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Antares Search For High Energy Neutrinos From Tev Emitting Blazars Markarian 421 And 501 In Coincidence With Hawc Gamma Ray Tiares
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Book Synopsis ANTARES Search for High-energy Neutrinos from TeV-emitting Blazars, Markarian 421 and 501, in Coïncidence with HAWC Gamma-ray Tiares by : Mukharbek Organokov
Download or read book ANTARES Search for High-energy Neutrinos from TeV-emitting Blazars, Markarian 421 and 501, in Coïncidence with HAWC Gamma-ray Tiares written by Mukharbek Organokov and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Time Sensitive Searches for Electromagnetic Counterparts to High Energy Neutrinos by : Colin Turley
Download or read book Time Sensitive Searches for Electromagnetic Counterparts to High Energy Neutrinos written by Colin Turley and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We present the results of multiple electromagnetic searches for counterparts of high energy neutrinos detected by the IceCube and ANTARES neutrino observatories. A long standing problem in astrophysics is the cosmic ray origin problem. Due to their electric charge, cosmic rays deflect in the interstellar and intergalactic magnetic fields, obfuscating their origins. Similarly, the origins of high energy neutrinos are largely unknown, with only one positively identified source, the blazar TXS 0506+056.Multimessenger astrophysics offers a method to discover the sources of high energy cosmic rays and neutrinos. The mechanisms that produce cosmic rays and neutrinos are very likely to also produce high energy -rays. Coincident searches for -rays and neutrinos have the potential to reveal the sources of high energy cosmic rays and neutrinos. Such searches have already borne fruit, with the coincident detection of TXS 0506+056.This thesis details several searches for + transients, their results, and what they may indicate for future searches. The first search detailed is a blazar flare analysis, looking for neutrinos coincident with TeV -rays from several bright northern blazars. This search found a statistical excess of neutrinos during blazar flares, but indicated that the blazar Markarian 421 is a strong candidate for either detecting or limiting neutrino emission from blazars. The second and third projects utilized the Fermi-LAT -ray data to search for electromagnetic counterparts to high energy neutrinos. These searches both looked for a population of subthreshold + transients, and for an excess of individually high significance + transients. Using neutrino data from the IceCube 40 and 59 string datasets, we found no evidence of a subthreshold population of + transients, and no individually high significance events. We did observe a trend for IC59 neutrinos to arrive in regions of the sky that were TeV bright (p=7%) and would like to see if this behavior persists in other neutrino datasets. Our search with archival ANTARES data likewise found no subthreshold population of + transients. In parallel with these searches, we also performed X-ray followup to IceCube detections of likely cosmic neutrinos using the Swift satellite. These searches are important to the field of multimessenger astrophysics as they are what led to the detection of the neutrino emitting blazar TXS 0506+056. Targeted coincidence searches, especially time sensitive searches, are essential to finding more neutrino sources and identifying the sources of high-energy cosmic rays.
Book Synopsis High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection by : Oindree Banerjee
Download or read book High Energy Neutrinos from Gamma Ray Bursts: Theoretical Predictions, Experimental Searches, and Prospects for Detection written by Oindree Banerjee and published by Oindree Banerjee. This book was released on 2020-10-23 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Neutrino Astrophysics with the ANTARES Telescope by : Vladimir Kulikovskiy
Download or read book Neutrino Astrophysics with the ANTARES Telescope written by Vladimir Kulikovskiy and published by Springer. This book was released on 2015-06-22 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).
Book Synopsis A Time-dependent Search for Neutrino Emission from Microquasars with the ANTARES Telescope by : Salvatore Galata
Download or read book A Time-dependent Search for Neutrino Emission from Microquasars with the ANTARES Telescope written by Salvatore Galata and published by . This book was released on 2012 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis High Energy Astrophysical Neutrinos by : Debanjan Bose
Download or read book High Energy Astrophysical Neutrinos written by Debanjan Bose and published by Springer Nature. This book was released on 2021-12-07 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a pedagogical introduction to the likely sources of these neutrinos, their propagation and detection mechanisms. Detection of high energy neutrinos of extragalactic origin has led to an interdisciplinary field of research, involving astronomy, astrophysics and particle physics. An extensive review of various detectors and the observations is provided that consolidates the latest findings. Above a few tens of TeVs, neutrinos are conceived as more reliable messengers for astronomy than photons as these photons get absorbed in the background photon field. Determining the neutrino spectrum not only helps in exploring astrophysical objects like AGN, GRB, etc. but also allows us to study particle physics at unprecedented energies. This introductory book is intended to help advanced undergraduate and graduate students to get into the subject with ease, and it simultaneously caters to practicing theoretical or experimental physicists as a reference book.
Book Synopsis Searches for High-Energy Neutrinos from Gamma-Ray Bursts with the ANTARES Neutrino Telescope by : Julia Schmid
Download or read book Searches for High-Energy Neutrinos from Gamma-Ray Bursts with the ANTARES Neutrino Telescope written by Julia Schmid and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Populations of Unresolved Sources of High Energy Neutrinos with the ANTARES Neutrino Telescope by : Rodrigo Gracia Ruiz
Download or read book Search for Populations of Unresolved Sources of High Energy Neutrinos with the ANTARES Neutrino Telescope written by Rodrigo Gracia Ruiz and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Astroparticle physics is a branch of physics related to the study of the most violent astrophysical phenomena in the Universe such as Active Galactic Nuclei (AGN) or Gamma Ray Bursts (GRB), which emit different cosmic messengers such as neutrinos, gravitational waves, electromagnetic radiation and charged particles. A proper understanding of these objects involves then a multi-messenger approach, in which neutrinos play a fundamental role. Thanks to their physical properties, neutrinos allow us to explore the physical phenomena produced in the densest astrophysical environments and to observe the Universe at large distances. This thesis is divided into three main parts. The first part is composed by three chapters dedicated to the scientific context in which the rest of the thesis is developed. In the first chapter, the scientific motivations for the search of high energy cosmic neutrinos are described. In chapter 2, a description of the main properties of AGN are given. These sources have been chosen as "test" objects in the research of potential neutrino sources. Finally, the third chapter is dedicated to the detection principle and main results of the currently operating neutrino telescopes. The second part of the thesis is dedicated to the technical description of the ANTARES neutrino telescope, and composed of two chapters. Chapter 4 describes the ANTARES telescope, the data acquisition and the data selection. In the last part of this chapter, the work made to measure the efficiency loss of the photomultipliers (PMTs) by using the baseline rates is described. Chapter 5 is dedicated to the Monte Carlo simulations. The different simulation packages used by the ANTARES collaboration are presented, and the different simulated processes are described. A contribution to the official package for the generation of neutrino interactions, relative to the implementation of the propagation and decay of the tau leptons, is described. The third part is dedicated to the search of potential cosmic signals in the events recorded by ANTARES. It comprises four chapters. Chapter 6 is a description of the signal search method, chapter 7 presents the principles of an analysis based on a 2 point correlation function that will be applied in chapter 9 with the purpose of searching for an excess of cosmic neutrinos characterized by an expected spatial distribution which is different from that of atmospheric neutrinos. This method is well suited for the detection of the collective effect produced by populations of weak point-like sources. Chapter 8 describes the simulation of the neutrino flux emitted by AGN. By using the luminosity function for different AGN classes obtained from X-ray observations, and the ANTARES acceptance, neutrinos coming from AGN populations are simulated as a function of two parameters which are related to the number of sources in the population, and to their luminosities. The analysis of these populations with the 2 point correlation function is detailed in chapter 9.
Book Synopsis High Energy Neutrino Astrophysics - Proceedings Of The Workshop by : V J Stenger
Download or read book High Energy Neutrino Astrophysics - Proceedings Of The Workshop written by V J Stenger and published by World Scientific. This book was released on 1992-09-30 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of this workshop consideres the prospects for opening up a new window on the universe with the generation of High Energy Neutrino telescopes now under construction or being planned. Potential sources of high energy neutrinos such as binary pulsars, supernovae, and active galactic nuclei are discussed. In particular, the recent model of Stecker and collaborators, in which neutrinos with energies as high as 1000 TeV are produced in measurable quantities in the cores of quasars and other active galaxies is critically reviewed.
Book Synopsis Neutrinos and Explosive Events in the Universe by : Maurice M. Shapiro
Download or read book Neutrinos and Explosive Events in the Universe written by Maurice M. Shapiro and published by Springer Science & Business Media. This book was released on 2006-01-26 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: “Neutrinos and Explosive Events in the Universe” brought together experts from diverse disciplines to offer a detailed view of the exciting new work in this part of High Energy Astrophysics. Sponsored by NATO as an Advanced Study Institute, and coordinated under the auspices of the International School of Cosmic Ray Astrophysics (14th biennial course), the ASI featured a full program of lectures and discussion in the ambiance of the Ettore Majorana Centre in Erice, Italy, including visits to the local Dirac and Chalonge museum collections as well as a view of the cultural heritage of southern Sicily. Enri- ment presentations on results from the Spitzer Infrared Space Telescope and the Origin of Complexity complemented the program. This course was the best attended in the almost 30 year history of the School with 121 participants from 22 countries. The program provided a rich ex- rience, both introductory and advanced, to fascinating areas of observational Astrophysics Neutrino Astronomy, High Energy Gamma Ray Astronomy, P- ticle Astrophysics and the objects most likely responsible for the signals - plosions and related phenomena, ranging from Supernovae to Black Holes to the Big Bang. Contained in this NATO Science Series volume is a summative formulation of the physics and astrophysics of this newly emerging research area that already has been, and will continue to be, an important contributor to understanding our high energy universe.
Book Synopsis Neutrino Astronomy: Current Status, Future Prospects by : Thomas K Gaisser
Download or read book Neutrino Astronomy: Current Status, Future Prospects written by Thomas K Gaisser and published by World Scientific. This book was released on 2017-03-20 with total page 251 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis A Search for Ultra-High Energy Neutrinos and Cosmic-Rays with Anita-2 by : Springer
Download or read book A Search for Ultra-High Energy Neutrinos and Cosmic-Rays with Anita-2 written by Springer and published by . This book was released on 2012-08-31 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for High-energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES, IceCube, and the Pierre Auger Observatory by :
Download or read book Search for High-energy Neutrinos from Binary Neutron Star Merger GW170817 with ANTARES, IceCube, and the Pierre Auger Observatory written by and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for High Energy Neutrino Emission from Gamma-ray Bursts with the Antarctic Muon and Neutrino Detector Array (AMANDA) by : Ryan Carlton Bay
Download or read book Search for High Energy Neutrino Emission from Gamma-ray Bursts with the Antarctic Muon and Neutrino Detector Array (AMANDA) written by Ryan Carlton Bay and published by . This book was released on 2000 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultra-high Energy Signals from Hercules X-1 by :
Download or read book Ultra-high Energy Signals from Hercules X-1 written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The expectation that high-energy neutrinos are emitted from astrophysical objects depends strongly on the observation of those objects in gamma-rays, especially at TeV and PeV energies. A search for bursts of gamma-ray events from Hercules X-1 at energies above 50 TeV yielded two significant bursts, both occurring on UT 24 July 1986. The events were pulsed with a period of 1.23568 s, significantly different from estimates of the pulsar period at that time. The probability that the signal is a random background fluctuation is about 2 x 10/sup /minus/5/, not including the fact that there were two other independent observations of the source at nearly the same time. The muon content of the burst events is anomalous when compared with expectations of gamma-ray showers, perhaps signalling the onset of new physics at these energies. 9 refs., 4 figs., 1 tab.
Book Synopsis Search for High Energy Neutrinos from the Galactic Plane with the ANTARES Neutrino Telescope by : Timothée Grégoire
Download or read book Search for High Energy Neutrinos from the Galactic Plane with the ANTARES Neutrino Telescope written by Timothée Grégoire and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Search for Extended Galactic Sources of Astrophysical Neutrinos with the Icecube Neutrino Observatory by : Devyn Rysewyk Cantu
Download or read book Search for Extended Galactic Sources of Astrophysical Neutrinos with the Icecube Neutrino Observatory written by Devyn Rysewyk Cantu and published by . This book was released on 2021 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: The IceCube Neutrino Observatory0́4a cubic-kilometer of instrumented ice at the geographic South Pole0́4has been observing a high-energy astrophysical neutrino flux since 2010. However, a steady source of these neutrinos is yet to be identified. Possible candidates contributing to the high-energy neutrino flux include extended sources (spanning a few degrees) originating from within the Milky Way. Such sources have been discovered in the very-high-energy gamma-ray sky along the Galactic plane with experiments such as HAWC and H.E.S.S. If the emission from these extended sources is of a hadronic origin, an associated flux of neutrinos from the decay of pions is also expected to be observed. Therefore, an observation of neutrino emission from these extended gamma-ray sources would provide direct insight into cosmic-ray acceleration in the galaxy. Two approaches to performing dedicated searches for extended sources along the Galactic plane with nine years of IceCube data will be discussed. With these two approaches, no significant sources were found and the results are consistent with background.While IceCube has revealed the existence of sources of high-energy astrophysical neutrinos, the identification of the sources is challenging because astrophysical neutrinos are difficult to separate from the background of atmospheric neutrinos produced in cosmic-ray-induced particle cascades in the atmosphere. The efficient detection of air showers in coincidence with detected neutrinos can greatly reduce those backgrounds and increase the sensitivity of neutrino telescopes. Imaging Air Cherenkov Telescopes (IACTs) are sensitive to gamma-ray-induced (and cosmic-ray-induced) air showers in the 50 GeV to 50 TeV range, and can therefore be used as background-identifiers for neutrino observatories. The feasibility of an array of small scale, wide field-of-view, cost-effective IACTs as an air shower veto for neutrino astronomy will be discussed. A surface array of 250 to 750 telescopes would significantly improve the performance of a cubic kilometer-scale detector like IceCube, at a cost of a few percent of the original investment. The number of telescopes in the array can be optimized based on astronomical and geometrical considerations.
