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A Systematic Study of the Thermal and Nonthermal Emission in the Supernova Remnant RCW 86 with Suzaku
Yoshio Tsubone, Makoto Sawada, Aya Bamba +2
Diffusive shock acceleration by the shockwaves in supernova remnants (SNRs) is widely accepted as the dominant source for Galactic cosmic rays. However, it is unknown what determin…
Measurement of the X-ray proper motion in the south-east rim of RX J1713.7-3946
Fabio Acero, Satoru Katsuda, Jean Ballet +1
We report on the first proper motion measurement in the supernova remnant RX J1713.7-3946 using the XMM-Newton X-ray telescope on a 13 year time interval. This expansion measuremen…
Two Distinct-Absorption X-Ray Components from Type IIn Supernovae: Evidence for Asphericity in the Circumstellar Medium
Satoru Katsuda, Keiichi Maeda, Aya Bamba +7
We present multi-epoch X-ray spectral observations of three Type IIn supernovae (SNe) 2005kd, 2006jd, and 2010jl, acquired with Chandra, XMM-Newton, Suzaku, and Swift. Previous ext…
Modeling the shock-cloud interaction in SN 1006: unveiling the origin of nonthermal X-ray and gamma-ray emission
Marco Miceli, Salvatore Orlando, Victor Pereira +9
The supernova remnant SN 1006 is a source of high-energy particles and its southwestern limb is interacting with a dense ambient cloud, thus being a promising region for gamma-ray…
Constraining the Age and Distance of the Galactic Supernova Remnant G156.2+5.7 by H-alpha Expansion Measurements
Satoru Katsuda, Masaomi Tanaka, Tomoki Morokuma +2
We present deep H-alpha images of portions of the X-ray bright but optically faint Galactic supernova remnant G156.2+5.7, revealing numerous and delicately thin nonradiative filame…
Suzaku observations of the hard X-ray spectrum of Vela Jr
Sawako Takeda, Aya Bamba, Yukikatsu Terada +5
We report the results of Suzaku observations of the young supernova remnant, Vela Jr.\ (RX J0852.04622), which is known to emit synchrotron X-rays, as well as TeV gamma-rays. Ut…
Measurements of the Soft Gamma-ray Emission from SN2014J with Suzaku
Y. Terada, K. Maeda, Y. Fukazawa +9
The hard X-ray detector (HXD) onboard {\it Suzaku} measured soft -rays from the Type Ia supernova SN2014J at days after the explosion. Although the confidence level of…
The Refined Shock Velocity of the X-Ray Filaments in the RCW 86 Northeast Rim
Hiroya Yamaguchi, Satoru Katsuda, Daniel Castro +5
A precise measurement of shock velocities is crucial for constraining the mechanism and efficiency of cosmic-ray (CR) acceleration at supernova remnant (SNR) shock fronts. The nort…
Spatially-Resolved Spectroscopy of a Balmer-Dominated Shock in the Cygnus Loop: An Extremely Thin Cosmic-Ray Precursor?
Satoru Katsuda, Keiichi Maeda, Yutaka Ohira +9
We present high-resolution long-slit spectroscopy of a Balmer-dominated shock in the northeastern limb of the Cygnus Loop with the Subaru high dispersion spectrograph. By setting t…