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It is becoming increasingly clear that our modern technological society is vulnerable to the impacts of severe solar storms, radiation, particle and geomagnetic disturbances. However, the potential severity of these extreme solar events and their probability of occurring are unknown. What can we expect from the Sun? What could the most severe solar particle storms look like? Does the Sun have an unlimited ability to produce severe storms? Can a destructive "black swan" event occur? Direct solar data covers only several decades, a period too short to answer these questions. Fortunately, other indirect ways to study these possibly rare extreme solar storms have been discovered, paving the way for analysis of these events on the multi-millennial time scale. At present, studies of extreme solar events are growing, forming a new research discipline. This book, written by leaders in the corresponding aspects of the field, presents a first systematic review of the current state of the art
Extreme Solar Particle Storms: The hostile Sun provides a consolidated review of our current understanding of extreme solar events, or black swans, that leave our technological society vulnerable. Written by experts at the forefront of the growing field of solar storms, this book will be of interest to students and researchers, as well as those curious about the threat that our Sun poses to the modern world.
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 book is published with open access under a CC BY license.
Examines the emerging physical science of space weather and the impact the sun and solar storms have on Earth life.
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.
Published by the American Geophysical Union as part of the Special Publications Series. From the Sun demystifies auroras, magnetic storms, solar flares, cosmic rays and other displays of Sun-Earth interactions. The authors, all well-known figures in space science, explain how solar eruptions affect human technology and society in articles intended for the nonspecialist and adapted from Eos, Transactions, American Geophysical Union. One of the most appealing features is a comprehensive glossary of the terminology necessary to read almost any volume on Sun-Earth connections.
This final report consists of a brief administrative statement describing the purpose and progress of the research, the funding of the research, the personnel who participated in the program, and brief description of the scientific reports prepared under this contract. Three scientific reports have been completed: Survey and Comparison of Solar Activity and Energetic Particle Emission in 1970; Solar and Geophysical Associations with the Principal Energetic Particle Events in 1971 and 1972; and Study of Geomagnetic Storms and Solar Flares in the Years of Increasing Solar Activity in Cycles 19 and 20 (1955-1957; 1965-1968).