26 papers
Diverse ionized gas conditions in a dynamically hot, interacting galaxy at revealed by JWST/NIRSpec IFU
Ryota Ikeda, Takahiro Morishita, Massimo Stiavelli +1
We present a spatially and spectrally resolved study of an interacting galaxy, Gz9p3 at , using the James Webb Space Telescope NIRSpec/G395H IFU observation with high-spect…
A Type Ia Supernova Candidate at : A Transient Interloper in the Search for Galaxies
Seiji Toshikage, Takahiro Morishita, Masaomi Tanaka +9
The James Webb Space Telescope (JWST) is opening a new window into the distant Universe by discovering galaxies and transients in the early Universe. We investigate a high-redshift…
BEACON: JWST NIRCam Pure-parallel Imaging Survey. IV. A Systematic Search for Galaxy Overdensities and Evidence for Gas Accretion Mode Transition
Ryo Albert Sutanto, Takahiro Morishita, Tadayuki Kodama +20
We systematically search for galaxy overdensities using 20 independent fields with a minimum of six filters (F090W, F115W, F150W, F277W, F356W, and F444W) from BEACON, the JWST Cyc…
JWST lensed quasar dark matter survey IV: Stringent warm dark matter constraints from the joint reconstruction of extended lensed arcs and quasar flux ratios
D. Gilman, A. M. Nierenberg, T. Treu +23
We present a measurement of the free-streaming length of dark matter (DM) and subhalo abundance around 28 quadruple image strong lenses using observations from JWST MIRI presented…
The Incidence of Large Ionized Bubbles at Redshift 13
Peter Ziwei Hu, Massimo Stiavelli, Colin Norman
Ionized bubbles around the first galaxies link early galaxy growth, ionizing photon escape, intergalactic-medium topology, Lyα visibility, 21 cm structure, and the timing of reion…
A recoiling supermassive black hole in a powerful quasar
Marco Chiaberge, Takahiro Morishita, Matteo Boschini +14
Supermassive black holes (SMBH) are thought to grow through accretion of matter and mergers. Models of SMBH mergers have long suffered the final parsec problem, where SMBH binaries…