Results 61 to 70 of about 11,319 (196)
Tearing modes in solar coronal loops
The Astrophysical Journal, 1990 It is shown that solar coronal-like magnetic loops, that is loops emerging from and reentering heavy plasma, are unstable to tearing modes. In particular, the previously made assumption of line tying to the heavy plasma, resulting in stabilization, is shown to be inapplicable because the growth rate is sub-Alfvenic in the entire loop, including the ...
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The Astrophysical JournalWe report on a flare-driven coronal rain event observed along postflare loops during the decay phase of an X1.6-class solar flare. Although high-resolution studies of flare-driven coronal rain have been conducted, imaging spectroscopic studies are rare ...
Donguk Song +8 more
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Modeling Solar Energetic Neutral Atoms from Solar Flares and CME-driven Shocks
The Astrophysical Journal, 2023 We examine the production of energetic neutral atoms (ENAs) in solar flares and coronal mass ejection (CME)-driven shocks and their subsequent propagation to 1 au. Time profiles and fluence spectra of solar ENAs at 1 au are computed for two scenarios: (1)
Gang Li +7 more
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Coronal loops above an Active Region - observation versus model
, 2014 We conducted a high-resolution numerical simulation of the solar corona above a stable active region. The aim is to test the field-line braiding mechanism for a sufficient coronal energy input.
Bingert, Sven +2 more
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The Heating of Solar Coronal Loops by Alfvén Wave Turbulence [PDF]
The Astrophysical Journal, 2017 Abstract In this paper we further develop a model for the heating of coronal loops by Alfvén wave turbulence (AWT). The Alfvén waves are assumed to be launched from a collection of kilogauss flux tubes in the photosphere at the two ends of the loop.
A. A. van Ballegooijen +2 more
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MHD Waves and Coronal Seismology: an overview of recent results
, 2012 Recent observations have revealed that MHD waves and oscillations are ubiquitous in the solar atmosphere, with a wide range of periods. We give a brief review of some aspects of MHD waves and coronal seismology which have recently been the focus of ...
Uchida Y., Wang T., Zajtsev V. V.
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Suppression of parallel transport in turbulent magnetized plasmas and its impact on the non-thermal and thermal aspects of solar flares [PDF]
, 2016 The transport of the energy contained in electrons, both thermal and suprathermal, in solar flares plays a key role in our understanding of many aspects of the flare phenomenon, from the spatial distribution of hard X-ray emission to global energetics ...
Bian, Nicolas H. +2 more
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Flare-generated acoustic oscillations in solar and stellar coronal loops [PDF]
Astronomy & Astrophysics, 2004 Low-frequency longitudinal oscillations of a flaring coronal loop are studied numerically. In the recent work of Nakariakov et al., Astron. and Astrophys., 414, L25-L28 (2004) it has been shown that the time dependences of density and velocity in a flaring loop contain well-pronounced quasi-harmonic oscillations associated with a 2nd harmonic of a ...
Tsiklauri, D. +3 more
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Modeling the Propagation of Slow Magnetoacoustic Waves in a Multistranded Coronal Loop
The Astrophysical JournalWe study the propagation properties of slow magnetoacoustic waves in a multithermal coronal loop using a 3D MHD model, for the first time. A bundle of 33 vertical cylinders, each of 100 km radius, randomly distributed over a circular region of radius 1 ...
S. Krishna Prasad, T. Van Doorsselaere
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