User profiles for "author:Satoshi Honda"

Satoshi Honda

Assistant Professor, The University of Tokyo
Verified email at mail.ecc.u-tokyo.ac.jp
Cited by 760

Superflares on solar-type stars

H Maehara, T Shibayama, S Notsu, Y Notsu, T Nagao… - Nature, 2012 - nature.com
Solar flares are caused by the sudden release of magnetic energy stored near sunspots.
They release 1029 to 1032 ergs of energy on a timescale of hours. Similar flares have been …

Nucleosynthetic signatures of the first stars

A Frebel, W Aoki, N Christlieb, H Ando, M Asplund… - Nature, 2005 - nature.com
The chemically most primitive stars provide constraints on the nature of the first stellar
objects that formed in the Universe; elements other than hydrogen, helium and traces of …

High dispersion spectrograph (HDS) for the Subaru telescope

K Noguchi, W Aoki, S Kawanomoto… - Publications of the …, 2002 - academic.oup.com
We present the design and performance of the High Dispersion Spectrograph (HDS) of the
Subaru Telescope. HDS is an echelle spectrograph located at the Nasmyth focus of the …

Superflares on solar-type stars observed with Kepler. I. Statistical properties of superflares

T Shibayama, H Maehara, S Notsu… - The Astrophysical …, 2013 - iopscience.iop.org
By extending our previous study by Maehara et al., we searched for superflares on G-type
dwarfs (solar-type stars) using Kepler data for a longer period (500 days) than that (120 …

Spectroscopic studies of extremely metal-poor stars with the Subaru High Dispersion Spectrograph. II. The r-process elements, including thorium

S Honda, W Aoki, T Kajino, H Ando… - The Astrophysical …, 2004 - iopscience.iop.org
We have obtained high-resolution, high signal-to-noise near-UV–blue spectra of 22 very
metal-poor stars ([Fe/H]<-2.5) with the Subaru High Dispersion Spectrograph and measured …

Kilonova from post-merger ejecta as an optical and near-Infrared counterpart of GW170817

M Tanaka, Y Utsumi, PA Mazzali… - Publications of the …, 2017 - academic.oup.com
Recent detection of gravitational waves from a neutron star (NS) merger event GW170817
and identification of an electromagnetic counterpart provide a unique opportunity to study …

Trends in the clinical and pathological characteristics of cardiac rupture in patients with acute myocardial infarction over 35 years

S Honda, Y Asaumi, T Yamane, T Nagai… - Journal of the …, 2014 - Am Heart Assoc
Background There is little known about whether the clinical and pathological characteristics
and incidence of cardiac rupture (CR) in patients with acute myocardial infarction (AMI) have …

Selective dye loading at the heterojunction in polymer/fullerene solar cells

S Honda, H Ohkita, H Benten… - Advanced Energy Materials, 2011 - Wiley Online Library
Selective dye loading at the polymer/fullerene interface was studied for ternary blend bulk
heterojunction solar cells, consisting of regioregular poly (3‐hexylthiophene)(RR‐P3HT), a …

Improvement of the light-harvesting efficiency in polymer/fullerene bulk heterojunction solar cells by interfacial dye modification

S Honda, T Nogami, H Ohkita… - ACS applied materials & …, 2009 - ACS Publications
Enhancement of the light-harvesting efficiency in poly (3-hexylthiophene)/fullerene
derivative (P3HT/PCBM) bulk heterojunction solar cells has been demonstrated by the …

Early phase observations of extremely luminous Type Ia Supernova 2009dc

M Yamanaka, KS Kawabata, K Kinugasa… - The Astrophysical …, 2009 - iopscience.iop.org
We present early phase observations in optical and near-infrared wavelengths for the
extremely luminous Type Ia supernova (SN Ia) 2009dc. The decline rate of the light curve is …