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- The University of TokyoJP41 papers
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8 papers · 1 filter
Vigorous turbulence driven by quasar-mode feedback in a cluster core
Satoshi Yamada, Shutaro Ueda, Hirofumi Noda +9
Quasars are among the most luminous objects. They are powered by accretion onto supermassive black holes. They are thought to impact cosmological evolution primarily through energe…
A black hole in a near-pristine galaxy 700 million years after the Big Bang
Roberto Maiolino, Hannah Uebler, Francesco D'Eugenio +36
The recent discovery of a large number of massive black holes within the first two billion years after the Big Bang, as well as their peculiar properties, have been largely unexpec…
New Methods of Identifying AGN in the Early Universe using Spectroscopy and Photometry in the JWST Era
Flor Arevalo Gonzalez, Titanilla Braun, James Trussler +7
We explore spectroscopic and photometric methods for identifying high-redshift galaxies containing an Active Galactic Nucleus (AGN) with JWST observations. After demonstrating the…
The Density and Ionization Profile of Optically Dark and High Redshift GRBs Probed by X-ray Absorption
Eka Puspita Arumaningtyas, Hasan Al Rasyid, Maria Giovanna Dainotti +1
The X-ray column density (NHX) of gamma-ray bursts (GRBs) can probe the local environment of their progenitors over a wide redshift range. Previous work has suggested an increasing…
Signatures of large-scale cold fronts in the optically-selected merging cluster HSC J085024+001536
Keigo Tanaka, Ryuichi Fujimoto, Nobuhiro Okabe +5
We represent a joint X-ray, weak-lensing, and optical analysis of the optically-selected merging cluster, HSC J085024+001536, from the Subaru HSC-SSP survey. Both the member galaxy…
The isotropic interplanetary dust cloud and near-infrared extragalactic background light observed with COBE/DIRBE
Kei Sano, Shuji Matsuura, Kazuma Yomo +1
We report observation of isotropic interplanetary dust (IPD) by analyzing the infrared (IR) maps of Diffuse Infrared Background Experiment (DIRBE) onboard the Cosmic Background Exp…