Results 141 to 150 of about 4,300 (180)
A new formulation of the starspot model, and the consequences of starspot structure
The Astrophysical Journal, 1987 openaire +1 more source
Torus-stable zone above starspots [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Whilst intense solar flares are almost always accompanied by a coronal mass ejection (CME), reports on stellar CMEs are rare, despite the frequent detection of stellar ‘super flares’. The torus instability of magnetic flux ropes is believed to be one of the main driving mechanisms of solar CMEs.
Xudong Sun, Tibor Török, Marc DeRosa
exaly +3 more sources
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Starspot simulations for Kepler
Astronomische Nachrichten, 2012AbstractThe NASA Kepler mission yields an unprecedented amount of data in the form of photometric light curves. Apart from valuable information on exoplanets and stellar pulsations, the light curves contain rotation signals from starspots crossing the stellar disk. These modulations of the light curves are modeled and 105 simulations are carried out to
Nielsen, M.B., Karoff, C.
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Solar Physics, 1992
Recent observations of brightness variations on the sun during the solar cycle have motivated us to re-examine the widely held view that cool, dark starspots, covering a significant fraction of the star, are the centers of magnetic activity on BY Dra stars.
Bj�rn R. Pettersen +2 more
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Recent observations of brightness variations on the sun during the solar cycle have motivated us to re-examine the widely held view that cool, dark starspots, covering a significant fraction of the star, are the centers of magnetic activity on BY Dra stars.
Bj�rn R. Pettersen +2 more
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On the temperature of starspots
2022Таврический астрофизический журнал, Выпуск 3 (2) 2022, Pages 27 ...
Alekseev, I.Yu., Gershberg, R.E.
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2008
The past two decades have seen remarkable advances in observations of sunspots and their magnetic fields, in imaging of spots and fields in distant stars and in associated theoretical models and numerical simulations. This book provides a comprehensive combined account of the properties of sunspots and starspots. It covers both observations and theory,
John H. Thomas, Nigel O. Weiss
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The past two decades have seen remarkable advances in observations of sunspots and their magnetic fields, in imaging of spots and fields in distant stars and in associated theoretical models and numerical simulations. This book provides a comprehensive combined account of the properties of sunspots and starspots. It covers both observations and theory,
John H. Thomas, Nigel O. Weiss
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Astronomische Nachrichten, 2002
The discovery of exoplanets has resulted from a significant increase in the precision of stellar radial velocity measurements. In the past decade this precision has improved from several hundreds of ms–1 to a few ms–1. In the near future astrometric measurements will make a similar increase in their precision by factors of several hundred.
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The discovery of exoplanets has resulted from a significant increase in the precision of stellar radial velocity measurements. In the past decade this precision has improved from several hundreds of ms–1 to a few ms–1. In the near future astrometric measurements will make a similar increase in their precision by factors of several hundred.
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Astrophysics and Space Science, 1988
Formulae are set out from which the light loss may be derived in a close binary system in which a component affected by a ‘starspot’, of the type considered previously (Budding, 1977) is also in eclipse, in such a way that the starspot itself is undergoing eclipse.
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Formulae are set out from which the light loss may be derived in a close binary system in which a component affected by a ‘starspot’, of the type considered previously (Budding, 1977) is also in eclipse, in such a way that the starspot itself is undergoing eclipse.
openaire +1 more source