Download or read book Anisotropy of the Cosmic ray Flux Caused by an Interplanetary Magnetic Field written by Ronald Rice Harrington and published by . This book was released on 1962 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Simple Model of the Interplanetary Magnetic Field The cosmic ray anisotropy written by David Peter Stern and published by . This book was released on 1964 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of the Interplanetary Magnetic Field on the Propagation of Cosmic Rays written by Kenneth G. McCracken and published by . This book was released on 1968 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a study of cosmic-ray propagation in the interplanetary magnetic field using spacecraft and neutron monitor data. Improved methods have been developed for mapping cosmic ray flux as a function of direction and time. This cosmic-ray mapping technique made possible a detailed study of the Forbush decrease observed on January 20, 1966. Using numerical filtration techniques developed for the purpose, demi-diurnal and dirunal components of cosmic radiation were studied. Two distinctly different anisotropies were identified in the course of studying the interrelationship of cosmic ray anistropy and the interplanetary magnetic field. One anisotropy is due to convective removal of cosmic radiation from the solar system by the radial flow of the solar wind. The other is due to diffusion of the cosmic radiation parallel to the lines of force of the interplanetary magnetic field. Temporal variability of Pioneer VII data during high counting rate periods has been studied. Study of some five days of data indicates continuous fluctuation of the cosmic radiation flux, with periods as short as five minutes occurring frequenctly. No diminution of fluctuation amplitude with time was observed. (Author).
Download or read book Sector Structure of the Interplanetary Magnetic Field and Anisotropy of 50 1000 GV Cosmic Radiation written by G. Erdõs and published by . This book was released on 1978 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Simple Model of the Interplanetary Magnetic Field Part 2 The Cosmic Ray Anisotropy written by United States. National Aeronautics and Space Administration and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Simple Model of the Interplanetary Magnetic Field Part 2 The Cosmic Ray Anisotropy written by United States. National Aeronautics and Space Administration and published by . This book was released on 1964 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cosmic Rays and Earth written by J.W. Bieber and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: The year 1998 marked the 50th anniversary of the invention of the neutron monitor, a key research tool in the field of space physics and solar-terrestrial relations. In honor of this occasion a workshop entitled 'Cosmic Rays and Earth' was organized to review the detection of cosmic rays at the surface and in the lower atmosphere of Earth, including the effect that this radiation has on the terrestrial environment. A special focus was the role of neutron monitors in the investigation of this radiation, on the science enabled by the unique dataset of the worldwide network of neutron monitors, and on continuing opportunities to use these data to solve outstanding problems. This book is the principal product of that workshop, integrating the contribu tions of all participants. Following a general summary of the workshop prepared by the editors, the volume leads off with a keynote article by Professor John Simpson describing his invention of the neutron monitor in 1948 and the early scientific discoveries made with this instrument.
Download or read book Anomalous Cosmic ray Anisotropy and Unidirectional Interplanetary Magnetic Field During 1954 written by Stanford University. Institute for Plasma Research and published by . This book was released on 1973 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Observations of the interplanetary magnetic field during solar minimum lead to the following important conclusions for cosmic ray modulation: (a) the interplanetary magnetic field does not show any sector structure for a few solar rotations, i.e. the field has polarity away from the sun during this interval, (b) cosmic ray diffusion in the interplanetary medium is essentially anisotropic for rigidity of the order of 10 GV (K parallel/K perpendicular approximately 0.01 ratio of diffusion coefficients calculated from the magnetic-field power spectra by Jokipii and Coleman). If diffusion occurs essentially along the magnetic field lines, the cosmic ray density U(r, T) is a symmetric function of the heliolatitude lambda with a minimum in the equatorial plane: U(r, T, lambda) proportional to a exp( -b cosine squared (lambda)). Therefore a cosmic ray density gradient across the solar equatorial plane exists and it depends on the size of the modulation region. (Modified author abstract).
Download or read book Symposium on Geophysical Aspects of Cosmic Rays written by and published by . This book was released on 1961 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Cosmic Rays written by L.I. Miroshnichenko and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: It turned out to be really a rare and happy occasion that we know exact1y when and how a new branch of space physics was born, namely, a physics of solar cosmic rays. It happened on February 28 and March 7, 1942 when the fIrst "cosmic ray bursts" were recorded on the Earth, and the Sun was unambiguously identifIed for the fIrst time as the source of high-velocity 10 particles with energies up to > 10 eV. Just due to such a high energy these relativistic particles have been called "solar cosmic rays" (SCR), in distinction from the "true" cosmic rays of galactic origin. Between 1942 and the beginning ofthe space era in 1957 only extremely high energy solar particle events could be occasionally recorded by cosmic ray ground-Ievel detectors and balloon borne sensors. Since then the detection techniques varied considerably and the study of SCR turned into essential part of solar and solar-terrestrial physics.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 1212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cosmic Ray Trajectories in Local Magnetic Fields written by Michael J. Gouge and published by . This book was released on 1973 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Several investigators have noticed sidereal and diurnal variations in the cosmic ray flux reaching the earth. The latter may be explained by periodic changes in the interplanetary magnetic field. The sidereal variations could possibly be produced by discrete galactic sources of cosmic ray particles. In order to investigate this effect the trajectories of 10 GEV particles arriving at the earth vertically at Annapolis, Maryland were numerically traced back through the terrestrial and interplanetary magnetic fields. It is found that the trajectory of an experimental maximum flux at 19 hours RA extrapolates backwards to the general direction of the galactic center for a variety of interplanetary sector magnetic field configurations. This indicates that discrete sources, most of which are located at the galactic center, could be responsible for the sidereal variations and the observed maximum flux at 19 hours RA. These results further suggest that the interplanetary magnetic field is not a randomizing field, as several previous investigators have indicated. (Author).
Download or read book Cosmic Ray Conference Papers written by and published by . This book was released on 1971 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Solar Particle Radiation Storms Forecasting and Analysis written by Olga E Malandraki and published by . This book was released on 2020-10-08 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Physics of the Inner Heliosphere II written by Rainer Schwenn and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Proceedings International Conference on Cosmic Rays written by and published by . This book was released on 1971 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
