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- Testing general relativity with the Galactic central black hole, seminar at Laboratoire d'Annecy de Physique des Particules (Annecy, France, 16 March 2018)
- Observing black holes: a new astrophysics, presentation at Les trous noirs : leur nature, et leur rôle en physique et en astrophysique (Académie des Sciences, Paris, France, 13 February 2018) [video]
- Symbolic tensor calculus on manifolds, lectures at Journées Nationales de Calcul Formel 2018 (Centre International de Rencontres Mathématiques, Luminy, Marseille, France, 22-26 January 2018) [video 1] [video 2] [supplementary material]
- Testing gravitation theories with the Event Horizon Telescope and GRAVITY, invited talk at
La Gravitation, journée de la Division
*Champs et Particules*de la Société Française de Physique (APC, Paris, France, 22 November 2017) - Causality and singularities in relativistic spacetime, seminar in the framework of the inter-university program Histoire et Philosophie des Sciences (HiPhiS) (Montpellier, France, 14 November 2017)
- Testing the Kerr black hole hypothesis with observations of Sgr A*, invited talk at Modern Aspects of Gravity and Cosmology (Orsay, France, 8 November 2017)
- The black hole no-hair theorem, invited talk at IPTA 2017 (Sèvres, France, 5 July 2017)
- The Galactic central black hole and the no-hair theorem, lecture at IPTA 2017 Student Workshop (Sèvres, France, 29 June 2017)
- Black holes, a centenary after the birth of general relativity, seminar at Steklov Mathematical Institute (Moscow, Russia, 22 May 2017)
- A history of black holes, from a physicist perspective, seminar at Institut des Hautes Études de Belgique (Brussels, Belgium, 26 April 2017)
- A new observational era for black holes, seminar at Observatoire Midi-Pyrénées (Toulouse, France, 14 March 2017) [video]
- Differential geometry with SageMath, invited talk at the workshop Geometry and Computer Science (Pescara, Italy, 8 February 2017)
- Testing general relativity via observations of black hole surroundings, invited talk at CoCoNuT Meeting 2016 (Valencia, Spain, 16 December 2016)
- 100 years of black hole physics, leçon inaugurale de la Chaire Georges Lemaître (CP3, Louvain-la-Neuve, Belgium, 28 November 2016)
- General relativity computations with SageManifolds, lecture at NewCompStar School 2016 - "Neutron stars: gravitational physics theory and observations" (Coimbra, Portugal, 6 September 2016)
- Black holes, at the dawn of a new observational era, séminaire général de l'UFR de Physique de l'Université Paris Diderot (Paris, 3 June 2016)
- Black holes, a centenary after the birth of general relativity, Solvay colloquium at International Solvay Institutes (Université Libre de Bruxelles, Belgium, 15 March 2016)
- Black holes in the centenary year of general relativity, seminar at Institut d'Astrophysique de Paris (Paris, 27 November 2015) [video]
- Exploring black hole spacetimes with SageManifolds, invited talk at the workshop One Hundred Years of Strong Gravity (Instituto Superior Técnico, Lisbon, Portugal, 10-12 June 2015)
- Tensor calculus with SageManifolds, seminar at GReCO, Institut d'Astrophysique de Paris (Paris, 18 May 2015)
- The SageManifolds project: differential geometry with a computer, seminar at Institut de Recherche Mathématique de Rennes (Université Rennes I, France, 13 May 2015)
- The SageManifolds project: differential geometry with a computer, seminar at Laboratoire de Mathématiques de Bretagne Atlantique (Université de Bretagne Occidentale, Brest, France, 10 April 2015)
- SageManifolds, talk at Sage Days 64 (University of California, Davis, USA, 17-20 March 2015)
- Black holes and tests of gravitation, présentation dans le cadre du cours de Frédéric Daigne
*Trous noirs, étoiles à neutrons et phénomènes associés*à l'École Polytechnique (Palaiseau, France, 27 January 2015) - Exploring black hole spacetimes with computers, invited talk at 94e rencontre entre mathématiciens et physiciens théoriciens : Riemann, Einstein et la geométrie (Institut de Recherche Mathématique Avancée, Strasbourg, France, 18-20 September 2014)
- Tensor calculus with free softwares: the SageManifolds project, invited talk at Spanish Relativity Meeting 2014 (Valencia, Spain, 1-5 September 2014) [video]
- Black holes and tests of gravitation, invited talk at Semaine de l'Astrophysique Française (Université Paris Diderot, Paris, 3-6 June 2014)
- Black hole horizons, review talk at SN2NS Workshop (Palais de la Découverte, Paris, 3-5 February 2014)
- General relativity calculus with SageManifolds, talk at CoCoNuT Meeting 2013 (Meudon, 4-6 December 2013)
- SageManifolds: A free tool for differential geometry and tensor calculus, seminar at Laboratoire Astro-Particules et Cosmologie, Université Paris Diderot (Paris, 12 November 2013)
- SageManifolds: A free package for differential geometry and tensor calculus, talk at 20th International Conference on General Relativity and Gravitation (Warsaw, Poland, 7-13 July 2013)
- SageManifolds: A free package for differential geometry, invited talk at Asymptotic Analysis in General Relativity (Cergy-Pontoise, France, 13-14 juin 2013)
- Black hole physics: recent developments and observational perspectives, invited talk at Semaine de l'Astrophysique Française (Montpellier, France, 4-7 June 2013)
- Imaging numerical spacetimes, invited talk at the YITP Long-Term Workshop on Gravitational Waves and Numerical Relativity (Kyoto, Japan, 19 may - 22 June 2013)
- Gravitational waves: a brief overview, invited talk at the Workshop GRAMAP (Paris, France, 10-12 April 2013)
- Gravitational waves and black holes, présentation dans le cadre du cours de Frédéric Daigne
*Trous noirs, étoiles à neutrons et phénomènes associés*à l'École Polytechnique (Palaiseau, France, 19 March 2013) - Black hole physics entering a new observational era, seminar at Laboratoire de Mathématiques et Physique Théorique (Tours, France, 29 November 2012)
- Spacetimes of rotating stars and black holes, illustrations of the lectures given at NS Synergy 2012 Workshop / School (Opava, Czech Republic, 1-6 October 2012)
- Notes sur la mesure de la vitesse des neutrinos dans l'expérience OPERA, présentation au Café+ du LUTH (Meudon, 5 octobre 2011)
- Magnetohydrodynamics in stationary and axisymmetric spacetimes: a geometrical approach, seminar at GReCO, Institut d'Astrophysique de Paris (7 March 2011)
- Magnetohydrodynamics in stationary and axisymmetric spacetimes: a geometrical approach, invited talk at the workshop Black Holes, General Relativity, Waves (Roscoff, France, 8-10 November 2010)
- A geometrical approach to relativistic magnetohydrodynamics, invited talk at the 20th workshop on General Relativity and Gravitation in Japan (JGRG20) (Kyoto, Japan, 21-25 September 2010)
- Magnetized binary compact objects, talk at the 19th International Conference on General Relativity and Gravitation (GR19) (Mexico City, Mexico, 5-9 July 2010)
- Special relativity from an accelerated observer perspective, seminar at IMCEE and SYRTE, Observatoire de Paris (14 June 2010)
- A geometrical approach to relativistic magnetohydrodynamics, invited talk at Journées Aspects géométriques de la relativité générale, Institut Élie Cartan (Nancy, France, 8-9 June 2010)
- Black holes: from event horizons to trapping horizons, seminar at CERN Theory Division (CERN, Geneva, Switzerland, 17 March 2010)
- Constraining the dense matter equation of state with gravitational wave astrophysics, seminar at Instytut Matematyczny Polskiej Akademii Nauk (Warsaw, Poland, 22 January 2010)
- Black holes: from event horizons to trapping horizons, seminar at Laboratoire d'Astrophysique de Toulouse-Tarbes (Toulouse, 10 December 2009)
- Constrained schemes for evolving the 3+1 Einstein equations, invited talk at the CoCoNuT meeting 2009 (Valencia, Spain, 4-6 November 2009)
- Black holes: from event horizons to trapping horizons, seminar at Laboratoire de Physique Théorique, Université Paris Sud (Orsay, 14 October 2009)
- Trapping horizons and black holes, seminar at Département de mathématiques, Université de Bretagne Occidentale (Brest, 5 June 2009)
- Black holes: from event horizons to trapping horizons, seminar at Institut Non Linéaire de Nice (Sophia Antipolis, 2 April 2009)
- Constraints on dense matter equation of state from gravitational wave astrophysics, seminar at Institut de Physique Nucléaire (Université Paris-Sud, Orsay, 19 January 2009)
- Black holes as trapping horizons, seminar at Centrum Astronomiczne im. M. Kopernika (Warsaw, Poland, 17 November 2008)
- Full constrained formulations of Einstein's equations, invited talk at the Conference Numerical Modelling of Astrophysical Sources of Gravitational Radiation (Universidad Internacional Menéndez Pelayo, Valencia, Spain, 8-12 September 2008)
- New approaches to black holes, seminar at the Okinawa National College of Technology (Nago, Okinawa, Japan, 18 August 2008)
- Black holes and gravitational waves: general relativity at work, seminar at the Faculty of Science, University of the Ryukyus (Nishihara, Okinawa, Japan, 11 August 2008)
- Lectures at the 2008 International Summer School on Computational Methods in Gravitation and Astrophysics (Asia Pacific Center for Theoretical Physics, Pohang, Korea, 28 July - 1 August 2008):
- Modelling black holes as trapping horizons, invited talk at the Post Newton 2008 International Workshop (Jena, Germany, 11-14 June 2008)
- A viscous fluid analogy for trapping and dynamical horizons, invited talk at the Conference Geometry, Topology, QFT and Cosmology(Paris, 28-30 May 2008)
- Compact objects and strange quark stars, review talk at Journées Physique Nucléaire de la SFP (Nantes, 13-14 May 2008)
- Géométrisation du critère de simultanéité d'Einstein et mesure des temps et des distances, presentation at Journée sur la Mesure en Physique (LUTH, Observatoire de Paris, Meudon, 23 November 2007)
- New theoretical approaches to black holes, invited talk at Jean-Pierre Lasota Conference (Trzebieszowice Castle, Ladek Zdroj, Poland, 7-13 October 2007)
- Neutron stars: from astrophysics to nuclear physics, presentation at LEA Astro-PF (Meudon, 4 October 2007)
- Objets compacts et matière dense, presentation at Journée de l'Astroparticule, (CNRS, Paris, 7 September 2007)
- New theoretical perspectives on black holes, seminar at Departamento de Gravitacion y Teoria de Campos, Instituto de Ciencias Nucleares, Universidad Nacional Autonoma de Mexico (Mexico City, Mexico, 5 December 2006)
- Construction of initial data for 3+1 numerical relativity, lectures given at the VII Mexican School on Gravitation and Mathematical Physics (Playa del Carmen, Mexico, 26 Nov - 1 Dec 2006) Part 1, Part 2, Part 3, Part 4
- 3+1 Formalism and Bases of Numerical Relativity, lectures given at the General Relativity Trimester (Institut Henri Poincaré, Paris, October 2006)
- Trapping horizons as inner boundary conditions for black hole spacetimes, invited talk at New Frontiers in Numerical Relativity conference (AEI, Golm, Germany, 17-21 July 2006)
- Black holes: new theoretical approaches and applications to numerical relativity, talk at Semaine de l'Astrophysique Française (Journées de la SF2A) (Paris, 26-30 June 2006)
- New theoretical perspectives on black holes, talk at the Journées LISA France (Meudon, 15-16 May 2006)
- Tensor calculus with Lorene, lecture at School on spectral methods (CIAS, Meudon, 16 November 2005)
- An introduction to polynomial interpolation, lecture at School on spectral methods (CIAS, Meudon, 14 November 2005)
- Black holes: new approaches and the generalized Damour-Navier-Stokes equation, seminar at journal-club Cosmologie et gravitation relativiste (Meudon, 7 October 2005)
- Evolution of 3+1 Einstein equations via a constrained scheme, seminar at Department of Earth Science and Astronomy, University of Tokyo (Tokyo, Japan, 19 August 2005)
- Numerical relativity and sources of gravitational waves, seminar in the Post-YKIS 2005 program (Yukawa Institute for Theoretical Physics, Kyoto, Japan, 29 July 2005)
- A generalized Damour-Navier-Stokes equation applied to trapping horizons, invited talk at Post-YKIS 2005 Workshop (Yukawa Institute for Theoretical Physics, Kyoto, Japan, 27 July 2005)
- Numerical relativity and sources of gravitational waves, seminar at Colloquium de Cosmologie et Astroparticules (Université Paris 6, 26 January 2005)
- Gravitational radiation from a binary system, talk at Journées LISA France (APC, Collège de France, Paris, 20-21 January 2005)
- A new formulation for evolving neutron star spacetimes, talk at 1st Astro-PF workshop,
*Compact Stars: structure, dynamics, and gravitational waves*(CAMK, Warsaw, Poland, 13-15 October 2004) - Time evolution of 3+1 Einstein equations via a constrained scheme, talk at the 17th International Conference on General Relativity and Gravitation (GR17) (Dublin, Ireland, 18-23 July 2004)
- Multidomain spectral methods based on spherical coordinates for numerical relativity, talk at ICOSAHOM 2004 (Brown University, Providence, USA, 21-25 June 2004)
- Numerical approach to the Cauchy problem: recent developments, talk at Journée Yvonne Choquet-Bruhat organized at IHÉS (Institut des Hautes Études Scientifiques) (Bures-sur-Yvette, 8 mars 2004)
- Relativité numérique et sources d'ondes gravitationnelles, seminar at IAP (Institut d'Astrophysique de Paris, 12 Dec. 2003)
- Recent progress in the numerical simulations of gravitational wave sources, talk at Gravitation et expérience 2003 (Paris, 8-10 Oct. 2003)
- Numerical approaches to the relativistic two-body problem: constructing initial data, review talk at Mathematics of Gravitation II (Banach Center, Warsaw, Poland, 1-9 Sep. 2003)
- Étoiles à neutrons, étoiles de quarks, trous noirs et ondes gravitationnellesHabilitation à Diriger des Recherches, Meudon, 4 July 2003)
- Last orbits of binary neutron stars and binary black holes, review talk at Deutsche Physikalische Gesellschaft 67. Physikertagung (Hannover, Germany, 24-28 March 2003)
- Are neutron stars actually strange stars ?, seminar at Collège de France (PCC lab) (12 December 2002)
- Extrinsic curvature in quasiequilibrium binary black hole spacetimes, review talk at 12th Japanese workshop on General Relativity and Gravitation (Tokyo, Japan, November 2002)
- Spectral methods in numerical relativity, seminar at Laboratoire Jacques-Louis Lions, Université Paris 6 (15 November 2002)
- Lasts orbits of inspiralling binary black holes, talk at the Gravitation and Experiment 2002 Meeting (Pisa, Italy, October 2002)
- Introduction to spectral methods, review talk at the 4th EU Network Meeting (Palma de Mallorca, Spain, September 2002)>
- Observing black holes with gravitational waves, review talk at Semaine de l'Astrophysique Française (Paris, June 2002)
- Have strange quark stars been discovered ?, talk at Semaine de l'Astrophysique Française (Paris, June 2002)
- Are neutron stars actually strange stars ?, seminar at IAP (Institut d'Astrophysique de Paris) (14 June 2002)
- Gravitational waves from binary black holes, review talk at Black holes: theory confronts reality, three years after (Santa-Barbara, USA, February 2002)
- The Meudon/Paris group, presentation at the Mid-Term Review of the EU Network Sources of Gravitational Radiation (Southampton, UK, January 2002)
- Gravitation relativiste au LUTH, presentation in front of the Comité d'évaluation du LUTH (Meudon, October 2001)
- Numerical relativity and binary black holes, talk at Journées Relativistes 2001 (Dublin, Ireland, September 2001)