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Found 9 entries in the Bibliography.
Showing entries from 1 through 9
Solar Electron Beam Velocities That Grow Langmuir Waves in the Inner Heliosphere
Solar accelerated electron beams, a component of space weather, are emitted by eruptive events at the Sun. They interact with the ambient plasma to grow Langmuir waves, which subsequently produce radio emission, changing the electrons motion through space. Solar electron beam-plasma interactions are simulated using a quasilinear approach to kinetic theory to probe the variations in the maximum electron velocity [\ensuremath\Xi ] responsible for Langmuir wave growth between the Sun s surface and 50 R$_\ensuremath\odot$ above ...
Lorfing, Camille; Reid, Hamish;
Published by: \solphys Published on: apr
YEAR: 2023   DOI: 10.1007/s11207-023-02145-2
Electrons; particle emission; Radio radiation; Langmuir waves; space weather
Using a Heliospheric Upwinding eXtrapolation (HUX) Technique to Magnetically Connect Different Regions of the Heliosphere
Understanding how coronal structure propagates and evolves from the Sun and into the heliosphere has been thoroughly explored using sophisticated MHD models. From these, we have a reasonably good working understanding of the dynamical processes that shape the formation and evolution of stream interaction regions and rarefactions, including their locations, orientations, and structure. However, given the technical expertise required to produce, maintain, and run global MHD models, their use has been relatively restricted. In ...
Published by: Frontiers in Physics Published on: may
YEAR: 2021   DOI: 10.3389/fphy.2021.679497
Heliosphere (711); Solar wind streams; coronal mass ejection; Magnetohydrodynamics; space weather
Exploiting white-light observations to improve estimates of magnetic connectivity
The \emph\Solar Orbiter\ (\emph\SolO\) and \emph\Parker Solar Probe\ (\emph\PSP\) missions have opened up new challenges for the heliospheric scientific community. Their proximity to the Sun and their high quality measurements allow us to investigate, for the first time, potential sources for the solar wind plasma measured in situ. More accurate estimates of magnetic connectivities from spacecraft to the Sun are required to support science and operations for these missions. We present a methodology to systematically compare ...
Poirier, Nicolas; Rouillard, Alexis; Kouloumvakos, Athanasios; Przybylak, Alexis; Fargette, Na; Pobeda, Rapha; eville, Victor; Pinto, Rui; Indurain, Mikel; Alexandre, Matthieu;
Published by: Frontiers in Astronomy and Space Sciences Published on: may
YEAR: 2021   DOI: 10.3389/fspas.2021.684734
White-Light Imagery; modeling; space weather; Sun: slow solar wind; Sun: magnetic fields; Sun: coronal streamers
Space weather: the solar perspective
The Sun, as an active star, is the driver of energetic phenomena that structure interplanetary space and affect planetary atmospheres. The effects of Space Weather on Earth and the solar system is of increasing importance as human spaceflight is preparing for lunar and Mars missions. This review is focusing on the solar perspective of the Space Weather relevant phenomena, coronal mass ejections (CMEs), flares, solar energetic particles (SEPs), and solar wind stream interaction regions (SIR). With the advent of the STEREO mis ...
Published by: Living Reviews in Solar Physics Published on: dec
YEAR: 2021   DOI: 10.1007/s41116-021-00030-3
Parker Data Used; space weather; Solar Physics; CMEs; flares; SEPs; Dynamic corona; magnetic field; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics
Possible advantages of a twin spacecraft Heliospheric mission at the Sun-Earth Lagrangian points L4 and L5
After the launch of STEREO twin spacecraft, and most recently of Solar Orbiter and Parker Solar Probe spacecraft, the next mission that will explore Sun-Earth interactions and how the Sun modulates the Heliosphere will be the "Lagrange" mission, which will consist of two satellites placed in orbit around L1 and L5 Sun-Earth Lagrangian points. Despite the significant novelties that will be provided by such a double vantage point, there will be also missing information, that are briefly discussed here. For future heliospheric ...
Published by: Frontiers in Astronomy and Space Sciences Published on: 03/2021
YEAR: 2021   DOI: 10.3389/fspas.2021.627576
space weather; Future missions; open problems; Solar Physics; Solar eruptions
Prediction of the In Situ Coronal Mass Ejection Rate for Solar Cycle 25: Implications for Parker Solar Probe In Situ Observations
The Parker Solar Probe (PSP) and Solar Orbiter missions are designed to make groundbreaking observations of the Sun and interplanetary space within this decade. We show that a particularly interesting in situ observation of an interplanetary coronal mass ejection (ICME) by PSP may arise during close solar flybys (<0.1 au). During these times, the same magnetic flux rope inside an ICME could be observed in situ by PSP twice, by impacting its frontal part as well as its leg. Investigating the odds of this situation, we forecas ...
Möstl, Christian; Weiss, Andreas; Bailey, Rachel; Reiss, Martin; Amerstorfer, Tanja; Hinterreiter, Jürgen; Bauer, Maike; McIntosh, Scott; Lugaz, No\; Stansby, David;
Published by: The Astrophysical Journal Published on: 11/2020
YEAR: 2020   DOI: 10.3847/1538-4357/abb9a1
Solar coronal mass ejection; Solar storm; Ejecta; space weather; Solar system; Solar wind; Solar Physics; interplanetary magnetic fields; Solar magnetic fields
ICME Evolution in the Inner Heliosphere
ICMEs (interplanetary coronal mass ejections), the heliospheric counterparts of what is observed with coronagraphs at the Sun as CMEs, have been the subject of intense interest since their close association with geomagnetic storms was established in the 1980s. These major interplanetary plasma and magnetic field transients, often preceded and accompanied by solar energetic particles (SEPs), interact with planetary magnetospheres, ionospheres, and upper atmospheres in now fairly well-understood ways, although their details ...
Luhmann, J.; Gopalswamy, N.; Jian, L.; Lugaz, N.;
Published by: Solar Physics Published on: 04/2020
YEAR: 2020   DOI: 10.1007/s11207-020-01624-0
CME; ICME; parker solar probe; Solar Probe Plus; space weather
Large gradual solar energetic particle events
Published by: Living Reviews in Solar Physics Published on: 09/2016
YEAR: 2016   DOI: 10.1007/s41116-016-0002-5
Solar activity; Solar energetic particles; coronal mass ejections; Shocks; Particle radiation; space weather
Estimation of solar energetic proton mission-integrated fluences and peak intensities for missions traveling close to the Sun
A method to estimate both solar energetic particle mission-integrated fluences and solar energetic particle peak intensities for missions traveling through the innermost part of the heliosphere (r \< 1 AU) is presented. By using (1) an extensive data set of particle intensities measured at 1 AU over the last three solar cycles, (2) successive launch dates for the mission traveling close to the Sun over the time interval spanned by our data set, and (3) appropriate radial dependences to extrapolate fluences and peak int ...
Published by: Space Weather Published on: 11/2011
YEAR: 2011   DOI: 10.1029/2011SW000708
Interplanetary Physics: Energetic particles (7514); Interplanetary Physics: Instruments and techniques; Interplanetary Physics: Solar cycle variations (7536); Parker Data Used; parker solar probe; Solar Probe Plus; space weather