902 citations · 16k across the 315 of their papers we have counts for
8 papers · 2 filters
Radio Quiet AGNs as Possible Sources of Ultra-high Energy Cosmic Rays
Asaf Pe'er, Kohta Murase, Peter Mészáros
Active galactic nuclei (AGNs) have been one of the most widely discussed sources of ultrahigh-energy cosmic rays (UHECRs). The recent results of Pierre Auger observatory (PAO) have…
Escape-limited Model of Cosmic-ray Acceleration Revisited
Yutaka Ohira, Kohta Murase, Ryo Yamazaki
The spectrum of cosmic rays (CRs) is affected by their escape from an acceleration site. This may have been observed not only in the gamma-ray spectrum of young supernova remnants…
High-energy emission as a test of the prior emission model for gamma-ray burst afterglows
Kohta Murase, Kenji Toma, Ryo Yamazaki +2
We study high-energy gamma-ray afterglow emission from gamma-ray bursts (GRBs) in the prior emission model, which is proposed to explain the plateau phase of the X-ray afterglow. T…
Propagation of ultrahigh energy nuclei in clusters of galaxies: resulting composition and secondary emissions
K. Kotera, D. Allard, K. Murase +4
We study the survival of ultrahigh energy nuclei injected in clusters of galaxies, as well as their secondary neutrino and photon emissions, using a complete numerical propagation…
Probing the central engine of long gamma-ray bursts and hypernovae with gravitational waves and neutrinos
Yudai Suwa, Kohta Murase
There are the two common candidates as the viable energy source for the central engine of long gamma-ray bursts (GRBs) and hypernovae (HNe), neutrino annihilation and magnetic fiel…
Probing the birth of fast rotating magnetars through high-energy neutrinos
Kohta Murase, Peter Meszaros, Bing Zhang
We investigate the high-energy neutrino emission expected from newly born magnetars surrounded by their stellar ejecta. Protons might be accelerated up to 0.1-100 EeV energies poss…