GRB and SN remnants The global energetics of supernovae and gamma - ray bursts has direct implications for the extra energetic supernova remnants . Recently , several suggestions were made that these may be remnants of gamma - ray burst ...

Author: Space Telescope Science Institute (U.S.). Symposium

Publisher: Cambridge University Press

ISBN: 0521791413

Category: Science

Page: 390

View: 123

Download »

Since the dramatic discovery that the supernova SN1998bw coincided in position and time with a gamma-ray burst, the possibility was raised that these two types of spectacular explosions are related. This timely volume presents especially written articles by a host of world experts who gathered together for an international conference at the Space Telescope Science Institute. This was the first meeting in which the communities of supernova researchers and gamma-ray burst researchers were brought together to share ideas. The contributions review the mechanisms for these explosive events, the possible connections between them, and their relevance for cosmology. Both observations and theoretical developments are covered. This book is an invaluable source of information for both active researchers and graduate students in this exciting area of research.

1988) included the identi®cation of GRBs in the classical way (NaI detectors), the localization of GRBs in soft X-rays (2±20keV) with an accuracy better than 10arcmin and at UV wavelengths with a UV camera which was able to localize ...

Author: Gilbert Vedrenne

Publisher: Springer Science & Business Media

ISBN: 9783540390886

Category: Science

Page: 580

View: 880

Download »

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.

Relativistic motion of the y - ray source region , provided it is directed away from the neutron star , easily solves ... Krolic & Pier : Bulk relativistic motion in GRBs 103 Severe New Limits On Extragalactic Models of Gamma-Ray Bursts.

Author: Cheng Ho

Publisher: Cambridge University Press

ISBN: 0521414490

Category: Science

Page: 532

View: 125

Download »

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.

Some Recent , Interesting Observations of Gamma - Ray Bursts Kevin Hurley UC Berkeley Space Sciences Laboratory , Berkeley CA 94720-7450 Abstract . I review some of the observations of time histories , energy spectra , and the ...

Author: Enrico Costa

Publisher: Springer Science & Business Media

ISBN: 3540427716

Category: Science

Page: 484

View: 191

Download »

The information received from BeppoSAX, Chandra and other instruments in the last two years has more than doubled the number of samples of Gamma-Ray Bursts localized and followed up for afterglow search. This has also increased the interest of astronomers in GRBs. This book reviews the research of the last two years and covers the global properties of GRBs, GRB afterglows, GRB host galaxies, cosmology using GRBs, and theories for GRBs and their afterglows. Theoretical and observational aspects are presented as well as tools for the analysis of the data.

Through three decades of evermore complex instrumentation, many of the mysteries of GRBs have been solved. We now know that GRBs are associated with host galaxies that are extremely far away (including the furthest object ever observed: ...

Author: Chryssa Kouveliotou

Publisher: Cambridge University Press

ISBN: 9780521662093

Category: Nature

Page: 361

View: 516

Download »

A comprehensive graduate-level review of GRB astrophysics and its history, featuring the latest research by an international team of experts.

Observational implications of gamma-ray burst afterglow jet simulations and numerical light curve calculations. ApJ, 751(June), 155. van Eerten, H. J., and Wijers, R. A. M. J. 2009. Gamma-ray burst afterglow scaling coefficients for ...

Author: Bing Zhang

Publisher: Cambridge University Press

ISBN: 9781108584609

Category: Science

Page:

View: 313

Download »

Gamma-ray bursts (GRBs) are the most luminous explosions in the universe, which within seconds release energy comparable to what the Sun releases in its entire lifetime. The field of GRBs has developed rapidly and matured over the past decades. Written by a leading researcher, this text presents a thorough treatment of every aspect of the physics of GRBs. It starts with an overview of the field and an introduction to GRB phenomenology. After laying out the basics of relativity, relativistic shocks, and leptonic and hadronic radiation processes, the volume covers all topics related to GRBs, including a general theoretical framework, afterglow and prompt emission models, progenitor, central engine, multi-messenger aspects (cosmic rays, neutrinos, and gravitational waves), cosmological connections, and broader impacts on fundamental physics and astrobiology. It is suitable for advanced undergraduates, graduate students, and experienced researchers in the field of GRBs and high-energy astrophysics in general.

Articles from the Great Debate summarizing the case for the Galactic and extragalactic distance scales: “The Distance Scale to Gamma-Ray Bursts,” D. Q. Lamb (1995; Publications of the Astronomical Society of the Pacific, Vol. 107, p.

Author: Joshua S. Bloom

Publisher: Princeton University Press

ISBN: 9781400837007

Category: Science

Page: 280

View: 861

Download »

Gamma-ray bursts are the brightest--and, until recently, among the least understood--cosmic events in the universe. Discovered by chance during the cold war, these evanescent high-energy explosions confounded astronomers for decades. But a rapid series of startling breakthroughs beginning in 1997 revealed that the majority of gamma-ray bursts are caused by the explosions of young and massive stars in the vast star-forming cauldrons of distant galaxies. New findings also point to very different origins for some events, serving to complicate but enrich our understanding of the exotic and violent universe. What Are Gamma-Ray Bursts? is a succinct introduction to this fast-growing subject, written by an astrophysicist who is at the forefront of today's research into these incredible cosmic phenomena. Joshua Bloom gives readers a concise and accessible overview of gamma-ray bursts and the theoretical framework that physicists have developed to make sense of complex observations across the electromagnetic spectrum. He traces the history of remarkable discoveries that led to our current understanding of gamma-ray bursts, and reveals the decisive role these phenomena could play in the grand pursuits of twenty-first century astrophysics, from studying gravity waves and unveiling the growth of stars and galaxies after the big bang to surmising the ultimate fate of the universe itself. What Are Gamma-Ray Bursts? is an essential primer to this exciting frontier of scientific inquiry, and a must-read for anyone seeking to keep pace with cutting-edge developments in physics today.

KONUS EXPERIMENT DATA Preface Shortly after the first announcement of the discovery of gamma-ray bursts in 1973, a conference was held at the Los Alamos National Laboratories in New Mexico to discuss the current results and plan future ...

Author: E.P. Mazets

Publisher: Springer Science & Business Media

ISBN: 9789400979604

Category: Science

Page: 144

View: 758

Download »

continues to be extremely rewarding. Experiments on future missions, such as the two 1981 Veneras, Gamma Ray Observatory, and the International Solar Polar Mission, will undoubtedly provide new and unexpected discoveries, but the work of the Leningrad group is likely to remain an important contribution to the field for some time to come. c.E.S.R. KEVIN HURLEY Toulouse, France June 9, 1981 CATALOG OF COSMIC GAMMA-RAY BURSTS FROM THE KONUS EXPERIMENT DATA Parts I and II E. P. MAZETS, S. V. GOLENETSKII, V. N. IL'INSKII, V. N. PANOV, R. L. APTEKAR, YU. A. GUR'YAN, M. P. PROSKURA, 1. A. SOKOLOV, Z. Y A. SOKOLOV A, and T. V. KHARITONOV A A. F. Ioffe Physical-Technical Institute, U.S.S.R. Academy of Sciences, Leningrad, U.S.S.R. and A. V. DYATCHKOV and N. G. KHAVENSON Institute of Cosmic Research, U.S.S.R. Academy of Sciences, Moscow, U.S.S.R. (Received 2 July, 1980) Abstract. Data are presented on the temporal structure, fluxes, energy spectra and coordinates of the sources of gamma-ray bursts detected in the KONUS experiment on Venera 1 I and Venera 12 space probes in the period September 1978 to May 1979. The statistical distributions of gamma bursts in duration, intensity, and peak power, as well as the distribution of the burst sources over the celestial sphere presented are based on the updated KONUS information obtained until February 1980.

What causes gamma ray bursts? What makes up the missing mass of the universe? What9s in those black holes, anyway? And maybe the biggest question of all: How in the wide world can you add $3 billion in market capitalization simply by ...

Author: Joshua S. Bloom

Publisher: Universal-Publishers

ISBN: 9781581121698

Category: Science

Page: 200

View: 360

Download »

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.

Detection of a γ-ray burst of very long duration and very high energy. nat, 374:94, March 1995. 2. P. M ́esz ́aros. Gamma-ray bursts. Reports on Progress in Physics, 69:2259–2321, August 2006. M. Bustamante. Ultra-high-energy neutrinos ...

Author: Oindree Banerjee

Publisher: Oindree Banerjee

ISBN: 9798553433314

Category: Science

Page: 41

View: 954

Download »

Abstract Gamma-ray bursts (GRBs) are the most luminous transient events in the observed Universe. However, there is no direct observational evidence for what exactly drives a GRB. The most widely accepted model for these cosmic events is the fireball model where it is thought that a substantial fraction of the kinetic energy of the source is converted to gamma-radiation by shock accelerated electrons emitting synchrotron and inverse-Compton radiation. The acceleration of protons in the gamma-ray emitting region of the GRB has been hypothesized as well. In this hadronic acceleration model, it is predicted that protons may interact with gamma-ray photons to produce a burst of neutrinos at energy ∼10^14 eV during prompt emission and energy ∼10^18 eV during afterglow emission. Several experimental searches for these high energy neutrinos have been conducted and no GRB neutrinos have yet been found. The analytical prediction for neutrino flux has been replaced with a more thorough numerical prediction for neutrino flux. The neutron model of GRBs, where only neutrons can escape the GRB and reach Earth as cosmic rays, has been ruled out by the experimental work of IceCube and ANTARES. Upgraded versions of current experiments such as IceCube, ANTARES, ANITA and ARA, as well as new experiments such as KM3NeT, are preparing to probe and further constrain the fireball paradigm of GRB neutrino production. This review includes: Introduction Early theoretical predictions for neutrino fluences due to GRBs Overview of high energy neutrino experiments and related physics Experimental searches for high energy neutrinos from GRBs Prospects for detection of high energy neutrinos from GRBs High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection was originally written as a review submitted for my Ph.D. candidacy paper on Nov 23, 2015. It has been edited for a "Short Read" on Amazon Kindle Direct Publishing in Oct 2020. It is a public domain work. Special thanks to the Connolly group at Ohio State University (OSU) and the physics and astronomy departments at OSU. Moreover, I am grateful for the contribution of each and every scientist and author listed in the "References" section of this review. This review would not be possible without their published science and hard work. Please let me know if you find any mistakes or problems, I will fix it. My email is [email protected] I am happy for this to be a living document. I am anxious to improve it but feel that it needs to be out at this point before that can happen.