟨hal-02428462⟩
  • Raphaël Raynaud. Convection and dynamo modeling in protoneutron stars. Bursting the Bubble: Connecting Thermonuclear Burst Research to a Wider Community, Lorentz Center, Jun 2019, Leiden, Netherlands. ⟨hal-02428461⟩
  • Raphaël Raynaud, Jérôme Guilet. Protoneutron star dynamos. Gamma-ray bursts and supernovae: from the central engines to the observer, PSI2 thematic program, Jun 2019, Orsay, France. ⟨hal-02428463⟩
  • Alexis Reboul-Salze, Jérôme Guilet, Raphaël Raynaud, Matteo Bugli. A global model of the magnetorotational instability in proto-neutron stars. Journées de la SF2A, Société Francaise d’Astronomie et d’Astrophysique, May 2019, Nice, France. ⟨hal-02428439⟩
  • Raphaël Raynaud, Jérôme Guilet, Hans-Thomas Janka, Thomas Gastine. Convective dynamos in protoneutron stars. Magnetic field formation and evolution in neutron stars, PHAROS WG4+WG5 meeting and CoCoNuT Meeting, Nov 2018, Saclay, France. ⟨hal-02429015⟩
  • Raphaël Raynaud. The pseudo-spectral code MagIC. Multi-Dimensional processes in stellar physics, École Évry Schatzman du PNPS, Oct 2018, Roscoff, France. ⟨hal-02429116⟩
  • Raphaël Raynaud, Michel Rieutord, Ludovic Petitdemange, Thomas Gastine, Bertrand Putigny. Gravity darkening in late-type stars. 7th BCool meeting, Apr 2018, Dublin, Ireland. ⟨hal-02428464⟩
  • Raphaël Raynaud. Dynamo theory. 10th National Meeting on Astronomy and Astrophysics, Iranian Astronomical Society, Jan 2017, Zahedan, Iran. ⟨hal-02429164⟩
  • Raphaël Raynaud, Michel Rieutord, Ludovic Petitdemange, Thomas Gastine, Bertrand Putigny. Latitudinal flux variations of thermal anelastic convection in a rotating spherical shell. Compressible Convection Conference, Sep 2017, Lyon, France. ⟨hal-02428465⟩
  • Raphaël Raynaud, Steven Tobias. New insights into the modulation of the Sun activity. 19th Meeting on Research in Astronomy, Institute for Advanced Studies in Basic Sciences (IASBS), May 2016, Zanjan, Iran. ⟨hal-02429142⟩
  • Raphaël Raynaud, Steven Tobias. Convective dynamos: symmetries and modulation. European GdR Dynamo, Jun 2016, Barcelone, Spain. ⟨hal-02429262⟩
  • Raphaël Raynaud, Steven Tobias. Convective dynamos: symmetries and modulation. Advances in Geophysical and Astrophysical Turbulence, Jul 2016, Cargèse, France. ⟨hal-02428466⟩
  • Raphaël Raynaud, Ludovic Petitdemange, Emmanuel Dormy. Dipolar dynamos in stratified systems. Stellar and planetary dynamos, May 2015, Goettingen, Germany. ⟨hal-02428467⟩
  • Raphaël Raynaud, Ludovic Petitdemange, Emmanuel Dormy. Influence of the mass distribution on the magnetic field topology. UK MHD Meeting, May 2014, Exeter, United Kingdom. ⟨hal-02429303⟩
  • Raphaël Raynaud, Ludovic Petitdemange, Emmanuel Dormy. Influence of the mass distribution on the magnetic field topology. European GdR Dynamo, Sep 2014, Cambridge, United Kingdom. ⟨hal-02428474⟩
  • Raphaël Raynaud. The convective approximations. Differential Rotation and Magnetism across the HR Diagram, Nordita Scientific Program, Apr 2013, Stockholm, Sweden. ⟨hal-02428468⟩

Theses1 document

  • Raphaël Raynaud. Modélisation numérique du magnétisme solaire et stellaire. Physique [physics]. Observatoire de Paris, 2015. Français. ⟨tel-01196516⟩

Poster communications5 documents

  • Raphaël Raynaud, Jérôme Guilet. Magnetars. GDRI Dynamo Meeting, Nov 2017, Paris, France. ⟨hal-01856043⟩
  • Raphaël Raynaud, Martin Schrinner, Ludovic Petitdemange, Emmanuel Dormy. Topology and field strength in spherical, anelastic dynamo simulations. AGU Fall Meeting, Dec 2014, San Francisco, United States. ⟨hal-02428473⟩
  • Raphaël Raynaud. Spherical, anelastic dynamo simulations. Magnetic fields from the Sun to black holes - In memory of Jean Heyvaerts, Nov 2014, Paris, France. ⟨hal-02429508⟩
  • Raphaël Raynaud, Ludovic Petitdemange, Emmanuel Dormy. The convective approximations. European GdR Dynamo, Jul 2013, Ascona, Switzerland. ⟨hal-02428472⟩
  • Raphaël Raynaud, Stephan Fauve, Emmanuel Dormy. On-off intermittency in spherical Couette flow. European GDR Dynamo, Oct 2012, Nice, France. ⟨hal-02428471⟩