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Two classes of gamma-ray bursts (GRBs), short and long, have been determined without any doubts, and are usually ascribed to different progenitors, yet these classes overlap for a variety of descriptive parameters. A subsample of 46 long…

High Energy Astrophysical Phenomena · Physics 2015-10-05 Mariusz Tarnopolski

Gamma-ray bursts (GRBs), as extremely energetic explosions in the universe, are widely believed to consist of two stages: the prompt phase and the subsequent afterglow. Recent studies indicate that some high-energy photons are emitted…

High Energy Astrophysical Phenomena · Physics 2021-11-02 Yingtian Chen , Bo-Qiang Ma

We conduct an incentivized laboratory experiment to study people's perception of generative artificial intelligence (GenAI) alignment in the context of economic decision-making. Using a panel of economic problems spanning the domains of…

Theoretical Economics · Economics 2026-04-03 Kevin He , Ran Shorrer , Mengjia Xia

Models of gamma ray bursts are reviewed in the light of recent observations of afterglows which point towards a cosmological origin. The physics of fireball shock models is discussed, with attention to the type of light histories and…

Astrophysics · Physics 2009-10-30 P. Meszaros

Different forms of long gamma-ray bursts (GRBs) Luminosity Functions are considered on the basis of an explicit physical model. The inferred flux distributions are compared with the observed ones from two samples of GRBs, Swift and Fermi…

High Energy Astrophysical Phenomena · Physics 2021-11-17 Shreya Banerjee , David Eichler , Dafne Guetta

I review gamma-ray burst optical/multiwavelength afterglow observations since 1997, when the first counterparts to GRBs were discovered. I discuss what we have learned from multiwavelength observations of GRB afterglows in relation to the…

Astrophysics · Physics 2009-10-31 Titus J. Galama

Thanks to their enormous energy release, Gamma Rays Bursts (GRBs) have recently attracted a lot of interest to probe the Hubble diagram (HD) deep into the matter dominated era and hence complement Type Ia Supernovae (SNeIa). We consider…

Cosmology and Nongalactic Astrophysics · Physics 2011-06-27 S. Capozziello , V. F. Cardone , M. G. Dainotti , M. De Laurentis , L. Izzo , M. Perillo

Recently, several new correlations between gamma ray burst (GRB) observables have been discovered. Like previously well established correlations, they challenge GRB models. Here we show that in the cannonball (CB) model of GRBs, these newly…

High Energy Astrophysical Phenomena · Physics 2015-05-14 Shlomo Dado , Arnon Dar

It has been observationally established that supernovae (SNe) of Type Ic produce long duration gamma ray bursts (GRBs) and that neutron star mergers generate short hard GRBs. SN-Less GRBs presumably originate in a phase transition of a…

High Energy Astrophysical Phenomena · Physics 2022-07-06 Shlomo Dado , Arnon Dar , A. De Rújula

We consider whether the variability properties of Gamma-Ray Bursts (GRBs) that produce bright optical and longer wavelength transient afterglows (A-GRBs) are the same as a larger, inclusive sample of bright, long-duration GRBs, selected…

Astrophysics · Physics 2009-11-10 Joseph A. Munoz , Jonathan C. Tan

Gamma-ray bursts (GRBs) are among the most luminous electromagnetic transients in the universe, providing unique insights into extreme astrophysical processes and serving as promising probes for cosmology. Unlike Type Ia supernovae, which…

High Energy Astrophysical Phenomena · Physics 2025-01-28 Chen Deng , Yong-Feng Huang , Fan Xu , Abdusattar Kurban

The prompt emission mechanism of gamma-ray bursts (GRB) even after several decades remains a mystery. However, it is believed that correlations between observable GRB properties given their huge luminosity/radiated energy and redshift…

High Energy Astrophysical Phenomena · Physics 2018-04-25 Maria Dainotti

Gamma Ray Bursts (GRBs) are unpredictable and brief flashes of gamma rays that occur about once a day in random locations in the sky. Since gamma rays do not penetrate the Earth's atmosphere, they are detected by satellites, which…

High Energy Astrophysical Phenomena · Physics 2015-06-05 A. Gomboc

An important milestone for AI is the development of algorithms that can produce drawings that are indistinguishable from those of humans. Here, we adapt the 'diversity vs. recognizability' scoring framework from Boutin et al, 2022 and find…

Artificial Intelligence · Computer Science 2023-06-01 Victor Boutin , Thomas Fel , Lakshya Singhal , Rishav Mukherji , Akash Nagaraj , Julien Colin , Thomas Serre

We propose that gamma ray bursts (GRBs) are produced by a shower of heavy blobs running into circumstellar material at highly relativistic speeds. The gamma ray emission is produced in the shocks these bullets drive into the surrounding…

Astrophysics · Physics 2009-10-31 S. Heinz , M. C. Begelman

Gamma-ray bursts (GRBs) are the most brilliant objects in the Universe but efforts to estimate the total energy released in the explosion -- a crucial physical quantity -- have been stymied by their unknown geometry: spheres or cones. We…

Gamma Ray Bursts (GRBs) are found at much higher redshifts (z>6) than Supernova Ia (z~1), and hence, they can be used to probe very primitive universe. However, radiation mechanism of GRB remains a puzzle, unlike Supernova Ia. Through…

High Energy Astrophysical Phenomena · Physics 2015-06-18 Rupal Basak , A. R. Rao

A scenario is proposed that explains both the observed high pulsar velocities and extragalactic gamma-ray bursts (GRBs). The model involves an ultra- relativistic jet from a supernova (SN), that produces a GRB and its afterglow, whose…

Astrophysics · Physics 2009-10-30 Renyue Cen

Due to their highly luminous nature, gamma-ray bursts (GRBs) are useful tools in studying the early Universe (up to z = 10). We consider whether the available subset of Swift high redshift GRBs are unusual when compared to analogous…

High Energy Astrophysical Phenomena · Physics 2013-08-27 O. M. Littlejohns , N. R. Tanvir , R. Willingale , P. T. O'Brien , P. A. Evans , A. J. Levan

In the present study, we investigate and compare reasoning in large language models (LLM) and humans using a selection of cognitive psychology tools traditionally dedicated to the study of (bounded) rationality. To do so, we presented to…

Computation and Language · Computer Science 2023-09-25 Nicolas Yax , Hernan Anlló , Stefano Palminteri