Results 31 to 40 of about 1,589,837 (361)

Association Between Magnetic Pressure Difference and the Movement of Solar Pores

open access: yesThe Astrophysical Journal, 2023
Solar pores are closely related to the concentration, dissipation, and transportation of solar magnetic flux. Their observable characteristics can provide constraints on models and simulations of magnetic flux emergence and formation.
Merlin M. Mendoza, Chia-Hsien Lin
doaj   +1 more source

From Polarimetry to Helicity: Studies of Solar Magnetic Fields at the Huairou Solar Observing Station [PDF]

open access: yesScience China 2019, 2019
In this paper, we briefly introduce the basic questions in the measurements of solar magnetic fields and the possible error sources due to the approximation of the theory of radiation transfer of spectral lines in the solar atmosphere. We introduce some basic research progress in magnetic field measurement at Huairou Solar Observing Station of National
arxiv   +1 more source

VECTOR MAGNETIC FIELDS OF SOLAR GRANULATION [PDF]

open access: yesThe Astrophysical Journal, 2008
24 pages in total, 9 ...
Chunlan Jin, Jingxiu Wang, Meng Zhao
openaire   +4 more sources

Data-driven MHD simulation of successive solar plasma eruptions [PDF]

open access: yes, 2021
Solar flares and plasma eruptions are sudden releases of magnetic energy stored in the plasma atmosphere. To understand the physical mechanisms governing their occurrences, three-dimensional magnetic fields from the photosphere up to the corona must be studied.
arxiv   +1 more source

TANGLED MAGNETIC FIELDS IN SOLAR PROMINENCES [PDF]

open access: yesThe Astrophysical Journal, 2010
Solar prominences are an important tool for studying the structure and evolution of the coronal magnetic field. Here we consider so-called "hedgerow" prominences, which consist of thin vertical threads. We explore the possibility that such prominences are supported by tangled magnetic fields. A variety of different approaches are used.
A. A. van Ballegooijen   +1 more
openaire   +3 more sources

Magnetic Reconnection as the Driver of the Solar Wind

open access: yesThe Astrophysical Journal, 2023
We present EUV solar observations showing evidence for omnipresent jetting activity driven by small-scale magnetic reconnection at the base of the solar corona.
Nour E. Raouafi   +18 more
doaj   +1 more source

Meridional Circulations of the Solar Magnetic Fields of Different Strength [PDF]

open access: yesarXiv, 2023
The meridional circulation of the solar magnetic fields in Solar Cycles 21-24 was considered. Data from both ground-based and space observatories were used. Three types of time-latitude distributions of photospheric magnetic fields and their meridional circulations were identified depending on the magnetic field intensity.
arxiv  

Observational Study of Recurrent Jets Confined by Active Region Loops

open access: yesThe Astrophysical Journal, 2023
With high spatial and temporal resolution data from the Solar Dynamics Observatory and the New Vacuum Solar Telescope (NVST), we present observations of recurrent jets confined by coronal loops that occurred in the active region NOAA 11726 from 02:00 to ...
Liheng Yang   +6 more
doaj   +1 more source

Scaling laws of free magnetic energy stored in a solar emerging flux region [PDF]

open access: yes, 2014
This Letter reports scaling laws of free magnetic energy stored in a solar emerging flux region which is a key to understanding the energetics of solar active phenomena such as solar flares and coronal mass ejections. By performing 3-dimensional magnetohydrodynamic simulations that reproduce several emerging flux regions of different magnetic ...
arxiv   +1 more source

Solar Vortices and Magnetic Fields [PDF]

open access: yesNature, 1908
SEVERAL weeks ago I discussed with Prof. Hale the matter of solar vortices and magnetic fields, with reference to his recent discoveries, briefly described in NATURE for August 20 (p. 368). It did not seem to me probable that the effects could be accounted for by unequal diffusivity of the positive and negative ions, or by centrifugal separation, nor ...
openaire   +3 more sources

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