Cosmic Ray Intensity Variation During the Passage of Interplanetary Disturbances PDF Download
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Author: Rajesh Kumar Mishra
Publisher:
ISBN: 9783964879660
Category : Science
Languages : en
Pages : 0
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Book Description
Scientific Study from the year 2024 in the subject Physics - Astronomy, language: English, abstract: An investigation has been made to study the cosmic-ray decreases occurring during 2006 with respect to the arrival times of interplanetary shocks and magnetic clouds. We have identified three interplanetary magnetic cloud events during 5 February 2006, 13 April 2006 and 14 April 2006. The interplanetary magnetic field (B), north-south component of interplanetary magnetic field (Bz), solar wind velocity, sunspot number (R) and disturbance storm time index (Dst) associated with these events has been studied in the present work. Data (neutron monitor count rate) from Newark Neutron Monitor 9NM64 has been used. The north-south component of IMF (Bz) produce large geomagnetic disturbance on the onset of interplanetary magnetic clouds. The deviations in the interplanetary and solar wind plasma parameters are significantly correlated to the magnetic cloud events. The increase in Dst index, sunspot number (R) and Bz after the magnetic cloud event produces increase in cosmic ray intensity.
Author: Rajesh Kumar Mishra
Publisher:
ISBN: 9783964879660
Category : Science
Languages : en
Pages : 0
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Book Description
Scientific Study from the year 2024 in the subject Physics - Astronomy, language: English, abstract: An investigation has been made to study the cosmic-ray decreases occurring during 2006 with respect to the arrival times of interplanetary shocks and magnetic clouds. We have identified three interplanetary magnetic cloud events during 5 February 2006, 13 April 2006 and 14 April 2006. The interplanetary magnetic field (B), north-south component of interplanetary magnetic field (Bz), solar wind velocity, sunspot number (R) and disturbance storm time index (Dst) associated with these events has been studied in the present work. Data (neutron monitor count rate) from Newark Neutron Monitor 9NM64 has been used. The north-south component of IMF (Bz) produce large geomagnetic disturbance on the onset of interplanetary magnetic clouds. The deviations in the interplanetary and solar wind plasma parameters are significantly correlated to the magnetic cloud events. The increase in Dst index, sunspot number (R) and Bz after the magnetic cloud event produces increase in cosmic ray intensity.
Author: E.R. Dyer
Publisher: Springer Science & Business Media
ISBN: 9401031282
Category : Science
Languages : en
Pages : 210
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Book Description
Author: James Alfred Van Allen
Publisher:
ISBN:
Category : Cosmic ray variations
Languages : en
Pages : 48
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Book Description
Using a number of Geiger-Mueller tubes in the University of Iowa instruments on Pioneer 10 and Pioneer 11, we have measured the interplanetary intensity of cosmic rays E sub P> 80 meV) over a complete solar activity cycle and out to a helicocentric distance of over 32 AU. Free space values of the background corrections due to the radioisotope thermal generators were determined during passage of Pioneer 11 under the dense rings of Saturn during the 1 September 1979 encounter. These improved corrections and ones inferred therefrom for Pioneer 10 have supplanted earlier estimates and have been applied to all data.
Author: Rainer Schwenn
Publisher: Springer Science & Business Media
ISBN: 3642753647
Category : Science
Languages : en
Pages : 360
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Book Description
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: Rajesh Kumar Mishra
Publisher: GRIN Verlag
ISBN: 334698849X
Category : Science
Languages : en
Pages : 24
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Book Description
Scientific Essay from the year 2023 in the subject Physics - Astronomy, , language: English, abstract: This work aims to investigate the phenomenon of unusual variations in cosmic ray intensity in the period 1981-1994, particularly in the context of interplanetary magnetic clouds and low-amplitude anisotropic wave trains. The text provides a detailed analysis of the relationship between low-amplitude anisotropic wave trains and interplanetary perturbations, particularly with respect to changes in cosmic ray intensity. By analysing data from the Deep River Neutron Monitor, the interaction between high solar wind velocities, the orientation of the interplanetary magnetic field and the proton density is highlighted.
Author: Akademii︠a︡ nauk SSSR. I︠A︡kutskiĭ filial
Publisher:
ISBN:
Category : Cosmic rays
Languages : en
Pages : 138
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Book Description
Author: Mežduvedomstvennyj geofizičeskij Komitet pri Prezidiume AN SSSR.
Publisher:
ISBN:
Category :
Languages : en
Pages : 143
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Book Description
Author: A. Balogh
Publisher: Springer Science & Business Media
ISBN: 9780792360803
Category : Science
Languages : en
Pages : 508
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Book Description
This volume gives a comprehensive and integrated overview of current knowledge and understanding of corotating interaction regions (CIRs) in the solar wind. It is the result of a workshop at ISSI, where space scientists involved in the Ulysses, Pioneer, Voyager, IMP-8, Wind, and SOHO missions exchanged their data and interpretations with theorists in the fields of solar and heliospheric physics. The book provides a broad synthesis of current understanding of CIRs, which form at the interface between the fast solar wind originating in the northern and southern coronal holes and the slow solar wind that originates near and within coronal streamers surrounding the heliomagnetic equator. CIRs are the dominant structure in the heliosphere near and beyond Earth on the declining phase and near the minimum of the 11-year solar activity cycle. Particles energized at the shocks that bound CIRs at heliospheric distances beyond the orbit of Earth are the dominant energetic particle population observed in the outer heliosphere at these times. Papers included in this volume cover the subject of CIRs from their dissipation in the outer hemisphere, and include discussions of complexities associated with their evolution with distance from the Sun, their three-dimensional structure, and the myriad effects that CIRs have on energetic particles throughout the heliosphere. The book is intended to provide scientists active in space physics research with an up-to-date status report on current understanding of CIRs and their effects in the heliosphere, and also to serve the advanced graduate student with introductory material on this active field of research.
Author: L. I. Dorman
Publisher: North Holland
ISBN:
Category : Science
Languages : en
Pages : 702
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Book Description
Author: E. Marsch
Publisher: Elsevier
ISBN: 0080538282
Category : Science
Languages : en
Pages : 543
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Book Description
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.
