54 citations · 72 across the 3 of their papers we have counts for
7 papers
Constraining Radiatively Inefficient Accretion Flows with Polarization
D. R. Ballantyne, F. Ozel, D. Psaltis
The low-luminosity black hole Sgr A* provides a testbed for models of Radiatively Inefficient Accretion Flows (RIAFs). Recent sub-millimeter linear polarization measurements of Sgr…
The Magnetar Nature and the Outburst Mechanism of a Transient Anomalous X-ray Pulsar
Tolga Guver, Feryal Ozel, Ersin Gogus +1
Anomalous X-ray Pulsars (AXPs) belong to a class of neutron stars believed to harbor the strongest magnetic fields in the universe, as indicated by their energetic bursts and their…
Spectral Methods for Time-Dependent Studies of Accretion Flows. III. Three-Dimensional, Self-gravitating, Magnetohydrodynamic Disks
Chi-kwan Chan, Dimitrios Psaltis, Feryal Ozel
Accretion disks are three-dimensional, turbulent, often self-gravitating, magnetohydrodynamic flows, which can be modeled in detail with numerical simulations. In this paper, we pr…
Spectral Methods for Time-Dependent Studies of Accretion Flows. II. Two-Dimensional Hydrodynamic Disks with Self-Gravity
Chi-kwan Chan, Dimitrios Psaltis, Feryal Ozel
Spectral methods are well suited for solving hydrodynamic problems in which the self-gravity of the flow needs to be considered. Because Poisson's equation is linear, the numerical…
Precise Localization of the Soft Gamma Repeater SGR 1627-41 and the Anomalous X-ray Pulsar AXP 1E1841-045 with Chandra
S. Wachter, S. Patel, C. Kouveliotou +7
We present precise localizations of AXP 1E1841-045 and SGR 1627-41 with Chandra. We obtained new infrared observations of SGR 1627-41 and reanalyzed archival observations of AXP 1E…
Spectral Methods for Time-Dependent Studies of Accretion Flows. I. Two-dimensional, Viscous, Hydrodynamic Disks
Chi-kwan Chan, Dimitrios Psaltis, Feryal Ozel
We present a numerical method for studying the normal modes of accretion flows around black holes. In this first paper, we focus on two-dimensional, viscous, hydrodynamic disks, fo…