70 citations · 183 across the 8 of their papers we have counts for
8 papers
On the mechanism of black hole energy reduction in the Blandford-Znajek process
Kenji Toma, Fumio Takahara, Masanori Nakamura
The Blandford-Znajek (BZ) process is steady electromagnetic energy release from rotating black holes (BHs) along magnetic field lines threading them and widely believed to drive re…
Magnetization degree at the jet base of M87 derived from the event horizon telescope data: Testing magnetically driven jet paradigm
M. Kino, F. Takahara, K. Hada +3
We explore the degree of magnetization at the jet base of M87 by using the observational data of the event horizon telescope (EHT) at 230~GHz obtained by Doeleman et al. By utilizi…
Calorimetry of Active Galactic Nucleus jets: testing plasma composition in Cygnus A
Motoki Kino, Nozomu Kawakatu, Fumio Takahara
We examine plasma composition of jets in active galactic nuclei through the comparison of the total pressure () with partial pressures of electrons and protons in a cocoon. The…
Invisible Plasma Content in Blazars? The Case of Markarian 421
M. Kino, F. Takahara
Invisible plasma content in blazar jets such as protons and/or thermal electron-positron () pairs is explored through combined arguments of dynamical and radiative process…
Chandra Discovery of an X-ray Jet and Lobes in 3C 15
J. Kataoka, J. P. Leahy, P. G. Edwards +5
We report the Chandra detection of an X-ray jet in 3C 15. The peak of the X-ray emission in the jet is 4.1'' (a projected distance of 5.1 kpc) from the nucleus, and coincident with…
Relativistic Outflow of Electron-Positron Pair Plasma from a Wien Equilibrium State
S. Iwamoto, F. Takahara
We investigate a novel mechanism of bulk acceleration for relativistic jets of pure electron-positron pair plasma.We assumed that relativistically hot plasma is optically thick for…