Results 21 to 30 of about 5,252 (266)
Non-Radial Oscillations in δ Scuti Stars and Rapidly Oscillating AP Stars [PDF]
Highlights of Astronomy, 1986 AbstractThe present state of our knowledge of non-radial oscillations in δ Scuti stars and Rapidly Oscillating Ap stars is discussed primarily from an observational point of view. For the δ Scuti stars the need for complete frequency solutions for multi-periodic non-radial oscillating stars is emphasized in order for stellar seismology of these stars ...
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Multioscillating Boson Stars [PDF]
Physical Review Letters, 2019 We propose that stable boson stars generically fall within an infinite-parameter family of solutions that oscillate on any number of non-commensurate frequencies. We numerically construct two-frequency solutions and explore their parameter space. These solutions merge with the standard boson star family in the limit where the non-dominating frequencies
Matthew Choptuik +2 more
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Solar-Like Oscillations in a Massive Star [PDF]
Science, 2009 Star Gazing Seismology of stars provides a unique insight into physical mechanisms taking place in their interior. Like the Sun, some stars have low-amplitude pulsations that are excited by turbulent convection in their outer layers. Belkacem et al. (p.
Belkacem, Kevin +17 more
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Oscillating Star Formation [PDF]
Symposium - International Astronomical Union, 1986 As a consequence of positive feedback effects in interstellar chemical and star forming processes, a star formation region may undergo nonlinear oscillations.
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Discrimination of Quark Stars from Neutron Stars in Quadrupole Oscillations [PDF]
Progress of Theoretical Physics, 2002 The frequencies and damping times due to gravitational radiation are calculated for self-bound quark star models. The results are compared with those for neutron star models. They are markedly contrasted in less relativistic cases. The distinction derived here from a simple model of quark stars may be relevant to the future theoretical and ...
Kojima, Yasufumi, Sakata, Koh-ichi
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Radial oscillations of relativistic stars [PDF]
Astronomy & Astrophysics, 2001 We present a new survey of the radial oscillation modes of neutron stars. This study complements and corrects earlier studies of radial oscillations. We present an extensive list of frequencies for the most common equations of state and some more recent ones.
Kokkotas, Kostas. D., Ruoff, Johannes
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Star-shaped oscillations of Leidenfrost drops
Physical Review Fluids, 2017 We experimentally investigate the self-sustained, star-shaped oscillations of Leidenfrost drops. The drops levitate on a cushion of evaporated vapor over a heated, curved surface. We observe modes with $n = 2-13$ lobes around the drop periphery. We find that the wavelength of the oscillations depends only on the capillary length of the liquid, and is ...
Ma, Xiaolei +2 more
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Oscillations on the star Procyon [PDF]
Nature, 2004 Stars are sphere of hot gas whose interiors transmit acoustic waves very efficiently. Geologists learn about the interior structure of Earth by monitoring how seismic waves propagate through it and, in a similar way, the interior of a star can be probed using the periodic motions on the surface that arise from such waves. Matthews et al. claim that the
Bouchy, Francois +5 more
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NEUTRON STAR OSCILLATIONS FROM STARQUAKES [PDF]
The Thirteenth Marcel Grossmann Meeting, 2015 Glitches are sudden increases in the otherwise extremely regular spin rate of pulsars. One theory proposed to account for these glitches is the starquake model, in which the spinup is caused by a sudden rearrangement of the neutron star crust. Starquakes can be expected to excite some of the oscillation modes of the neutron star. These oscillations are
L. C. KEER, D. I. JONES
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