Results 1 to 10 of about 938 (164)
Quasi-periodic oscillations of GHz-band polarization in a black hole [PDF]
Nature CommunicationsRelativistic jets from accreting black holes radiate non-thermal emission which is highly variable in different time scales. Previous studies on black holes of different mass scales, including supermassive and stellar-mass black holes, only report flux ...
Wei Wang +12 more
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Mode lifetimes of stellar oscillations [PDF]
Astronomy and Astrophysics, 2009 letter accepted for publication in A& ...
Gunter Houdek +2 more
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Detection of stellar oscillations in HWVir
Open Astronomy, 2016 We present our analysis of K2 observations of the binary system, HWVir. We processed the raw Kepler data and used Fourier analysis to search for periodic signals that could be associated with pulsations.
Baran Andrzej S. +2 more
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Geosciences, 2019 Detecting and confirming terrestrial planets is incredibly difficult due to their tiny size and mass relative to Sun-like host stars. However, recent instrumental advancements are making the detection of Earth-like exoplanets technologically feasible ...
H. M. Cegla
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Stellar oscillations and stellar convection in the presence of an Urca shell [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 The problem of damping of stellar oscillations in presence of a Urca shell is solved analytically in a plane symmetrical approximation. Low-amplitude oscillations are considered. Oscillatory pressure perturbations induce beta reactions of the electron capture and decay in the thin layer around the Urca shell, leading to damping of oscillations.
Bisnovatyi-Kogan G S
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Tales of stellar and binary coevolution, told by stellar oscillations
Astronomy & AstrophysicsContext. Red giants are increasingly used as stellar population tracers due to their well-understood evolution and the availability of asteroseismic observables. However, stellar binarity can alter observable properties and introduce strong biases. Aims.
Beck Paul G.
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Asteroseismology of Close Binary Stars: Tides and Mass Transfer
Frontiers in Astronomy and Space Sciences, 2021 The study of stellar oscillations allows us to infer the properties of stellar interiors. Meanwhile, fundamental parameters such as mass and radius can be obtained by studying stars in binary systems. The synergy between binarity and asteroseismology can
Zhao Guo
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Solar-Like Oscillators in the Kepler Era: A Review
Frontiers in Astronomy and Space Sciences, 2021 Many late-type stars across the Milky Way exhibit observable pulsations similar to our Sun that open up a window into stellar interiors. The NASA Kepler mission, a space-based photometric telescope, measured the micro-magnitude luminosity fluctuations ...
Jason Jackiewicz
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Stellar 5 min oscillations [PDF]
Solar Physics, 1983 AbstractEstimates are given for the amplitudes of stochastically excited oscillations in Main Sequence stars and cool giants; these were obtained using the equipartition between convective and pulsational energy which was originally proposed by Goldreich and Keeley.
Jørgen Christensen-Dalsgaard +1 more
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Topological Modes in Stellar Oscillations
The Astrophysical Journal, 2022 Abstract Stellar oscillations can be of topological origin. We reveal this deep and so far hidden property of stars by establishing a novel parallel between stars and topological insulators. We construct an Hermitian problem to derive the expression of the stellar acoustic–buoyant frequency S of nonradial adiabatic pulsations.
Leclerc, Armand +4 more
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