105 citations · 1.4k across the 66 of their papers we have counts for
21 papers · 1 filter
Fate of baby radio galaxies: Dead or Alive ?
Nozomu Kawakatu, Hiroshi Nagai, Motoki Kino
In order to reveal the long-term evolution of relativistic jets in active galactic nuclei (AGNs), we examine the dynamical evolution of variously-sized radio galaxies [i.e., compac…
Exploring the disk-jet connection from the properties of narrow line regions in powerful young radio-loud AGNs
Nozomu Kawakatu, Tohru Nagao, Jong-Hak Woo
We investigate the optical emission-line flux ratios of narrow-line regions, in order to determine whether the formation of AGN jets requires specific accretion conditions. We find…
New prediction of extragalactic GeV gamma-ray emission from radio lobes of young AGN jets
M. Kino, H. Ito, N. Kawakatu +1
We present a new prediction of GeV -ray emission from radio lobes of young AGN jets. In the previous work of Kino et al. (2007), MeV -ray bremsstrahlung emission was predicte…
The estimate of kinetic powers of jets in FRII radio galaxies: existence of invisible components?
H. Ito, M. Kino, N. Kawakatu +2
We investigate the total kinetic powers (L_j) and ages (t_age) of powerful jets in FR II radio galaxies by comparison of the dynamical model of expanding cocoons with observations.…
The Fate of Young Radio Galaxies: Decelerations Inside Host Galaxies?
Nozomu Kawakatu, Hiroshi Nagai, Motoki Kino
We examine the evolution of variously-sized radio galaxies [i.e., compact symmetric objects (CSOs), medium-size symmetric objects (MSOs), Fanaroff-Riley type II radio galaxies (FRI…
Long Gamma-Ray Bursts and Their Host Galaxies at High Redshift
A. Lapi, N. Kawakatu, Z. Bosnjak +4
Motivated by the recent observational and theoretical evidence that long Gamma-Ray Bursts (GRBs) are likely associated with low metallicity, rapidly rotating massive stars, we exam…