Search For Grb Neutrino Emission According To The Photospheric Model With The Antares Telescope PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Search For Grb Neutrino Emission According To The Photospheric Model With The Antares Telescope PDF full book. Access full book title Search For Grb Neutrino Emission According To The Photospheric Model With The Antares Telescope.
| Author | : Matteo Sanguineti |
| Publisher | : |
| Total Pages | : 236 |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
Download Search for GRB Neutrino Emission According to the Photospheric Model with the ANTARES Telescope Book in PDF, ePub and Kindle
The possible evidence of neutrino emission in correspondence of a Gamma ray burst (GRB) would gave important informations on the production mechanisms and on the most promising emission models. Among these, one of the most recent and widely discussed is the so-called photospheric model. It can explain some measured features of the gamma ray bursts that are not described by the previous models. The photospheric model predicts a sensible neutrino emission in an energetic range a couple of order of magnitude lower with respect to the classical models. In this thesis a completely innovative method of research has been proposed and dedicated tools have been developed to enhance the ANTARES detector sensitivity in the energetic range predicted by the photospheric model. To this extent, for the first time, the unflitered data registered in ANTARES in correspondence of a gamma ray burst has been used. In addition a dedicated directional trigger and a special reconstruction algorithm optimized at low energies were found very effective. As a result, this analysis has enhanced the sensitivity of the dectector up to a factor 2 for neutino energies between 100 GeV and 1 TeV. This analysis was applied to the search of a possible neutrino emission in correspondance of the GRB130427A and GRB130505A events. No evidence for neutrino emission was found. However an upper limit on the neutrino flux from these GRBs in the energetic range which fats the predictions of the most recent emission models was determined.
| Author | : Oindree Banerjee |
| Publisher | : Oindree Banerjee |
| Total Pages | : 41 |
| Release | : 2020-10-23 |
| Genre | : Science |
| ISBN | : |
Download High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection Book in PDF, ePub and Kindle
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.
| Author | : Vladimir Kulikovskiy |
| Publisher | : Springer |
| Total Pages | : 130 |
| Release | : 2015-06-22 |
| Genre | : Science |
| ISBN | : 3319204122 |
Download Neutrino Astrophysics with the ANTARES Telescope Book in PDF, ePub and Kindle
This thesis is devoted to ANTARES, the first underwater neutrino telescope in the Mediterranean sea. As the main scientific analysis, a search for high-energy neutrino emission from the region of the Fermi bubbles has been performed using data from the ANTARES detector. A method for the background estimation using off-zones has been developed specially for this measurement. A new likelihood for the limits calculation which treats both observations in the on-zone and in the off-zone in the similar way and also includes different systematic uncertainties has been constructed. The analysis of 2008–2011 ANTARES data yielded a 1.2 σ excess of events in the Fermi bubble regions, compatible with the no-signal hypothesis. For the optimistic case of no energy cutoff in the flux, the upper limit is within a factor of three of the prediction of the purely hadronic model based on the measured gamma-ray flux. The sensitivity improves as more data are accumulated (more than 65% gain in the sensitivity is expected once 2012–2016 data are added to the analysis).
| Author | : Tri Laksmana Astraatmadja |
| Publisher | : |
| Total Pages | : 250 |
| Release | : 2013 |
| Genre | : |
| ISBN | : 9789085931461 |
Download Starlight Beneath the Waves Book in PDF, ePub and Kindle
| Author | : Salvatore Galata |
| Publisher | : |
| Total Pages | : 131 |
| Release | : 2012 |
| Genre | : |
| ISBN | : |
Download A Time-dependent Search for Neutrino Emission from Microquasars with the ANTARES Telescope Book in PDF, ePub and Kindle
The ANTARES collaboration has successfully built, deployed and is currently operating an underwater Cherenkov detector dedicated to high energy neutrino astronomy. The primary aim of the experiment is to detect cosmic sources of neutrinos in order to reveal the production sites of cosmic rays. Among the sources likely to be significant sources of neutrinos are those accelerating relativistic jets, like gamma ray bursts, active galactic nuclei and microquasars. Microquasars are binary systems formed by a compact object accreting mass from a companion star. The mass transfer causes the emission of X-rays, whereas the onset of magnetic forces in the accreting plasma can cause the acceleration of relativistic jets, which are observed by radio telescopes via their non-thermal synchrotron emission. In some systems, a correlation between X-ray and radio light curves indicates an interplay between accretion and ejection respectively. Some microquasars are also high energy and very high energy gamma ray emitters. In this thesis, a time dependent search for neutrino emission from microquasars was performed with a multi-messenger approach (photon/neutrino). The data from the X-ray monitors RXTE/ASM and SWIFT/BAT, and the gamma-ray telescope FERMI/LAT were used to select transient events in which the source was supposed to accelerate relativistic jets. The restriction of the analysis to the ejection periods allows a drastic reduction of atmospheric muon and neutrino background, and thus to increase the chances of a discovery. The search was performed with the ANTARES data taken between 2007 and 2010.
| Author | : |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2012 |
| Genre | : |
| ISBN | : |
Download A Search for High-energy Neutrino Emission from Gamma-ray Bursts Book in PDF, ePub and Kindle
A century after their discovery, the origin of cosmic rays remains one of the most enduring mysteries in physics. They can have energies that exceed 1020 eV, a hundred million times as energetic as the most powerful Earth-bound particle accelerators and must therefore be produced in the universe's most violent environments. Direct observation of their origins, however, has proven difficult due to deflection of charged cosmic ray particles in galactic and intergalactic magnetic fields, obscuring their true origins. Astronomy using electrically neutral particles, such as photons and neutrinos, does not, however, share this difficulty. This work presents a search for neutrino emission from one of the primary candidates for the sources of the highest-energy cosmic rays, Gamma-Ray Bursts, using the recently-completed IceCube neutrino telescope located at the South Pole. The null result obtained from this search contradicts well-established predictions for the neutrino flux from Gamma-Ray Bursts if they are the cosmic ray sources, forcing a reevaluation of these theoretical models.
| Author | : Mukharbek Organokov |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2019 |
| Genre | : |
| ISBN | : |
Download ANTARES Search for High-energy Neutrinos from TeV-emitting Blazars, Markarian 421 and 501, in Coïncidence with HAWC Gamma-ray Tiares Book in PDF, ePub and Kindle
Neutrinos are unique messengers for detecting violent phenomena in the Universe. Potential sources of cosmic neutrinos are, for example, Active Galactic Nuclei (AGNs) or Gamma-Ray Bursts (GRBs). In the case of hadronic cosmic rays acceleration, the production of neutrinos is possibly accompanied by high-energy gamma-ray emissions. The search for coincidences between high-energy neutrinos detected by the ANTARES neutrino telescope and gamma-rays detected by the HAWC gamma-ray observatory is presented. Searching in a particular time window significantly reduces the background noise in the neutrino data and thus increases the discovery potential. In this thesis, the results of a search for neutrinos detected in correlation with a gamma-ray signal from two particular AGNs, Markarian 421 and Markarian 501, are presented. As the blazars closest to Earth, they are excellent sources for testing the blazar-neutrino connection scenario, especially during the increase of their activities (flares) in which the search for neutrinos may have a higher detection probability.
| Author | : Julia Schmid |
| Publisher | : |
| Total Pages | : |
| Release | : 2015 |
| Genre | : |
| ISBN | : |
Download Searches for High-Energy Neutrinos from Gamma-Ray Bursts with the ANTARES Neutrino Telescope Book in PDF, ePub and Kindle
| Author | : Silvia Celli |
| Publisher | : Springer Nature |
| Total Pages | : 264 |
| Release | : 2019-12-17 |
| Genre | : Science |
| ISBN | : 3030331245 |
Download Gamma-ray and Neutrino Signatures of Galactic Cosmic-ray Accelerators Book in PDF, ePub and Kindle
This book addresses three “hot” topics concerning the general problem of the origin of Galactic cosmic rays, namely (1) the acceleration, propagation, and radiation of particles in supernova remnants; (2) very high energy neutrinos from the Galactic Center; and (3) the potential held by the next-generation gamma-ray and neutrino detectors CTA and KM3NeT for studying extended non-thermal sources in the Galaxy. The topics are intrinsically connected to determining the nature (“hadronic or leptonic?”) of gamma-ray emissions from young and middle-aged supernova remnants and the search for cosmic-ray PeVatrons. The results and conclusions provided here are based on extensive analytical and numerical simulations, which are formulated and presented in a straightforward format that can be readily used in the interpretations of gamma-ray and neutrino observations, as well as for confident predictions for future measurements.
| Author | : Thomas K Gaisser |
| Publisher | : World Scientific |
| Total Pages | : 251 |
| Release | : 2017-03-20 |
| Genre | : Science |
| ISBN | : 9814759422 |
Download Neutrino Astronomy: Current Status, Future Prospects Book in PDF, ePub and Kindle
This review volume is motivated by the recent discovery of high-energy astrophysical neutrinos by IceCube. The aim of the book is to bring together chapters on the status of current and future neutrino observatories with chapters on the implications and possible interpretations of the present observations and their upper limits. Each chapter is a mini-review of one aspect of the subject by leading experts. Taken together, the chapters constitute an up-to-date review of high-energy astrophysical neutrinos and their potential sources.
