Zobrazeno 1 - 10
of 1 859
pro vyhledávání: '"Lazzati A."'
We present a novel implementation of a soft sphere, discrete elements code to simulate the dynamics of self-gravitating granular materials. The code is used to study the outcome of sub-sonic collisions between self-gravitating rubble piles with masse
Externí odkaz:
http://arxiv.org/abs/2410.22189
Our goal is to extract useful knowledge from demonstrations of behavior in sequential decision-making problems. Although it is well-known that humans commonly engage in risk-sensitive behaviors in the presence of stochasticity, most Inverse Reinforce
Externí odkaz:
http://arxiv.org/abs/2409.17355
GRB 221009A was the Brightest gamma-ray burst Of All Time (BOAT), surpassing in prompt brightness all GRBs discovered in ~50 yr and in afterglow brightness in ~20 yr. We observed the BOAT with XMM-Newton 2.3 d after the prompt. The X-ray afterglow wa
Externí odkaz:
http://arxiv.org/abs/2408.03306
Autor:
Busby, Ian, Lazzati, Davide
We analyze the spectral evolution of 62 bright Fermi gamma-ray bursts with large enough signal to noise to allow for time resolved spectral analysis. We develop a new algorithm to test for single-pulse morphology that is insensitive to the specific s
Externí odkaz:
http://arxiv.org/abs/2407.12926
Autor:
Parsotan, Tyler, Lazzati, Davide
While Gamma Ray Bursts (GRBs) have the potential to shed light on the astrophysics of jets, compact objects, and cosmology, a major set back in their use as probes of these phenomena stems from our incomplete knowledge surrounding their prompt emissi
Externí odkaz:
http://arxiv.org/abs/2407.01831
In online Inverse Reinforcement Learning (IRL), the learner can collect samples about the dynamics of the environment to improve its estimate of the reward function. Since IRL suffers from identifiability issues, many theoretical works on online IRL
Externí odkaz:
http://arxiv.org/abs/2406.03812
At least three members of the recently identified class of fast luminous blue optical transient show evidence of late-time electromagnetic activity in great excess of what predicted by an extrapolation of the early time emission. In particular, AT202
Externí odkaz:
http://arxiv.org/abs/2403.18911
The merger of two magnetized compact objects, such as neutron stars, forms a compact object which may launch a relativistic and collimated jet. Numerical simulations of the process show that a dense and highly magnetized medium surrounds the system.
Externí odkaz:
http://arxiv.org/abs/2403.17086
Long-duration gamma-ray bursts (LGRBs), thought to be produced during core-collapse supernovae, may have a prominent neutron component in the outflow material. If present, neutrons can change how photons scatter in the outflow by reducing its opacity
Externí odkaz:
http://arxiv.org/abs/2402.18657
Inverse reinforcement learning (IRL) aims to recover the reward function of an expert agent from demonstrations of behavior. It is well-known that the IRL problem is fundamentally ill-posed, i.e., many reward functions can explain the demonstrations.
Externí odkaz:
http://arxiv.org/abs/2402.15392