Characterizing the assembly of dark matter halos with protohalo size histories: I. Redshift evolution, relation to descendant halos, and halo assembly bias

Kavli Affiliate: Yingjie Peng | First 5 Authors: Kai Wang, H. J. Mo, Yangyao Chen, Huiyuan Wang, Xiaohu Yang | Summary: We propose a novel method to quantify the assembly histories of dark matter halos with the redshift evolution of the mass-weighted spatial variance of their progenitor halos, i.e. the protohalo size history. We find […]


Continue.. Characterizing the assembly of dark matter halos with protohalo size histories: I. Redshift evolution, relation to descendant halos, and halo assembly bias

A large population of strongly lensed faint submillimetre galaxies in future dark energy surveys inferred from JWST imaging

Kavli Affiliate: Luis C. Ho | First 5 Authors: James Pearson, Stephen Serjeant, Wei-Hao Wang, Zhen-Kai Gao, Arif Babul | Summary: Bright galaxies at sub-millimetre wavelengths from Herschel are now well known to be predominantly strongly gravitationally lensed. The same models that successfully predicted this strongly lensed population also predict about one percent of faint […]


Continue.. A large population of strongly lensed faint submillimetre galaxies in future dark energy surveys inferred from JWST imaging

A large population of strongly lensed faint submillimetre galaxies in future dark energy surveys inferred from JWST imaging

Kavli Affiliate: Luis C. Ho | First 5 Authors: James Pearson, Stephen Serjeant, Wei-Hao Wang, Zhen-Kai Gao, Arif Babul | Summary: Bright galaxies at sub-millimetre wavelengths from Herschel are now well known to be predominantly strongly gravitationally lensed. The same models that successfully predicted this strongly lensed population also predict about one percent of faint […]


Continue.. A large population of strongly lensed faint submillimetre galaxies in future dark energy surveys inferred from JWST imaging

VLBI Observations of a sample of Palomar-Green quasars II: characterising the parsec-scale radio emission

Kavli Affiliate: Luis C. Ho | First 5 Authors: Ailing Wang, Tao An, Yingkang Zhang, Xiaopeng Cheng, Luis C. Ho | Summary: This study uses multi-frequency Very Long Baseline Interferometry (VLBI) to study the radio emission from 10 radio-quiet quasars (RQQs) and four radio-loud quasars (RLQs). The diverse morphologies, radio spectra, and brightness temperatures observed […]


Continue.. VLBI Observations of a sample of Palomar-Green quasars II: characterising the parsec-scale radio emission

UV-Optical Emission of AB Aur b is Consistent with Scattered Stellar Light

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Yifan Zhou, Brendan P. Bowler, Haifeng Yang, Aniket Sanghi, Gregory J. Herczeg | Summary: The proposed protoplanet AB Aur b is a spatially concentrated emission source imaged in the mm-wavelength disk gap of the Herbig Ae/Be star AB Aur. Its near-infrared spectrum and absence of strong […]


Continue.. UV-Optical Emission of AB Aur b is Consistent with Scattered Stellar Light

On the dominant role of wind in the quasar feedback mode in the late stage evolution of massive elliptical galaxies

Kavli Affiliate: Yingjie Peng | First 5 Authors: , , , , | Summary: In this paper we investigate the role of AGN feedback on the late stage evolution of elliptical galaxies by performing high-resolution hydrodynamical simulation in the {it MACER} framework. By comparing models that take into account different feedback mechanisms, namely AGN and […]


Continue.. On the dominant role of wind in the quasar feedback mode in the late stage evolution of massive elliptical galaxies

A search for pulsars around Sgr A* in the first Event Horizon Telescope dataset

Kavli Affiliate: Lijing Shao | First 5 Authors: Pablo Torne, Kuo Liu, Ralph P. Eatough, Jompoj Wongphechauxsorn, James M. Cordes | Summary: The Event Horizon Telescope (EHT) observed in 2017 the supermassive black hole at the center of the Milky Way, Sagittarius A* (Sgr A*), at a frequency of 228.1 GHz ($lambda$=1.3 mm). The fundamental […]


Continue.. A search for pulsars around Sgr A* in the first Event Horizon Telescope dataset

Intrinsic antiferromagnetic topological insulator and axion state in V2WS4

Kavli Affiliate: Jing Wang | First 5 Authors: Yadong Jiang, Huan Wang, Kejie Bao, Jing Wang, | Summary: Intrinsic magnetic topological insulators offers an ideal platform to explore exotic topological phenomena, such as axion electrodynamics, quantum anomalous Hall (QAH) effect and Majorana edge modes. However, these emerging new physical effects have rarely been experimentally observed […]


Continue.. Intrinsic antiferromagnetic topological insulator and axion state in V2WS4

Electromagnetic signatures of white dwarf collisions in AGN discs

Kavli Affiliate: Luis C. Ho | First 5 Authors: Shu-Rui Zhang, Yan Luo, Xiao-Jun Wu, Jian-Min Wang, Luis C. Ho | Summary: In the inner region of the disc of an active galactic nucleus (AGN), the collision of two white dwarfs (WDs) through Jacobi capture might be inevitable, leading to a Type Ia supernova (SN […]


Continue.. Electromagnetic signatures of white dwarf collisions in AGN discs

White Dwarf–White Dwarf collisions in AGN discs via close encounters

Kavli Affiliate: Luis C. Ho | First 5 Authors: Yan Luo, Xiao-Jun Wu, Shu-Rui Zhang, Jian-Min Wang, Luis C. Ho | Summary: White dwarfs (WDs) in active galactic nucleus (AGNs) discs might migrate to the inner radii of the discs and form restricted three-body systems with two WDs moving around the central supermassive black hole […]


Continue.. White Dwarf–White Dwarf collisions in AGN discs via close encounters