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Tomographic Simulations of accretion disks in cataclysmic variables - Flickering and wind
(ASTRONOMICAL SOC JAPAN, 2008)
Both continuum and emission line flickering are phenomena directly associated with the mass-accretion process. In this work we simulated accretion-disk Doppler maps, including the effects of winds and flickering flares. ...
The viscosity parameter's dependence on the profile of the disk scale height
(UNIV CHICAGO PRESS, 2008)
It is shown that, for accretion disks, the height scale is a constant whenever hydrostatic equilibrium and the subsonic turbulence regime hold in the disk. In order to have a variable height scale, processes are needed ...
ON THE DOUBLE NATURED SOLUTIONS OF THE TWO-TEMPERATURE EXTERNAL SOFT PHOTON COMPTONIZED ACCRETION DISKS
(IOP PUBLISHING LTD, 2009)
We have analyzed pair production in the innermost region of a two-temperature external soft photon Comptonized accretion disk. We have shown that, if the viscosity parameter is greater than a critical value alpha(c), the ...
Precession of neutrino-cooled accretion disks in gamma-ray burst engines
(EDP Sciences, 2006-07)
Aims. We study the precession of accretion disks in the context of gamma-ray burst inner engines. Methods. With an accretion disk model that allows for neutrino cooling, we evaluate the possible periods of disk precession ...
A bright inner disk and structures in the transition disk around the very low-mass star CIDA1
(EDP Sciences, 2021)
The frequency of Earth-sized planets in habitable zones appears to be higher around M-dwarfs, making these systems exciting laboratories to investigate planet formation. Observations of protoplanetary disks around very ...
Accretion disks around black holes in scalar-tensor-vector gravity
(American Physical Society, 2017-05)
Scalar-tensor-vector gravity (STVG) is an alternative theory of gravitation that has successfully explained the rotation curves of nearby galaxies, the dynamics of galactic clusters, and cosmological data without dark ...
A two-armed pattern in flickering maps of the nova-like variable UU aquarii
(UNIV CHICAGO PRESS, 2008)
We report the analysis of a uniform sample of 31 light curves of the nova-like variable UU Aqr with eclipse-mapping techniques. The data were combined to derive eclipse maps of the average steady-light component, the ...
The role of magnetic reconnection on jet/accretion disk systems
(EDP SCIENCES S A, 2010)
Context. It was proposed earlier that the relativistic ejections observed in microquasars could be produced by violent magnetic reconnection episodes at the inner disk coronal region (de Gouveia Dal Pino & Lazarian 2005). ...
Accretion from debris disks onto white dwarfs. Fingering (thermohaline) instability and derived accretion rates
(Edp Sciences, 2013-09)
Context. Recent observations of a large number of DA and DB white dwarfs show evidence of debris disks, which are the remnants of old planetary systems. The infrared excess detected with Spitzer and the lines of heavy ...
Horseshoe drag in three-dimensional globally isothermal disks
(IOP Publishing, 2016-01)
We study the horseshoe dynamics of a low-mass planet in a three-dimensional, globally isothermal, inviscid disk. We find, as reported in previous work, that the boundaries of the horseshoe region (separatrix sheets) have ...