180 citations · 957 across the 22 of their papers we have counts for
22 papers
Constraints on the rate of supernovae lasting for more than a year from Subaru/Hyper Suprime-Cam
Takashi J. Moriya, Ji-an Jiang, Naoki Yasuda +15
Some supernovae such as pair-instability supernovae are predicted to have the duration of more than a year in the observer frame. To constrain the rates of supernovae lasting for m…
Photometric classification of HSC transients using machine learning
Ichiro Takahashi, Nao Suzuki, Naoki Yasuda +5
The advancement of technology has resulted in a rapid increase in supernova (SN) discoveries. The Subaru/Hyper Suprime-Cam (HSC) transient survey, conducted from fall 2016 through…
The HSC-SSP Transient Survey: Implications from Early Photometry and Rise Time of Normal Type Ia Supernovae
Ji-an Jiang, Naoki Yasuda, Keiichi Maeda +9
With a booming number of Type Ia supernovae (SNe Ia) discovered within a few days of their explosions, a fraction of SNe Ia that show luminosity excess in the early phase (early-ex…
Rapidly Evolving Transients from the Hyper Suprime-Cam SSP Transient Survey
Yusuke Tampo, Masaomi Tanaka, Keiichi Maeda +9
Rapidly evolving transients form a new class of transients which show shorter timescales of the light curves than those of typical core-collapse and thermonuclear supernovae. We pe…
HSC16aayt: Slowly evolving interacting transient rising for more than 100 days
Takashi J. Moriya, Masaomi Tanaka, Tomoki Morokuma +19
We report our observations of HSC16aayt (SN 2016jiu), which was discovered by the Subaru/Hyper Suprime-Cam (HSC) transient survey conducted as part of Subaru Strategic Program (SSP…
Direct Measurement of the Cosmic-Ray Proton Spectrum from 50 GeV to 10 TeV with the Calorimetric Electron Telescope on the International Space Station
O. Adriani, Y. Akaike, K. Asano +86
In this paper, we present the analysis and results of a direct measurement of the cosmic-ray proton spectrum with the CALET instrument onboard the International Space Station, incl…
The Hyper Suprime-Cam SSP Transient Survey in COSMOS: Overview
Naoki Yasuda, Masaomi Tanaka, Nozomu Tominaga +18
We present an overview of a deep transient survey of the COSMOS field with the Subaru Hyper Suprime-Cam (HSC). The survey was performed for the 1.77 deg ultra-deep layer and 5.…
The CALorimetric Electron Telescope (CALET) on the International Space Station: Results from the First Two Years On Orbit
Y. Asaoka, O. Adriani, Y. Akaike +90
The CALorimetric Electron Telescope (CALET) is a high-energy astroparticle physics space experiment installed on the International Space Station (ISS), developed and operated by Ja…
Search for GeV Gamma-ray Counterparts of Gravitational Wave Events by CALET
O. Adriani, Y. Akaike, K. Asano +88
We present results on searches for gamma-ray counterparts of the LIGO/Virgo gravitational-wave events using CALorimetric Electron Telescope ({\sl CALET}) observations. The main ins…
Extended Measurement of the Cosmic-Ray Electron and Positron Spectrum from 11 GeV to 4.8 TeV with the Calorimetric Electron Telescope on the International Space Station
O. Adriani, Y. Akaike, K. Asano +88
Extended results on the cosmic-ray electron + positron spectrum from 11 GeV to 4.8 TeV are presented based on observations with the Calorimetric Electron Telescope (CALET) on the I…
On-orbit Operations and Offline Data Processing of CALET onboard the ISS
Y. Asaoka, S. Ozawa, S. Torii +89
The CALorimetric Electron Telescope (CALET), launched for installation on the International Space Station (ISS) in August, 2015, has been accumulating scientific data since October…
First release of high-redshift superluminous supernovae from the Subaru HIgh-Z sUpernova CAmpaign (SHIZUCA). II. Spectroscopic properties
Chris Curtin, Jeff Cooke, Takashi J. Moriya +17
We present Keck spectroscopic observations of three probable high redshift superluminous supernovae (SLSNe) from the Subaru HIgh-Z sUpernova CAmpaign (SHIZUCA), confirming redshift…
First release of high-redshift superluminous supernovae from the Subaru HIgh-Z sUpernova CAmpaign (SHIZUCA). I. Photometric properties
Takashi J. Moriya, Masaomi Tanaka, Naoki Yasuda +20
We report our first discoveries of high-redshift supernovae from the Subaru HIgh-Z sUpernova CAmpaign (SHIZUCA), the transient survey using Subaru/Hyper Suprime-Cam. We report the…
Energy Calibration of CALET Onboard the International Space Station
Y. Asaoka, Y. Akaike, Y. Komiya +91
In August 2015, the CALorimetric Electron Telescope (CALET), designed for long exposure observations of high energy cosmic rays, docked with the International Space Station (ISS) a…
Energy Spectrum of Cosmic-ray Electron and Positron from 10 GeV to 3 TeV Observed with the Calorimetric Electron Telescope on the International Space Station
O. Adriani, Y. Akaike, K. Asano +88
First results of a cosmic-ray electron + positron spectrum, from 10 GeV to 3 TeV, is presented based upon observations with the CALET instrument on the ISS starting in October, 201…
Single-epoch supernova classification with deep convolutional neural networks
Akisato Kimura, Ichiro Takahashi, Masaomi Tanaka +3
Supernovae Type-Ia (SNeIa) play a significant role in exploring the history of the expansion of the Universe, since they are the best-known standard candles with which we can accur…
CALET Upper Limits on X-ray and Gamma-ray Counterparts of GW 151226
O. Adriani, Y. Akaike, K. Asano +89
We present upper limits in the hard X-ray and gamma-ray bands at the time of the LIGO gravitational-wave event GW 151226 derived from the CALorimetric Electron Telescope (CALET) ob…
The CALET Gamma-ray Burst Monitor (CGBM)
Kazutaka Yamaoka, Atsumasa Yoshida, Takanori Sakamoto +15
The CALET Gamma-ray Burst Monitor (CGBM) is the secondary scientific instrument of the CALET mission on the International Space Station (ISS), which is scheduled for launch by H-II…
Combined Spectral and Timing Analysis of the Black Hole Candidate MAXI J1659-152 Discovered by MAXI and Swift
Kazutaka Yamaoka, Ryan Allured, Philip Kaaret +12
We report on X-ray spectral and timing results of the new black hole candidate (BHC) MAXI J1659-152 with the orbital period of 2.41 hours (shortest among BHCs) in the 2010 outburst…
Spectral Lag Relations in GRB Pulses Detected with HETE-2
M. Arimoto, N. Kawai, K. Asano +36
Using a pulse-fit method, we investigate the spectral lags between the traditional gamma-ray band (50-400 keV) and the X-ray band (6-25 keV) for 8 GRBs with known redshifts (GRB 01…
Multiple Component Analysis of Time Resolved Spectra of GRB041006: A Clue to the Nature of Underlying Soft Component of GRBs
Yuji Shirasaki, Atsumasa Yoshida, Nobuyuki Kawai +30
GRB 041006 was detected by HETE-2 at 12:18:08 UT on 06 October 2004. This GRB displays a soft X-ray emission, a precursor before the onset of the main event, and also a soft X-ray…
HETE-2 Observations of the X-Ray Flash XRF 040916
Makoto Arimoto, Nobuyuki Kawai, Atsumasa Yoshida +43
A long X-ray flash was detected and localized by the instruments aboard the High Energy Transient Explorer II (HETE-2) at 00:03:30 UT on 2004 September 16. The position was reporte…