Antimatter Gravity and the Universe
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Active Galactic Nuclei: a Brief Introduction
Active Galactic Nuclei: a brief introduction Manel Errando Washington University in St. Louis The discovery of quasars 3C 273: The first AGN z=0.158 2 <latexit sha1_base64="4D0JDPO4VKf1BWj0/SwyHGTHSAM=">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</latexit> <latexit sha1_base64="H7Rv+ZHksM7/70841dw/vasasCQ=">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</latexit> The power source of quasars • The luminosity (L) of quasars, i.e. how bright they are, can be as high as Lquasar ~ 1012 Lsun ~ 1040 W. • The energy source of quasars is accretion power: - Nuclear fusion: 2 11 1 ∆E =0.007 mc =6 10 W s g− -
Analysis and Instrumentation for a Xenon-Doped Liquid Argon System
Analysis and instrumentation for a xenon-doped liquid argon system Ryan Gibbons Work completed under the advisement of Professor Michael Gold Department of Physics and Astronomy The University of New Mexico May 27, 2020 1 Abstract Liquid argon is a scintillator frequently used in neutrino and dark matter exper- iments. In particular, is the upcoming LEGEND experiment, a neutrinoless double beta decay search, which will utilize liquid argon as an active veto system. Neutri- noless double beta decay is a theorized lepton number violating process that is only possible if neutrinos are Majorana in nature. To achieve the LEGEND background goal, the liquid argon veto must be more efficient. Past studies have shown the ad- dition of xenon in quantities of parts-per-million in liquid argon improves the light yield, and therefore efficiency, of such a system. Further work, however, is needed to fully understand the effects of this xenon doping. I present a physical model for the light intensity of xenon-doped liquid argon. This model is fitted to data from various xenon concentrations from BACoN, a liquid argon test stand. Additionally, I present preliminary work on the instrumentation of silicon photomultipliers for BACoN. 2 Contents 1 Introduction 4 1.1 Neutrinos and double beta decay . 4 1.2 LEGEND and BACoN . 5 1.3 Liquid argon . 6 2 Physical modeling of xenon-doped liquid argon 8 2.1 Model . 8 2.2 Fits to BACoN Data . 9 2.3 Analysis of Rate Constant . 12 3 Instrumentation of SiPMs 12 4 Conclusions and Future Work 13 3 1 Introduction 1.1 Neutrinos and double beta decay Neutrinos are neutral leptons that come in three flavors: electron, muon, and tao. -
The Cherenkov Telescope Array Observatory Comes of Age
The Organisation DOI: 10.18727/0722-6691/5194 The Cherenkov Telescope Array Observatory Comes of Age Federico Ferrini 1 Conceived around a decade ago by a the detection of a clear signal from Wolfgang Wild 1, 2 group of scientists, we are now on the the Crab nebula above 1 TeV with the cusp of constructing the largest observa- Whipple 10-m imaging atmospheric tory to study the gamma-ray Universe. Cherenkov telescope (IACT). Since then, 1 CTAO, Heidelberg (DE) and Bologna (IT) Here we present a short look back at the the instrumentation for, and techniques 2 ESO evolution and recent matu ration of the of, astronomy with IACTs have evolved CTA project, as well as an outline of our to the extent that a flourishing new scien- expectations for the near future. A com- tific discipline has been established, with The Cherenkov Telescope Array (CTA) is prehensive introduction to CTA, including the detection of more than 150 sources the next-generation ground-based the detection technique, its history, the and a major impact in astrophysics — observatory for gamma-ray astronomy extraordinary improvements with respect and, more widely, in physics. The current at very high energies. With up to 120 to previous experimental facilities, and the major arrays of IACTs (the High Energy telescopes on two sites, CTA will be the scientific objectives has been provided by Stereoscopic System [H.E.S.S.], the world’s largest and most sensitive Werner Hofmann, Spokesperson of the Major Atmospheric Gamma Imaging high-energy gamma-ray observatory CTA Consortium (Hofmann, 2017). Cherenkov Telescope [MAGIC], and the covering the entire sky. -
MAGIC Observations of the Diffuse Γ-Ray Emission in the Vicinity of the Galactic Center? MAGIC Collaboration: V
A&A 642, A190 (2020) Astronomy https://doi.org/10.1051/0004-6361/201936896 & c MAGIC Collaboration 2020 Astrophysics MAGIC observations of the diffuse γ-ray emission in the vicinity of the Galactic center? MAGIC Collaboration: V. A. Acciari1,2, S. Ansoldi3,24, L. A. Antonelli4, A. Arbet Engels5, D. Baack6, A. Babic´7, B. Banerjee8, U. Barres de Almeida9, J. A. Barrio10, J. Becerra González1,2, W. Bednarek11, L. Bellizzi12, E. Bernardini13,17, A. Berti14, J. Besenrieder15, W. Bhattacharyya13, C. Bigongiari4, A. Biland5, O. Blanch16, G. Bonnoli12, Ž. Bošnjak7, G. Busetto17, R. Carosi18, G. Ceribella15, Y. Chai15, A. Chilingaryan19, S. Cikota7, S. M. Colak16, U. Colin15, E. Colombo1,2, J. L. Contreras10, J. Cortina20, S. Covino4, V. D’Elia4, P. Da Vela18, F. Dazzi4, A. De Angelis17, B. De Lotto3, M. Delfino16,27, J. Delgado16,27, D. Depaoli14, F. Di Pierro14, L. Di Venere14, E. Do Souto Espiñeira16, D. Dominis Prester7, A. Donini3, D. Dorner21, M. Doro17, D. Elsaesser6, V. Fallah Ramazani22, A. Fattorini6, A. Fernández-Barral17, G. Ferrara4, D. Fidalgo10, L. Foffano17, M. V. Fonseca10, L. Font23, C. Fruck15;??, S. Fukami24, R. J. García López1,2, M. Garczarczyk13, S. Gasparyan19, M. Gaug23, N. Giglietto14, F. Giordano14, N. Godinovic´7, D. Green15, D. Guberman16, D. Hadasch24, A. Hahn15, J. Herrera1,2, J. Hoang10, D. Hrupec7, M. Hütten15, T. Inada24, S. Inoue24, K. Ishio15, Y. Iwamura24;??, L. Jouvin16, D. Kerszberg16, H. Kubo24, J. Kushida24, A. Lamastra4, D. Lelas7, F. Leone4, E. Lindfors22, S. Lombardi4, F. Longo3,28, M. López10, R. López-Coto17, A. López-Oramas1,2, S. Loporchio14, B. Machado de Oliveira Fraga9, C. -
Antimatter Gravity and the Universe Dragan Hajdukovic
Antimatter gravity and the Universe Dragan Hajdukovic To cite this version: Dragan Hajdukovic. Antimatter gravity and the Universe. Modern Physics Letters A, World Scientific Publishing, 2019, 10.1142/S0217732320300013. hal-02106808v3 HAL Id: hal-02106808 https://hal.archives-ouvertes.fr/hal-02106808v3 Submitted on 21 Nov 2019 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. 1 Brief Review Antimatter gravity and the Universe Dragan Slavkov Hajdukovic Institute of Physics, Astrophysics and Cosmology Crnogorskih junaka 172, Cetinje, Montenegro [email protected] Abstract: The aim of this brief review is twofold. First, we give an overview of the unprecedented experimental efforts to measure the gravitational acceleration of antimatter; with antihydrogen, in three competing experiments at CERN (AEGIS, ALPHA and GBAR), and with muonium and positronium in other laboratories in the world. Second, we present the 21st Century’s attempts to develop a new model of the Universe with the assumed gravitational repulsion between matter and antimatter; so far, three radically different and incompatible theoretical paradigms have been proposed. Two of these 3 models, Dirac-Milne Cosmology (that incorporates CPT violation) and the Lattice Universe (based on CPT symmetry), assume a symmetric Universe composed of equal amounts of matter and antimatter, with antimatter somehow “hidden” in cosmic voids; this hypothesis produced encouraging preliminary results. -
ANTIMATTER a Review of Its Role in the Universe and Its Applications
A review of its role in the ANTIMATTER universe and its applications THE DISCOVERY OF NATURE’S SYMMETRIES ntimatter plays an intrinsic role in our Aunderstanding of the subatomic world THE UNIVERSE THROUGH THE LOOKING-GLASS C.D. Anderson, Anderson, Emilio VisualSegrè Archives C.D. The beginning of the 20th century or vice versa, it absorbed or emitted saw a cascade of brilliant insights into quanta of electromagnetic radiation the nature of matter and energy. The of definite energy, giving rise to a first was Max Planck’s realisation that characteristic spectrum of bright or energy (in the form of electromagnetic dark lines at specific wavelengths. radiation i.e. light) had discrete values The Austrian physicist, Erwin – it was quantised. The second was Schrödinger laid down a more precise that energy and mass were equivalent, mathematical formulation of this as described by Einstein’s special behaviour based on wave theory and theory of relativity and his iconic probability – quantum mechanics. The first image of a positron track found in cosmic rays equation, E = mc2, where c is the The Schrödinger wave equation could speed of light in a vacuum; the theory predict the spectrum of the simplest or positron; when an electron also predicted that objects behave atom, hydrogen, which consists of met a positron, they would annihilate somewhat differently when moving a single electron orbiting a positive according to Einstein’s equation, proton. However, the spectrum generating two gamma rays in the featured additional lines that were not process. The concept of antimatter explained. In 1928, the British physicist was born. -
A Short History of Physics (Pdf)
A Short History of Physics Bernd A. Berg Florida State University PHY 1090 FSU August 28, 2012. References: Most of the following is copied from Wikepedia. Bernd Berg () History Physics FSU August 28, 2012. 1 / 25 Introduction Philosophy and Religion aim at Fundamental Truths. It is my believe that the secured part of this is in Physics. This happend by Trial and Error over more than 2,500 years and became systematic Theory and Observation only in the last 500 years. This talk collects important events of this time period and attaches them to the names of some people. I can only give an inadequate presentation of the complex process of scientific progress. The hope is that the flavor get over. Bernd Berg () History Physics FSU August 28, 2012. 2 / 25 Physics From Acient Greek: \Nature". Broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves. The universe is commonly defined as the totality of everything that exists or is known to exist. In many ways, physics stems from acient greek philosophy and was known as \natural philosophy" until the late 18th century. Bernd Berg () History Physics FSU August 28, 2012. 3 / 25 Ancient Physics: Remarkable people and ideas. Pythagoras (ca. 570{490 BC): a2 + b2 = c2 for rectangular triangle: Leucippus (early 5th century BC) opposed the idea of direct devine intervention in the universe. He and his student Democritus were the first to develop a theory of atomism. Plato (424/424{348/347) is said that to have disliked Democritus so much, that he wished his books burned. -
Ten Years of PAMELA in Space
Ten Years of PAMELA in Space The PAMELA collaboration O. Adriani(1)(2), G. C. Barbarino(3)(4), G. A. Bazilevskaya(5), R. Bellotti(6)(7), M. Boezio(8), E. A. Bogomolov(9), M. Bongi(1)(2), V. Bonvicini(8), S. Bottai(2), A. Bruno(6)(7), F. Cafagna(7), D. Campana(4), P. Carlson(10), M. Casolino(11)(12), G. Castellini(13), C. De Santis(11), V. Di Felice(11)(14), A. M. Galper(15), A. V. Karelin(15), S. V. Koldashov(15), S. Koldobskiy(15), S. Y. Krutkov(9), A. N. Kvashnin(5), A. Leonov(15), V. Malakhov(15), L. Marcelli(11), M. Martucci(11)(16), A. G. Mayorov(15), W. Menn(17), M. Mergè(11)(16), V. V. Mikhailov(15), E. Mocchiutti(8), A. Monaco(6)(7), R. Munini(8), N. Mori(2), G. Osteria(4), B. Panico(4), P. Papini(2), M. Pearce(10), P. Picozza(11)(16), M. Ricci(18), S. B. Ricciarini(2)(13), M. Simon(17), R. Sparvoli(11)(16), P. Spillantini(1)(2), Y. I. Stozhkov(5), A. Vacchi(8)(19), E. Vannuccini(1), G. Vasilyev(9), S. A. Voronov(15), Y. T. Yurkin(15), G. Zampa(8) and N. Zampa(8) (1) University of Florence, Department of Physics, I-50019 Sesto Fiorentino, Florence, Italy (2) INFN, Sezione di Florence, I-50019 Sesto Fiorentino, Florence, Italy (3) University of Naples “Federico II”, Department of Physics, I-80126 Naples, Italy (4) INFN, Sezione di Naples, I-80126 Naples, Italy (5) Lebedev Physical Institute, RU-119991 Moscow, Russia (6) University of Bari, I-70126 Bari, Italy (7) INFN, Sezione di Bari, I-70126 Bari, Italy (8) INFN, Sezione di Trieste, I-34149 Trieste, Italy (9) Ioffe Physical Technical Institute, RU-194021 St. -
Observation of High-Energy Gamma-Rays with the Calorimetric
Louisiana State University LSU Digital Commons LSU Doctoral Dissertations Graduate School 10-22-2018 Observation of High-Energy Gamma-Rays with the Calorimetric Electron Telescope (CALET) On-board the International Space Station Nicholas Wade Cannady Louisiana State University and Agricultural and Mechanical College, [email protected] Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_dissertations Part of the Instrumentation Commons, and the Other Astrophysics and Astronomy Commons Recommended Citation Cannady, Nicholas Wade, "Observation of High-Energy Gamma-Rays with the Calorimetric Electron Telescope (CALET) On-board the International Space Station" (2018). LSU Doctoral Dissertations. 4736. https://digitalcommons.lsu.edu/gradschool_dissertations/4736 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Doctoral Dissertations by an authorized graduate school editor of LSU Digital Commons. For more information, please [email protected]. OBSERVATION OF HIGH-ENERGY GAMMA-RAYS WITH THE CALORIMETRIC ELECTRON TELESCOPE (CALET) ON-BOARD THE INTERNATIONAL SPACE STATION A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor of Philosophy in The Department of Physics and Astronomy by Nicholas Wade Cannady B.S., Louisiana State University, 2011 December 2018 To Laura and Mom ii Acknowledgments First and foremost, I would like to thank my partner, Laura, for the constant and unconditional support that she has provided during the research described in this thesis and my studies in general. Without her, this undertaking would not have been possible. -
Very High Energy Gamma Ray Observations with the MAGIC Telescope (A Biased Selection)
Very High Energy Gamma Ray Observations with the MAGIC Telescope (a biased selection) Nepomuk Otte for the MAGIC collaboration • Imaging air shower Cherenkov technique – The MAGIC telescope • Observation of the AGN 3c279 • Observation of Neutron Stars with MAGIC • The Crab nebula and Pulsar (young pulsar) [astro-ph/0705.3244] • PSR B1951+32 (middle aged pulsar) [astro-ph/0702077] • PSR B1957+20 (millisecond pulsar) • LS I 61+303 [Science 2006] • Where to go next? A. Nepomuk Otte Max-Planck-Institut für Physik / Humboldt Universität Berlin 2 The non-thermal universe in VHE gamma-rays SNRs Pulsars Micro quasars AGNs and PWN X-ray binaries GRBs Origin of Space-time cosmic rays Dark matter & relativity Cosmology A. Nepomuk Otte Max-Planck-Institut für Physik / Humboldt Universität Berlin 3 VHE gamma-ray sources status ICRC 2007 71 known sources detections from ground Rowell A. Nepomuk Otte Max-Planck-Institut für Physik / Humboldt Universität Berlin 4 Imaging Air Cherenkov Technique Cherenkov light image of particle shower Gamma in telescope camera ray Particle ~ 10 km • fast light flash (nanoseconds) shower • 100 photons per m² (1 TeV Gamma Ray) t h g o li ~ 1 v o k n e r e h C reconstruct: ~ 120 m arrival direction, energy reject hadron background A. Nepomuk Otte Max-Planck-Institut für Physik / Humboldt Universität Berlin 5 CurrentCurrent generationgeneration CherenkovCherenkov telescopestelescopes MAGIC Veritas MAGIC (Germany, Spain, Italy) VERITAS 1 telescope 17 meters Ø (USA & England) 4 (7) telescopes Montosa 10 meters Ø Canyon, Roque de Arizona los Muchachos, Canary Islands CANGAROO III Cangaroo(Australia III & Japan) 4 telescopes 10 meters Ø H.E.S.S. -
Antimatter in New Cartesian Generalization of Modern Physics
ACTA SCIENTIFIC APPLIED PHYSICS Volume 1 Issue 1 December 2019 Short Communications Antimatter in New Cartesian Generalization of Modern Physics Boris S Dzhechko* City of Sterlitamak, Bashkortostan, Russia *Corresponding Author: Boris S Dzhechko, City of Sterlitamak, Bashkortostan, Russia. Received: November 29, 2019; Published: December 10, 2019 Keywords: Descartes; Cartesian Physics; New Cartesian Phys- Thus, space, which is matter, moving relative to itself, acts as ics; Mater; Space; Fine Structure Constant; Relativity Theory; a medium forming vortices, of which the tangible objective world Quantum Mechanics; Space-Matter; Antimatter consists. In the concept of moving space-matter, the concept of ir- rational points as nested intervals of the same moving space obey- New Cartesian generalization of modern physics, based on the ing the Heisenberg inequality is introduced. With respect to these identity of space and matter Descartes, replaces the concept of points, we can talk about both the speed of their movement v, ether concept of moving space-matter. It reveals an obvious con- nection between relativity and quantum mechanics. The geometric which is equal to the speed of light c. Electrons are the reference and the speed of filling Cartesian voids formed during movement, interpretation of the thin structure constant allows a deeper un- points by which we can judge the motion of space-matter inside the derstanding of its nature and provides the basis for its theoretical atom. The movement of space-matter inside the atom suggests that calculation. It points to the reason why there is no symmetry be- there is a Cartesian void in it, which forces the electrons to perpetu- tween matter and antimatter in the world. -
Pos(ICRC2021)788
ICRC 2021 THE ASTROPARTICLE PHYSICS CONFERENCE ONLINE ICRC 2021Berlin | Germany THE ASTROPARTICLE PHYSICS CONFERENCE th Berlin37 International| Germany Cosmic Ray Conference 12–23 July 2021 Very-high-energy gamma-ray emission from GRB 201216C detected by MAGIC Satoshi Fukami,0,∗ Alessio Berti,1 Serena Loporchio,2 Yusuke Suda,3 Lara Nava,4 PoS(ICRC2021)788 Koji Noda,0 Željka Bošnjak, 5 Katsuaki Asano0 and Francesco Longo6,ℎ on behalf of the MAGIC Collaboration† 0Institute for Cosmic Ray Research, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Japan 1Max Planck Institut for Physics,Föhringer Ring 6, Munich, Germany 2INFN MAGIC Group: INFN Sezione di Bari and Dipartimento Interateneo di Fisica dell’Università e del Politecnico di Bari, I-70125, Bari, Italy 3Physics Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 739-8526 Hiroshima, Japan 4National Institute for Astrophysics (INAF), Street number, Merate, Italy 5 Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia 6University of Trieste, Department of Physics, via Valerio 2, Trieste, Italy ℎINFN, Sezione di Trieste, via Valerio 2, Trieste, Italy E-mail: [email protected] Gamma-ray bursts (GRBs) are the most energetic phenomena in the Universe. Many aspects of GRB physics are still under debate, such as the origin of their gamma-ray emission above the GeV energy range. In 2019, MAGIC detected TeV gamma rays from the long GRB 190114C, whose emission can be well explained by synchrotron-self Compton emission by relativistic electrons. However, it is still unclear whether such a process is common in GRBs, given the reduced number of GRBs detected until now at the very high energies (VHE).