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Multimessenger Implications of AT2018cow: High-Energy Cosmic Ray and Neutrino Emissions from Magnetar-Powered Super-Luminous Transients
Ke Fang, Brian D. Metzger, Kohta Murase +2
Newly-born, rapidly-spinning magnetars have been invoked as the power sources of super-luminous transients, including the class of "fast-luminous optical transients" (FBOTs). The e…
Ultrahigh-energy cosmic-ray nuclei and neutrinos from engine-driven supernovae
B. Theodore Zhang, Kohta Murase
Transrelativistic supernovae (SNe), which are likely driven by central engines via jets or winds, have been among candidate sources of ultrahigh-energy cosmic rays (UHECRs). We inv…
Dust formation in embryonic pulsar-aided supernova remnants
Conor Omand, Kazumi Kashiyama, Kohta Murase
We investigate effects of energetic pulsar wind nebulae (PWNe) on dust formation and evolution. Dust emission has been observed in many supernova remnants that also have neutron st…
Acceleration and Escape Processes of High-energy Particles in Turbulence inside Hot Accretion Flows
Shigeo S. Kimura, Kengo Tomida, Kohta Murase
We investigate acceleration and propagation processes of high-energy particles inside hot accretion flows. The magnetorotational instability (MRI) creates turbulence inside accreti…
Origin and Impacts of the First Cosmic Rays
Yutaka Ohira, Kohta Murase
Nonthermal phenomena are ubiquitous in the Universe, and cosmic rays (CRs) play various roles in different environments. When, where, and how CRs are first generated since the Big…
The Giant Radio Array for Neutrino Detection (GRAND): Science and Design
GRAND Collaboration, Jaime Alvarez-Muniz, Rafael Alves Batista +48
The Giant Radio Array for Neutrino Detection (GRAND) is a planned large-scale observatory of ultra-high-energy (UHE) cosmic particles, with energies exceeding 10^8 GeV. Its goal is…