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Magnetic fields play a crucial role at all stages of the formation of low mass stars and planetary systems. In the final stages, in particular, they control the kinematics of in-falling gas from circumstellar discs, and the launching and…

太阳与恒星天体物理 · 物理学 2015-05-19 S. G. Gregory , M. Jardine , C. G. Gray , J. -F. Donati

We examine the generation of a magnetic field in a solar-like star and its effects on the internal distribution of the angular velocity. We suggest that the evolution of a rotating star with magnetic fields leads to an equilibrium value of…

天体物理学 · 物理学 2009-11-11 P. Eggenberger , A. Maeder , G. Meynet

Magnetic field is playing an important role at all stages of star evolution from star formation to the endpoints. The main effects are briefly reviewed. We also show that O-type stars have large convective envelopes, where convective dynamo…

天体物理学 · 物理学 2009-11-13 André Maeder , Georges Meynet , Cyril Georgy , Sylvia Ekström

While magnetic fields have long been considered to be important for the evolution of magnetic non-degenerate stars and compact stars, it has become clear in recent years that actually all of the stars are deeply affected. This is…

太阳与恒星天体物理 · 物理学 2021-02-03 Koh Takahashi , Norbert Langer

Massive stars are crucial building blocks of galaxies and the universe, as production sites of heavy elements and as stirring agents and energy providers through stellar winds and supernovae. The field of magnetic massive stars has seen…

太阳与恒星天体物理 · 物理学 2015-05-27 Rolf Walder , Doris Folini , Georges Meynet

Here, I review some recent works on magnetism of cool, main-sequence stars, their winds and potential impact on surrounding exoplanets. The winds of these stars are very tenuous and persist during their lifetime. Although carrying just a…

太阳与恒星天体物理 · 物理学 2016-08-15 A. A. Vidotto

Magnetic fields have been detected in most if not all types of stars across the Hertzsprung-Russell diagram. Where present, these fields have the potential to significantly impact the evolution of their host stars. Furthermore, they…

太阳与恒星天体物理 · 物理学 2017-12-21 A. J. Martin

Magnetic fields play an important role at all stages of stellar evolution. In Sun-like stars, they are generated in the outer convective layers. Studying the large-scale magnetic fields of these stars enlightens our understanding of the…

太阳与恒星天体物理 · 物理学 2015-06-17 R. Fares

Magnetic activity is known to be correlated to the rotation period for moderately active main sequence solar-like stars. In turn, the stellar rotation period evolves as a result of magnetised stellar winds that carry away angular momentum.…

Magnetic fields constitute an energetic component of the interstellar medium in galaxies and hence can affect the formation of galactic structures. Sensitive resolved radio continuum observations together with statistical studies in galaxy…

星系天体物理 · 物理学 2018-11-20 Fatemeh S. Tabatabaei

The growing sample of magnetic stars shows a remarkable diversity in the properties of their magnetic fields. The overall goal of current studies is to understand the origin, evolution, and structure of stellar magnetic fields in stars of…

太阳与恒星天体物理 · 物理学 2019-10-16 Swetlana Hubrig , Markus Schöller

As a massive star evolves through multiple stages of nuclear burning on its way to becoming a supernova, a complex, differentially rotating structure is set up. Angular momentum is transported by a variety of classic instabilities, and also…

天体物理学 · 物理学 2009-11-10 A. Heger , S. E. Woosley , H. C. Spruit

An increasing amount of literature reports the detection of magnetic fields in asymptotic giant branch (AGB) stars and in central stars of planetary nebulae (PNs). These detections lead to claims that the magnetic fields are the main agent…

天体物理学 · 物理学 2009-11-10 Noam Soker

The spin evolution of main sequence stars has long been of interest for basic stellar evolution, stellar aging, stellar activity, and consequent influence on companion planets. Observations of older than solar late-type main-sequence stars…

太阳与恒星天体物理 · 物理学 2023-04-12 Ketevan Kotorashvili , Eric G. Blackman , James E. Owen

Mass loss is a determinant factor which strongly affects the evolution and the fate of massive stars. At low metallicity, stars are supposed to rotate faster than at the solar one. This favors the existence of stars near the critical…

天体物理学 · 物理学 2009-11-13 Cyril Georgy , Georges Meynet , André Maeder

Angular momentum evolution in low-mass stars is determined by initial conditions during star formation, stellar structure evolution, and the behaviour of stellar magnetic fields. Here we show that the empirical picture of angular momentum…

太阳与恒星天体物理 · 物理学 2015-06-03 Ansgar Reiners , Subhanjoy Mohanty

Magnetic fields are believed to play an important role in the evolution of molecular clouds, from their large scale structure to dense cores, protostellar envelopes, and protoplanetary disks. How important is unclear, and whether magnetic…

天体物理学 · 物理学 2007-05-23 Tyler L. Bourke , Alyssa A. Goodman

The evolution of angular momentum is a key to our understanding of star formation and stellar evolution. The rotational evolution of solar-mass stars is mostly controlled by magnetic interaction with the circumstellar disc and angular…

天体物理学 · 物理学 2009-11-13 Jochen Eisloeffel , Alexander Scholz

Neutron stars contain persistent, ordered magnetic fields that are the strongest known in the Universe. However, their magnetic fluxes are similar to those in magnetic A and B stars and white dwarfs, suggesting that flux conservation during…

天体物理学 · 物理学 2009-11-13 Andreas Reisenegger

The question whether magnetic fields play an important role in the processes of molecular cloud and star formation has been debated for decades. Recent observations have revealed a simple picture that may help illuminate these questions:…

星系天体物理 · 物理学 2015-06-19 Hua-bai Li , Alyssa Goodman , T. K. Sridharan , Martin Houde , Zhi-Yun Li , Giles Novak , Kwok Sun Tang
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