Observations Supporting the Role of Magnetoconvection in Energy Supply to the Quiescent Solar Atmosphere [PDF]
, 2006 Identifying the two physical mechanisms behind the production and sustenance of the quiescent solar corona and solar wind poses two of the outstanding problems in solar physics today.
Armstrong, James D. +6 more
core +3 more sources
EUV imaging and spectroscopy for improved space weather forecasting
Journal of Space Weather and Space Climate, 2020 Accurate predictions of harmful space weather effects are mandatory for the protection of astronauts and other assets in space, whether in Earth or lunar orbit, in transit between solar system objects, or on the surface of other planetary bodies. Because
Golub Leon +8 more
doaj +1 more source
Coronal spectral diagnostics: The coronal solar magnetism observatory (COSMO)
Frontiers in Astronomy and Space Sciences, 2022 The Need: Understanding and predicting the major phenomena taking place in the solar corona, such as flares and Coronal Mass Ejections (CMEs), the heating and evolution of the solar atmosphere, and the acceleration of the solar wind, are fundamental ...
Enrico Landi +9 more
doaj +1 more source
Directly comparing coronal and solar wind elemental fractionation
, 2020 As the solar wind propagates through the heliosphere, dynamical processes irreversibly erase the signatures of the near-Sun heating and acceleration processes. The elemental fractionation of the solar wind should not change during transit however, making
Baker, D. +3 more
core +1 more source
Slow solar wind acceleration through the middle corona: Spacecraft radio studies
Frontiers in Astronomy and Space Sciences, 2022 The “Middle Corona”, defined by recent consensus as the region spanning 1.5–6 solar radii (R⊙, heliocentric), is an important zone through which several structural and dynamic changes occur in coronal streamer regions. Among these is a regime change from
David B. Wexler +3 more
doaj +1 more source
Astronomy & Astrophysics, 2023 Context. Vortex flows have been found in the photosphere, chromosphere, and low corona in observations and simulations. It has been suggested that vortices play an important role in channeling energy and plasma into the corona. However, the impact of vortex flows on the corona has not been studied directly in a realistic setup. Aims. We investigate the
C. Breu +3 more
openaire +5 more sources
Structure and Dynamics of the 13/14 November 2012 Eclipse White-Light Corona [PDF]
, 2014 Continuing our series of observations of the motion and dynamics of the solar corona over the solar-activity cycle, we observed the corona from sites in Queensland, Australia, during the 13 (UT)/14 (local time) November 2012 total solar eclipse.
Babcock, Bryce A. +11 more
core +3 more sources
Fine structures of solar radio type III bursts and their possible relationship with coronal density turbulence [PDF]
, 2018 Solar radio type III bursts are believed to be the most sensitive signatures of near-relativistic electron beam propagation in the corona. A solar radio type IIIb-III pair burst with fine frequency structures, observed by the Low Frequency Array (LOFAR ...
Chen, Xingyao +5 more
core +2 more sources
The Magnetic Field in the Solar Atmosphere [PDF]
, 2014 This publication provides an overview of magnetic fields in the solar atmosphere with the focus lying on the corona. The solar magnetic field couples the solar interior with the visible surface of the Sun and with its atmosphere.
Solanki, Sami K. +2 more
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Long term changes in EUV and X-ray emissions from the solar corona and chromosphere as measured by the response of the Earth’s ionosphere during total solar eclipses from 1932 to 1999 [PDF]
Annales Geophysicae, 2001 Measurements of the ionospheric E region during total solar eclipses in the period 1932–1999 have been used to investigate the fraction of Extreme Ultra Violet and soft X-ray radiation, 8, that is emitted from the limb corona and chromosphere.
C. J. Davis +5 more
doaj +1 more source