The problem of the height dependence of magnetic fields in sunspots
H Balthasar - Solar Physics, 2018 - Springer
To understand the physics of sunspots, it is important to know the properties of their
magnetic field, and especially its height stratification plays a substantial role. There are …
magnetic field, and especially its height stratification plays a substantial role. There are …
Long-term studies of photospheric magnetic fields on the Sun
We briefly review the history of observations of magnetic fields on the Sun, and describe
early magnetograps for full disk measurements. Changes in instruments and detectors, the …
early magnetograps for full disk measurements. Changes in instruments and detectors, the …
[图书][B] Solar Magnetism
H Zhang - 2023 - Springer
Solar physics is a fundamental branch of astrophysics, which has a long history. People
have noticed the activity of the sun for a long time. For example, as early as 3000 years ago …
have noticed the activity of the sun for a long time. For example, as early as 3000 years ago …
Analysis of vector magnetic fields in solar active regions by Huairou, Mees and Mitaka vector magnetographs
We analyze the vector magnetograms in several well-developed active regions obtained at
Huairou Solar Observing Station, National Astronomical Observatories of China, at Mees …
Huairou Solar Observing Station, National Astronomical Observatories of China, at Mees …
On spatial characteristics of five-minute oscillations in the sunspot umbra
NI Kobanov - Solar physics, 1990 - Springer
Using a differential method we have carried out observations of oscillations in six sunspots.
Spectral lines Fe i 5434 Å and Fe i 5576 Å were used. Horizontal waves are not observed in …
Spectral lines Fe i 5434 Å and Fe i 5576 Å were used. Horizontal waves are not observed in …
A study of the distribution of electric currents and current helicity in the photosphere at the growth stage of a bipolar active region
VM Grigoryev, LV Ermakova - Solar Physics, 2002 - Springer
The process of active region formation was researched by analyzing the densities of electric
current and electric current helicity in the photosphere. The observational data were …
current and electric current helicity in the photosphere. The observational data were …
Electric currents in a unipolar sunspot
AA Pevtsov, NL Peregud - Physics of Magnetic Flux Ropes, 1990 - Wiley Online Library
A study is made of longitudinal electric currents of a unipolar sunspot (NOAA No. 4744). The
pattern of longitudinal currents in the sunspot umbra indicates the presence of a common …
pattern of longitudinal currents in the sunspot umbra indicates the presence of a common …
Preliminary estimate of instrumental polarization effects in the LST-3 Large Solar Telescope
DE Kukushkin, AR Belan, AV Bakholdin… - Journal of Optical …, 2020 - opg.optica.org
This article presents a polarization calculation for the LST-3 large solar telescope. It
describes the interaction of the telescope mirrors and includes a calculation of the …
describes the interaction of the telescope mirrors and includes a calculation of the …
Space-time profile variations of some spectral lines and their influence upon Doppler velocity measurements
NI Kobanov - Solar physics, 1993 - Springer
A technique for high-sensitivity measurements of spectral line profile fluctuations is
suggested. Observations with spectral lines most commonly used to study the oscillations …
suggested. Observations with spectral lines most commonly used to study the oscillations …
On the origin of solar filament magnetic fields
VM Grigoryev, LV Ermakova - Astronomical and Astrophysical …, 1999 - Taylor & Francis
An analysis is made of vector-magnetograms and of the velocity network associated with
super-granulation in the photosphere, in the region of a quiescent filament. Observational …
super-granulation in the photosphere, in the region of a quiescent filament. Observational …