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Author : Richard A. Mewaldt
Publisher : Unknown
Page : 128 pages
File Size : 44,6 Mb
Release : 2000
Category : Electronic
ISBN : OCLC:59517061
Author : Gang Li
Publisher : American Institute of Physics
Page : 468 pages
File Size : 43,7 Mb
Release : 2008-09-12
Category : Science
ISBN : UCSD:31822037194040
All papers have been peer-reviewed. Our star is a very effective particle accelerator. Energies up to GeVs have been observed in Solar energetic particle events. These events are often associated with solar flares and/or Coronal Mass Ejections. Understanding how particles are accelerated in these phenomena has been an outstanding problem in space plasma physics for a long time. Part of the reason is its practical (e.g. Space weather) and fundamental (cosmic ray origin) importance. In this conference we review recent progresses on this problem, with a balance between observations, theories and numerical simulations. Specific topics include 1) particle acceleration at flare site, 2) turbulence properties of the solar wind, 3) particle acceleration and transport in the inner heliosphere, 4) particle acceleration at the termination shock and heliosheath, and 5) particle acceleration at supernova remnant shocks.
Author : Donald V. Reames
Publisher : Springer
Page : 127 pages
File Size : 46,8 Mb
Release : 2017-03-10
Category : Science
ISBN : 9783319508719
This concise primer introduces the non-specialist reader to the physics of solar energetic particles (SEP) and systematically reviews the evidence for the two main mechanisms which lead to the so-called impulsive and gradual SEP events. More specifically, the timing of the onsets, the longitude distributions, the high-energy spectral shapes, the correlations with other solar phenomena (e.g. coronal mass ejections), as well as the all-important elemental and isotopic abundances of SEPs are investigated. Impulsive SEP events are related to magnetic reconnection in solar flares and jets. The concept of shock acceleration by scattering on self-amplified Alfvén waves is introduced, as is the evidence of reacceleration of impulsive-SEP material in the seed population accessed by the shocks in gradual events. The text then develops processes of transport of ions out to an observer. Finally, a new technique to determine the source plasma temperature in both impulsive and gradual events is demonstrated. Last but not least the role of SEP events as a radiation hazard in space is mentioned and a short discussion of the nature of the main particle telescope designs that have contributed to most of the SEP measurements is given.
Author : Olga E Malandraki,Norma B Crosby
Publisher : Unknown
Page : 208 pages
File Size : 48,5 Mb
Release : 2020-10-08
Category : Science
ISBN : 1013270045
Solar energetic particles (SEPs) emitted from the Sun are a major space weather hazard motivating the development of predictive capabilities. This book presents the results and findings of the HESPERIA (High Energy Solar Particle Events forecasting and Analysis) project of the EU HORIZON 2020 programme. It discusses the forecasting operational tools developed within the project, and presents progress to SEP research contributed by HESPERIA both from the observational as well as the SEP modelling perspective. Using multi-frequency observational data and simulations HESPERIA investigated the chain of processes from particle acceleration in the corona, particle transport in the magnetically complex corona and interplanetary space, to the detection near 1 AU. The book also elaborates on the unique software that has been constructed for inverting observations of relativistic SEPs to physical parameters that can be compared with space-borne measurements at lower energies. Introductory and pedagogical material included in the book make it accessible to students at graduate level and will be useful as background material for Space Physics and Space Weather courses with emphasis on Solar Energetic Particle Event Forecasting and Analysis. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
Author : Roland Diehl,Etienne Parizot,R. Kallenbach,Rudolf von Steiger
Publisher : Springer Science & Business Media
Page : 379 pages
File Size : 49,6 Mb
Release : 2013-04-17
Category : Science
ISBN : 9789401732390
R. DIEHL, R. KALLENBACH, E. PARIZOT and R. VON STEIGER / The Astrophysics of Galactic Cosmic Rays 3 I: KEY OBSERVATIONS ON GALACTIC COSMIC RAYS M. E. WIEDENBECK, N. E. YANASAK, A. c. CUMMINGS, AJ. DAVIS, I. S. GEORGE, R. A. LESKE, R. A. MEWALDT, E. C. STONE, P. L. HINK, M. H. ISRAEL, M. LIJOWSKI, E. R. CHRISTIAN and TT VON ROSENVINGE / The Origin of Primary Cosmic Rays: Constraints from ACE Elemental and Isotopic Composition Observations 15 R. A. MEWALDT, N. E. YANASAK, M. E. WIEDENBECK, AJ. DAVIS, w. R. BINNS, E. R. CHRISTIAN, A. C. CUMMINGS, P. L. HINK, R. A. LESKE, S. M. NIEBUR, E. C. STONE and TT VON ROSENVINGE / Radioactive Clocks and Cosmic-Ray Transport in the Galaxy 27 J. J. CONNELL / Cosmic-Ray Composition as Observed by Ulysses 41 R. RAMATY, R. E. LINGENFELTER and B. KOZLOVSKY / Spallogenic Light Elements and Cosmic-Ray Origin 51 E. PARIZOT / Galactic Cosmic Rays and the Light Elements 61 G. MEYNET, M. ARNOULD, G. PAULUS and A. MAEDER / Wolf-Rayet Star Nucleosynthesis and the Isotopic Composition of the Galactic Cosmic Rays 73 S. P. SWORDY / The Energy Spectra and Anisotropies of Cosmic Rays 85 G. TARLE and M. SCHUBNELL / Antiparticles 95 D. MULLER / Cosmic Rays Beyond the Knee 105 II: LESSONS FROM THE HELIOSPHERE G. M. MASON / Heliospheric Lessons for Galactic Cosmic-Ray Acceleration 119 R. A.
Author : Carolus J. Schrijver,George L. Siscoe
Publisher : Cambridge University Press
Page : 472 pages
File Size : 50,6 Mb
Release : 2010-05-06
Category : Science
ISBN : 9781107049048
Heliophysics is a fast-developing scientific discipline that integrates studies of the Sun's variability, the surrounding heliosphere, and the environment and climate of planets. The Sun is a magnetically variable star and for planets with intrinsic magnetic fields, planets with atmospheres, or planets like Earth with both, there are profound consequences. This 2010 volume, the second in this series of three heliophysics texts, integrates the many aspects of space storms and the energetic radiation associated with them - from causes on the Sun to effects in planetary environments. It reviews the physical processes in solar flares and coronal mass ejections, interplanetary shocks, and particle acceleration and transport, and considers many space weather responses in geospace. In addition to its utility as a textbook, it also constitutes a foundational reference for researchers in fields from heliophysics to climate science. Additional online resources, including lecture presentations and other teaching materials, are available at www.cambridge.org/9780521760515.
Author : Jack Randolph Jokipii,Charles P. Sonett,Mark S. Giampapa
Publisher : University of Arizona Press
Page : 1060 pages
File Size : 43,9 Mb
Release : 1997-10
Category : Science
ISBN : 0816518254
Contributors examine the physics of wind origin and physical phenomena in winds, including heliospheric shocks, magnetohydrodynamic turbulence, and kinetic phenomena--and their interactions with surrounding media. Contributions range from studies of the interstellar cloud surrounding the solar system to solar wind interaction with comets.
Author : H. Kunow,N.U. Crooker,J.A. Linker,R. Schwenn,R. Von Steiger
Publisher : Springer Science & Business Media
Page : 486 pages
File Size : 55,8 Mb
Release : 2007-12-03
Category : Science
ISBN : 9780387450889
The book is intended to provide scientists active in space physics research with an up-to-date status of the current understanding of CMEs and ICMEs and their effects in the heliosphere. It also serves the advanced graduate student with introductory material on this active field of research. New sets of open questions are presented for further studies as well as for new instruments and missions under development.
Author : E. Marsch,H.-J. Fahr,K. Scherer
Publisher : Elsevier
Page : 543 pages
File Size : 42,9 Mb
Release : 2001-09-19
Category : Science
ISBN : 9780080538280
The eleventh COSPAR colloquium The Outer Heliosphere: The Next Frontiers was held in Potsdam, Germany, from 24-28 July, 2000, and is the second dedicated to this subject after the first one held in Warsaw, Poland in 1989. Roughly a century has passed after the first ideas by Oliver Lodge, George Francis Fitzgerald and Kristan Birkeland about particle clouds emanating from the Sun and interacting with the Earth environment. Only a few decades after the formulation of the concepts of a continuous solar corpuscular radiation by Ludwig Bierman and a solar wind by Eugene Parker, heliospheric physics has evolved into an important branch of astrophysical research. Numerous spacecraft missions have increased the knowledge about the heliosphere tremendously. Now, at the beginning of a new millenium it seems possible, by newly developed propulasion technologies to send a spacecraft beyond the boundaries of the heliosphere. Such an Interstellar Proce will start the in-situ exploration of interstellar space and, thus, can be considered as the first true astrophysical spacecraft. The year 2000 appeared to be a highly welcome occassion to review the achievements since the last COSPAR Colloquia 11 years ago, to summarize the present developments and to give new impulse for future activities in heliospheric research.
Author : Nicole Meyer-Vernet,Michel Moncuquet,Filippo Pantellini
Publisher : Springer Science & Business Media
Page : 378 pages
File Size : 42,7 Mb
Release : 2011-06-28
Category : Science
ISBN : 9789401009041
Proceedings of the Second "Rencontres de l'observatoire", Observatoire de Paris, Meudon, France
Author : R. Kallenbach,Thérèse Encrenaz,Johannes Geiss,Konrad Mauersberger,Tobias Owen,François Robert
Publisher : Springer Science & Business Media
Page : 434 pages
File Size : 45,5 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789401001458
Proceedings of an ISSI Workshop, 14-18 January 2002, Bern, Switzerland
Author : National Research Council,Division on Engineering and Physical Sciences,Space Studies Board,Committee on Solar and Space Physics
Publisher : National Academies Press
Page : 68 pages
File Size : 41,6 Mb
Release : 2004-10-25
Category : Science
ISBN : 9780309165563
This report is the summary of a workshop held in May 2003 by the Space Studies Board's Committee on Solar and Space Physics to synthesize understanding of the physics of the outer heliosphere and the critical role played by the local interstellar medium (LISM) and to identify directions for the further exploration of this challenging environment.
Author : Lev Dorman
Publisher : Springer Science & Business Media
Page : 877 pages
File Size : 44,6 Mb
Release : 2006-09-02
Category : Science
ISBN : 9781402051012
Chapter 1 briefly describes the main properties of space plasmas and primary CR. Chapter 2 considers the problem of CR propagation in space plasmas described by the kinetic equation and different types of diffusion approximations. Chapter 3 is devoted to CR non-linear effects in space plasmas caused by CR pressure and CR kinetic stream instabilities with the generation of Alfvèn turbulence. In Chapter 4 different processes of CR acceleration in space plasmas are considered. The book ends with a list providing more than 1,300 full references, a discussion on future developments and unsolved problems, as well as Object and Author indexes.
Author : Rainer Schwenn,Eckart Marsch
Publisher : Springer Science & Business Media
Page : 360 pages
File Size : 40,5 Mb
Release : 2013-06-29
Category : Science
ISBN : 9783642753640
Physics of the Inner Heliosphere gives for the first time a comprehensive and complete summary of our knowledge of the inner solar system. Using data collected over more than 11 years by the HELIOS twin solar probes, one of the most successful ventures in unmanned space exploration, the authors have compiled six extensive reviews of the physical processes of the inner heliosphere and their relation to the solar atmosphere. Researchers and advanced students in space and plasma physics, astronomy, and solar physics will be surprised to see just how closely the heliosphere is tied to, and how sensitively it depends on, the sun. Volume 2 deals with particles, waves, and turbulence, with chapters on: - magnetic clouds - interplanetary clouds - the solar wind plasma and MHD turbulence - waves and instabilities - energetic particles in the inner solar system
Author : R. von Steiger
Publisher : Springer Science & Business Media
Page : 512 pages
File Size : 51,6 Mb
Release : 2007-12-14
Category : Science
ISBN : 9780387741833
This volume consists of papers developed from a joint ACE/ISSI symposium at the occasion of the eightieth birthday of Johannes Geiss. The symposium explored insights into the composition of solar-system and galactic matter that have been brought about by recent space missions, ground-based studies, and theoretical advances. Coverage includes linking primordial to solar composition, planetary samples, solar sources and fractionation processes, and interstellar gas and Cosmic rays.