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Searching For Dark Matter With Cosmic Gamma Rays


Author : Andrea Albert
language : en
Publisher: Morgan & Claypool Publishers
Release Date : 2016-09-06

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Searching for Dark Matter with Cosmic Gamma Rays summarizes the evidence for dark matter and what we can learn about its particle nature using cosmic gamma rays. It has almost been 100 years since Fritz Zwicky first detected hints that most of the matter in the Universe that doesn't directly emit or reflect light. Since then, the observational evidence for dark matter has continued to grow. Dark matter may be a new kind of particle that is governed by physics beyond our Standard Model of particle physics. In many models, dark matter annihilation or decay produces gamma rays. There are a variety of instruments observing the gamma-ray sky from tens of MeV to hundreds of TeV. Some make deep, focused observations of small regions, while others provide coverage of the entire sky. Each experiment offers complementary sensitivity to dark matter searches in a variety of target sizes, locations, and dark matter mass scales. We review results from recent gamma-ray experiments including anomalies some have attributed to dark matter. We also discuss how our gamma-ray observations complement other dark matter searches and the prospects for future experiments.

Very High Energy Cosmic Gamma Radiation


Author : Felix A. Aharonian
language : en
Publisher: World Scientific
Release Date : 2004

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Gamma ray astronomy, the branch of high energy astrophysics that studies the sky in energetic ?-ray photons, is destined to play a crucial role in the exploration of nonthermal phenomena in the Universe in their most extreme and violent forms. The great potential of this discipline offers impressive coverage of many OC hot topicsOCO of modern astrophysics and cosmology, such as the origin of galactic and extragalactic cosmic rays, particle acceleration and radiation processes under extreme astrophysical conditions, and the search for dark matter."

Cosmic Rays For Particle And Astroparticle Physics


Author : S Giani
language : en
Publisher: World Scientific
Release Date : 2011-06-29

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The conference was aimed at promoting contacts between scientists involved in solar-terrestrial physics, space physics, astroparticle physics and cosmology both from the theoretical and the experimental approach. The conference was devoted to physics and physics requirements, survey of theoretical models and performances of detectors employed (or to be employed) in experiments for fundamental physics, astroparticle physics, astrophysics research and space environment — including Earth magnetosphere and heliosphere and solar-terrestrial physics. Furthermore, cosmic rays have been used to extend the scientific research experience to teachers and students with air shower arrays and other techniques. Presentations included the following subjects: advances in physics from present and next generation ground and space experiments, dark matter, double beta decay, high-energy astrophysics, space environment, trapped particles, propagation of cosmic rays in the Earth atmosphere, Heliosphere, Galaxy and broader impact activities in cosmic rays science. The open and flexible format of the Conference was conducive to fruitful exchanges of points of view among participants and permitted the evaluation of the progresses made and indicated future research directions. The participants were experienced researchers but also graduate students (MSc and PhD) and recent postdoctoral fellows. Errata(s) Nuclear and Non-Ionizing Energy-Loss for Coulomb Scattered Particles from Low Energy up to Relativistic Regime in Space Radiation Environment: Page 17 to Page 22 (245 KB) Contents:Broader Impacts Activites and Treatments:VHE Spectral Energy Distribution of Crab Nebula Compared with the Prediction of a Synchrotron Self-Compton Emission Model (V G Sinitsyna, A Y Alaverdian, A S Boldyrev, S S Borisov, R M Mirsafatikhov and V Y Sinitsyna)Nuclear and Non-Ionizing Energy-Loss for Coulomb Scattered Particles from Low Energy Up to Relativistic Regime in Space Radiation Environment (M J Boschini, C Consolandi, M Gervasi, S Giani, D Grandi, V Ivanchenko, S Pensotti, P G Rancoita and M Tacconi)Study of the Natural Radioactivity Influence on ARGO-YBJ Detector (I Bolognino, C Cattaneo, E Giroletti, G Liguori, P Salvini, P Vallania and C Vigorito)High-Accuracy Determination of Fabry-Perot Effective Mirror Spacing Used for the Receivers of Atmospheric Monitoring in VHE Gamma Ray Astronomy (S Maltezos, E Fokitis, N Maragos, V Gika, A Georgakopoulou, E Koubli and G Koutsourakis)AMS-02 Photon Data Reduction Approach (G Boella, M J Boschini, C Consolandi, S Della Torre, M Gervasi, D Grandi, E Memola, S Pensotti, P G Rancoita and M Tacconi)CZELTA: An Overview of the Czech Large-Area Time Coincidence Array (K Smolek, J Čermák, J Hubík, S Pospíšil, P Přidal, J Smejkal, I Štekl, F Blaschke, P Lichard and V Vícha)Calibration of the CMS Electromagnetic Calorimeter with First LHC Data (V Sola)On the Detectability of Cosmic Ray Electron Spectral Features in the Microwave/mm-Wave Range (A Tartari, M Gervasi, G Sironi, M Zannoni and S Spinelli)Science in the Schools — the Extreme Energy Events Project (M Abbrescia, R Antolini, R Baldini Ferroli, G Bencivenni, E Bressan, A Chiavassa, C Cical, L Cifarelli, F Coccetti, D De Gruttola, S DePasquale, M DIncecco, F L Fabbri, V Frolov, M Garbini, C Gustavino, D Hatzifotiadou, P La Rocca, F Librizzi, A Maggiora, H Menghetti, S Miozzi, R Moro, M Panareo, G Piragino, F Riggi, F Romano, G Sartorelli, E Scapparone, M Selvi, S Serci, E Siddi, M C S Williams, A Zichichi and R Zuyeuski)A Cosmic Ray Detector Array for Schools in the Cambridge Region (S A Wotton, M J Goodrick, B Hommels and M A Parker)Observation of Electroscalar Radiation During a Solar Eclipse (O A Zaymidoroga and D V Podgainy)Young Researchers Focus on the Extreme Energy Universe (James L Pinfold)Cosmic Rays Experimental Observations and Searches:Galactic Cosmic Ray Production in Tycho's SNR and Geminga (V G Sinitsyna, A Y Alaverdian, S S Borisov, S I Nikolsky and V Y Sinitsyna)The CUORICINO and CUORE Neutrinoless Double Beta Decay Experiments (T I Banks)Results from DAMA/LIBRA (R Bernabei, P Belli, F Montecchia, F Nozzoli, F Cappella, A d'Angelo, A Incicchitti, D Prosperiy, R Cerulli, C J Dai, H L He, X H Ma, X D Sheng, Z P Yez and R G Wang)Recent Results from the Fermi Large Area Space Telescope (Emanuele Bonamente)Gamma-Ray Activity of Cygnus X-3 at Energy Range of 1-100 TeV During 15 Year Observations of SHALON (V G Sinitsyna, A Y Alaverdian, S S Borisov, S I Nikolsky and V Y Sinitsyna)Signatures of Middle Aged, Nearby Pulsars in the Cosmic Ray Lepton Spectrum? (I Büsching and Okker C deJager)Highlights from the ARGO-YBJ Experiment (P Camarri)Status of MAGIC and Recent Results (A de Angelis and V Scalzotto)Recent HESS Results (B Degrange)Atmospheric Evaluation with LIDAR for MAGIC (C Fruck, J Hose, R Mirzoyan and M Teshima)The AMS-02 Silicon Tracker (S Haino)From the Knee to the Ankle: From Galactic to Extragalactic Origin of Cosmic Rays? (Andreas Haungs)High Energy Cosmic-Ray Photons and Helium (Stanislav Borisov, Sergey Voronov, Arkady Galper and Alexander Karelin)Status of UHE CR Orbital Fluorescence Detector TUS (P Klimov, G Garipov, B Khrenov, N Kalmykov, V Morozenko, M Panasyuk, S Sharakin, A Shirokov, I Yashin, S Biktemerova, A Grinyuk, D Naumov, L Tkachev, A Tkachenko, O Saprykin, I Park, J Lee, G Na, O Martinez and H Salazar)The Observation of the Light Component Spectrum in the 5–250 TeV Region by the ARGO-YBJ Experiment (S M Mari and P Montini)Status and Plans of the LUCIFER Experiment (F Orio)In-Flight Measurement of the Aabsolute Energy Scale of the Fermi Large Area Telescope (M Pesce-Rollins)The Synergy between Astroparticle and Collider Physics in the Search for Dark Matter (James L Pinfold)PICASSO: Search for Dark Matter in the Spin-Dependent Sector (M-C Piro)Recent Results from VERITAS (John Quinn)Recent Results from the PAMELA Experiment (S B Ricciarini)First Results of LHCF; Very Forward Particles at LHC Collision (T Sako)Status and Recent Results from the CREAM Experiment (E S Seo, H S Ahn, P Bhoyar, J Eaton, O Ganel, J H Han, A Haque, K C Kim, M H Kim, M H Lee, S E Lee, L Lutz, A Malinin, O Ofoha, S S Ryu, B P Smith, A Vartanyan, P Walpole, J Wu, J H Yoo, Y S Yoon, T Anderson, N B Conklin, S Coutu, M Geske, S I Mognet, L Barbier, J T Link, J W Mitchell, A Barrau, M Bunerd, B Coste, L Derome, M Mangin-Brinet, A Putze, Y Sallaz-Damaz, R Bazer-Bachi, J J Beatty, T J Brandt, G Bigongiari, P Maestro and R Zei)On the Possibility of Registering UHE EAS Cherenkov Light by the TUS Detector (O P Shustova, N N Kalmykov and B A Khrenov)TeV Gamma-Rays from NGC 1275 Detected in 15 Year Observation of SHALON Telescope (V G Sinitsyna, S I Nikolsky and V Y Sinitsyna)Constraints on Extragalactic Background Light from Distant Quasars 3C454.3 (z = 0.859 and 1739+522 (z = 1.375) Detected by SHALON (V G Sinitsyna, S I Nikolsky and V Y Sinitsyna)Status of the High Altitude Water Cherenkov (HAWC) Gamma Ray Observatory (Wayne Springer)Light Nuclei and Isotope Abundances in Cosmic Rays. Results from AMS-01 (N Tomassetti)Cosmic Rays Propagation and Environment:The AMS-02 Proton Spectra and the Geomagnetic Field (P Bobik, M J Boschini, C Consolandi, S Della Torre, M Gervasi, D Grandi, K Kudela, S Pensotti and P G Rancoita)Stereo Observations of the Energetic Heavy Ions During the Minimum of Solar Cycle 23 (R Bučík, U Mall, A Korth and G M Mason)Electron and Positron Solar Modulation and Prediction for AMS02 (P Bobik, M J Boschini, C Consolandi, S Della Torre, M Gervasi, D Grandi, K Kudela, S Pensotti and P G Rancoita)How to Use Molecular Clouds to Study the Propagation of Cosmic Rays in the Galaxy (S Gabici)Proton Modulation in the Heliosphere for Different Solar Conditions and Prediction for AMS-02 (P Bobik, G Boella, M J Boschini, C Consolandi, S Della Torre, M Gervasi, D Grandi, K Kudela, E Memola, S Pensotti, P G Rancoita and M Tacconi)Proton and Antiproton Modulation in the Heliosphere for Different Solar Conditions and AMS-02 Measurements Prediction (P Bobik, M J Boschini, C Consolandi, S Della Torre, M Gervasi, D Grandi, K Kudela, S Pensotti and P G Rancoita)A Consistent Interpretation of Recent CR Nuclei and Electron Spectra (Giuseppe Di Bernardo, Carmelo Evoli, Daniele Gaggero, Dario Grasso, Luca Maccione and Mario Nicola Mazziotta)Cosmic Rays for Heliospheric Space Weather Storm Prediction (Frank Jansen and Jörg Behrens)Energetic Particles in the Magnetosphere of Earth: Selected Results and Problems (Karel Kudela, Leonid L Lazutin and Yuri I Logachev)Cosmic Rays of Leptons from Pulsars and Supernova Remnants (Roberto A Lineros)High Energy Phenomena in the Low Atmosphere; Particle Fluxes from Thunderstorm Clouds (Ashot Chilingarian and Bagrat Mailyan)The Cosmic-Ray Populations of Nearby Galaxies (P Martin)USINE: A New Public Cosmic Ray Propagation Code (Basic Phenomenology, Sample Results, and a Bit of USINE) (D Maurin)Propagation of Galactic Cosmic Rays and the AMS-02 Experiment (Miguel Pato, Dan Hooper and Melanie Simet)Galactic Cosmic Rays in the Dynamic Heliosphere (Marius Potgieter, Stefan Ferreira and Du Toit Strauss)A Markov Chain Monte Carlo Technique to Sample Transport and Source Parameters of Galactic Cosmic Rays (A Putze, L Derome, F Donato and D Maurin)PAMELA Through a Magnetic Lens (J P Roberts)Analysis of Possibility of Cosmic Rays Proton Anisotropy Phase and Amplitude and Electron Spectra Description at TeV-Region within the Bounds of the Same Set of Sources (Olga Strelnikova, Vladimir Ptuskin and Lyubov Sveshnikova)Interstellar Gamma Rays and Cosmic Rays: New Insights from FERMI-LAT and Integral (A W Strong)Energy Loss for Electrons in the Heliosphere and Local Interstellar Spectrum for Solar Modulation (P Bobik, G Boella, M J Boschini, C Consolandi, S Della Torre, M Gervasi, D Grandi, M Elmo, K Kudela, E Memola, S Pensotti, P G Rancoita, D Rozza and M Tacconi)Cosmic Rays from Astrophysical Sources:Cosmic Ray Acceleration in Supernova Remnants (P Blasi)γ-Rays from Heavy Nuclei Accelerated in Supernova Remnants (D Caprioli, P Blasi and E Amato)Anisotropies in the Cosmic-Ray Electron Spectrum: A Way to Discriminate between Exotic and Astrophysical Sources? (I Cernuda)Cosmic-Ray Electrons and Positrons from Gamma-Ray Pulsars (M Dormody)Galactic Electrons and Positrons at the Earth: New Estimate of the Primary and Secondary Fluxes (J Lavalle)The 'PAMELA Anomaly' Indicates a Nearby Cosmic Ray Accelerator (P Mertsch and S Sarkar)Observations of Intermediate Synchrotron Peaked Blazars with the Fermi-LAT (C Monte)Shock Acceleration in Partially Neutral Plasmas (G Morlino, E Amato, P Blasi and D Caprioli)Pulsar Electrons Detection in AMS-02 Experiment. Model Status and Discovery Potential (Jonathan Pochon)The CR Connection: UHE Primaries and Secondaries from UHECR Sources (A M Taylor)η Carinae: A Very Large Hadron Collider (R Walter, C Farnier & J-C Leyder)Cosmic Rays from Exotic Sources:Gamma Rays from Dark Matter (T Bringmann)Introducing CLUMPY: A Public Code for Gamma-Ray Emission from Dark Matter Annihilation in the Galaxy (C Combet, A Charbonnier and D Maurin)Cosmic Rays and Dark Matter Indirect Detection (Timur Delahaye)Neutrinos from Dark Matter (M H Reno)Charged Cosmic Rays from Dark Matter (P Salati)Gamma-Ray and Neutrino Signatures of Unstable Dark Matter (David Tran)Gamma-Ray Anisotropies from Decaying Dark Matter (C Weniger) Readership: Postgraduate students, researchers and engineers. Keywords:Astroparticle;Particle;Space Physics;Cosmic Ray Physics;Heliosphere;Dark Matter;Double-Beta DecayKey Features:Complete review of the fieldUp-to-date results and informationBroad vision for the future in the field, indication of future research direction

Optimized Dark Matter Searches In Deep Observations Of Segue 1 With Magic


Author : Jelena Aleksić
language : en
Publisher: Springer
Release Date : 2015-11-06

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This thesis presents the results of indirect dark matter searches in the gamma-ray sky of the near Universe, as seen by the MAGIC Telescopes. The author has proposed and led the 160 hours long observations of the dwarf spheroidal galaxy Segue 1, which is the deepest survey of any such object by any Cherenkov telescope so far. Furthermore, she developed and completely characterized a new method, dubbed “Full Likelihood”, that optimizes the sensitivity of Cherenkov instruments for detection of gamma-ray signals of dark matter origin. Compared to the standard analysis techniques, this novel approach introduces a sensitivity improvement of a factor of two (i.e. it requires 4 times less observation time to achieve the same result). In addition, it allows a straightforward merger of results from different targets and/or detectors. By selecting the optimal observational target and combining its very deep exposure with the Full Likelihood analysis of the acquired data, the author has improved the existing MAGIC bounds to the dark matter properties by more than one order of magnitude. Furthermore, for particles more massive than a few hundred GeV, those are the strongest constraints from dwarf galaxies achieved by any gamma-ray instrument, both ground-based or space-borne alike.

Dark Matter And Dark Energy


Author : Sabino Matarrese
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-02-10

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This book brings together reviews from leading international authorities on the developments in the study of dark matter and dark energy, as seen from both their cosmological and particle physics side. Studying the physical and astrophysical properties of the dark components of our Universe is a crucial step towards the ultimate goal of unveiling their nature. The work developed from a doctoral school sponsored by the Italian Society of General Relativity and Gravitation. The book starts with a concise introduction to the standard cosmological model, as well as with a presentation of the theory of linear perturbations around a homogeneous and isotropic background. It covers the particle physics and cosmological aspects of dark matter and (dynamical) dark energy, including a discussion of how modified theories of gravity could provide a possible candidate for dark energy. A detailed presentation is also given of the possible ways of testing the theory in terms of cosmic microwave background, galaxy redshift surveys and weak gravitational lensing observations. Included is a chapter reviewing extensively the direct and indirect methods of detection of the hypothetical dark matter particles. Also included is a self-contained introduction to the techniques and most important results of numerical (e.g. N-body) simulations in cosmology. " This volume will be useful to researchers, PhD and graduate students in Astrophysics, Cosmology Physics and Mathematics, who are interested in cosmology, dark matter and dark energy.

Solar And Galactic Cosmic Rays


Author : P. R. Blake
language : en
Publisher: Elsevier
Release Date : 2016-06-03

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Solar and Galactic Cosmic Rays

The Search For Wimp Dark Matter Continuum Gamma Ray Emission From Dark Matter Satellites In The Milky Way Using The Fermi Lat


Author :
language : en
Publisher: Stanford University
Release Date : 2011

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This thesis focuses on the search for unknown dark matter (DM) satellites in the Milky Way using the Fermi Large Area Space Telescope (LAT). The Fermi Gamma-ray Space Telescope (Fermi) is a next generation space observatory, which was successfully launched on June 11th, 2008. The LAT is the principal scientific instrument onboard. Its unprecedented angular resolution and sensitivity in the 100 MeV to > 300 GeV energy range makes it an excellent instrument for probing the sky for DM satellites. Current N-body simulations based on the Lambda-CDM cosmology model predict a large number of as yet unobserved DM satellites in our galaxy; some satellites are predicted to be extended sources (> 1deg extension) as seen by the LAT. Our work assumes that a significant component of DM is a Weakly Interacting Massive Particle (WIMP) in the 100 GeV mass range. The annihilation of WIMPs results in many high energy gamma rays that can be well measured by the LAT. The WIMP produced gamma-ray spectrum from the putative DM satellites is considerably harder than most astrophysical sources. Also, DM satellites have no astronomical counterparts in the X-ray and radio bands, and the emission has no time variability. My thesis will focus on a blind analysis in the search for unknown DM satellites using one year of LAT data, and setting constraints on some WIMP models based on the results of our analysis in which we find no candidates.