187 citations · 187 across the 1 of their papers we have counts for
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Accretion Disk Boundary Layers Around Neutron Stars: X-ray Production in Low-Mass X-ray Binaries
Robert Popham, Rashid Sunyaev
We present solutions for the structure of the boundary layer where the accretion disk meets the neutron star, which is expected to be the dominant source of high-energy radiation i…
Hyper-Accreting Black Holes and Gamma-Ray Bursts
Robert Popham, S. E. Woosley, Chris Fryer
A variety of current models for gamma-ray bursts (GRBs) suggest a common engine - a black hole of several solar masses accreting matter from a disk at a rate 0.01 to 10 solar masse…
Advection Dominated Accretion Flows in the Kerr Metric: II. Steady State Global Solutions
Robert Popham, Charles F. Gammie
In a previous paper we have written down equations describing steady-state, optically thin, advection-dominated accretion onto a Kerr black hole (Gammie and Popham 1997, hereafter…
Advection-Dominated Accretion Model of Sagittarius A*: Evidence for a Black Hole at the Galactic Center
Ramesh Narayan, Rohan Mahadevan, Jonathan E. Grindlay +2
Sgr A* at the Galactic Center is a puzzling source. It has a mass M=(2.5+/-0.4) x 10^6 solar masses which makes it an excellent black hole candidate. Observations of stellar winds…
Advection Dominated Accretion Flows in the Kerr Metric: I. Basic Equations
Charles F. Gammie, Robert Popham
We write down and solve equations describing steady state, optically thin, advection-dominated accretion onto a Kerr black hole. The mean flow, described by the relativistic fluid…
Heating of a Star by Disk Accretion
Robert Popham
We examine various ways in which disk accretion can heat an accreting star. These include 1) radiation emitted from the disk surface which is intercepted by the stellar surface, 2)…