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Superflares on solar-type stars
Nature, 2012Solar flares are caused by the sudden release of magnetic energy stored near sunspots. They release 10(29) to 10(32) ergs of energy on a timescale of hours. Similar flares have been observed on many stars, with larger 'superflares' seen on a variety of stars, some of which are rapidly rotating and some of which are of ordinary solar type.
Hiroyuki, Maehara +8 more
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Present Observational Status of Solar-type stars
Astrophysics and Space Science, 2003Observing stellar oscillations provides a powerful probe for studying stellar interiors. The frequencies of these modes depend on the properties of the star and give strong constraints on stellar models and evolution theories. The five-minute oscillations in the Sun, induced by stochastic excitation of its convective zone, have provided a wealth of ...
François Bouchy, Fabien Carrier
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Oxygen Abundances in Solar-Type Stars
Astrophysics and Space Science, 1999The absolute solar oxygen abundance, log e⨀ = 8.80 ± 0.06, has been determined from various oxygen abundance indicators in different solar atlases, and a new method is proposed to test collision rate coefficients for the NLTE model of O i. Using effective temperatures derived from Balmer lines, oxygen abundances from O i 7773 triplets in 83 solar-type ...
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The dynamo layer in solar‐type stars
Astronomische Nachrichten, 2005AbstractThe role of the dynamo layer for dynamo action in solar‐type stars is discussed. As a result of instabilities, magnetic flux is expelled from the dynamo layer into the convection zone above it. The resulting partial evacuation of the dynamo layer and amplification of the deep‐seated toroidal magnetic field is investigated in an illustrative 3D ...
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Science, 2017
Stellar Activity The Sun's activity, including sun-spot activity, varies on an 11-year cycle driven by changes in its magnetic field. Other nearby solar-type stars have their own cycles, but the Sun does not seem to match their behavior. Strugarek et al.
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Stellar Activity The Sun's activity, including sun-spot activity, varies on an 11-year cycle driven by changes in its magnetic field. Other nearby solar-type stars have their own cycles, but the Sun does not seem to match their behavior. Strugarek et al.
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Rotational evolution of solar-type stars
Astrophysics and Space Science, 1981The aim of the present investigation has been to consider rotational evolution of solar-type stars simulated by a polytropic model that possesses differential rotation of Clement's type. A properly defined reduction factor moderates the effects of such a rotation.
V. S. Geroyannis, G. A. Antonakopoulos
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Scalable fabrication and coating methods for perovskite solar cells and solar modules
Nature Reviews Materials, 2020Kai Zhu, Nam-Gyu Park, Park Nam-Gyu
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Stability challenges for the commercialization of perovskite–silicon tandem solar cells
Nature Reviews Materials, 2023Leiping Duan +2 more
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Low-bandgap conjugated polymers enabling solution-processable tandem solar cells
Nature Reviews Materials, 2017Gang Li, Yang Yang, Wei-Hsuan Chang
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