Results 221 to 230 of about 7,344 (264)

Inferences on Stellar Activity and Stellar Cycles from Asteroseismology

Space Science Reviews, 2014
The solar activity cycle can be studied using many different types of observations, such as counting sunspots, measuring emission in the Ca II H&K lines, magnetograms, radio emissions, etc. One of the more recent ways of studying solar activity is to use the changing properties of solar oscillations.
William J. Chaplin, Sarbani Basu
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Stellar Rotation and Activity

Astrophysics and Space Science, 1998
This review is limited to solar-type stars (late-F to early-K main sequence stars) and to recent developments in the study of the evolution of angular momentum in those stars. Observations of rotation in young clusters are discussed, together with the models that have been put forth to account for what is seen.
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Stellar analogs of solar magnetic activity

Solar Physics, 1985
The techniques and principal results of observational studies of stellar activity are summarized. Both chromospheric and coronal emission clearly track surface magnetic field properties, but it is not well known how the detailed relation between the emission and surface magnetic fields varies with spectral type.
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The Solar-stellar Connection: Magnetic Braking and Stellar Activity

Publications of the Astronomical Society of Australia, 1992
AbstractThe theory of coronal structure and of the associated angular momentum transport by magneto-thermo-centrifugal winds is reviewed, with reference to recent observations of rapidly rotating late-type stars. In particular, the combined optical and X-ray studies of AB Doradus are consistent with the predicted picture of a hot, magnetically ...
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Solar and Stellar Magnetic Activity

2000
This timely volume provides the first comprehensive review and synthesis of current understanding of magnetic fields in the Sun and similar stars. Magnetic activity results in a wealth of phenomena - including starspots, non-radiatively heated outer atmospheres, activity cycles, deceleration of rotation rates, and even, in close binaries, stellar ...
C. J. Schrijver, C. Zwaan
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Stellar activity and rotation

1987
The most important signatures and parameters of stellar magnetic activity and their relation with global stellar parameters are briefly reviewed with the aim of indicating which are the most significant data that are required to constrain possible models of stellar activity. The sporadic and cyclic variability aspect is, particularly stressed, firstly,
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American Cancer Society nutrition and physical activity guideline for cancer survivors

Ca-A Cancer Journal for Clinicians, 2022
Cheryl L Rock, Cynthia A Thomson, Marian L Neuhouser   +2 more
exaly  

Stellar rotation and activity

Dedicated to an audience of graduate students and early-career researchers, this presentation aims at presenting our current state of knowledge relative to rotation and magnetic activity of solar-type stars in the context of spaceborne photometry. The first part of the presentation is dedicated to presenting observational evidences of rotation and ...
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Stellar Magnetic Activity, Activity Cycles, and Dynamos

1996
Observational aspects of magnetic activity in stars are discussed with emphasis on their implications for dynamo models. The dependence of chromospheric and coronal emission on rotation in convective stars is a strong, albeit indirect evidence for the occurrence of some kind of dynamo action in all late-type stars.
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Stellar activity

2000
I. Neill Reid, Suzanne L. Hawley
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