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4 papers · 2 filters
Temporal 1/f^αFluctuations from Fractal Magnetic Fields in Black Hole Accretion Flow
T. Kawaguchi, S. Mineshige, M. Machida +2
Rapid fluctuation with a frequency dependence of (with ) is characteristic of radiation from black-hole objects. Its origin remains poorly understood. We exa…
Global Simulations of Differentially Rotating Magnetized Disks : Formation of Low-Beta Filaments and Structured Corona
M. Machida, MITSURU R. Hayashi, R. Matsumoto
We present the results of three-dimensional global magnetohydrodynamic (MHD) simulations of the Parker-shearing instability in a differentially rotating torus initially threaded by…
The giant luminous arc Statistics. II. spherical lens models based on ROSAT HRI data
Kohji Molikawa, Makoto Hattori, Jean-Paul Kneib +1
We present ROSAT HRI X-ray observations of all the galaxy clusters in the Le Fèvre et al. arc survey sample in order to study the spatial distribution of the intra-cluster medium,…
A Dark Cloud Associated an Unidentified EGRET Source
T. Oka, N. Kawai, T. Naito +5
CO J=1-0 mapping observations of the dark nebula Lynds 227, which is possibly associated with the unidentified EGRET source 2EG J1811-2339, are presented. We detected a large amoun…