EN BREF Modèle cosmologique: Description mathématique de l’histoire de l’Univers. Équations de Friedmann: Fondement des modèles cosmologiques modernes. Cosmologie: Étude des structures et de l’évolution de l’Univers. Physique quantique: Base des théories des particules et de la matière. Constante de Hubble: Mesure de l’expansion de l’Univers. Calcul différentiel et intégral: Outils mathématiques clés en mécanique … Read more
EN BREF Les neutrinos sont des particules subatomiques presque sans masse. Ils n’ont pas de charge électrique, rendant leur identification complexe. Ils agissent comme messagers des phénomènes cosmiques. Les neutrinos proviennent d’événements énergétiques tels que les supernovae. Ils permettent une meilleure compréhension des phénomènes astrophysiques. Ces particules sont plus abondantes que la matière noire. L’astronomie … Read more
IN BRIEF Machine learning for cosmological analysis. Correction of detection biases of weak lenses. Use of algorithms for astrophysical parameter estimation. Introduction to ensemble methods. Estimations of biases related to galaxy properties. Applications of AI in the quest for infinity. Use of optimal transport algorithms in cosmology. Machine learning in astronomy and biomedicine. In the … Read more
IN BRIEF Quantum physics and cosmology were born in the early 20th century. Quantum cosmology describes the early moments of the Universe. The concept of the quantum multiverse suggests an infinity of universes. Quantum gravity raises many questions about the nature of the Universe. Big Bang and particle physics: essential links. Projects on loop quantum … Read more
IN BRIEF Quantum fluctuations: spontaneous energy variations in the quantum vacuum. Influence on the formation of structures in the universe. Elementary particles: rapid emergence and annihilation. Uncertainty principles: impact on quantum theory. Primordial universe: crucial role in cosmic inflation. Quantum vacuums: concepts of fluctuating energy zones. Applications in cosmology and particle physics. Quantum fluctuations represent … Read more
IN BRIEF Big Bang: explosive event marking the birth of the Universe Occurred about 13.7 billion years ago Emergence of a dense and hot Universe The Big Bang theory supported by contemporary observations Universe in expansion since its creation Questions about the origin: what happened before? No defined time before the Big Bang Exploration of … Read more
IN BRIEF Big Bang : a cosmic event marking the origin of the Universe according to the current cosmological model. Origins of the Universe : study of the conditions that preceded and followed the Big Bang. Formation Eras : the Universe evolved through the radiation era and then the matter era. String Theory : suggests … Read more
IN BRIEF Observable universe: The visible part of the universe, limited by the cosmic horizon. Size of the universe: Estimated to be at least 96 billion light-years. Cosmic horizon: Boundary beyond which the universe remains opaque. Cosmic microwave background: Light from the Big Bang visible at about 13.8 billion light-years. Expansion of the universe: The … Read more
IN BRIEF Dark Matter: Makes up about 25% of the universe. Dark Energy: Represents about 70% of the universe. Dark Matter: Has an attractive virtue, promoting clustering. Dark Energy: Has a repulsive virtue, pushing celestial objects apart. 95% of the Universe: Made up of dark matter and dark energy. Invisible: Cannot be detected by light. … Read more
IN BRIEF Spiral galaxies: a grouping of hundreds of billions of stars Disk-shaped structure and central bulb Formed by the collapse of hydrogen and helium clouds Spiraled arms influenced by giant molecular clouds Notable examples such as the Milky Way and the Andromeda Galaxy Variety of shapes: spirals, elliptical, barred, and irregular Mysteries persist, particularly … Read more