[PDF] Top 20 Stellar magnetic activity and exoplanets

... of magnetic fields in the ...and magnetic fields are closely related [20], [21] then further proposed, that these fast rotating red giants would also show a higher magnetic ... See full document

... Abstract. Stellar magnetic activity is an important factor in the formation and evolution of ...exoplanets. Magnetic phenomena like stellar flares, coronal mass ejections, and ... See full document

... solar magnetic dynamo during that ...of activity cycles was, and also the butterfly diagram and the other laws of current solar activity just after the arrival of the Sun at the ...solar ... See full document

... then magnetic winds driven by dynamo action will act to spin-down the star as they carry away mass and so angular ...of stellar rotation rates was first discovered in the young clusters α Persei and the ... See full document

... between stellar rotation and magnetic activity for a sample of 134 bright, nearby M dwarfs observed in the Kepler Two-Wheel (K2) mission during campaigns ...the activity level changes ... See full document

... sequence, subgiant, and low-luminosity red giant stars, which were selected from a synthetic Milky Way population simulated with TRILEGAL (Girardi et al., 2005). The selection criteria are the same as for the real ... See full document

... the stellar magnetic activity cycle for HD ...plus stellar activity ...plus stellar activity ...long-period stellar activity signal has been ...period ... See full document

... X-ray magnetic cycle is aligned with its S-index ...that magnetic cycles are not always observable in X-rays (McIvor et ...large-scale magnetic geometry field coincides with its 120-day S-index and ... See full document

... the full time series, comprising quarters 0–17 (the spacecraft reori- entated itself every ∼ 90 d, separating the data into quarters). The PDC light curves are explicitly designed to remove instrumental variability while ... See full document

... chromospheric activity cycle of about 3 ...large-scale magnetic field show strong variations at yearly ...large-scale magnetic field geometry evolves over its activity cycle, we focus on ... See full document

... large-scale magnetic field geometry of τ Boo is reconstructed using the tomographic technique of Zeeman-Doppler imaging ...the stellar surface using a series of local Stokes V profiles which are computed ... See full document

... map stellar magnetic fields, many of which display strong bands of azimuthal fields that are ...with magnetic maps, with masses in the range ...the stellar rotation period with fast rotators ... See full document

... map stellar magnetic fields, many of which display strong bands of azimuthal fields that are ...with magnetic maps, with masses in the range ...the stellar rotation period with fast rotators ... See full document

... the stellar magnetic field and neglect the wind ram ...the magnetic pressure can be high, especially at younger ...the magnetic or ram pressures are too ... See full document

... large-scale magnetic fields of stars over a large range of spectral types, rotation periods and ...its activity cycle. In this paper, we examine the magnetic properties of stars with existing ... See full document

... in activity proxies sensitive to the solar in- terior right out to the interplanetary medium [see 2, for a recent ...majority activity proxies associated with the QBO. To summarize the Sun’s magnetic ... See full document

... the stellar magnetic field and neglect the wind ram ...the magnetic pressure can be high, especially at younger ...the magnetic or ram pressures are too ... See full document

... The analysis presented so far considers each system at a particular snapshot in time. However, the present conditions of a given system are determined by its history and will, in turn, de- termine the future evolution of ... See full document

... while active branch stars are able to generate strong toroidal fields. However, it is currently unclear if this result is due to a degeneracy in our sample (see sec- tion 4.3 for further discussion). In this table, we ... See full document

... 1/2 is still within the range of the scatter in the diagram. This indicates that active periods of the solar cycle would have more coronal null points than inactive periods and, consequentially, more possible locations ... See full document