activity
20172021
most citedPhotonuclear Reactions in Lightning Discovered from Detection of Positrons and Neutrons

187 citations · 193 across the 3 of their papers we have counts for

collaborators

7 papers

astro-ph.IM20213 cited

The Instrument of the Imaging X-ray Polarimetry Explorer

Paolo Soffitta, Luca Baldini, Ronaldo Bellazzini +78

While X-ray Spectroscopy, Timing and Imaging have improved verymuch since 1962, when the first astronomical non-solar source was discovered, especially with the launch of Newton/X-…

astro-ph.HE20193 cited

An enigmatic hump around 30 keV in Suzaku spectra of Aquila X-1 in the Hard State

Megu Kubota, Toru Tamagawa, Kazuo Makishima +4

The typical accreting neutron star, Aquila X-1, was observed with Suzaku seven times in the decay phase of an outburst in 2007 September-October. Among them, the second to the four…

astro-ph.HE2018

Discovery of Red-shifted He-like Iron Absorption Line from Luminous Accreting Neutron Star SMC X-1

Megu Kubota, Hirokazu Odaka, Toru Tamagawa +1

We have analyzed X-ray data of SMC X-1 obtained with \textit{Suzaku}, and discovered a combination of an absorption line and an underlying broadened emission line centered at 6.4 k…

astro-ph.IM2018

In-orbit performance and calibration of the Hard X-ray Imager onboard Hitomi (ASTRO-H)

Kouichi Hagino, Kazuhiro Nakazawa, Goro Sato +37

The Hard X-ray Imager (HXI) onboard Hitomi (ASTRO-H) is an imaging spectrometer covering hard X-ray energies of 5-80 keV. Combined with the hard X-ray telescope, it enables imaging…

astro-ph.IM2018

Imaging and spectral performance of CdTe double-sided strip detectors for the Hard X-ray Imager onboard ASTRO-H

Kouichi Hagino, Hirokazu Odaka, Goro Sato +20

The imaging and spectral performance of CdTe double-sided strip detectors (CdTe-DSDs) was evaluated for the ASTRO-H mission. The charcterized CdTe-DSDs have a strip pitch of 0.25 m…

astro-ph.IM2018

Modeling of proton-induced radioactivation background in hard X-ray telescopes: Geant4-based simulation and its demonstration by Hitomi's measurement in a low Earth orbit

Hirokazu Odaka, Makoto Asai, Kouichi Hagino +47

Hard X-ray astronomical observatories in orbit suffer from a significant amount of background due to radioactivation induced by cosmic-ray protons and/or geomagnetically trapped pr…