Zobrazeno 1 - 10
of 104
pro vyhledávání: '"Chung Ming Ko"'
We use a semi-empirical model to investigate the radial acceleration relation (RAR) in a cold dark matter (CDM) framework. Specifically, we build 80 model galaxies covering the same parameter space as the observed galaxies in the SPARC database, assi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1315ad8a42303fa953a17cd3ce0d4b8f
http://arxiv.org/abs/2202.03421
http://arxiv.org/abs/2202.03421
We investigate a kinematic scaling relation between the baryonic mass and the flat velocity dispersion, i.e. mass-velocity dispersion relation (MVDR), from the brightest cluster galaxies (BCGs) to the galaxy clusters. In our studies, the baryonic mas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2aadd5f96a4193df3fc715e397acc49e
Autor:
T. Kuwabara, Chung Ming Ko
The effect of cosmic rays on the Parker-Jeans instability in magnetized self-gravitating gaseous disks is studied by three-dimensional magnetohydrodynamic (MHD) simulations with cosmic rays taken as a massless fluid with notable pressure. Cosmic ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42f6f94b5558b8f26631553782d91c97
Publikováno v:
Nuclear and Particle Physics Proceedings. :72-79
We give a short review of processes of stochastic acceleration in the Galaxy. We discuss: how to estimate correctly the number of accelerated particles, and at which condition the stochastic mechanism is able to generate power-law nonthermal spectra.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0ec6307c88bd3b6ebadf7360fa9d6d3
https://doi.org/10.1016/j.nuclphysbps.2018.07.011
https://doi.org/10.1016/j.nuclphysbps.2018.07.011
Publikováno v:
Nuclear and Particle Physics Proceedings. :80-84
We analyze interaction of fast charged particles with Galactic molecular clouds. As a results of energy losses inside the clouds, a particle flux, converging to the cloud, is formed in the cloud vicinity. This flux, in its turn, excites there an MHD-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48a1eb9ddcc956efd5c65e40ad321c8b
https://doi.org/10.1016/j.nuclphysbps.2018.07.012
https://doi.org/10.1016/j.nuclphysbps.2018.07.012
Publikováno v:
Astronomy & Astrophysics. 654:A63
Plasma outflow from a gravitational potential well with cosmic rays and self-excited Alfv\'en waves with cooling and wave damping is studied in the hydrodynamics regime. We study outflows in the presence of cosmic ray and Alfv\'en waves including the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::deb922c03490932e0f9c24ef4db33039
https://doi.org/10.1051/0004-6361/202141047
https://doi.org/10.1051/0004-6361/202141047
Capture and tidal disruption of stars by the supermassive black hole in the Galactic center (GC) should occur regularly. The energy released and dissipated by this processes will affect both the ambient environment of the GC and the Galactic halo. A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2969d6bc6af9aa567aa35b73d84cbdbe
http://arxiv.org/abs/1904.03958
http://arxiv.org/abs/1904.03958
Autor:
Chung Ming Ko, Yong Tian
Recently, from the new Spitzer Photometry and Accurate Rotation Curves (SPARC) data, McGaugh et al. (2016) reported a tight Radial Acceleration Relation (RAR) between the observed total acceleration and the acceleration produced by baryons in spiral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08c1b9a5349298b0011368a5f37f76cb
Publikováno v:
The Astrophysical Journal. 910:56
We investigate the mass-velocity dispersion relation (MVDR) in 29 galaxy clusters in the HIghest X-ray FLUx Galaxy Cluster Sample (HIFLUGCS). We measure the spatially resolved, line-of-sight velocity dispersion profiles of these clusters, which we fi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e64bcac419e33079d8b286d388a24e5
https://doi.org/10.3847/1538-4357/abe45c
https://doi.org/10.3847/1538-4357/abe45c
Publikováno v:
The Astrophysical Journal. 905:117
Plasma outflow or wind against a gravitational potential under the influence of cosmic rays is studied in the context of hydrodynamics. Cosmic rays interact with the plasma via hydromagnetic fluctuations. In the process, cosmic rays advect and diffus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87b10059e3579e8bfb2c6059abf54e78
https://doi.org/10.3847/1538-4357/abc82b
https://doi.org/10.3847/1538-4357/abc82b