Classification of Gamma-ray Bursts and Prospects for Multi-messenger Astrophysics
Author : Lána Salmon
Publisher :
Page : 0 pages
File Size : 19,48 MB
Release : 2022
Category : Gamma ray astronomy
ISBN :
Author : Lána Salmon
Publisher :
Page : 0 pages
File Size : 19,48 MB
Release : 2022
Category : Gamma ray astronomy
ISBN :
Author : James Delaunay
Publisher :
Page : pages
File Size : 24,50 MB
Release : 2021
Category :
ISBN :
Gamma-ray Bursts (GRBs) are incredibly energetic, brief flashes of gamma-rays originating from some of the most violent explosions in the universe. The progenitors of the two main classes GRBs, long and short, are thought to be the core collapse of massive stars for long GRBs and the merger of compact objects, like neutron stars and black holes for short GRBs. Though the emission for either class is still not perfectly understood, long GRBs are more well-understood due to their larger energy output and brighter afterglows. The first ever high-energy multi-messenger detection occurred on August 17th, 2017 when a short GRB was observed in coincidence with gravitational waves originating from two neutron stars merging into each other in a galaxy over one hundred million light-years away. This observation had wide spread scientific implications, including the confirmation as compact object mergers as short GRB progenitors, but one surprising result was the lowest measured luminosity of a short GRB by more than 2 orders of magnitude. The revelation of this new population of low-luminosity short GRBs motivates senitive GRB searches to find and study other members of the population. This dissertation focuses on work I have done using data from Swift's Burst Alert Telescope (BAT) as a tool for multi-messenger astrophysics. This includes a targeted analysis using existing tools to search for counterparts to astrophysical events of interest, and a new likelihood-based method of analyzing BAT data I developed to make a more sensitive search for GRBs. This new likelihood-based search is capable of increasing the detection horizon of a GRB 170817A-like burst by [almost equal to]50% compared to the onboard analysis. I will also discuss the results of these searches, including the arcminute-scale localization of 8 GRBs that were not detected onboard BAT.
Author : Bing Zhang
Publisher : Cambridge University Press
Page : 617 pages
File Size : 25,58 MB
Release : 2019
Category : History
ISBN : 1107027616
A complete text on the physics of gamma-ray bursts, the most brilliant explosions since the Big Bang.
Author : Gilbert Vedrenne
Publisher : Springer Science & Business Media
Page : 613 pages
File Size : 41,40 MB
Release : 2009-03-20
Category : Science
ISBN : 354039088X
Since their discovery was first announced in 1973, gamma-ray bursts (GRBs) have been among the most fascination objects in the universe. While the initial mystery has gone, the fascination continues, sustained by the close connection linking GRBs with some of the most fundamental topics in modern astrophysics and cosmology. Both authors have been active in GRB observations for over two decades and have produced an outstanding account on both the history and the perspectives of GRB research.
Author : Javier Gorosabel
Publisher :
Page : 0 pages
File Size : 46,49 MB
Release : 2013
Category : Science
ISBN : 9782759810024
Gamma-ray bursts (GRB) are amongst the most energetic phenomena in the Universe. In 1997 (more than 15 years ago), BeppoSAX allowed the detection of the first GRB X-ray afterglow, leading to the detection of afterglows at other wavelengths (optical, radio) in the following years, probing the cosmological distance scale. There are still many other open issues which still need to be addressed, regarding both theoretical and observational aspects: prompt emission and afterglow physics, progenitors (including Pop III stars), host galaxies, multi-messenger information, etc.
Author : Cheng Ho
Publisher : Cambridge University Press
Page : 532 pages
File Size : 14,81 MB
Release : 1992-03-12
Category : Nature
ISBN : 9780521414494
Summarizes the current understanding of Astronomical gamma-ray bursts, short-lived flashes of high-energy radiation, which have eluded even a basic explanation for over twenty years, and describes directions for future research.
Author : Josep M. Paredes
Publisher : Springer Science & Business Media
Page : 496 pages
File Size : 34,47 MB
Release : 2007-11-12
Category : Science
ISBN : 140206117X
This book provides a theoretical and observational overview of the state of the art of gamma-ray astrophysics, and their impact and connection with the physics of cosmic rays and neutrinos. With the aim of shedding new and fresh light on the problem of the nature of the gamma-ray sources, particularly those yet unidentified, this book summarizes contributions to a workshop that continues today.
Author : Magnus Axelsson
Publisher : American Institute of Physics
Page : 182 pages
File Size : 40,1 MB
Release : 2007-05-18
Category : Science
ISBN : 9780735404137
This volume contains the proceedings from a symposium on gamma-ray bursts (GRBs) held in Stockholm, Sweden, in September 2006. All papers have been peer reviewed. The gamma-ray Large Area Space Telescope (GLAST) is an international mission dedicated to observations of high-energy gamma-rays and is planned to be launched by the end of 2007.
Author : Chryssa Kouveliotou
Publisher : Cambridge University Press
Page : 361 pages
File Size : 40,6 MB
Release : 2012-11-22
Category : Nature
ISBN : 0521662095
A comprehensive graduate-level review of GRB astrophysics and its history, featuring the latest research by an international team of experts.
Author : Joshua S. Bloom
Publisher : Universal-Publishers
Page : 198 pages
File Size : 47,20 MB
Release : 2002
Category : Science
ISBN : 1581121695
The various possibilities for the origin ("progenitors") of gamma-ray bursts (GRBs) manifest in differing observable properties. Through deep spectroscopic and high-resolution imaging observations of some GRB hosts, I demonstrate that well-localized long-duration GRBs are connected with otherwise normal star-forming galaxies at moderate redshifts of order unity. Using high-mass binary stellar population synthesis models, I quantify the expected spatial extent around galaxies of coalescing neutron stars, one of the leading contenders for GRB progenitors. I then test this scenario by examining the offset distribution of GRBs about their apparent hosts making extensive use of ground-based optical data from Keck and Palomar and space-based imaging from the Hubble Space Telescope. The offset distribution appears to be inconsistent with the coalescing neutron star binary hypothesis (and, similarly, black-hole--neutron star coalescences); instead, the distribution is statistically consistent with a population of progenitors that closely traces the ultra-violet light of galaxies. This is naturally explained by bursts which originate from the collapse of massive stars ``collapsars''). This claim is further supported by the unambiguous detections of intermediate-time (approximately three weeks after the bursts) emission ``bumps'' which appear substantially more red than the afterglows themselves. I claim that these bumps could originate from supernovae that occur at approximately the same time as the associated GRB; if true, GRB 980326 and GRB 011121 provide strong observational evidence connecting cosmological GRBs to high-redshift supernovae and implicate massive stars as the progenitors of at least some long-duration GRBs.