Results 11 to 20 of about 9,774 (241)
Five Solar Cycles of Solar Corona Investigations. [PDF]
Sol Phys, 2022 AbstractThese are the memoirs of fifty years of research in solar physics, closely related to the history of three of the major solar space missions, from the Solar Maximum Mission, SMM, to Solar Orbiter, at present in navigation toward vantage points closer and closer to the Sun.
Antonucci E.
europepmc +3 more sources
Heating mechanisms of the solar corona. [PDF]
Proc Jpn Acad Ser B Phys Biol Sci, 2017 The solar corona is a tenuous outer atmosphere of the Sun. Its million-degree temperature was discovered spectroscopically in the 1940s, but its origin has been debated since then without complete convergence. Currently there are two classes of models; the wave theory and the microflare/nanoflare theory.
Sakurai T.
europepmc +4 more sources
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
The Astrophysical Journal, 2023 We investigate the origin of mesoscale structures in the solar wind called microstreams, defined as enhancements in the solar wind speed and temperature that last several hours.
Bahaeddine Gannouni +2 more
doaj +1 more source
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
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ORFEES – a radio spectrograph for the study of solar radio bursts and space weather applications
Journal of Space Weather and Space Climate, 2021 Radio bursts are sensitive tracers of non-thermal electron populations in the solar corona. They are produced by electron beams and shock waves propagating through the corona and the heliosphere, and by trapped electron populations in coronal mass ...
Hamini Abdallah +10 more
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Co-existence of two plasma phases in solar and AGN coronas [PDF]
Serbian Astronomical Journal, 1998 Here we have juxtaposed two distant cosmic locations of the Sun and AGN where neutral hydrogen appears in a close connection with hot coronas. Besides the solar photosphere, chromosphere and prominences where the presence of neutral hydrogen is ...
Kubičela A. +4 more
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Angewandte Chemie, EarlyView.LUZ 51 is a relatively small and amphiphilic photosensitizer that accumulates in poorly‐vascularized tumors, is rapidly internalized by cancer cells, does not elicit skin photosensitivity and triggers robust immunological responses that reduce spontaneous metastasis.
Mafalda Penetra +7 more
wiley +2 more sources
Multiwavelength Observations of a B-class Flare Using XSM, AIA, and XRT
The Astrophysical Journal, 2023 We present multiwavelength observations by Chandrayaan-2/Solar X-ray Monitor, Solar Dynamics Observatory/Atmospheric Imaging Assembly, and Hinode/X-Ray Telescope (XRT) of a B-class flare observed on 2021 February 25, originating from an active region (AR
Yamini K. Rao +7 more
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Angewandte Chemie, EarlyView.Diazirines are three‐membered, nitrogen‐containing heterocycles that decompose under light or heat to generate carbenes. For the past two decades, they have served mainly as minimally invasive tags in photoaffinity labeling (PAL). More recently, their value as versatile carbene precursors has been recognized.
Dominik Schnalzer +4 more
wiley +2 more sources