Zobrazeno 1 - 10
of 159
pro vyhledávání: '"Kawakatu, Nozomu"'
The physical quantity that directly controls the feedback of active galactic nuclei (AGNs) in elliptical galaxies remains to be determined. The discovery of molecular gas around the AGNs suggests that the gas is fueling the AGNs. Therefore, we analyz
Externí odkaz:
http://arxiv.org/abs/2310.03794
We report dual-frequency very long baseline interferometry (VLBI) observations at 22 and 43 GHz toward the nucleus of a nearby radio galaxy NGC 4261. In particular, we present a VLBI image of the 22 GHz H2O maser line and its location in the circumnu
Externí odkaz:
http://arxiv.org/abs/2304.13245
We investigated dusty and dust-free gas dynamics for a radiation-driven sub-pc scale outflow in an active galactic nucleus (AGN) associated with a supermassive black hole $10^7 M_\odot$ and bolometric luminosity $10^{44}$ erg s$^{-1}$ based on the tw
Externí odkaz:
http://arxiv.org/abs/2304.05950
Massive molecular clouds have been discovered in massive elliptical galaxies at the center of galaxy clusters. Some of this cold gas is expected to flow in the central supermassive black holes and activate galactic nucleus (AGN) feedback. In this stu
Externí odkaz:
http://arxiv.org/abs/2303.16927
Autor:
Kameno, Seiji, Sawada-Satoh, Satoko, Impellizzeri, C. M. Violette, Kohno, Kotaro, Martín, Sergio, Espada, Daniel, Nakai, Naomasa, Sugai, Hajime, Terashima, Yuichi, Lee, Minju M., Kawakatu, Nozomu
The radio galaxy NGC 1052 casts absorption features of sulfur-bearing molecules, H$_2$S, SO, SO$_2$, and CS toward the radio continuum emission from the core and jets. Using ALMA, we have measured the equivalent widths of SO absorption features in mu
Externí odkaz:
http://arxiv.org/abs/2301.07273
Autor:
Uchiyama, Hisakazu, Yamashita, Takuji, Nagao, Tohru, Ono, Yoshiaki, Toshikawa, Jun, Ichikawa, Kohei, Kawakatu, Nozomu, Kajisawa, Masaru, Toba, Yoshiki, Matsuoka, Yoshiki, Kubo, Mariko, Imanishi, Masatoshi, Ito, Kei, Kawaguchi, Toshihiro, Lee, Chien-Hsiu, Saito, Tomoki
We report on the galaxy density environment around a high-z radio galaxy (HzRG) at z=4.72, HSC J083913.17+011308.1 (HSC J0839+0113), probed using an r-dropout Lyman break galaxy (LBG) sample from the Hyper Suprime-Cam Subaru Strategic Program data. W
Externí odkaz:
http://arxiv.org/abs/2208.14632
Autor:
Uchiyama, Hisakazu, Yamashita, Takuji, Nagao, Tohru, Ichikawa, Kohei, Toba, Yoshiki, Ishikawa, Shogo, Kubo, Mariko, Kajisawa, Masaru, Kawaguchi, Toshihiro, Kawakatu, Nozomu, Lee, Chien-Hsiu, Noboriguchi, Akatoki
We examine the redshift evolution of density environments around 2,163 radio galaxies with the stellar masses of $\sim10^{9}-10^{12} M_\odot$ between redshifts of $z=0.3-1.4$, based on the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) and Fain
Externí odkaz:
http://arxiv.org/abs/2206.06630
Autor:
Uchiyama, Hisakazu, Yamashita, Takuji, Toshikawa, Jun, Kashikawa, Nobunari, Ichikawa, Kohei, Kubo, Mariko, Ito, Kei, Kawakatu, Nozomu, Nagao, Tohru, Toba, Yoshiki, Ono, Yoshiaki, Harikane, Yuichi, Imanishi, Masatoshi, Kajisawa, Masaru, Lee, Chien-Hsiu, Liang, Yongming
We present the environmental properties around high-$z$ radio galaxies (HzRGs) at $z\sim4$, which have been poorly investigated because of their rarity. We use the largest samples of HzRGs and $g$-dropout galaxy overdense regions at $z\sim4$, which w
Externí odkaz:
http://arxiv.org/abs/2112.01684
Autor:
Kino, Motoki, Niinuma, Kotaro, Kawakatu, Nozomu, Nagai, Hiroshi, Giovannini, Gabriele, Orienti, Monica, Wajima, Kiyoaki, D'Ammando, Filippo, Hada, Kazuhiro, Giroletti, Marcello, Gurwell, Mark
We report multi-epoch Very Long Baseline Interferometric (VLBI) observations of the compact radio lobe in the radio galaxy 3C84 (NGC1275) during 2016 - 2020. The image sequence of 3C84 reveals that the hotspot in the radio lobe showed the one-year lo
Externí odkaz:
http://arxiv.org/abs/2110.11082
Massive Molecular Gas as a Fuel Tank for Active Galactic Nuclei Feedback in Central Cluster Galaxies
Publikováno v:
The Astrophysical Journal, 924:24 (14pp), 2022 January 1
Massive molecular gas has been discovered in giant elliptical galaxies at the centers of galaxy clusters. To reveal its role in active galactic nucleus (AGN) feedback in those galaxies, we construct a semianalytical model of gas circulation. This mod
Externí odkaz:
http://arxiv.org/abs/2108.01671