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Effects of a dipole-like crustal field on solar wind interaction with Mars

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Earth and planetary Physics 2020年第1期4卷 23-31页

作者： ShiBang Li HaoYu Lu Jun Cui YiQun Yu Christian Mazelle Yun Li JinBin Cao School of Space and environment Beihang UniversityBeijing 100191China Key Laboratory of Space environment Monitoring and Information Processing Ministry of Industry and Information TechnologyBeijing 100191China School of Atmospheric Sciences Sun Yat-Sen UniversityZhuhai Guangdong 519082China CNRS Institute de Recherche en Astrophysique et PlanétologieToulouseFrance

A three-dimensional four species multi-fluid magnetohydrodynamic (MHD) model was constructed to simulate the solar wind global interaction with Mars. The model was augmented to consider production and loss of the significant ion species in the Martian ionosphere, i.e., H^+, O2^+, O^+, CO^+2, associated with chemical reactions among all species. An ideal dipole-like local crustal field model was used to simplify the empirically measured Martian crustal field. Results of this simulation suggest that the magnetic pile-up region (MPR) and the velocity profile in the meridian plane are asymmetric, which is due to the nature of the multi-fluid model to decouple individual ion velocity resulting in occurrence of plume flow in the northern Martian magnetotail. In the presence of dipole magnetic field model, boundary layers, such as bow shock (BS) and magnetic pile-up boundary (MPB), become protuberant. Moreover, the crustal field has an inhibiting effect on the flux of ions escaping from Mars, an effect that occurs primarily in the region between the terminator (SZA 90°) and the Sun Mars line of the magnetotail (SZA 180°), partially around the terminator region. In contrast, near the tailward central line the crustal field has no significant impact on the escaping flux.

关键词： solar wind interaction with Mars global MHD simulation crustal field escape flux

A New Large Scale Instability in Rotating Stratified Fluids Driven by Small Scale Forces

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Open Journal of Fluid Dynamics 2013年第4期3卷 340-351页

作者： Anatoly Tur Malik Chabane Vladimir Yanovsky institute for Single Crystals National Academy of Science Ukraine Kharkov Ukraine Université de Toulouse [UPS] Centre National de la Recherche Scientifique Institut de Recherche en Astrophysique et Planétologie Toulouse France

In this paper, we find a new large scale instability displayed by a stratified rotating flow in forced turbulence. The turbulence is generated by a small scale external force at low Reynolds number. The theory is built on the rigorous asymptotic method of multi-scale development. There is no other special constraint concerning the force. In previous papers, the force was either helical or violating parity invariance. The nonlinear equations for the instability are obtained at the third order of the perturbation theory. In this article, we explain a detailed study of the linear stage of the instability.

关键词： Large Scale Vortex Instability Coriolis Forse Buoyancy Multi-Scale development Small Scale Turbulence

Non Linear Vortex Structures in Stratified Fluid Driven by Small-Scale Helical Force

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Open Journal of Fluid Dynamics 2013年第2期3卷 64-74页

作者： Anatoly Tur Vladimir Yanovsky institute for Single Cristals Nat. Academy of Science Ukraine Kharkov Ukraine Université de Toulouse [UPS] CNRS Institut de Recherche en Astrophysique et PlanétologieToulouse Cedex France

In this work, we consider the effect of a small-scale helical driving force on fluid with a stable temperature gradient with Reynolds number . At first glance, this system does not have any instability. However, we show that a large scale vortex instability appears in the fluid despite its stable stratification. In a non-linear mode this instability becomes saturated and gives a large number of stationary spiral vortex structures. Among these structures there is a stationary helical soliton and a kink of the new type. The theory is built on the rigorous asymptotical method of multi-scale development.

关键词： Vortex Structures Large Scale Instability Small Scale Helical Force AKA-Effect

The Large Scale Instability in Rotating Fluid with Small Scale Force

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Open Journal of Fluid Dynamics 2015年第2期5卷 128-138页

作者： Michael Kopp Anatoly Tur Vladimir Yanovsky National Academy of Science Ukraine Institute for Single Crystals Kharkiv University Kharkov Ukraine institut de recherche en astrophysique et planétologie CNRS Université de Toulouse [UPS] Toulouse France

In this paper, we find a new large scale instability in rotating flow forced turbulence. The turbulence is generated by a small scale external force at low Reynolds number. The theory is built on the rigorous asymptotic method of multi-scale development. The nonlinear equations for the instability are obtained at the third order of the perturbation theory. In this article, we explain the nonlinear stage of the instability and the generation vortex kinks.

关键词： Large Scale Vortex Instability Coriolis Force Multi-Scale development Small Scale Turbulence Vortex Kinks

Nonlinear Vortex Structures in Obliquely Rotating Fluid

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Open Journal of Fluid Dynamics 2015年第4期5卷 311-321页

作者： Michael Kopp Anatoly Tur Vladimir Yanovsky institute for Single Crystals National Academy of Sciences of Ukraine Kharkov Ukraine V.N. Karazin Kharkiv National University 4 Svobody Sq. Kharkov Ukraine Université de Toulouse [UPS] CNRS Institut de Recherche en Astrophysique et Planétologie Toulouse Cedex France

In this paper, we find a new large scale instability which appears in obliquely rotating flow with the small scale turbulence, generated by external force with small Reynolds number. The external force has no helicity. The theory is based on the rigorous method of multi-scale asymptotic expansion. Nonlinear equations for instability are obtained in the third order of the perturbation theory. In this article, we explain in detail the nonlinear stage of the instability and we find the nonlinear periodic vortices and the vortex kinks of Beltrami type.

关键词： Large Scale Vortex Instability Coriolis Force Multi-Scale Asymptotic development Small Scale Turbulence Vortex Kinks

The Giant Radio Array for Neutrino detection(GRAND):Science and design

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Science China(Physics,Mechanics & Astronomy) 2020年第1期63卷 1-43页

作者： Jaime Alvarez-Muniz Rafael Alves Batista Aswathi Balagopal V. Julien Bolmont Mauricio Bustamante Washington Carvalho Jr. Didier Charrier Ismael Cognard Valentin decoene Peter B.denton Sijbrand de Jong Krijn D.de Vries Ralph engel Ke Fang Chad Finley Stefano Gabici Quan Bu Gou Jun Hua Gu Claire Guépin Hong Bo Hu Yan Huang Kumiko Kotera Sandra Le Coz Jean-Philippe Lenain Guo Liang Léü Olivier Martineau-Huynh Miguel Mostafá Fabrice Mottez Kohta Murase Valentin Niess Foteini Oikonomou Tanguy Pierog Xiang Li Qian Bo Qin Duan Ran Nicolas Renault-Tinacci Markus Roth Frank G.Schroder Fabian Schüssler Cyril Tasse Charles Timmerman Matías Tueros Xiang Ping Wu Philippe Zarka Andreas Zech B.Theodore Zhang Jian Li Zhang Yi Zhang Qian Zheng Anne Zilles departamento de Fisica de Particulas&lnstituto Galego de Fisica de Altas enerxias Universidad de Santiago de CompostelaSantiago de Compostela 15782Spain instituto de Astronomia Geofisica e Ciencias AtmosfericasUniversidade de Sao PauloSao Paulo-SP 05508-090Brazil department of Physics-Astrophysics University of OxfordDWBOxford 0X13RHUK institute of Experimental Particle Physics(etP) Karlsruhe Institute of Technology(KIT)Karlsru he D-76021Germany Laboratoire de Physique Nucleeaire et de Hautes energies(LPNHE) Sorbonne UniversiteUniversite Paris DiderotSorbonne Paris CiteCNRS place Jussieu F-75252Paris Cedex 5France Niels Bohr International Academy and DARK Niels Bohr InstituteCopenhagen 2100Denmark Discovery Center Niels Bohr InstituteCopenhagen 2100Denmark Center for Cosmology and AstroParticle Physics(CCA.PP)&department of Physics Ohio State UniversityColumbus OH 43210USA Universidade de Santiago de Compostela Santiago de Compostela 15782Spain 0SUBATECH Institut Mines-Telecom Atlantique-CNRS/IN2P3-Universite de NantesNantes 44300France Laboratoire de Physique et Chimie de Kenvironnement et de VEspace LPC2E CNRS-Universite d'Orleans Orleans F-45071France Station de Radioastronomie de Nancay Observatoire de ParisCNRS/INSU F-18330 NangayFrance Sorbonne Universite UMR 7095Institut d'Astrophysique de Paris98 bis bd AragoParis 75014France institute for Mathematics Astrophysics and Particle Physics(IMAPP)Radboud UniversiteitNijmegen 6500Netherlands Nationaal Instituut voor Kemfysica en Hoge energie Fysica(NIKHEF) Amsterdam NL-1009Netherlands IIHE/ELEM Vrije Universiteit BrusselPleinlaan 2Brussels 1050Belgium institute for Nuclear Physics(IKP) Karlsruhe Institute of Technology(KIT)Karlsruhe D-76021Germany Einstein Fellow Stanford UniversityStanford CA 94305USA department of Astronomy University of MarylandCollege Park MD 20742-2421USA Joint Space-Science institute College Park MD 20742-2421USA Oskar Klein Centre Stockholm UniversityStockholm SE-10691Sweden department of Phy

The Giant Radio Array for Neutrino detection(GRAND)is a planned large-scale observatory of ultra-high-energy(UHE)cosmic particles,with energies exceeding 10~8 Ge V.Its goal is to solve the long-standing mystery of the origin of UHE cosmic rays.To do this,GRAND will detect an unprecedented number of UHE cosmic rays and search for the undiscovered UHE neutrinos and gamma rays associated to them with unmatched sensitivity.GRAND will use large arrays of antennas to detect the radio emission coming from extensive air showers initiated by UHE particles in the atmosphere.Its design is modular:20 separate,independent sub-arrays,each of 10000 radio antennas deployed over 10000 km^2.A staged construction plan will validate key detection techniques while achieving important science goals early.Here we present the science goals,detection strategy,preliminary design,performance goals,and construction plans for GRAND.

关键词： radio telescopes neutrinos in astronomical observations cosmic rays in astronomical observations radiowave radiation:sources galactic and extragalactic cosmic rays:galactic and extragalactic

The Giant Radio Array for Neutrino detection(GRAND):Science and design

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Science China(Physics,Mechanics & Astronomy) 2020年第1期Mechanics & Astronomy) .卷 5-47页

作者： Jaime álvarez-Mu?iz Rafael Alves Batista Aswathi Balagopal V. Julien Bolmont Mauricio Bustamante Washington Carvalho Jr. Didier Charrier Isma?l Cognard Valentin decoene Peter B.denton Sijbrand de Jong Krijn D.de Vries Ralph engel Ke Fang Chad Finley Stefano Gabici Quan Bu Gou Jun Hua Gu Claire Guépin Hong Bo Hu Yan Huang Kumiko Kotera Sandra Le Coz Jean-Philippe Lenain Guo Liang Léü Olivier Martineau-Huynh Miguel Mostafá Fabrice Mottez Kohta Murase Valentin Niess Foteini Oikonomou Tanguy Pierog Xiang Li Qian Bo Qin Duan Ran Nicolas Renault-Tinacci Markus Roth Frank G.Schr ?der Fabian Schüssler Cyril Tasse Charles Timmerman Matías Tueros Xiang Ping Wu Philippe Zarka Andreas Zech B.Theodore Zhang Jian Li Zhang Yi Zhang Qian Zheng Anne Zilles SUBATECH Institut Mines-Telecom Atlantique – CNRS/IN2P3 – Université de Nantes Laboratoire de Physique et Chimie de l’environnement et de l’Espace LPC2E CNRS-Université d’Orléans Station de Radioastronomie de Nan?cay Observatoire de Paris Sorbonne Université UMR 7095 Institut d’Astrophysique de Paris institute for Mathematics Astrophysics and Particle Physics (IMAPP) Radboud Universiteit Nationaal Instituut voor Kernfysica en Hoge energie Fysica (NIKHEF) IIHE/ELEM Vrije Universiteit Brussel institute for Nuclear Physics (IKP) Karlsruhe Institute of Technology (KIT) Einstein Fellow Stanford University department of Astronomy University of Maryland departamento de Física de Partículas & instituto Galego de Física de Altas enerxías Universidad de Santiago de Compostela Joint Space-Science institute Oskar Klein Centre Stockholm University department of Physics Stockholm University Astro Particule et Cosmologie (APC) Université Paris Diderot CNRS/IN2P3 CEA/Irfu Observatoire de Paris institute of High energy Physics Chinese Academy of Sciences National Astronomical Observatories Chinese Academy of Sciences School of Physical Science and Technology Xinjiang University Center for Particle and Gravitational Astrophysics Pennsylvania State University department of Physics Pennsylvania State University department of Astronomy & Astrophysics Pennsylvania State University instituto de Astronomia Geofísica e Ciências Atmosféricas Universidade de S?o Paulo LUTH Observatoire de Paris CNRS Université Paris Diderot PSL Research University Clermont Université Université Blaise Pascal CNRS/IN2P3 Lab. de Physique Corpusculaire European Southern Observatory department of Mechanical and Electrical engineering Shandong Management University Bartol Research institute Department of Physics and Astronomy University of Delaware IRFU CEA Université Paris-Saclay GEPI Observatoire de Paris CNRS Université Paris Diderot instituto de F′?sica La Plata CONICET Shanghai Astronomical Observatory Chinese Acad

The Giant Radio Array for Neutrino detection（GRAND） is a planned large-scale observatory of ultra-high-energy（UHE） cosmic particles, with energies exceeding 10～8 Ge V. Its goal is to solve the long-standing mystery of the origin of UHE cosmic rays. To do this, GRAND will detect an unprecedented number of UHE cosmic rays and search for the undiscovered UHE neutrinos and gamma rays associated to them with unmatched sensitivity. GRAND will use large arrays of antennas to detect the radio emission coming from extensive air showers initiated by UHE particles in the atmosphere. Its design is modular: 20 separate, independent sub-arrays, each of 10000 radio antennas deployed over 10000 km2. A staged construction plan will validate key detection techniques while achieving important science goals early. Here we present the science goals, detection strategy, preliminary design, performance goals, and construction plans for GRAND.

关键词： radio telescopes neutrinos in astronomical observations cosmic rays in astronomical observations radiowave radiation: sources galactic and extragalactic cosmic rays