Publications of the Astronomical Society of Japan 2024年2月 [査読有り]
Abstract
We develop a new deconvolution method to recover the precise Crab Nebula image taken by the Hitomi HXT, suppressing the artifact due to the bright Crab pulsar. We extend the Richardson–Lucy method, introducing two components correspondi...
Asca Miyamoto   Yasuharu Sugawara   Yoshitomo Maeda   Manabu Ishida   Kenji Hamaguchi   Michael Corcoran   Christopher M P Russell   Anthony F J Moffat   
Monthly Notices of the Royal Astronomical Society 527(3) 7121-7135 2023年11月 [査読有り]
ABSTRACT
We analyse the XMM–Newton RGS spectra of Wolf–Rayet (WR) 140, an archetype long-period eccentric WR+O colliding wind binary. We evaluate the spectra of O and Fe emission lines and find that the plasmas emitting these lines have the larg...
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1048 167975-167975 2023年3月 [査読有り]
I. Mitsuishi   Y. Ezoe   M. Koshiishi   M. Mita   Y. Maeda   N. Y. Yamasaki   K. Mitsuda   T. Shirata   T. Hayashi   T. Takano   R. Maeda   
2008 IEEE/LEOS INTERNATIONAL CONFERENCE ON OPTICAL MEMS AND NANOPHOTONICS 104-105 2008年 [査読有り]
X-ray reflectivity of an ultra light-weight X-ray optic using MEMS technologies was measured in two different energies (0.28 keV and 1.49 keV). The obtained reflectivities can be understood by considering the mirror surface structures.
K Ebisawa   Beckmann, V   TJL Courvoisier   P Dubath   H Kaneda   Y Maeda   S Yamauchi   E Nishihara   
ASTRONOMISCHE NACHRICHTEN 324(1-2) 158-158 2003年
We have carried out a deep X-ray observation on a typical Galactic plane<br />
region with the Chandra ACIS-I instrument with unprecedented sensitivity and<br />
spatial resolution, and detected 274 unidentified X-ray point sources in the<br />
\~...
Astrophysical Journal Supplement Series 138(1) 19-34 2002年1月
The ASCA satellite made 107 pointing observations on a 5 x 5 deg^2 region<br />
around the center of our Milky Way Galaxy (the Galactic Center) from 1993 to<br />
1999. In the X-ray images of the 0.7--3 keV or 3--10 keV bands, we found 52<br />
po...