Zobrazeno 1 - 10
of 4 277
pro vyhledávání: '"Pe'Er, A"'
Generative modeling typically concerns the transport of a single source distribution to a single target distribution by learning (i.e., regressing onto) simple probability flows. However, in modern data-driven fields such as computer graphics and sin
Externí odkaz:
http://arxiv.org/abs/2411.00698
Autor:
Long, Killian, Pe'er, Asaf
Synchrotron maser emission is a leading candidate to explain the coherent emission from Fast Radio Bursts (FRBs). This mechanism requires a population inversion in order to operate. We show that nonresonant interactions between Alfv\'{e}n waves and a
Externí odkaz:
http://arxiv.org/abs/2410.21022
Autor:
Vyas, Mukesh Kumar, Pe'er, Asaf
We explore a new mechanism for photon energy gain in a relativistic plasma with velocity shear. This process takes place in optically thick plasma and resembles conventional Fermi acceleration, where photons undergo multiple scatterings between regio
Externí odkaz:
http://arxiv.org/abs/2410.05089
Positive spectral lags are commonly observed in gamma-ray burst (GRB) prompt phase where soft photons lag behind hard ones in their spectral studies. Opposite to this pattern, a fraction of GRBs show a negative spectral lag where hard photons arrive
Externí odkaz:
http://arxiv.org/abs/2410.04446
Decision trees (DTs) and their random forest (RF) extensions are workhorses of classification and regression in Euclidean spaces. However, algorithms for learning in non-Euclidean spaces are still limited. We extend DT and RF algorithms to product ma
Externí odkaz:
http://arxiv.org/abs/2410.13879
The prompt phase X- and $\gamma$-ray light curves of gamma-ray bursts (GRBs) exhibit erratic and complex behaviour, often with multiple pulses. The temporal shape of individual pulses is often modelled as 'fast rise exponential decay' (FRED). Here, w
Externí odkaz:
http://arxiv.org/abs/2409.17860
Autor:
Pe'er, Asaf, Zhang, Bing
The brightest of all time (BOAT) GRB221009A show evidence for a narrow, evolving MeV emission line. Here, we show that this line can be explained as due to pair annihilation in the prompt emission region, and that its temporal evolution is naturally
Externí odkaz:
http://arxiv.org/abs/2407.16241
Autor:
Pe'er, Asaf, Ryde, Felix
Progenitor stars of long gamma-ray bursts (GRBs) could be surrounded by a significant and complex nebula structure lying at a parsec scale distance. After the initial release of energy from the GRB jet, the jet will interact with this nebula environm
Externí odkaz:
http://arxiv.org/abs/2406.03841
Autor:
Yang, Hanming, Moretti, Antonio Khalil, Macaluso, Sebastian, Chlenski, Philippe, Naesseth, Christian A., Pe'er, Itsik
Reconstructing jets, which provide vital insights into the properties and histories of subatomic particles produced in high-energy collisions, is a main problem in data analyses in collider physics. This intricate task deals with estimating the laten
Externí odkaz:
http://arxiv.org/abs/2406.03242
Cross-validation is a common method for estimating the predictive performance of machine learning models. In a data-scarce regime, where one typically wishes to maximize the number of instances used for training the model, an approach called "leave-o
Externí odkaz:
http://arxiv.org/abs/2406.01652