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25 papers · 2 filters
Fermi-LAT and Suzaku Observations of the Radio Galaxy Centaurus B
J. Katsuta, Y. T. Tanaka, L. Stawarz +8
Centaurus B is a nearby radio galaxy positioned in the Southern hemisphere close to the Galactic plane. Here we present a detailed analysis of about 43 months of accumulated Fermi-…
Binary Millisecond Pulsar Discovery via Gamma-Ray Pulsations
H. J. Pletsch, L. Guillemot, H. Fehrmann +150
Millisecond pulsars, old neutron stars spun-up by accreting matter from a companion star, can reach high rotation rates of hundreds of revolutions per second. Until now, all such "…
Effects of Resistivity on Magnetized Core-Collapse Supernovae
Hidetomo Sawai, Shoichi Yamada, Kei Kotake +1
We studied roles of a turbulent resistivity in the core-collapse of a strongly magnetized massive star, carrying out 2D-resistive-MHD simulations. The three cases with different in…
Regular and non-regular solutions of the Riemann problem in ideal magnetohydrodynamics
Kazuya Takahashi, Shoichi Yamada
We have built a code to numerically solve the Riemann problem in ideal magnetohydrodynamics (MHD) for an arbitrary initial condition to investigate a variety of solutions more thor…
Supernova Neutrino Light Curves and Spectra for Various Progenitor Stars: From Core Collapse to Proto-neutron Star Cooling
Ken'ichiro Nakazato, Kohsuke Sumiyoshi, Hideyuki Suzuki +3
We present a new series of supernova neutrino light curves and spectra calculated by numerical simulations for a variety of progenitor stellar masses (13-50Msolar) and metallicitie…
Spectral Comparison of Weak Short Bursts to the Persistent X-rays from the Magnetar 1E 1547.0-5408 in its 2009 Outburst
Teruaki Enoto, Yujin E. Nakagawa, Takanori Sakamoto +1
In January 2009, the 2.1-sec anomalous X-ray pulsar 1E 1547.0-5408 evoked intense burst activity. A follow-up Suzaku observation on January 28 recorded enhanced persistent emission…