118 citations · 302 across the 4 of their papers we have counts for
4 papers
Development of a Precise Polarization Modulator for UV Spectropolarimetry
Shin-nosuke Ishikawa, Toshifumi Shimizu, Ryouhei Kano +6
We developed a polarization modulation unit (PMU) to rotate a waveplate continuously in order to observe solar magnetic fields by spectropolarimetry. The non-uniformity of the PMU…
Kappa Distribution Model for Hard X-Ray Coronal Sources of Solar Flares
M. Oka, S. Ishikawa, P. Saint-Hilaire +2
Solar flares produce hard X-ray emission of which the photon spectrum is often represented by a combination of thermal and power-law distributions. However, the estimates of the nu…
Soft Gamma-ray Detector for the ASTRO-H Mission
Hiroyasu Tajima, Roger Blandford, Teruaki Enoto +26
ASTRO-H is the next generation JAXA X-ray satellite, intended to carry instruments with broad energy coverage and exquisite energy resolution. The Soft Gamma-ray Detector (SGD) is…
High energy resolution hard X-ray and gamma-ray imagers using CdTe diode devices
Shin Watanabe, Shin-nosuke Ishikawa, Hiroyuki Aono +8
We developed CdTe double-sided strip detectors (DSDs or cross strip detectors) and evaluated their spectral and imaging performance for hard X-rays and gamma-rays. Though the doubl…