Browsing FAS Scholarly Articles by Title
Now showing items 389-408 of 18292
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Advection-dominated Accretion and Black Hole Event Horizons
(1997)The defining characteristic of a black hole is that it possesses an event horizon through which matter and energy can fall in but from which nothing escapes. Soft X-ray transients (SXTs), a class of X-ray binaries, appear ... -
Advection-dominated accretion and the black hole event horizon
(Elsevier BV, 2008)As the luminosity of an accreting black hole drops to a few percent of Eddington, the spectrum switches from the familiar soft state to a hard state that is well-described by a distended and tenuous advection-dominated ... -
Advection-dominated accretion: Self-similarity and bipolar outflows
(American Astronomical Society, 1995)We consider axisymmetric viscous accretion flows where a fraction f of the viscously dissipated energy is stored in the accreting gas as entropy and a fraction 1 - f is radiated. Assuming alpha-viscosity we obtain a ... -
Advection-dominated Accretion: Underfed Black Holes and Neutron Stars
(American Astronomical Society, 1995)We describe new optically thin solutions for rotating accretion flows around black holes and neutron stars. These solutions are advection dominated, so that most of the viscously dissipated energy is advected radially with ... -
Advection-dominated Models of Luminous Accreting Black Holes
(American Astronomical Society, 1996)It has been found that a class of optically thin two-temperature advection-dominated accretion solutions explains many observations of low-luminosity accreting black holes. Here it is shown that these models give a ... -
Advection‐Dominated Accretion and the Spectral States of Black Hole X‐Ray Binaries: Application to Nova Muscae 1991
(American Astronomical Society, 1997)Black hole X-ray binaries (BHXBs) are known to display five distinct spectral states. In order of increasing luminosity these are the quiescent state, low state, intermediate state, high state, and very high state. We ... -
Advection‐dominated Accretion Model of Sagittarius A*: Evidence for a Black Hole at the Galactic Center
(American Astronomical Society, 1998) -
Advection‐dominated Accretion Model of the Black Hole V404 Cygni in Quiescence
(American Astronomical Society, 1997)We have analyzed archival ASCA data on the soft X-ray transient source V404 Cyg in quiescence. We find that in the energy range 0.7-8.5 keV the spectrum is a hard power law with a photon spectral index between 1.8 and 2.6 ... -
Advection‐dominated Flows around Black Holes and the X‐Ray Delay in the Outburst of GRO J1655−40
(American Astronomical Society, 1997) -
The Adventures of Jon Dos Passos
(Columbia University Press, 1961) -
Adverse selection and growth under IMF programs
(Springer Science + Business Media, 2013)The dominant approach to studying the effects of IMF programs has emphasized moral hazard, but we find that adverse selection has more impressive effects. We propose a novel strategic selection model to study the growth ... -
Aeneas in Baghdad
(Verlag Traugott Bautz, 2015) -
The Aeolic Component of Homeric Diction
(Ute Hempen Verlag, 2011) -
Aerobic Capacity, Activity Levels and Daily Energy Expenditure in Male and Female Adolescents of the Kenyan Nandi Sub-Group
(Public Library of Science, 2013)The relative importance of genetic and socio-cultural influences contributing to the success of east Africans in endurance athletics remains unknown in part because the pre-training phenotype of this population remains ... -
Aerobic Fitness, Micronutrient Status, and Academic Achievement in Indian School-Aged Children
(Public Library of Science, 2015)Aerobic fitness has been shown to have several beneficial effects on child health. However, research on its relationship with academic performance has been limited, particularly in developing countries and among undernourished ... -
Affect of the unconscious: Visually suppressed angry faces modulate our decisions
(Springer Nature, 2012)Emotional and affective processing imposes itself over cognitive processes and modulates our perception of the surrounding environment. In two experiments, we addressed the issue of whether nonconscious processing of affect ... -
Affective and Neural Reactivity to Criticism in Individuals High and Low on Perceived Criticism
(Public Library of Science, 2012)People who have remitted from depression are at increased risk for relapse if they rate their relatives as being critical of them on a simple self-report measure of Perceived Criticism (PC). To explore neural mechanisms ... -
Affective Forecasting
(Elsevier, 2003) -
Affective Neutral Reactivity to Criticism in Individuals High and Low on Perceived Criticism
(Public Library of Science, 2012)People who have remitted from depression are at increased risk for relapse if they rate their relatives as being critical of them on a simple self-report measure of Perceived Criticism (PC). To explore neural mechanisms ...