Results 21 to 30 of about 2,636,588 (34)

Surface rotation of solar-like oscillating stars [PDF]

open access: yesarXiv, 2014
In this work, we use different methods to extract the surface rotation rate of Kepler targets showing solar-like oscillations.
arxiv  

Soft X-ray microflares [PDF]

open access: yesarXiv, 2015
Soft X-ray solar bursts are studied. Weak bursts with powers up to 10-8 W/m2 were detected. All the events were confirmed by GOES observations. Parameters of these microflares are determined. A physical mechanism for the low-intensity solar events is discussed.
arxiv  

Hamiltonian distributed chaos in long-term solar activity [PDF]

open access: yesarXiv, 2018
It is shown that the long-term solar activity (represented by the dynamically covered monthly time series of the sunspot number for period 1750-2005yy) exhibits spectral properties of the Hamiltonian distributed chaos with spontaneously broken time translational symmetry.
arxiv  

Solar Corona Thermal Background and Energy Spectrum of the Weak Solar Soft X-ray Bursts [PDF]

open access: yesarXiv, 2016
The energy spectrum of the weak solar soft X-ray bursts are investigated using the data of the Interball project.
arxiv  

Effects of Rotation on Stellar p-Mode Frequencies [PDF]

open access: yesarXiv, 2011
Effects of stellar rotation on adiabatic oscillation frequencies of pressure modes are discussed. Methods to evaluate them are briefly exposed and some of their main results are presented.
arxiv  

Analysis of EUV Solar Spectrum with Gravity Induced Resonant Emission [PDF]

open access: yesarXiv, 2017
Gravity Induced Resonant Emission (GIRE) is a new phenomenon recently reported; we have analyzed the solar emissions on the basis of GIRE. We have computed the EUV solar spectrum using GIRE wave length as a part of studying coronal heating problem. We find all the solar observations converge in GIRE and the GIRE wave length is sufficient to study all ...
arxiv  

Excitation of stellar pulsations [PDF]

open access: yesarXiv, 2011
In this review I present an overview of our current understanding of the physical mechanisms that are responsible for the excitation of pulsations in stars with surface convection zones. These are typically cooler stars such as the Delta Scuti stars, and stars supporting solar-like oscillations.
arxiv  

Fundamental Stellar Astrophysics Revealed at Very High Angular Resolution [PDF]

open access: yesarXiv, 2009
A short review of recent results in long-baseline optical interferometry pertaining to fundamental stellar parameters and the future possibilities this area over the next decade. Included are discussions of accurate stellar masses, links between asteroseismology and interferometry, precise radii and effective temperatures, limb darkening and convection,
arxiv  

The Orbital Period of Three Cataclysmic Variables from WASP Data [PDF]

open access: yesarXiv, 2011
The publicly available WASP data are analysed to determine the orbital periods of the cataclysmic variables V378 Peg, SDSS J171456.78+585128.3 and ASAS 150946-2147.7.
arxiv  

Asteroseismology observations and space missions [PDF]

open access: yesarXiv, 2013
Contribution to a book entitled "Extraterrestrial seismology".
arxiv  

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