Katsuji Koyama

Non-Thermal Radio and Gamma-Ray Emissions from a Supernova Remnant by Blast Wave Breaking Out of the Circumstellar Matter

We calculate synchrotron radio emission and gamma-ray emission due to bremsstrahlung, inverse-Compton scattering and

Frontiers of X-ray astronomy

pi^0

すざくによる超新星残骸G272.2-3.2の観測

-decay from the remnant of supernova which exploded in the circumstellar matter (CSM) formed by the progenitors stellar wind. This sort of situation is a possible origin of mixed-morphology supernova remnants (SNRs) like W49B, which exhibit recombination-radiation spectra in X-ray emission. We assume that the CSM of 1.5

Suzaku identifies the true nature of an old friend in the Galactic center: SgrD

M_{odot}

すざく衛星によるTeVガンマ線未同定天体HESS J1825-137の観測

exists at 0.07--3 pc away from the supernova in the interstellar medium (ISM) of density 0.016 cm

An X-Ray Flare from a Pre-Main-Sequence Star in the rho Ophiuchi Dark Cloud

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Observations of X-ray pulsars with Ginga.

. When the blast wave breaks out of the CSM into the ISM, its velocity rapidly increases and hence particle acceleration is enhanced. The maximum energy of protons reaches

X-ray emission from normal galaxies.

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X ray spectra of OVV QSOs

1300 TeV just after the break-out with

Search for large scale extended diffuse X ray emission from the Coma-A1367 supercluster

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