Institut d'Astrophysique de Paris
Institut d'Astrophysique de Paris
  • Видео 641
  • Просмотров 3 710 414
Do Giant Impacts Kickstart Rocky Planet Habitability?
IAP weekly specialised seminars / 21 June 2024
Ramon Brasser (Konkoly Observatory, Research Centre for Astronomy and Earth Sciences, Budapest, Hungary & Centre for Planetary Habitability, University of Oslo, Norway)
Earth is the only inhabited planet that we know of. Life may have begun about 4.36 billion years ago in the aftermath of a colossal impact with a lunar-sized object some 4.48 billion years ago that produced a temporary hydrogen atmosphere due to the reaction of the impactor’s metal core with terrestrial surface water. This atmosphere provided the strongly reducing environment that created the pre-biotic molecules that may have been suitable to begin life.
Since a rocky planet’s m...
Просмотров: 228

Видео

The physics of molecular hydrogen in space with JWST
Просмотров 341День назад
IAP weekly specialised seminars / 14 June 2024 Pierre Guillard (Institut d'Astrophysique de Paris, Sorbonne Université & CNRS, France) Our progress some fundamental questions in astrophysics, namely the formation of planets, stars and galaxies, depends critically on our ability to observe molecular hydrogen (H2). Initiator of complex chemistry in the interstellar medium, H2 is a tracer of molec...
The vigorous growth of early galaxies
Просмотров 32121 день назад
IAP weekly specialised seminars / 31 May 2024 Sandro Tacchella (Kavli Institute for Cosmology, Cambridge, United Kingdom) After successful deployment and commissioning, JWST has now been delivering data for nearly two years. I will give an overview of the first-year surprises and discoveries, zooming in on some of the earliest galaxies and presenting new results on the spatially resolved growth...
Modeling gravitational waves from asymmetric binaries: from the intermediate to the extreme
Просмотров 325Месяц назад
IAP weekly specialised seminars / 24 May 2024 Adam Pound (School of Mathematical Sciences at University of Southampton, United Kingdom) Current, ground-based gravitational-wave detectors have almost exclusively observed compact binaries made up of roughly equal-mass pairs of objects (black hole or neutron stars). But future detectors will observe asymmetric binaries with a wide spectrum of mass...
The Emergence of Dwarf Galaxies, Star Clusters and Something In-between
Просмотров 572Месяц назад
IAP weekly specialised seminars / 3 May 2024 Justin Read (University of Surrey, Guildford, United Kingdom) Over the past five years, numerical simulations of galaxy formation have quietly passed a key milestone. The latest cosmological simulations are now able to resolve the sites of star formation and the impact of individual stellar feedback events. In this talk, I explain how this has led to...
The GBAR project, progress and prospects
Просмотров 3562 месяца назад
IAP weekly specialised seminars / 26 April 2024 Paul Indelicato (Laboratoire Kastler Brossel, Paris, France) Among the tests of the Standard Model at low energy, those made with antimatter have a special status, whether they concern precision tests of the CPT theorem or the study of the effects of gravitation on antimatter. Three experiments are being developed for these gravitational tests, AL...
Measuring and modelling galaxy intrinsic alignment
Просмотров 3072 месяца назад
IAP weekly specialised seminars / 19 April 2024 Danielle Leonard (School of Mathematics Statistics and Physics, Newcastle University, United Kingdom) Characterising dark energy - the mysterious phenomenon driving the accelerating expansion of the Universe - is the holy grail of modern cosmology. Determining its nature using weak gravitational lensing is a primary science goal of Rubin Observato...
Cosmic ray feedback and magnetic dynamos in galaxy formation
Просмотров 2492 месяца назад
IAP weekly specialised seminars / 12 April 2024 Christoph Pfrommer (Leibniz Institute for Astrophysics, Postdam) Understanding the physics of galaxy formation is an outstanding problem in modern astrophysics. Recent cosmological simulations have demonstrated that feedback by star formation, supernovae and active galactic nuclei appears to be critical in obtaining realistic disk galaxies and to ...
LA RÉVOLUTION DES EXOPLANÈTES
Просмотров 4,2 тыс.2 месяца назад
La première planète autour d'une étoile autre que le Soleil a été découverte en 1995 à l'Observatoire de Haute-Provence. Des milliers d'autres exoplanètes ont été détectées depuis, avec des télescopes au sol et depuis l’espace. Ces découvertes constituent une révolution en astrophysique, et pour la connaissance humaine en général. Conférence donnée dans le cadre du cycle « Une question, un cher...
String theory: from the landscape to the swampland
Просмотров 4213 месяца назад
IAP weekly specialised seminars / 15 March 2024 Mariana Graña (IPhT, CEA Saclay, Gif-sur-Yvette, France) Despite its uniqueness, string theory has a “landscape” of low-energy solutions with very different observable physics. These solutions are usually found using low-energy effective theories which, in order to satisfy experimental constraints such as the accelerated expansion of the universe,...
From X-rays to gamma-rays: recent developments on supernova remnants physics
Просмотров 3733 месяца назад
From X-rays to gamma-rays: recent developments on supernova remnants physics
Énergie nucléaire, cycles du combustible et technologies de réacteurs
Просмотров 6814 месяца назад
Énergie nucléaire, cycles du combustible et technologies de réacteurs
Simulations and models of the cosmic reionization evolution
Просмотров 3604 месяца назад
Simulations and models of the cosmic reionization evolution
The main sequence of active galaxies: a star formation history
Просмотров 4304 месяца назад
The main sequence of active galaxies: a star formation history
Dissecting core-collapse supernovae using neutrinos
Просмотров 3205 месяцев назад
Dissecting core-collapse supernovae using neutrinos
Dark matter searches: status and prospects
Просмотров 4815 месяцев назад
Dark matter searches: status and prospects
Search for gravitational waves with pulsar timing array
Просмотров 3485 месяцев назад
Search for gravitational waves with pulsar timing array
L’Institut d’astrophysique de Paris vous souhaite une excellente année 2024 !
Просмотров 3545 месяцев назад
L’Institut d’astrophysique de Paris vous souhaite une excellente année 2024 !
Review: Symmetries in Deep Learning (S. Villar)
Просмотров 1735 месяцев назад
Review: Symmetries in Deep Learning (S. Villar)
Review: Deep learning algorithms for morphological classification of galaxies (H. Dominguez-Sanchez)
Просмотров 3715 месяцев назад
Review: Deep learning algorithms for morphological classification of galaxies (H. Dominguez-Sanchez)
ML-IAP/CCA-2023: Debate #3 "What is the impact of large language models in astronomy?"
Просмотров 1335 месяцев назад
ML-IAP/CCA-2023: Debate #3 "What is the impact of large language models in astronomy?"
Conclusions to ML-IAP/CCA-2023 (Licia Verde)
Просмотров 1115 месяцев назад
Conclusions to ML-IAP/CCA-2023 (Licia Verde)
Scientific Discovery from Ordered Information Decomposition
Просмотров 1375 месяцев назад
Scientific Discovery from Ordered Information Decomposition
Anomaly detection using local measures of uncertainty in latent representations
Просмотров 1435 месяцев назад
Anomaly detection using local measures of uncertainty in latent representations
Significance Mode Analysis (SigMA) for hierarchical structures
Просмотров 565 месяцев назад
Significance Mode Analysis (SigMA) for hierarchical structures
Reionisation time fields reconstruction from 21 cm signal maps
Просмотров 835 месяцев назад
Reionisation time fields reconstruction from 21 cm signal maps
Generative Topographic Mapping for tomographic redshift estimates
Просмотров 1055 месяцев назад
Generative Topographic Mapping for tomographic redshift estimates
Spatially Variant Point Spread Functions for Bayesian Imaging
Просмотров 425 месяцев назад
Spatially Variant Point Spread Functions for Bayesian Imaging
Machine-directed gravitational-wave counterpart discovery
Просмотров 545 месяцев назад
Machine-directed gravitational-wave counterpart discovery
Machine learning as a key component in the science processing pipelines of space- and ground-ba ...
Просмотров 535 месяцев назад
Machine learning as a key component in the science processing pipelines of space- and ground-ba ...