Results 21 to 30 of about 962 (184)
Impulsive Solar Energetic Particle Events: Extreme-Ultraviolet Waves and Jets
Frontiers in Astronomy and Space Sciences, 2022 Impulsive solar energetic particle (ISEP) events show peculiar elemental composition, with enhanced 3He and heavy-ion abundances, markedly different from our Solar System composition.
Radoslav Bučík
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Radiative damping of standing acoustic waves in solar coronal loops [PDF]
Astronomy & Astrophysics, 2008 Context. A detailed understanding of the physical processes that determine the damping timescales of magneto-acoustic waves is essential to interpret diagnostic results from the application of solar magneto-seismology.\ud Aims. The influence of the transition region and the importance of radiative emission, arising from equilibrium and non-equilibrium ...
Bradshaw, S.J., Erdelyi, R.
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Solar flares and coronal shock waves [PDF]
Journal of Geophysical Research: Space Physics, 2001 The ignition of coronal shock waves by solar flares is investigated confronting the results of a simple MHD model with the observations. Characteristics of type II bursts recorded in the metric and decametric wavelength range are compared with the properties of the microwave and soft X‐ray bursts of the associated flares.
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MHD Waves and Oscillations in Solar Coronal Waveguides [PDF]
, 2018 Perturbations of coronal structures by impulsive events such as solar flares generate waves which are interpreted with MHD theory. These waves allow plasma processes to be studied, and seismology of the local plasma parameters to be performed.
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MHD waves in the solar north polar coronal hole
Astronomische Nachrichten, 2010 AbstractThe effects, hitherto not treated, of the temperature and the number density gradients, both in the parallel and the perpendicular direction to the magnetic field, of O VI ions, on the MHD wave propagation characteristics in the solar North Polar Coronal Hole are investigated.
Devlen, E., Pekunlu, E. R.
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Comparison of Damping Mechanisms for Transverse Waves in Solar Coronal Loops [PDF]
The Astrophysical Journal, 2017 Abstract We present a method to assess the plausibility of alternative mechanisms to explain the damping of magnetohydrodynamic transverse waves in solar coronal loops. The considered mechanisms are resonant absorption of kink waves in the Alfvén continuum, phase mixing of Alfvén waves, and wave leakage.
María Montes-Solís, Iñigo Arregui
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Slow magnetoacoustic standing waves in a curved solar coronal slab [PDF]
Astronomy & Astrophysics, 2008 Summary: Aims. We consider a model of a two-dimensional solar coronal arcade to explore the effects of a curved magnetic field topology on excitation and attenuation of slow magnetoacoustic standing waves. Methods. The time-dependent ideal magnetohydrodynamic equations are solved numerically to find the spatial and temporal signatures of these waves ...
Ogrodowczyk, R. +2 more
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THREE-DIMENSIONAL PROPAGATION OF MAGNETOHYDRODYNAMIC WAVES IN SOLAR CORONAL ARCADES [PDF]
The Astrophysical Journal, 2010 We numerically investigate the excitation and temporal evolution of oscillations in a two-dimensional coronal arcade by including the three-dimensional propagation of perturbations. The time evolution of impulsively generated perturbations is studied by solving the linear, ideal magnetohydrodynamic (MHD) equations in the zero-beta approximation.
Rial, S. +4 more
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Coronal Heating & Solar Wind Acceleration by Drift Waves
Journal of Physics: Conference Series, 2015 An alternative approach to the coronal heating problem, based on the theory of drift waves, has been proposed. The drift mode is the only mode that is able to survive the drastically different (collisional/collisionless) extremes in the different layers of the solar atmosphere. As a matter of fact, this mode is over stable, i.e.
Poedts, S., Kanella, Ch, Lapenta, G.
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Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight
Experimental Physiology, EarlyView.Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley +1 more source