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The magnetic field created in proton-proton and nucleus-nucleus collisions at ultra high energies are studied with models of point-like charges and hard sphere for distribution of the constituents for vacuum conditions. The various beam…

核理论 · 物理学 2019-07-03 V. A. Okorokov

We have spent 50 years in heated discussion over which populations of solar energetic particles (SEPs) are accelerated at flares and which by shock waves driven out from the Sun by coronal mass ejections (CMEs). The association of the large…

太阳与恒星天体物理 · 物理学 2017-09-19 Donald V. Reames

Based on our tool for the early diagnostics of solar eruption geoeffectiveness (EDSEG tool; Chertok et al., 2013, 2015, 2017), we have analyzed space weather disturbances that occurred in early September 2017. Two flares,…

太阳与恒星天体物理 · 物理学 2018-12-05 I. M. Chertok , A. V. Belov , A. A. Abunin

As a progenitor of NHE (Non High Energy) GRBs, we propose a (C+O) star and a neutron star (black hole) close binary system. Since the (C+O) star is tidally locked, a new born pulsar should be a milli second pulsar (MSP). Dynamo will…

天体物理学 · 物理学 2007-05-23 Takashi Nakamura

Solar small scale microwave bursts (SMBs), including microwave dot, spike, and narrow band type III bursts, are characterized with very short timescales, narrow frequency bandwidth, and very high brightness temperatures. Based on…

太阳与恒星天体物理 · 物理学 2015-06-16 Baolin Tan

The aim of this study is to investigate the magnetospheric disturbances effects on complicated nonlinear system of atmospheric processes. During substorms and storms, the ionosphere was subjected to rather a significant Joule heating, and…

大气与海洋物理 · 物理学 2017-11-27 P. A. Sedykh

We consider a fast magnetosonic multifluid shock as a representation of the solar-wind termination shock. We assume the action of the transition happens in a three-step process: In the first step, the upstream supersonic solar-wind plasma…

空间物理 · 物理学 2016-02-24 Hans J. Fahr , Daniel Verscharen

The recent superstorm of 2024 May 10-11 is the second largest geomagnetic storm in the space age and the only one that has simultaneous interplanetary data (there were no interplanetary data for the 1989 March storm). The May superstorm was…

空间物理 · 物理学 2024-08-28 Rajkumar Hajra , Bruce Tsatnam Tsurutani , Gurbax Singh Lakhina , Quanming Lu , Aimin Du

Formed in the aftermath of a core-collapse supernova or neutron star merger, a hot proto-neutron star (PNS) launches an outflow driven by neutrino heating lasting for up to tens of seconds. Though such winds are considered potential sites…

高能天体物理现象 · 物理学 2023-06-08 Dhruv K. Desai , Daniel M. Siegel , Brian D. Metzger

Four significant events of rapid $^{14}$C increase have taken place within the past several thousand years. The physical origin of these rapid increases is still a mystery but must be associated with extremely energetic cosmic processes.…

高能天体物理现象 · 物理学 2020-01-08 F. Y. Wang , Xinyu Li , D. O. Chernyshov , C. Y. Hui , G. Q. Zhang , K. S. Cheng

The development of cosmic ray air showers can be influenced by atmospheric electric fields. Under fair weather conditions these fields are small, but the strong fields inside thunderstorms can have a significant effect on the…

高能天体物理现象 · 物理学 2014-11-20 S. Buitink , T. Huege , H. Falcke , D. Heck , J. Kuijpers

A model of electric energization of the Solar Wind and Corona is developed, including electro-magnetic (EM) particle effects precluded by traditional magneto-hydro (MHD) assumptions. Using standard 1-D radial Solar models for particle…

等离子体物理 · 物理学 2023-10-12 Charles F. Driscoll

Aims. We studied the first multi-spacecraft high-energy solar energetic particle (SEP) event of solar cycle 25, which triggered a ground level enhancement (GLE) on 28 October 2021, using data from multiple observers that were widely…

Shock waves associated with fast coronal mass ejections (CMEs) accelerate solar energetic particles (SEPs) in the long duration, gradual events that pose hazards to crewed spaceflight and near-Earth technological assets, but the source of…

太阳与恒星天体物理 · 物理学 2021-03-26 David H. Brooks , Stephanie L. Yardley

We use multiwavelength data from space and ground based instruments to study the solar flares and coronal mass ejections (CMEs) on January 23, 2012 that were responsible for one of the largest solar energetic particle (SEP) events of solar…

Sixty years ago the first observation was published showing solar energetic particles (SEPs) with a sampling of chemical elements. Thus began study of the direct products of dynamic physics in the solar corona. As we have progressed from…

太阳与恒星天体物理 · 物理学 2021-08-19 Donald V. Reames

By coupling the EUropean Heliospheric FORcasting Information Asset (EUHFORIA) and the improved Particle Acceleration and Transport in the Heliosphere (iPATH) model, two energetic storm particle (ESP) events, originating from the same active…

Type-I bursts (i.e. noise storms) are the earliest-known type of solar radio emission at the metre wavelength. They are believed to be excited by non-thermal energetic electrons accelerated in the corona. The underlying dynamic process and…

太阳与恒星天体物理 · 物理学 2017-06-28 Chuanyang Li , Yao Chen , Bing Wang , Guiping Ruan , Shiwei Feng , Guohui Du , Xiangliang Kong

The Sun drives a supersonic wind which inflates a giant plasma bubble in our very local interstellar neighborhood, the heliosphere. It is bathed in an extremely variable background of energetic ions and electrons which originate from a…

Energetic (suprathermal) solar particles, accelerated in the interplanetary medium, contribute to the solar wind pressure, in particular during high solar activity periods. We estimated the effect of the increase of solar wind pressure due…