294 citations · 1.4k across the 44 of their papers we have counts for
18 papers · 1 filter
The diverse broad-band light-curves of Swift GRBs reproduced with the cannonball model
Shlomo Dado, Arnon Dar, A. De Rujula
Two radiation mechanisms, inverse Compton scattering (ICS) and synchrotron radiation (SR), suffice within the cannonball (CB) model of long gamma ray bursts (LGRBs) and X-ray flash…
Short Hard Gamma Ray Bursts And Their Afterglows
Shlomo Dado, Arnon Dar
Long duration gamma ray bursts (GRBs) and X-ray flashes (XRFs) are produced by highly- relativistic jets ejected in core-collapse supernova explosions. The origin of short hard gam…
On the origin of the correlations between Gamma-Ray Burst observables
Shlomo Dado, Arnon Dar, A. De Rujula
Several pairs of observable properties of Gamma Ray Bursts (GRBs) are known to be correlated. Many such correlations are straightforward predictions of the 'cannonball' model of GR…
Long gamma-ray bursts without visible supernovae: a case study of redshift estimators and alleged novel objects
Shlomo Dado, Arnon Dar, A. De Rujula +1
It has been argued that the observational limits on a supernova (SN) associated with GRB060614 convincingly exclude a SN akin to SN1998bw as its originator, and provide evidence fo…
On the "canonical behaviour" of the X-ray afterglows of the Gamma Ray Bursts observed with Swift's XRT
Shlomo Dado, Arnon Dar, A. De Rujula
The "canonical behaviour" of the early X-ray afterglows of long-duration Gamma-Ray Bursts (GRBs) --observed by the X-Ray Telescope of the SWIFT satellite-- is precisely the one pre…
A Unified Model of High-Energy Astrophysical phenomena
A. De Rujula
I outline a unified model of high-energy astrophysics, in which the gamma background radiation, cluster "cooling flows", gamma-ray bursts, X-ray flashes and cosmic-ray electrons an…
The supernova associated with GRB 020405
Shlomo Dado, Arnon Dar, Alvaro De Rujula
We use the very simple and successful Cannonball (CB) model of gamma ray bursts (GRBs) and their afterglows (AGs) to analyze the observations of the mildly extinct optical AG of th…
On the X-ray lines in the afterglows of GRBs
Shlomo Dado, Arnon Dar, Alvaro De Rujula
The observation of X-ray lines in the afterglow of GRB 011211 has been reported, and challenged. The lines were interpreted as blue-shifted X-rays characteristic of a set of photoi…
On the radio afterglow of gamma ray bursts
Shlomo Dado, Arnon Dar, A. De Rujula
We use the cannonball (CB) model of gamma ray bursts (GRBs) to predict the spectral and temporal behaviour of their radio afterglows (AGs). A single simple expression describes the…
Is there a 1998bw-like supernova in the afterglow of gamma ray burst 011121?
Shlomo Dado, Arnon Dar, Alvaro De Rujula
We use the very simple and successful Cannonball Model (CB) of gamma ray bursts (GRBs) and their afterglows (AGs) to analyze the observations of the strongly extinct optical AG of…
Optical and X-ray Afterglows in the Cannonball Model of GRBs
A. De Rujula
The Cannonball Model is based on the hypothesis that GRBs and their afterglows are made in supernova explosions by relativistic ejecta similar to the ones observed in quasars and m…
On the optical and X-ray afterglows of gamma ray bursts
Shlomo Dado, Arnon Dar, A. De Rujula
We severely criticize the consuetudinary analysis of the afterglows of gamma-ray bursts (GRBs) in the conical-ejection fireball scenarios. We argue that, instead, recent observatio…
The Cannonball Model of Gamma Ray Bursts: Spectral and Temporal Properties of the Gamma Rays
Arnon Dar, Alvaro De Rújula
Recent observations suggest that gamma ray bursts (GRBs) and their afterglows are produced by highly relativistic jets emitted in supernova explosions. We have proposed that the re…
What is the Cosmic-Ray luminosity of our Galaxy?
A. Dar, A. De Rújula
The total cosmic-ray luminosity of the Galaxy is an important constraint on models of cosmic-ray generation. The diffuse high energy -ray and radio-synchrotron emissions of the…
Is the diffuse gamma background radiation generated by galactic cosmic rays?
Arnon Dar, A. De Rújula
We explore the possibility that the diffuse gamma-ray background radiation (GBR) at high galactic latitudes could be dominated by inverse Compton scattering of cosmic ray (CR) elec…
A Matter-Antimatter Universe?
A. G. Cohen, A. De Rujula, S. L. Glashow
We ask whether the universe can be a patchwork consisting of distinct regions of matter and antimatter. We demonstrate that, after recombination, it is impossible to avoid annihila…
Avatars of a Matter-Antimatter Universe
Alvaro De Rujula
An elegantly symmetric Universe, consisting of large islands of matter and antimatter, is by no means obviously out of the question. I review the observations that lead to the usua…
Whither do the microlensing Brown Dwarfs rove?
A. de Rujula, G. Giudice, S. Mollerach +1
The EROS and MACHO collaborations have reported observations of light curves of stars in the Large Magellanic Cloud that are compatible with gravitational microlensing by interveni…