Results 11 to 20 of about 1,232 (254)

How Reconnection-unfavored Magnetic Flux Emergence Suppresses Solar Filament Eruptions

open access: yesThe Astrophysical Journal Letters
Magnetic flux emergence is traditionally considered to be a key trigger of solar filament eruptions, yet its role in suppressing filament eruptions remains less understood.
Chengrui Zhou   +6 more
doaj   +3 more sources

Magnetic Fields in the Solar Convection Zone

open access: yesLiving Reviews in Solar Physics, 2009
Active regions on the solar surface are generally thought to originate from a strong toroidal magnetic field generated by a deep seated solar dynamo mechanism operating at the base of the solar convection zone.
Yuhong Fan
doaj   +2 more sources

The rotation–magnetism relationship in solar-type stars

open access: yesAstronomy & Astrophysics
Context. The rotation–activity relationship of G-type stars results from surface magnetic fields emerging from the interior. How the magnetic flux and its emergence rate scale with rotation rate are not well understood, both observationally and ...
Işık Emre   +3 more
doaj   +3 more sources

Magnetic flux emergence in the solar photosphere [PDF]

open access: yes, 2022
Die auffälligsten Magnetfeldstrukturen auf der Oberfläche der Sonne sind bipolare aktive Regionen. Diese magnetischen Komplexe bestehen aus einer Hierarchie von magnetischen Strukturen unterschiedlicher Ausmasse, von denen die größten die Sonnenflecken sind.
Cheung, Chun Ming Mark   +4 more
openaire   +3 more sources

Numerical Simulation of Solar Magnetic Flux Emergence Using the AMR–CESE–MHD Code

open access: yesThe Astrophysical Journal Supplement Series, 2022
Magnetic flux emergence from the solar interior to the atmosphere is believed to be a key process in the formation of solar active regions and driving solar eruptions.
Zhipeng Liu   +4 more
doaj   +1 more source

Interpreting magnetic helicity flux in solar flux emergence [PDF]

open access: yesJournal of Plasma Physics, 2019
Magnetic helicity flux gives information about the topology of a magnetic field passing through a boundary. In solar physics applications, this boundary is the photosphere and magnetic helicity flux has become an important quantity in analysing magnetic fields emerging into the solar atmosphere.
C. Prior, D. MacTaggart
openaire   +4 more sources

Invisible sunspots and rate of solar magnetic flux emergence [PDF]

open access: yesAstronomy & Astrophysics, 2007
A&A Lett, in press ...
Dalla, S., Fletcher, L., Walton, N.A.
openaire   +3 more sources

Magnetic Reconnection at the Earliest Stage of Solar Flux Emergence [PDF]

open access: yesThe Astrophysical Journal, 2018
Abstract On 2016 September 20, the Interface Region Imaging Spectrograph observed an active region during its earliest emerging phase for almost 7 hr. The Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory observed continuous emergence of small-scale magnetic bipoles with a rate of ∼1016 Mx s−1.
Hui Tian   +5 more
openaire   +3 more sources

Effects of Partial Ionization on Magnetic Flux Emergence in the Sun

open access: yesThe Astrophysical Journal, 2023
We have performed 3D numerical simulations to investigate the effect of partial ionization on the process of magnetic flux emergence. In our study, we have modified the single-fluid MHD equations to include the presence of neutrals and have performed two
Georgios Chouliaras   +2 more
doaj   +1 more source

Heliospheric consequences of solar activity in geophysical and interplanetary phenomena [PDF]

open access: yesGeofísica Internacional, 2004
We have done an analysis of the total solar magnetic flux, polar coronal hole area and sunspots. We investigate their long term evolution over several solar cycles and their possible relationship with interplanetary shocks, sudden storm commencements at ...
D. Maravilla   +2 more
doaj   +3 more sources

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