Pierre-Alexandre Duverne
A5101961209- Gamma-ray bursts and supernovae
- Pulsars and Gravitational Waves Research
- Astrophysical Phenomena and Observations
- Astro and Planetary Science
- Adaptive optics and wavefront sensing
- Seismology and Earthquake Studies
- Geophysics and Gravity Measurements
- Seismic Waves and Analysis
- Cosmology and Gravitation Theories
- Astrophysics and Cosmic Phenomena
- Astronomical Observations and Instrumentation
Université Paris-Saclay
2021-2024
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2021-2024
Université Paris Cité
2023-2024
Laboratoire AstroParticule et Cosmologie
2023-2024
Institut National de Physique Nucléaire et de Physique des Particules
2021-2023
Centre National de la Recherche Scientifique
2021-2023
GRB 221009A is the brightest Gamma-Ray Burst (GRB) detected in more than 50 years of study. In this paper, we present observations X-ray and optical domains after obtained by GRANDMA Collaboration (which includes from 30 professional amateur telescopes) Insight-HXMT Collaboration. We study afterglow with empirical fitting GRANDMA+HXMT data, augmented data literature up to 60 days. then model numerically, using a Bayesian approach, HXMT-LE observations, that augment Swift-XRT additional...
Abstract First detected on 2023 November 4 by the Gravitational-wave Optical Transient Observer, SN 2023wrk is a Type Ia Supernova at 40 Mpc, with significant unburned carbon in outer ejecta. In this note, we present photometric and spectroscopic observations analysis conducted Global Rapid Advanced Network Devoted to Multi-messenger Addict over 115 days period, which includes 78 of measurements. The were contributed both amateur professional astronomers. J. Liu et al. analyzed physical...
Abstract We present extensive photometric and spectroscopic observations of the nearby Type Ia supernova (SN) 2023wrk at a distance about 40 Mpc. The earliest detection this SN can be traced back to few hours after explosion. Within first days, light curve shows bump feature, while B − V color is blue remains nearly constant. overall spectral evolution similar that an 1991T/SN 1999aa-like Ia, C ii λ 6580 absorption line appears unusually strong in spectrum taken t ≈ −15.4 days maximum light....
Abstract GW170817–GRB 170817A provided the first observation of gravitational waves from a neutron star merger with associated transient counterparts across entire electromagnetic spectrum. This discovery demonstrated long-hypothesized association between short gamma-ray bursts and mergers. More joint detections are needed to explore relation parameters inferred wave properties burst signal. We developed multimessenger analysis LIGO, Virgo, Fermi/GBM data designed for detecting weak...
Gravitational-wave data from interferometric detectors like LIGO, Virgo and KAGRA is routinely analyzed by rapid matched-filtering algorithms to detect compact binary merger events rapidly infer their spatial position, which enables the discovery of associated non-GW transients GRB 170817A AT2017gfo. One critical requirements for finding such counterparts that inferred sky location, usually performed Bayestar algorithm, correct. The reliability this product relies on various assumptions a...