15 papers
Unified kinetic theory of induced scattering: Compton, Brillouin, and Raman processes in magnetized electron and positron pair plasma
Rei Nishiura, Shoma F. Kamijima, Kunihito Ioka
We extend a unified theoretical framework for induced (stimulated) scattering-parametric instabilities of electromagnetic waves, including induced Compton, stimulated Brillouin, an…
Cross-correlating galaxies and cosmic dispersion measures: Constraints on the gas-to-halo mass relation from 2MASS galaxies and 133 localized fast radio bursts
Masato Shirasaki, Ryuichi Takahashi, Ken Osato +1
We conduct a cross-correlation analysis between large-scale structures traced by the Two Micron All Sky Survey (2MASS) galaxy catalog and the cosmic dispersion measures of 133 loca…
Measurement of angular cross-correlation between the cosmological dispersion measure and the thermal Sunyaev--Zeldovich effect
Ryuichi Takahashi, Kunihito Ioka, Masato Shirasaki +1
The dispersion measures () from fast radio bursts (FRBs) and the thermal Sunyaev--Zeldovich (tSZ) effect probe the free-electron density and thermal pressure, respective…
Mass and Spin Growth of Very Massive Stars in Star Clusters Potentially Associated with Little Red Dots
Ataru Tanikawa, Masaru Shibata, Kunihito Ioka
Using gravitational -body simulations, we investigate the evolution of mass and spin for very massive stars (VMSs) in dense star clusters, which could subsequently evolve into L…
Induced Scattering of Strong Waves in Pair Plasmas
Masanori Iwamoto, Kunihito Ioka
We study induced (stimulated) scattering of linearly polarized, strong electromagnetic waves in pair plasmas, which is crucial for understanding the propagation of fast radio burst…
Little Red Dots as Hidden Neutrino Sources
Riku Kuze, Kunihito Ioka, Kohta Murase +2
Little Red Dots (LRDs) are enigmatic, compact, red galaxies at high redshift, -, discovered by the James Webb Space Telescope. Broad emission lines in the absence of X-…