Zobrazeno 1 - 10
of 133
pro vyhledávání: '"Gordon I Ogilvie"'
Autor:
Hongping Deng, Gordon I. Ogilvie
Astrophysical disks that are sufficiently cold and dense are linearly unstable to the formation of axisymmetric rings as a result of the disk's gravity. In practice, spiral structures are formed, which may in turn produce bound fragments. We study a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea189a12c7b673f818efe37a9b444d2e
Autor:
J. J. Zanazzi, Gordon I. Ogilvie
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 499:5562-5577
After the Tidal Disruption Event (TDE) of a star around a SuperMassive Black Hole (SMBH), if the stellar debris stream rapidly circularizes and forms a compact disk, the TDE emission is expected to peak in the soft X-ray or far Ultra-Violet (UV). The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99f1ad2a87968a1eb4217fe80457dd43
https://doi.org/10.1093/mnras/staa3127
https://doi.org/10.1093/mnras/staa3127
Autor:
Gordon I. Ogilvie, Philip K. C. Leung
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 498:750-770
A magnetic disc wind is an important mechanism that may be responsible for driving accretion and structure formation in protoplanetary discs. Recent numerical simulations have shown that these winds can take either the traditional `hourglass' symmetr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e961991350baa48cd0d350adc10be36c
https://doi.org/10.1093/mnras/staa2312
https://doi.org/10.1093/mnras/staa2312
We simulate the propagation and dissipation of tidally induced nonlinear gravity waves in the cores of solar-type stars. We perform hydrodynamical simulations of a previously developed Boussinesq model using a spectral-element code to study the stell
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49e5fc46d217997c931fb36b48d27906
Autor:
Hongping Deng, Gordon I Ogilvie
The nonlinear behaviour of low-viscosity warped discs is poorly understood. We verified a nonlinear bending-wave theory, in which fluid columns undergo affine transformations, with direct 3D hydrodynamical simulations. We employed a second-order Godu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ec2c789c0624a85a1260601acd5be17
https://www.repository.cam.ac.uk/handle/1810/335456
https://www.repository.cam.ac.uk/handle/1810/335456
Publikováno v:
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2022, 517, pp.437-446. ⟨10.1093/mnras/stac2611⟩
Monthly Notices of the Royal Astronomical Society, 2022, 517, pp.437-446. ⟨10.1093/mnras/stac2611⟩
We revisit the Tidally Excited Oscillations (TEOs) in the A-type, main-sequence, eccentric binary KOI-54, the prototype of heartbeat stars. Although the linear tidal response of the star is a series of orbital-harmonic frequencies which are not stell
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02a18ccea33c6c9f06bed8073eb72631
Autor:
J. Teyssandier, Gordon I. Ogilvie
Publikováno v:
EAS Publications Series. 82:415-422
The origin and wide distribution of eccentricities in planetary systems remains to be explained, in particular in the context of planet-disc interactions. Here we present a set of linear equations that describe the behavior of small eccentricities in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c713c70b7d68ec13438422d2380c07df
https://doi.org/10.1051/eas/1982036
https://doi.org/10.1051/eas/1982036
Autor:
Gordon I. Ogilvie
Publikováno v:
EAS Publications Series. 82:35-42
The efficiency of tidal dissipation in convective zones of stars and giant planets depends, in part, on the response of a three-dimensional fluid flow to the periodic deformation due to the equilibrium tide — a problem considered by Jean-Paul Zahn
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc6a7c61f522a9511bc290f3ac394d1d
https://doi.org/10.1051/eas/1982003
https://doi.org/10.1051/eas/1982003
Autor:
Callum W. Fairbairn, Gordon I. Ogilvie
Understanding oscillations and waves in astrophysical fluid bodies helps to elucidate their observed variability and the underlying physical mechanisms. Indeed, global oscillations and bending modes of accretion discs or tori may be relevant to quasi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26d8e8158538bff956cc82eebe34a6bd
Importance of magnetic fields in highly eccentric discs with applications to tidal disruption events
Autor:
Gordon I. Ogilvie, Elliot M Lynch
Whether tidal disruption events (TDEs) circularise or accrete directly as a highly eccentric disc is the subject of current research and appears to depend sensitively on the disc thermodynamics. In a previous paper we applied the theory of eccentric
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc2ea8eec16d951f52bef555040a6265
http://arxiv.org/abs/2101.01221
http://arxiv.org/abs/2101.01221