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9 papers · 1 filter
A new approach for probing circumbinary disks
Kimitake Hayasaki, Atsuo T. Okazaki
Circumbinary disks are considered to exist in a wide variety of astrophysical objects, e.g., young binary stars, protoplanetary systems, and massive binary black hole systems in ac…
Modeling the RXTE light curve of Carinae from a 3-D SPH simulation of its binary wind collision
A. T. Okazaki, S. P. Owocki, C. M. Russell +1
The very massive star system Carinae exhibits regular 5.54-year (2024-day) period disruptive events in wavebands ranging from the radio to X-ray. There is a growing consensus t…
3-D SPH simulations of colliding winds in eta Carinae
Atsuo T. Okazaki, Stanley P. Owocki, Christopher M. P. Russell +1
We study colliding winds in the superluminous binary eta Carinae by performing three-dimensional, Smoothed Particle Hydrodynamics (SPH) simulations. For simplicity, we assume both…
Tidal Interactions of Red Giants with Environment Stars in Globular Clusters
Shimako Yamada, Atsuo T. Okazaki, Masayuki Y. Fujimoto
We investigate the tidal interactions of a red giant with a main sequence in the dense stellar core of globular clusters by Smoothed Particle Hydrodynamics method. Two models of $0…
LS I+61 303: microquasar or not microquasar?
G. E. Romero, M. Orellana, A. T. Okazaki +1
LS I +61 303 is a puzzling object detected from radio up to high-energy gamma-rays. Variability has recently been observed in its high-energy emission. The object is a binary syste…
Accretion vs colliding wind models for the gamma-ray binary LS I +61 303: an assessment
G. E. Romero, A. T. Okazaki, M. Orellana +1
LS I +61 303 is a puzzling Be/X-ray binary with variable gamma-ray emission at up TeV energies. The nature of the compact object and the origin of the high-energy emission are uncl…