Conclusions: What Makes Gamma-ray Bursts?
Accretion Models of Gamma‐Ray Bursts
... By and large, for most choices of r out and m d , the flow is either a CDAF at all radii or an NDAF at all radii. Since the two kinds of flow are very different from each other, there is a rather large difference in ...
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Short-Hard Gamma-Ray Bursts
... first conclusions from these observations were that SHBs are cosmological, but unlike long GRBs, their progenitors are not massive stars, thereby confirming that these two observationally defined classes are ...
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Short gamma-ray bursts: A review
... 11. Conclusions and future perspectives A decade of systematic short GRB observations of their prompt emission, afterglows and host galaxies provided an impressive ad- vance in the knowledge of these sources and ...
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Peak Energy Correlations for Gamma Ray Bursts
... DOI: 10.4236/jamp.2017.58124 1516 Journal of Applied Mathematics and Physics cosmological parameters [12]-[18], and also as tools that might shed light on the physics of GRBs [19] [20]. This paper provides a review of ...
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The environments of the most energetic Gamma Ray bursts
... In practice these scenarios are not so different; a star with a weak stellar wind in the latter stages of life will influence its local environ- ment to a lesser radial extent than a star with a strong stellar wind, so ...
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CiteSeerX — Central engines for gamma-ray bursts
... soft gamma-ray bursts (GRBs) are briefly reviewed with emphasis on the collapsar ...GRBs. What we have called “GRBs” may actually be a diverse set of phenomena with a key parameter being the ...
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Close binary progenitors of gamma-ray bursts
... main bursts to the magnetically driven BH jets unleashed in the space cleared up by the ...field, makes the sideways expansion of the jet cocoon less ...
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Constraining the progenitors of short gamma ray bursts
... 6 Conclusions The primary focus of this thesis has been the identification and study of short γ- ray bursts (SGRBs), looking principally at properties of their lightcurves and host galaxies (or lack ...
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Toward an Understanding of the Progenitors of Gamma Ray Bursts
... Chapter 4 , p. 43 4.3. DISCUSSION the total magnitude of all known host galaxies to date, we note that the optical transients (except for GRB 990123) lie well within the effective half-light radius. Copious star ...
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On the Origin of the Highest Redshift Gamma-Ray Bursts
... hence, makes it difficult to predict a reliable rate from population synthesis studies ...short bursts, this indi- cates that the odds are roughly 10 to 1 that GRB 080913 and 090423 were long-duration ...
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The Energetics and Environments of Swift Gamma Ray Bursts
... In Chapter 6, I turn my attention from individual events to consider properties of the entire population of Swift optical afterglows. I construct a sample of 29 Swift GRB afterglows with P60 coverage beginning less than ...
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Polarimetry and Photometry of Gamma-Ray Bursts with RINGO2
... In this paper we present the complete catalog of photom- etry and polarimetry of GRBs observed with the RINGO2 imaging polarimeter on LT. Of the 19 optical afterglows ob- served, 9 were bright enough to perform ...
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Prompt observations of Gamma-Ray Bursts with Swift.
... This makes a structured jet a more favourable model to a wide jet, which cannot account for the shallowness of the decay rate of XRF 050406 without incorporating further components into the model, such as energy ...
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Gravitational waves and short gamma ray bursts
... understand what I am doing and why I am doing it; his office door was always open when I had questions and every time I would not understand things, and more recently he spent an awful amount of time reading this ...
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X-ray flares and the duration of engine activity in gamma-ray bursts
... result makes the studies of possible mechanisms of reactivation of the GRB engine especially ...long bursts, while Dai et ...short bursts, and with similar characteristics in both cases, is ...
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Light from the Cosmic Frontier: Gamma-Ray Bursts
... Thus, GRBs provide a unique, and above z ≥ 13 per- haps the only, way of pin-pointing the vast bulk of star-forming galaxies as well as their individual build- ing blocks. Furthermore, the faintness of even the brightest ...
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Magnetic Fields in Gamma-Ray Bursts: A Short Overview
... I begin this short review with a brief discussion of the fireball model focusing on issues most directly relevant to magnetic fields. I refer the reader to [20] for a more general and extended review and to [21] for a ...
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Are Swift gamma-ray bursts consistent with the Ghirlanda relation?
... of gamma–ray bursts (GRBs), namely the spectral peak energy, the total radiated energy, and the afterglow break time, have been discovered with pre-Swift ...Swift bursts to the Ghirlanda and ...
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A Survey of the Host Galaxies of Gamma-Ray Bursts 1
... B −1 , the highest value of any known GRB host galaxy [7]. Djorgovski et al. [3] suggested that the host is a set of interacting galaxies. If this is the case then the lack of tidal features suggests that the system has ...
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Gamma-ray bursts at high and very high energies
... 6. Conclusions Since its launch in 2008, the Fermi Gamma-ray Space Telescope has made important breakthroughs in the understanding of the GRB ...
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