Publications of the Astronomical Society of Japan 72(5) 2020年10月
In this decade, GeV/TeV gamma-ray observations of several supernova remnants
(SNRs) have implied that accelerated particles are escaping from their
acceleration sites. However, when and how they escape from the SNR vicinities
are yet to be underst...
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS 6(4) 2020年10月
Understanding and reducing in-orbit instrumental backgrounds are essential to achieving high sensitivity in hard x-ray astronomical observations. The observational data of the Hard X-ray Imager (HXI) onboard the Hitomi satellite provide useful inf...
We report on the results of our detailed analyses on the peculiar recombining
plasma of the supernova remnant (SNR) G359.10.5, and the interacting CO
clouds. Combining {\it Chandra} and {\it Suzaku} data, we estimated the
ionization state of th...
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 70(4) 2018年8月
We present an X-ray study of the GeV gamma-ray supernova remnant (SNR) HB 21 with Suzaku. HB 21 is interacting with molecular clouds, and is the faintest in the GeV band among known GeV SNRs. We discovered strong radiative recombination continua o...
Supernova remnants (SNRs) are thought to be the most plausible sources of
Galactic cosmic rays. One of the principal questions is whether they are
accelerating particles up to the maximum energy of Galactic cosmic rays
(PeV). In this paper, ...
The evidence for multi-messenger photon and neutrino emission from the blazar
TXS 0506+056 has demonstrated the importance of realtime follow-up of neutrino
events by various ground- and space-based facilities. The effort of H.E.S.S.
and other exp...
IRAS 00500+6713 is a hypothesized remnant of a type Iax supernova SN 1181.
Multi-wavelength observations have revealed its complicated morphology; a dusty
infrared ring is sandwiched by the inner and outer X-ray nebulae. We analyze
the archival X-...
SPACE TELESCOPES AND INSTRUMENTATION 2022: ULTRAVIOLET TO GAMMA RAY 12181 2023年3月
In this multi-messenger astronomy era, all the observational probes are
improving their sensitivities and overall performance. The Focusing on
Relativistic universe and Cosmic Evolution (FORCE) mission, the product of a
JAXA/NASA collaboration, wi...
SPACE TELESCOPES AND INSTRUMENTATION 2022: ULTRAVIOLET TO GAMMA RAY 12181 2023年3月
Xtend is a soft X-ray imaging telescope developed for the X-Ray Imaging and
Spectroscopy Mission (XRISM). XRISM is scheduled to be launched in the Japanese
fiscal year 2022. Xtend consists of the Soft X-ray Imager (SXI), an X-ray CCD
camera, and t...