Search Results for author: Jiaxin Han

Found 4 papers, 3 papers with code

You Can Mask More For Extremely Low-Bitrate Image Compression

1 code implementation27 Jun 2023 Anqi Li, Feng Li, Jiaxin Han, Huihui Bai, Runmin Cong, Chunjie Zhang, Meng Wang, Weisi Lin, Yao Zhao

Extensive experiments have demonstrated that our approach outperforms recent state-of-the-art methods in R-D performance, visual quality, and downstream applications, at very low bitrates.

Image Compression

A natural boundary of dark matter haloes revealed around the minimum bias and maximum infall locations

no code implementations8 Aug 2020 Matthew Fong, Jiaxin Han

The minimum of the bias trough defines a characteristic depletion radius, which is located within the infall region bounded by the inner depletion radius and the turnaround radius, while approaching the turnaround radius in low mass haloes that have stopped mass accretion.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

A unified model for the spatial and mass distribution of subhaloes

2 code implementations7 Sep 2015 Jiaxin Han, Shaun Cole, Carlos S. Frenk, Yipeng Jing

N-body simulations suggest that the substructures that survive inside dark matter haloes follow universal distributions in mass and radial number density.

Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

The orbital PDF: general inference of the gravitational potential from steady-state tracers

1 code implementation2 Jul 2015 Jiaxin Han, Wenting Wang, Shaun Cole, Carlos S. Frenk

We develop two general methods to infer the gravitational potential of a system using steady-state tracers, i. e., tracers with a time-independent phase-space distribution.

Astrophysics of Galaxies Cosmology and Nongalactic Astrophysics

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