206 citations · 435 across the 13 of their papers we have counts for
13 papers
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…
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.…
First detection of PSR B1259-63/LS 2883 in the Millimeter and Submillimeter Wavelengths with ALMA
Yutaka Fujita, Akiko Kawachi, Takuya Akahori +2
We report Atacama Large Millimeter/submillimeter Array (ALMA) observations of the binary system containing the pulsar PSR B1259-63 orbiting around a Be star LS 2883 after the 2017…
Metallicity dependence of black hole main sequence binaries detectable with Gaia
Tomoya Kinugawa, Masaki S. Yamaguchi
LIGO has detected gravitational waves from massive binary black hole mergers. In order to explain the origin of such massive stellar-mass black holes, extreme metal poor stars incl…
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…
Uncovering the identities of compact objects in high-mass X-ray binaries and gamma-ray binaries by astrometric measurements
Masaki S. Yamaguchi, T. Yano, N. Gouda
We develop a method for identifying a compact object in binary systems with astrometric measurements and apply it to some binaries. Compact objects in some high-mass X-ray binaries…
J-GEM observations of an electromagnetic counterpart to the neutron star merger GW170817
Yousuke Utsumi, Masaomi Tanaka, Nozomu Tominaga +57
The first detected gravitational wave from a neutron star merger was GW170817. In this study, we present J-GEM follow-up observations of SSS17a, an electromagnetic counterpart of G…
Detecting Black Hole Binaries by Gaia
Masaki S. Yamaguchi, Norita Kawanaka, Tomasz Bulik +1
We study the prospect of the Gaia satellite to identify black hole binary systems by detecting the orbital motion of the companion stars. Taking into account the initial mass funct…
Subaru Hyper Suprime-Cam Survey for An Optical Counterpart of GW170817
Nozomu Tominaga, Masaomi Tanaka, Tomoki Morokuma +31
We perform a -band survey for an optical counterpart of a binary neutron star coalescence GW170817 with Subaru/Hyper Suprime-Cam. Our untargeted transient search covers d…
Improving the Moment Approach for Astrometric Binaries: Possible Application to Cygnus X-1
Kei Yamada, Masaki Yamaguchi, Hideki Asada +1
A moment approach for orbit determinations of astrometric binaries from astrometric observations alone has been recently studied for a low signal-to-noise ratio (Iwama et al. 2013,…
Inverse Compton Scattering Model for X-ray Emission of the Gamma-ray Binary LS 5039
Masaki S. Yamaguchi, Fumio Takahara
We propose a model for the gamma-ray binary LS 5039 in which the X-ray emission is due to the inverse Compton (IC) process instead of the synchrotron radiation. Although the synchr…
Modulation Mechanism of TeV, GeV, and X-ray Emission in LS5039
Masaki Yamaguchi, Fumio Takahara
The emission mechanism of the gamma-ray binary LS5039 in energy bands of TeV, GeV, and X-ray is investigated. Observed light curves in LS5039 show that TeV and GeV fluxes anticorre…