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Author : Roelf du Toit Strauss
Publisher :
ISBN 13 :
Total Pages : 278 pages
Book Rating : 4.:/5 (871 download)
Download or read book Modelling of Cosmic Ray Modulation in the Heliosphere by Stochastic Processes written by Roelf du Toit Strauss and published by . This book was released on 2013 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Roelf du Toit Strauss
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (871 download)
Download or read book Modelling of Cosmic Ray Modulation in the Heliosphere by Stochastic Processes written by Roelf du Toit Strauss and published by . This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmic rays -- Heliosphere -- Magneto-hydrodynamics -- Stochastic differential equations -- Jovian electrons -- Charge-sign dependent modulation -- Heliopause -- Heliospheric current sheet -- Propagation times -- Particle drifts -- Energy losses -- Kosmiese strale -- Heliosfeer -- Magneto-hidrodinamika -- Stogastiese differentiaalvergelykings -- Jupiter elektrone -- Ladingsafhanklike modulasie -- Heliopouse -- Heliosferiese neutrale vlak -- Voortplantingstye -- Deeltjie dryf -- Energie verliese.
Author :
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (12 download)
Download or read book A Stochastic Approach to the Modelling of Cosmic Rays in the Heliosphere written by and published by . This book was released on 2020 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar modulation -- Cosmic rays -- Stochastic differential equations -- Drift coefficient -- Drift reduction/scaling/suppression -- Diffusive processes -- Heliospheric current sheet -- Heliospheric magnetic field -- Solar activity -- Magnetic polarity cycles -- Solar turbulence -- Charge-sign dependent.
Author : Bernd Heber
Publisher : Springer
ISBN 13 : 9781461491996
Total Pages : 403 pages
Book Rating : 4.4/5 (919 download)
Download or read book Cosmic Rays in the Heliosphere written by Bernd Heber and published by Springer. This book was released on 2013-09-13 with total page 403 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a comprehensive synopsis of the current state of cosmic rays, their modulation and their effects in the Earth’s atmosphere. Leading scientists in the field assess the current state of our understanding of the spatial and temporal variations of galactic and anomalous cosmic rays in the Heliosphere, and their relation to effects of the Sun. The main objective is to understand the spatial and temporal variation of galactic and anomalous cosmic rays in the light of recent observations, theory and modeling by identifying the key mechanism(s) of cosmic ray modulation and how changes on the Sun relate to changes in the observed characteristics of cosmic rays in the Heliosphere; examining the current long-lasting solar minimum and understand its implications for solar-cycle variations and long-term variations; and interpreting the long-term variations of cosmogenic radionuclides in terms of solar variability and climate change on Earth. This volume is aimed at graduate students active in the fields of solar physics, space science, and cosmic ray physics. Originally published in Space Science Reviews journal, Vol. 176/1-4, 2013.
Author :
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.:/5 (946 download)
Download or read book Modeling of Cosmic-Ray Transport Processes written by and published by . This book was released on 1997 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main task has been the development, testing, and data comparison of a global time dependent and three dimensional heliospheric transport code of galactic cosmic rays. While the code is based on current standard and established theory of solar modulation of galactic cosmic rays, it is far more computationally demanding than what a typical application oriented study may require. The purpose for developing such a code was to afford the group a fully three dimensional solar modulation model by which a computationally efficient parametric set of simulated data can reliably and efficiently be developed. This development should afford the group both qualitative and quantitative advantage in this regard and relative to modulation codes currently available to the group which tend to be rudimentary one dimensional codes. The report is in 4 sections: (1) description of the basic physical model the new three dimensional transport code is based upon, (2) numerical implementation and various algorithms of the code, (3) sample calculations and comparison to available data, and (4) direction and recommendations for future work.
Author : Conrad David Steenberg
Publisher :
ISBN 13 :
Total Pages : 354 pages
Book Rating : 4.:/5 (859 download)
Download or read book Modelling of Anomalous and Galactic Cosmic Ray Modulation in the Outer Heliosphere written by Conrad David Steenberg and published by . This book was released on 1998 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Etienne Eben Vos
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (843 download)
Download or read book Cosmic Ray Modulation Processes in the Heliosphere written by Etienne Eben Vos and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmic rays -- Modulation -- Heliosphere -- Solar minimum -- Particle diffusion -- Particle drifts -- Galactic protons -- Galactic electrons -- Kosmiese strale -- Modulasie -- Heliosfeer -- Sonminimum -- Deeltjie diffusie -- Deeltjie dryf -- Galaktiese protone -- Galaktiese elektrone.
Author : Roelf du Toit Strauss
Publisher :
ISBN 13 :
Total Pages : 252 pages
Book Rating : 4.:/5 (682 download)
Download or read book Modelling of Anomalous Cosmic Rays written by Roelf du Toit Strauss and published by . This book was released on 2010 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anomalous cosmic rays -- Termination shock -- Heliosheath -- Modulation of anomalous cosmic ray oxygen -- Solar wind -- Multiple charged anomalous cosmic rays -- Heliosphere -- Stochastic acceleration -- Momentum diffusion -- Anomale kosmiese strale -- Heliosfeer -- Helioskil -- Modulasie van anomale suurstof -- Sonwind -- Terminasie-skok -- Meervoudig gelaaide anomale kosmiese strale -- Stogastiese versnelling -- Momentum-diffusie.
Author :
Publisher :
ISBN 13 :
Total Pages : 121 pages
Book Rating : 4.:/5 (129 download)
Download or read book Aspects of the Time-dependent Modulation of Galactic Cosmic Rays Throughout a Three-dimensional Heliosphere written by and published by . This book was released on 2021 with total page 121 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmic rays -- Heliosphere -- Stochastic differential equations -- Heliospheric current sheet -- Particle drifts.
Author : Etienne Eben Vos
Publisher :
ISBN 13 :
Total Pages : 189 pages
Book Rating : 4.:/5 (962 download)
Download or read book Modelling Charge-sign Dependent Modulation of Cosmic Rays in the Heliosphere written by Etienne Eben Vos and published by . This book was released on 2016 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmic rays -- Numerical modelling -- Heliosphere -- Modulation -- Particle drifts -- Particle diffusion -- Solar minimum -- Galactic protons -- Galactic electrons -- Galactic positrons -- Kosmiese strale -- Numeriese modellering -- Heliosfeer -- Modulasie -- Deeltjie dryf -- Deeltjie diffusie -- Sonaktiwiteit -- Galaktiese protone -- Galaktiese elektrone -- Galaktiese positrone.
Author : Lev Dorman
Publisher : Springer Science & Business Media
ISBN 13 : 1402051018
Total Pages : 877 pages
Book Rating : 4.4/5 (2 download)
Download or read book Cosmic Ray Interactions, Propagation, and Acceleration in Space Plasmas written by Lev Dorman and published by Springer Science & Business Media. This book was released on 2006-09-02 with total page 877 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Marius S. Potgieter
Publisher :
ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.3/5 (91 download)
Download or read book Heliospheric Cosmic Ray Transport, Modulation and Turbulence written by Marius S. Potgieter and published by . This book was released on 2005 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : L.A. Fisk
Publisher : Springer
ISBN 13 : 9789048150328
Total Pages : 0 pages
Book Rating : 4.1/5 (53 download)
Download or read book Cosmic Rays in the Heliosphere written by L.A. Fisk and published by Springer. This book was released on 2010-11-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In every scientific discipline there are milestones - periods of significant accom plishment when it is appropriate to pause and summarize the state of the field. Such is the case for the study of the behavior of cosmic rays in the heliosphere. We are just passing through solar minimum conditions, when the heliosphere has a well-ordered and relatively simple configuration. We have been fortunate to have an array of spacecraft - unprecedented in the history of space exploration and unlikely to be repeated for generations - to provide comprehensive measurements of cosmic rays throughout the heliosphere. Ulysses has completed its historic first exploration of the heliosphere at high heliographic latitudes. Pioneer and Voyager have been exploring the outer heliosphere. The durable IMP-8 and now the WIND spacecraft have provided detailed baseline measurements at Earth. Concurrently, there has been a steady improvement in theoretical understanding of cosmic ray behavior through the use of ever more sophisticated numerical models. This milestone in cosmic ray studies was celebrated with a Workshop on Cos mic Rays in the Heliosphere which was convened by L. A. Fisk, J. R. Jokipii.
Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
ISBN 13 : 9781729168264
Total Pages : 48 pages
Book Rating : 4.1/5 (682 download)
Download or read book Studies Using Imp, Voyager and Pioneer Cosmic Ray Data to Determine the Size of the Heliosphere written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-10-24 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this project was to use the cosmic ray data from the IMP, Voyager and Pioneer spacecraft in the heliosphere out to approximately 65 AU to estimate the size of the heliosphere. We used several techniques to develop a consistent picture of the size of the heliosphere. The first method used a response function approach which determined the intensity as a function of time by scaling the modulation effect as they move outward and eventually reach the boundary of the heliosphere. In this model the effects of transient cosmic ray disturbances is included. A second approach using the perturbation method in which drifts are considered as a perturbation to the standard diffusion-convection modulation models was not fully developed. In a third approach the location of the modulation boundary beyond the termination shock was estimated using observations of the intensity and radial gradients between Voyager 2 and Pioneer 10 along with new estimates of the interstellar intensity of more than 70 MeV galactic cosmic rays. Using this method we found that for 7 years, from 1983 to 1990, the modulation boundary remained constant at 83 +/- 5 AU. We infer from these studies that a modulation boundary can be estimated only by extrapolating the observed radial gradients when the solar magnetic field polarity is such that cosmic-ray particles are drifting in the heliosphere inward toward the Earth along the neutral sheet. The boundary distance is larger than the estimates of the location of the termination shock at 67 +/- 5 AU using the same method. Two other studies partially supported by this grant are attached. The first deals with the recovery period of the greater than 70 MeV cosmic rays in the outer heliosphere from 1992-1995. In the second paper we compare the rigidity dependence of the 11-year cosmic ray variation at the Earth in two cycles of opposite solar magnetic field polarity. Lockwood, John A. (Principal Investigator) Unspecified Center NAGW-3454
Author : Driaan Bisschoff
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (15 download)
Download or read book Cosmic Ray Propagation in the Galaxy and the Heliosphere written by Driaan Bisschoff and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cosmic rays -- Local interstellar spectra -- Cosmic ray propagation -- Solar modulation -- Numerical modelling.
Author : Christopher Paul Baker
Publisher :
ISBN 13 :
Total Pages : 384 pages
Book Rating : 4.:/5 (221 download)
Download or read book Cosmic Ray Modulation in the Heliosphere written by Christopher Paul Baker and published by . This book was released on 1993 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jack Randolph Jokipii
Publisher : University of Arizona Press
ISBN 13 : 9780816518258
Total Pages : 1060 pages
Book Rating : 4.5/5 (182 download)
Download or read book Cosmic Winds and the Heliosphere written by Jack Randolph Jokipii and published by University of Arizona Press. This book was released on 1997-10 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
