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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 New Look at Quasar Accretion Disks
(International Astronomical Union, 2013)
The physics of active black holes (BHs) is governed by three key parameters: their mass, spin, and accretion rate. Understanding the cosmic evolution of these parameters is crucial for tracing back the growth of the BHs ...
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 ...
Probing the magnetospheric accretion region of the young pre-transitional disk system DoAr 44 using VLTI/GRAVITY
(EDP Sciences, 2020)
Context. Young stellar objects are thought to accrete material from their circumstellar disks through their strong stellar magnetospheres.
Aims. We aim to directly probe the magnetospheric accretion region on a scale ...
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). ...