Coronal magnetic loops

V.V. Zaitsev^a, A.V. Stepanov^b
^aFederal Research Center A.V. Gaponov-Grekhov Institute of Applied Physics of the Russian Academy of Sciences, ul. Ulyanova 46, Nizhny Novgorod, 603000, Russian Federation
^bThe Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, Pulkovskoe shosse 65/1, St. Petersburg, 196140, Russian Federation

The goal of this review is to outline some new ideas in the physics of coronal magnetic loops, the fundamental structural elements of the atmospheres of the Sun and flaring stars, which are involved in phenomena such as stellar coronal heating, flare energy release, charged particle acceleration, and the modulation of optical, radio, and X-ray emissions. The Alfvén — Carlqvist view of a coronal loop as an equivalent electric circuit allows a good physical understanding of loop processes. Describing coronal loops as MHD-resonators explains various ways in which flaring emissions from the Sun and stars are modulated, whereas modeling them by magnetic mirror traps allows one to describe the dynamics and emission of high-energy particles. Based on these approaches, loop plasma and fast particle parameters are obtained and models for flare energy release and stellar corona heating are developed.

PACS: 52.35.−g, 96.60.−j, 97.10.Sj (all)
DOI: 10.1070/PU2008v051n11ABEH006657
URL: https://ufn.ru/en/articles/2008/11/b/
Web of Science

000264020300002
Scopus

2-s2.0-68149161150
ADS NASA

2008PhyU...51.1123Z
Citation: Zaitsev V V, Stepanov A V "Coronal magnetic loops" Phys. Usp. 51 1123–1160 (2008)

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Оригинал: Зайцев В В, Степанов А В «Корональные магнитные арки» УФН 178 1165–1204 (2008); DOI: 10.3367/UFNr.0178.200811b.1165

References (212) Cited by (71) Similar articles (20) ↓

A.T. Altyntsev, N.S. Meshalkina et al “Subsecond pulses in microwave emission from the Sun” Phys. Usp. 66 691–703 (2023)
V.L. Ginzburg, V.V. Zheleznyakov, V.V. Zaitsev “Coherent radio-emission mechanisms and magnetic pulsar models” Sov. Phys. Usp. 12 378–398 (1969)
P.A. Gritsyk, B.V. Somov “Modern analytic models of acceleration and propagation of electrons in solar flares” Phys. Usp. 66 437–459 (2023)
A.Yu. Potekhin “The physics of neutron stars” Phys. Usp. 53 1235–1256 (2010)
B.P. Filippov “Mass ejections from the solar atmosphere” Phys. Usp. 62 847–864 (2019)
M.I. Panasyuk, L.I. Miroshnichenko “Particle acceleration in space: a universal mechanism?” Phys. Usp. 65 379–405 (2022)
L.S. Ledentsov, B.V. Somov “Discontinuous plasma flows in magnetohydrodynamics and in the physics of magnetic reconnection” Phys. Usp. 58 107–133 (2015)
A.G. Zhilkin, D.V. Bisikalo, A.A. Boyarchuk “Flow structure in magnetic close binary stars” Phys. Usp. 55 115–136 (2012)
M.V. Kuzelev, A.A. Rukhadze “Spontaneous and stimulated emission induced by an electron, electron bunch, and electron beam in a plasma” Phys. Usp. 51 989–1018 (2008)
L.I. Men’shikov “Superradiance and related phenomena” Phys. Usp. 42 107 (1999)
N.I. Shakura, K.A. Postnov et al “Quasi-spherical subsonic accretion in X-ray pulsars” Phys. Usp. 56 321–346 (2013)
I.I. Metelskii, V.F. Kovalev, V.Yu. Bychenkov “Relativistic-nonlinear resonant absorption and generation of harmonics of electromagnetic radiation in an inhomogeneous plasma” Phys. Usp. 67 429–463 (2024)
A.V. Timofeev “Electromagnetic waves in a magnetized plasma near the critical surface” Phys. Usp. 47 555–582 (2004)
A.M. Bykov, I.N. Toptygin “Instabilities of a multicomponent plasma with accelerated particles and magnetic field generation in astrophysical objects” Phys. Usp. 50 141–174 (2007)
G.D. Fleishman, V.F. Mel’nikov “Millisecond solar radio spikes” Phys. Usp. 41 1157–1189 (1998)
A.V. Nedospasov “Striations” Sov. Phys. Usp. 11 174–187 (1968)
M. Danos, B.S. Ishkhanov et al “Giant dipole resonance and evolution of concepts of nuclear dynamics” Phys. Usp. 38 1297–1307 (1995)
P.V. Ratnikov, A.P. Silin “Two-dimensional graphene electronics: current status and prospects” Phys. Usp. 61 1139–1174 (2018)
A.V. Gurevich “Nonlinear effects in the ionosphere” Phys. Usp. 50 1091–1121 (2007)
A.M. Fridman, D.V. Bisikalo “The nature of accretion disks of close binary stars: overreflection instability and developed turbulence” Phys. Usp. 51 551–576 (2008)

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