Tracking Star-forming Cores as Mass Reservoirs in Clustered and Isolated Regions Using Numerical Passive Tracer Particles

Nozaki, Shingo,   Fukushima, Hajime,   Tokuda, Kazuki,   Machida, Masahiro N.

Understanding the physical properties of star-forming cores as mass reservoirs for protostars and the impact of turbulence is crucial in star formation studies. We implemented passive tracer particles in clump-scale numerical simulations with turbulence strengths of . Unlike core identification methods used in observational studies, we identified 260 star-forming cores...

Cold gas bubble inflated by a low-luminosity radio jet

Murthy, Suma,   Morganti, Raffaella,   Oosterloo, Tom,   Mukherjee, Dipanjan,   Bayram, Suude,   Guillard, Pierre

We present NOEMA CO(2–1) observations of a nearby, young, low-luminosity radio source, B2 0258+35. Our earlier CO(1–0) study had shown the presence of strong jet- ISM interaction and a massive molecular gas outflow involving 75% of the circumnuclear gas. Our follow-up CO(2–1) observations have revealed even more complex gas kinematics,...

Detection of the [O I] 63 μm emission line from the z = 6.04 quasar J2054-0005

Ishii, Nozomi,   Hashimoto, Takuya,   Ferkinhoff, Carl,   Rybak, Matus,   Inoue, Akio K.,   Michiyama, Tomonari

We report the highest-redshift detection of [O I] 63 μm from a luminous quasar, J2054-0005, at z = 6.04 based on the Atacama Large Millimeter/sub-millimeter Array (ALMA) Band 9 observations. The [O I] 63 μm line luminosity is (4.51.5) × 109L⊙, corresponding to the [O I] 63 μm-to-far- infrared luminosity...

The structure of the stellar halo of the Andromeda galaxy explored with the NB515 for Subaru/HSC - I. New insights on the stellar halo up to 120 kpc

Ogami, Itsuki,   Tanaka, Mikito,   Komiyama, Yutaka,   Chiba, Masashi,   Guhathakurta, Puragra,   Kirby, Evan N.

We analyse the M31 halo and its substructure within a projected radius of 120 kpc using a combination of Subaru/HSC NB515 and Canada France Hawaii Telescope/MegaCam g and i bands. We succeed in separating M31’s halo stars from foreground contamination with ~90 per cent accuracy by using the surface gravity...

Survey of non-thermal electrons around supermassive black holes through polarization flips

Tsunetoe, Yuh,   Kawashima, Tomohisa,   Ohsuga, Ken,   Mineshige, Shin

Optically thick non-thermal synchrotron sources notably produce linear polarization vectors that are parallel to projected magnetic field lines on the observer’s screen, although they are perpendicular in well-known optically thin cases. To elucidate the complex relationship between the vectors and fields, and to investigate the energy and spatial distribution of...

Impact of the Lyα radiation force on super-Eddington accretion on to a massive black hole

Mushano, Takuya,   Ogawa, Takumi,   Ohsuga, Ken,   Yajima, Hidenobu,   Omukai, Kazuyuki

The viability of super-Eddington accretion remains a topic of intense debate, crucial for understanding the formation of supermassive black holes in the early universe. However, the impact of the Lyα radiation force on this issue remains poorly understood. We investigate the propagation of the Lyα photons and evaluate the Lyα...

Cosmological evolution of dark matter subhaloes under tidal stripping by growing Milky Way-like galaxies

Kazuno, Yudai,   Mori, Masao,   Kaneda, Yuka,   Otaki, Koki

We present the findings of a comprehensive and detailed analysis of merger tree data from ultra-high-resolution cosmological N-body simulations. The analysis, conducted with a particle mass resolution of 5 × 103 h-1 M⊙ and a halo mass resolution of 107 h-1 M⊙, provides sufficient accuracy to suppress numerical artefacts. This...

GR-RMHD Simulations of Super-Eddington Accretion Flows onto a Neutron Star with Dipole and Quadrupole Magnetic Fields

Inoue, Akihiro,   Ohsuga, Ken,   Takahashi, Hiroyuki R.,   Asahina, Yuta,   Middleton, Matthew J.

Although ultraluminous X-ray pulsars (ULXPs) are believed to be powered by super-Eddington accretion onto a magnetized neutron star (NS), the detailed structures of the inflow–outflow and magnetic fields are still not well understood. We perform general relativistic radiation magnetohydrodynamics (GR-RMHD) simulations of super-Eddington accretion flows onto a magnetized NS with...

Dynamics of a Galaxy at z > 10 Explored by JWST Integral Field Spectroscopy: Hints of Rotating Disk Suggesting Weak Feedback

Xu, Yi,   Ouchi, Masami,   Yajima, Hidenobu,   Fukushima, Hajime,   Harikane, Yuichi,   Isobe, Yuki

We investigate the dynamics of GN-z11, a luminous galaxy at z = 10.60, carefully analyzing the public deep integral field spectroscopy (IFS) data taken with the JWST NIRSpec integral field unit. While the observations of the IFS data originally targeted an He II clump near GN-z11, we find that the...

Radiation and outflow properties of super-Eddington accretion flows around various mass classes of black holes: Dependence on the accretion rates

Yoshioka, Shogo,   Mineshige, Shin,   Ohsuga, Ken,   Kawashima, Tomohisa,   Kitaki, Takaaki

We perform axisymmetric two-dimensional radiation-hydrodynamic simulations of super-Eddington accretion flow and outflow around black holes to examine the properties of radiation and outflow as functions of the black hole mass and the accretion rate on to the black hole (ṀBH). We find that the ṁBH(≡ṀBHc2∕LEdd) dependence of Lrad∕LEdd and Lmech∕LEdd...

Strong He I Emission Lines in High N/O Galaxies at z ~ 6 Identified in JWST Spectra: High He/H Abundance Ratios or High Electron Densities?

Yanagisawa, Hiroto,   Ouchi, Masami,   Watanabe, Kuria,   Matsumoto, Akinori,   Nakajima, Kimihiko,   Yajima, Hidenobu

We present He I/Hβ flux and He/H abundance ratios in three James Webb Space Telescope galaxies with significant constraints on N/O abundance ratios, GS-NDG-9422, RXCJ2248-ID, and GLASS150008 at z ~ 6 mostly with the spectroscopic coverage from He I λ4471 and He II λ4686 to He I λ7065, and comparing...

Balmer Decrement Anomalies in Galaxies at z ~ 6 Found by JWST Observations: Density-bounded Nebulae or Excited H I Clouds?

Yanagisawa, Hiroto,   Ouchi, Masami,   Nakajima, Kimihiko,   Yajima, Hidenobu,   Umeda, Hiroya,   Baba, Shunsuke

We investigate the physical origins of the Balmer decrement anomalies in GS-NDG-9422 and RXCJ2248-ID galaxies at z ~ 6 whose Hα/Hβ values are significantly smaller than 2.7, the latter of which also shows anomalous Hγ/Hβ and Hδ/Hβ values beyond the errors. Because the anomalous Balmer decrements are not reproduced under...

A universal scaling relation incorporating the cusp-to-core transition of dark matter halos

Kaneda, Yuka,   Mori, Masao,   Otaki, Koki

The dark matter halos associated with galaxies have hitherto established strong correlations within a range of observed parameters, known as scaling relations of dark matter halos. The origin of these scaling relations still contains significant ambiguities and requires comprehensive exploration for complete understanding. Utilising the correlation between the concentration and...

Impacts of stellar wind and supernovae on star cluster formation: Origins of extremely high N/O ratios and multiple stellar populations

Fukushima, Hajime,   Yajima, Hidenobu

We study metal enrichment originating from stellar wind and supernovae in low-metallicity clouds by performing three-dimensional radiation hydrodynamics simulations. We find that metals ejected from stellar wind are accumulated, leading to subsequent star formation in the nitrogen-enriched gas. During this early phase, the N∕O ratios are similar to observed nitrogen-enriched...

General Relativistic Radiation Magnetohydrodynamics Simulations of Precessing Tilted Super-Eddington Disks

Asahina, Yuta,   Ohsuga, Ken

We perform a three-dimensional general relativistic radiation magnetohydrodynamics simulation of a tilted super-Eddington accretion disk around a spinning black hole (BH). The disk, which tilts and twists as it approaches the BH, precesses while maintaining its shape. The gas is mainly ejected around the rotation axis of the outer part...

Evolution of the Termination Region of the Parsec-scale Jet of 3C 84 Over the Past 20 yr

Kam, Minchul,   Hodgson, Jeffrey A.,   Park, Jongho,   Kino, Motoki,   Nagai, Hiroshi,   Trippe, Sascha

We present the kinematics of the parsec-scale jet in 3C 84 from 2003 November to 2022 June observed with the Very Long Baseline Array at 43 GHz. We find that the C3 component, a bright feature at the termination region of the jet component ejected from the core in 2003,...

Tracking Star-forming Cores as Mass Reservoirs in Clustered and Isolated Regions Using Numerical Passive Tracer Particles

Nozaki, Shingo,   Fukushima, Hajime,   Tokuda, Kazuki,   Machida, Masahiro N.

Cold gas bubble inflated by a low-luminosity radio jet

Murthy, Suma,   Morganti, Raffaella,   Oosterloo, Tom,   Mukherjee, Dipanjan,   Bayram, Suude,   Guillard, Pierre

Detection of the [O I] 63 μm emission line from the z = 6.04 quasar J2054-0005

Ishii, Nozomi,   Hashimoto, Takuya,   Ferkinhoff, Carl,   Rybak, Matus,   Inoue, Akio K.,   Michiyama, Tomonari

The structure of the stellar halo of the Andromeda galaxy explored with the NB515 for Subaru/HSC - I. New insights on the stellar halo up to 120 kpc

Ogami, Itsuki,   Tanaka, Mikito,   Komiyama, Yutaka,   Chiba, Masashi,   Guhathakurta, Puragra,   Kirby, Evan N.

Survey of non-thermal electrons around supermassive black holes through polarization flips

Tsunetoe, Yuh,   Kawashima, Tomohisa,   Ohsuga, Ken,   Mineshige, Shin

Impact of the Lyα radiation force on super-Eddington accretion on to a massive black hole

Mushano, Takuya,   Ogawa, Takumi,   Ohsuga, Ken,   Yajima, Hidenobu,   Omukai, Kazuyuki

Cosmological evolution of dark matter subhaloes under tidal stripping by growing Milky Way-like galaxies

Kazuno, Yudai,   Mori, Masao,   Kaneda, Yuka,   Otaki, Koki

GR-RMHD Simulations of Super-Eddington Accretion Flows onto a Neutron Star with Dipole and Quadrupole Magnetic Fields

Inoue, Akihiro,   Ohsuga, Ken,   Takahashi, Hiroyuki R.,   Asahina, Yuta,   Middleton, Matthew J.

Dynamics of a Galaxy at z > 10 Explored by JWST Integral Field Spectroscopy: Hints of Rotating Disk Suggesting Weak Feedback

Xu, Yi,   Ouchi, Masami,   Yajima, Hidenobu,   Fukushima, Hajime,   Harikane, Yuichi,   Isobe, Yuki

Radiation and outflow properties of super-Eddington accretion flows around various mass classes of black holes: Dependence on the accretion rates

Yoshioka, Shogo,   Mineshige, Shin,   Ohsuga, Ken,   Kawashima, Tomohisa,   Kitaki, Takaaki

Strong He I Emission Lines in High N/O Galaxies at z ~ 6 Identified in JWST Spectra: High He/H Abundance Ratios or High Electron Densities?

Yanagisawa, Hiroto,   Ouchi, Masami,   Watanabe, Kuria,   Matsumoto, Akinori,   Nakajima, Kimihiko,   Yajima, Hidenobu

Balmer Decrement Anomalies in Galaxies at z ~ 6 Found by JWST Observations: Density-bounded Nebulae or Excited H I Clouds?

Yanagisawa, Hiroto,   Ouchi, Masami,   Nakajima, Kimihiko,   Yajima, Hidenobu,   Umeda, Hiroya,   Baba, Shunsuke

A universal scaling relation incorporating the cusp-to-core transition of dark matter halos

Kaneda, Yuka,   Mori, Masao,   Otaki, Koki

Impacts of stellar wind and supernovae on star cluster formation: Origins of extremely high N/O ratios and multiple stellar populations

Fukushima, Hajime,   Yajima, Hidenobu

General Relativistic Radiation Magnetohydrodynamics Simulations of Precessing Tilted Super-Eddington Disks

Asahina, Yuta,   Ohsuga, Ken

Evolution of the Termination Region of the Parsec-scale Jet of 3C 84 Over the Past 20 yr

Kam, Minchul,   Hodgson, Jeffrey A.,   Park, Jongho,   Kino, Motoki,   Nagai, Hiroshi,   Trippe, Sascha

Violent Starbursts and Quiescence Induced by Far-ultraviolet Radiation Feedback in Metal-poor Galaxies at High Redshift

Sugimura, Kazuyuki,   Ricotti, Massimo,   Park, Jongwon,   Garcia, Fred Angelo Batan,   Yajima, Hidenobu

Radio Images inside Highly Magnetized Jet Funnels Based on Semianalytic GRMHD Models

Ogihara, Taiki,   Kawashima, Tomohisa,   Ohsuga, Ken

Radiation MHD Simulations of Soft X-Ray Emitting Regions in Changing Look AGN

Igarashi, Taichi,   Takahashi, Hiroyuki R.,   Kawashima, Tomohisa,   Ohsuga, Ken,   Matsumoto, Yosuke,   Matsumoto, Ryoji

A Relativistic Formula for the Multiple Scattering of Photons

Takahashi, Rohta,   Umemura, Masayuki,   Ohsuga, Ken,   Asahina, Yuta,   Takeda, Rintaro,   Takahashi, Mikiya M.

JWST Identification of Extremely Low C/N Galaxies with [N/O] ≳ 0.5 at z 6-10 Evidencing the Early CNO-cycle Enrichment and a Connection with Globular Cluster Formation

Isobe, Yuki,   Ouchi, Masami,   Tominaga, Nozomu,   Watanabe, Kuria,   Nakajima, Kimihiko,   Umeda, Hiroya

Transonic galactic wind model including stellar feedbacks and application to outflows in high/low-z galaxies

Igarashi, Asuka,   Mori, Masao,   Nitta, Shin-ya

Frequency of the dark matter subhalo collisions and bifurcation sequence arising formation of dwarf galaxies

Otaki, Koki,   Mori, Masao

FOREVER22: Gas and metal outflow from massive galaxies in protocluster regions

Harada, Naoki,   Yajima, Hidenobu,   Abe, Makito

Generation of high circular polarization of interstellar Lyman α radiation triggering biological homochirality

Fukushima, Hajime,   Yajima, Hidenobu,   Umemura, Masayuki

The formation of globular clusters with top-heavy initial mass functions

Fukushima, Hajime,   Yajima, Hidenobu

Precessing jet nozzle connecting to a spinning black hole in M87

Cui, Yuzhu,   Hada, Kazuhiro,   Kawashima, Tomohisa,   Kino, Motoki,   Lin, Weikang,   Mizuno, Yosuke

FOREVER22: The first bright galaxies with population III stars at redshifts z ≈ 10-20 and comparisons with JWST data

Yajima, Hidenobu,   Abe, Makito,   Fukushima, Hajime,   Ono, Yoshiaki,   Harikane, Yuichi,   Ouchi, Masami

Cosmological-scale Lyα Forest Absorption around Galaxies and AGNs Probed with the HETDEX and SDSS Spectroscopic Data

Sun, Dongsheng,   Mawatari, Ken,   Ouchi, Masami,   Ono, Yoshiaki,   Yajima, Hidenobu,   Zhang, Yechi

Morphologies of Galaxies at z ≳ 9 Uncovered by JWST/NIRCam Imaging: Cosmic Size Evolution and an Identification of an Extremely Compact Bright Galaxy at z 12

Ono, Yoshiaki,   Harikane, Yuichi,   Ouchi, Masami,   Yajima, Hidenobu,   Abe, Makito,   Isobe, Yuki

EMPRESS. XI. SDSS and JWST Search for Local and z 4-5 Extremely Metal-poor Galaxies (EMPGs): Clustering and Chemical Properties of Local EMPGs

Nishigaki, Moka,   Ouchi, Masami,   Nakajima, Kimihiko,   Ono, Yoshiaki,   Rauch, Michael,   Isobe, Yuki

EMPRESS. IX. Extremely Metal-poor Galaxies are Very Gas-rich Dispersion-dominated Systems: Will the James Webb Space Telescope Witness Gaseous Turbulent High-z Primordial Galaxies?

Isobe, Yuki,   Ouchi, Masami,   Nakajima, Kimihiko,   Ozaki, Shinobu,   Bouché, Nicolas F.,   Wise, John H.