54 citations · 147 across the 14 of their papers we have counts for
14 papers
Interpreting the diversity of afterglow emission from radio-detected tidal disruption events with instantaneous and delayed outflows
Yuri Sato, Mukul Bhattacharya, Jose Carpio +2
Tidal disruption events (TDEs) occur when a star is gravitationally disrupted by the tidal field of a supermassive black hole during a close encounter. Radio emission has recently…
EP240414a: A Gamma-Ray Burst Jet Weakened by an Extended Circumstellar Material
Hamid Hamidani, Yuri Sato, Kazumi Kashiyama +3
The recent Einstein Probe (EP) event EP240414a exhibits several unusual observational features. Its prompt and afterglow emissions place it between long gamma-ray bursts (LGRBs) an…
Two-component jet model for the afterglow emission of GRB 201216C and GRB 221009A and implications for jet structure of very-high-energy gamma-ray bursts
Yuri Sato, Kohta Murase, Yutaka Ohira +2
In recent years, afterglow emission in the very-high-energy (VHE) band above 100 GeV has been clearly detected for at least five gamma-ray bursts (GRBs 180720B, 190114C, 190829A, 2…
Two-component off-axis jet model for radio flares of tidal disruption events
Yuri Sato, Kohta Murase, Mukul Bhattacharya +3
Recently, radio emission from tidal disruption events (TDEs) has been observed from months to years after the optical discovery. Some of the TDEs including ASASSN-14ae, ASASSN-15oi…
Detection of the 2021 Outburst of RS Ophiuchi with the LST-1
Yukiho Kobayashi, Arnau Aguasca-Cabot, María Isabel Bernardos Martín +2
Novae are luminous explosions in close binaries which host a white dwarf and a companion donor star. They are triggered by a thermonuclear runaway when the white dwarf accretes a c…
Imaging Atmospheric Cherenkov Telescopes pointing determination using the trajectories of the stars in the field of view
Mykhailo Dalchenko, Matthieu Heller
We present a new approach to the pointing determination of Imaging Atmospheric Cherenkov Telescopes (IACTs). This method is universal and can be applied to any IACT with minor modi…
GRB 080710: A narrow, structured jet showing a late, achromatic peak in the optical and infrared afterglow?
Kaori Obayashi, Ayumu Toriyama, Mayu Murakoshi +4
We present a possible theoretical interpretation of the observed afterglow emission of long gamma-ray burst GRB 080710. While its prompt GRB emission properties are normal, the aft…
Performance of the Large-Sized Telescope prototype of the Cherenkov Telescope Array
Daniel Morcuende, Rubén López-Coto, Abelardo Moralejo +2
The next-generation ground-based gamma-ray Cherenkov Telescope Array Observatory (CTAO) will consist of imaging atmospheric Cherenkov telescopes (IACTs) of three different sizes di…
Characterization of SiPM and development of test bench modules for the next-generation cameras for Large-Sized Telescopes for Cherenkov Telescope Array
Takayuki. Saito, K. Hashiyama, H. Iwasaki +5
The recent improvements in the performance of the silicon photomultipliers (SiPMs) made them attractive options as photo sensors of imaging atmospheric Cherenkov telescopes (IACTs)…
LST-1 observations of an enormous flare of BL Lacertae in 2021
Seiya Nozaki, Katsuaki Asano, Juan Escudero +2
The first prototype of LST (LST-1) for the Cherenkov Telescope Array has been in commissioning phase since 2018 and already started scientific observations with the low energy thre…
Two-component jet model for multiwavelength afterglow emission of the extremely energetic burst GRB 221009A
Yuri Sato, Kohta Murase, Yutaka Ohira +1
Recently gamma-ray bursts (GRBs) have been detected at very high-energy (VHE) gamma-rays by imaging atmospheric Cherenkov telescopes, and a two-component jet model has often been i…
Synchrotron Self-Compton Emission in the Two-Component Jet Model for Gamma-Ray Bursts
Yuri Sato, Kaori Obayashi, B. Theodre Zhang +4
Gamma-ray bursts (GRBs) are intense bursts of high-energy photons (prompt emissions) caused by relativistic jets. After the emissions, multi-wavelength afterglows, from radio to ve…
Off-axis jet scenario for early afterglow emission of low-luminosity gamma-ray burst GRB 190829A
Yuri Sato, Kaori Obayashi, Ryo Yamazaki +2
Recently, ground-based Imaging Atmospheric Cherenkov Telescopes have reported the detection of very-high-energy (VHE) gamma-rays from some gamma-ray bursts (GRBs). One of them, GRB…
Less noticeable shallow decay phase in early X-ray afterglows of GeV/TeV-detected gamma-ray bursts
Ryo Yamazaki, Yuri Sato, Takanori Sakamoto +1
The nature of the shallow decay phase in the X-ray afterglow of the gamma-ray burst (GRB) is not yet clarified. We analyze the data of early X-ray afterglows of 26 GRBs triggered b…