Results 41 to 50 of about 12,501,323 (353)

Magnetic Reconnection as the Driver of the Solar Wind [PDF]

open access: yesAstrophysical Journal, 2023
We present EUV solar observations showing evidence for omnipresent jetting activity driven by small-scale magnetic reconnection at the base of the solar corona.
Nour E. Raouafi   +18 more
semanticscholar   +1 more source

Solar wind dependence of ion parameters in the earth's magnetospheric region calculated from CLUSTER observations [PDF]

open access: yes, 2008
Moments calculated from the ion distributions (~0–40 keV) measured by the Cluster Ion Spectrometry (CIS) instrument are combined with data from the Cluster Flux Gate Magnetometer (FGM) instrument and used to characterise the bulk properties of the plasma
M. G. G. T. Taylor   +3 more
core   +1 more source

Solar flare effects on D-region ionosphere using VLF measurements during low- and high-solar activity phases of solar cycle 24

open access: yesEarth, Planets and Space, 2018
The effects of solar flares on the propagation of subionospheric VLF signals from NWC and NLK transmitter stations monitored at a low-latitude station, Suva (18.2°S, 178.4°E), Fiji, between December 2006 and December 2010 (an unprecedented solar minimum ...
Abhikesh Kumar, Sushi I Kumar
semanticscholar   +1 more source

Bulk plasma properties at geosynchronous orbit. [PDF]

open access: yes, 2005
We present a comprehensive study of plasma properties at geosynchronous orbit for electron and ion energies between ∼1 eV and ∼45 keV, between 1990 and 2001.
Liemohn, M. W.   +6 more
core   +1 more source

Linking long-term switchback variability at 1 au to solar-surface mechanisms: A 27-year statistical study

open access: yesAstronomy & Astrophysics
Context. Switchbacks–transient, large-angle deflections of the interplanetary magnetic field–pervade the solar wind, yet their origin remains disputed. Current ex situ theories, notably coronal jets and interchange reconnection, are typically tested on ...
Dai Fanzhuo   +5 more
doaj   +1 more source

Level and length of cyclic solar activity during the Maunder minimum as deduced from the active day statistics [PDF]

open access: yes, 2015
Aims. The Maunder minimum (MM) of greatly reduced solar activity took place in 1645‐1715, but the exact level of sunspot activity is uncertain as based, to a large extent, on historical gener ic statements of the absence of spots on the Sun. Here we aim,
J. M. Vaquero   +4 more
semanticscholar   +1 more source

Commission 10: Solar Activity

open access: yes, 2007
Commission 10 aims at the study of various forms of solar activity, including networks, plages, pores, spots, fibrils, surges, jets, filaments/prominences, coronal loops, flares, coronal mass ejections (CMEs), solar cycle, microflares, nanoflares ...
Benz, A.O.   +10 more
core   +1 more source

Solar activity

open access: yesEos, Transactions American Geophysical Union, 1991
Perhaps the most newsworthy item of recent times concerning solar activity is its unprecedented strength during the rising phase of its current 11‐year cycle. Examples of its potency include a major, well‐observed solar flare in March 1989 that launched an unusually powerful blast wave that, hitting Earth, caused spectacular low‐latitude auroras and ...
openaire   +1 more source

Assessment of the possibility of forecasting hydrometeorological extremes using the solar activity index [PDF]

open access: yes, 2023
The paper presents the results of research of correlation fields of the relationship between Wolf number and hydrometeorological parameters (air and water temperature, annual precipitation, snow cover height) for a number of points in the western sector ...
Kotova E.I., Miskevich I.V.
core   +1 more source

Scale sequentially CLEAN for Mingantu Spectral Radioheliograph

open access: yesSolar-Terrestrial Physics, 2019
MingantU SpEctral Radioheliograph (MUSER) is a solar-dedicated radio heliograph, adopting aperture synthesis technique to image the Sun in the frequency range of 0.4 GHz to 15 GHz.
Jun Cheng, Yihua Yan, Dong Zhao, Long Xu
doaj   +1 more source

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