A5049581490- Gamma-ray bursts and supernovae
- Astronomy and Astrophysical Research
- Astrophysical Phenomena and Observations
- Astrophysics and Cosmic Phenomena
- Astro and Planetary Science
- High-Energy Particle Collisions Research
- Topic Modeling
- Stellar, planetary, and galactic studies
- Ionosphere and magnetosphere dynamics
- Astronomical Observations and Instrumentation
- Pulsars and Gravitational Waves Research
- Planetary Science and Exploration
- Black Holes and Theoretical Physics
- Solar and Space Plasma Dynamics
- Superconducting Materials and Applications
- Geophysics and Gravity Measurements
Stockholm University
2023-2024
AlbaNova
2023-2024
University of Bath
2020-2021
GRB 221009A ($z=0.151$) is one of the closest known long $\gamma$-ray bursts (GRBs). Its extreme brightness across all electromagnetic wavelengths provides an unprecedented opportunity to study a member this still-mysterious class transients in exquisite detail. We present multi-wavelength observations extraordinary event, spanning 15 orders magnitude photon energy from radio $\gamma$-rays. find that data can be partially explained by forward shock (FS) highly-collimated relativistic jet...
ABSTRACT We present high spectral resolution observations of the hot Jupiter WASP-94 A b using HARPS instrument on ESO’s 3.6-m telescope in La Silla, Chile. probed for Na absorption its atmosphere as well constrained previously reported misaligned retrograde orbit Rossiter–McLaughlin effect. Additionally, we undertook a combined atmospheric retrieval analysis with published low-resolution data. confirm constrain orbital misalignment our measurement projected spin-orbit obliquity λ = 123.0 ±...
In recent years, dynamical relativistic jet simulation techniques have progressed to a point where it is becoming possible fully numerically resolve gamma-ray burst (GRB) blast-wave evolution across scales. However, the modeling of emission currently lagging behind and limits our efforts interpret physics GRBs. this work we combine developments in moving-mesh dynamics with local treatment non-thermal new code: GAMMA. The code involves an arbitrary Lagrangian-Eulerian approach only dominant...
Late activity of the central engine is often invoked in order to explain flares observed early X-ray afterglow gamma-ray bursts, either form an active neutron star remnant or (fall-back) accretion onto a black hole. However, these scenarios are not always plausible, particular when delayed very late times after burst. Recently, new scenario was proposed that suggests can be result passing long-lived reverse shock through stratified ejecta, with advantage it does require late-time activity....
We present high spectral resolution observations of the hot Jupiter WASP-94 A b using HARPS instrument on ESO's 3.6m telescope in La Silla, Chile. probed for Na absorption its atmosphere as well constrained previously reported misaligned retrograde orbit Rossiter-McLaughlin effect. Additionally, we undertook a combined atmospheric retrieval analysis with published low-resolution data. confirm constrain orbital misalignment our measurement projected spin-orbit obliquity $\lambda = 123.0 \pm...
Transformer models have recently become very successful in the natural language domain. Their value as sequence-to-sequence translators there, also makes them a highly interesting technique for learning relationships between astrophysical time series. Our aim is investigate how well such transformer neural network can establish causal temporal relations different channels of single-source signal. We thus apply model to two phases Gamma-Ray Bursts (GRBs), reconstructing one phase from other....
Abstract Transformer models have recently become very successful in the natural language domain. Their value as sequence-to-sequence translators there also makes them a highly interesting technique for learning relationships between astrophysical time series. Our aim is investigating how well such transformer neural network can establish causal temporal relations different channels of single-source signal. We thus apply model to two phases gamma-ray bursts (GRBs), reconstructing one phase...
GRB 221009A ($z=0.151$) is one of the closest known long $γ$-ray bursts (GRBs). Its extreme brightness across all electromagnetic wavelengths provides an unprecedented opportunity to study a member this still-mysterious class transients in exquisite detail. We present multi-wavelength observations extraordinary event, spanning 15 orders magnitude photon energy from radio $γ$-rays. find that data can be partially explained by forward shock (FS) highly-collimated relativistic jet interacting...
In recent years, the field of machine learning has seen rapid growth, with applications in a variety domains, including image recognition, natural language processing, and predictive modeling. this paper, we explore application to generation scientific articles. We present method for using generate articles based on data set papers. The uses machine-learning algorithm learn structure article training consisting is used evaluate performance by comparing generated manually written results show...