Astroparticles, Astrophysics and Cosmology (A2C)

GRANDMA and HXMT Observations of GRB 221009A — the Standard-Luminosity Afterglow of a Hyper-Luminous Gamma-Ray Burst

GRB 221009A is the brightest Gamma-Ray Burst (GRB) detected in more than 50 years of study. In this paper, we present observations in the X-ray and optical domains after the…

Continue ReadingGRANDMA and HXMT Observations of GRB 221009A — the Standard-Luminosity Afterglow of a Hyper-Luminous Gamma-Ray Burst

JAX-COSMO: An End-to-End Differentiable and GPU Accelerated Cosmology Library

Extrait de JAX-COSMO: An End-to-End Differentiable and GPU Accelerated Cosmology Library (https://arxiv.org/abs/2302.05163) We present jax-cosmo, a library for automatically differentiable cosmological theory calculations.jax-cosmo uses the JAX library, which has created…

Continue ReadingJAX-COSMO: An End-to-End Differentiable and GPU Accelerated Cosmology Library

Analysis methods to localize and characterize X-ray sources with the Micro-channel X-ray Telescope on board the SVOM satellite

SVOM is a Sino-French space mission targeting high-energy transient astrophysical objects such as gamma-ray bursts. The soft X-ray part of the spectrum is covered by the Micro-channel X-ray Telescope (MXT)…

Continue ReadingAnalysis methods to localize and characterize X-ray sources with the Micro-channel X-ray Telescope on board the SVOM satellite