Zobrazeno 1 - 10
of 4 221
pro vyhledávání: '"A. Pe'Er"'
Autor:
N. Sahakyan, D. Bégué, A. Casotto, H. Dereli-Bégué, P. Giommi, S. Gasparyan, V. Vardanyan, M. Khachatryan, A. Pe’er
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 70 (2024)
In the context of modeling spectral energy distributions (SEDs) for blazars, we extend the method that uses a convolutional neural network (CNN) to include external inverse Compton processes. The model assumes that relativistic electrons within the e
Externí odkaz:
https://doaj.org/article/dbe700151003463a8595dbc65e4783df
Autor:
Y. Shvartzvald, E. Waxman, A. Gal-Yam, E. O. Ofek, S. Ben-Ami, D. Berge, M. Kowalski, R. Bühler, S. Worm, J. E. Rhoads, I. Arcavi, D. Maoz, D. Polishook, N. Stone, B. Trakhtenbrot, M. Ackermann, O. Aharonson, O. Birnholtz, D. Chelouche, D. Guetta, N. Hallakoun, A. Horesh, D. Kushnir, T. Mazeh, J. Nordin, A. Ofir, S. Ohm, D. Parsons, A. Pe’er, H. B. Perets, V. Perdelwitz, D. Poznanski, I. Sadeh, I. Sagiv, S. Shahaf, M. Soumagnac, L. Tal-Or, J. Van Santen, B. Zackay, O. Guttman, P. Rekhi, A. Townsend, A. Weinstein, I. Wold
Publikováno v:
The Astrophysical Journal, Vol 964, Iss 1, p 74 (2024)
The Ultraviolet Transient Astronomy Satellite (ULTRASAT) is scheduled to be launched to geostationary orbit in 2027. It will carry a telescope with an unprecedentedly large field of view (204 deg ^2 ) and near-ultraviolet (NUV; 230–290 nm) sensitiv
Externí odkaz:
https://doaj.org/article/cf5e6c9da6ff40c79d60eec890198278
Autor:
D. Bégué, N. Sahakyan, H. Dereli-Bégué, P. Giommi, S. Gasparyan, M. Khachatryan, A. Casotto, A. Pe’er
Publikováno v:
The Astrophysical Journal, Vol 963, Iss 1, p 71 (2024)
Modeling the multiwavelength spectral energy distributions (SEDs) of blazars provides key insights into the underlying physical processes responsible for the emission. While SED modeling with self-consistent models is computationally demanding, it is
Externí odkaz:
https://doaj.org/article/5718b172c87742c3bd9dd2b109facb48
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 135 (2024)
The study of magnetically arrested disks (MAD) has attracted strong interest in recent years because these disk configurations were found to generate strong jets, as observed in many accreting systems. Here, we present the results of 14 general relat
Externí odkaz:
https://doaj.org/article/3cdb88173ed1401a9f8ef6adcf5ee39d
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
We extend decision tree and random forest algorithms to product space manifolds: Cartesian products of Euclidean, hyperspherical, and hyperbolic manifolds. Such spaces have extremely expressive geometries capable of representing many arrangements of
Externí odkaz:
http://arxiv.org/abs/2406.05227
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
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 264, Iss 2, p 32 (2023)
We introduce a new GPU-accelerated general relativistic magnetohydrodynamic code based on HARM, which we call cuHARM. The code is written in CUDA-C and uses OpenMP to parallelize multi-GPU setups. Our code allows us to run high-resolution simulations
Externí odkaz:
https://doaj.org/article/20bddba99d984e37b32146dae3756c13