The alpha disk model is widely used to describe the accretion
disk structures around supermassive black holes, even though it
cannot explain many observed properties of AGNs. Various
alternative models have been proposed including the ones
where...
Deep generative models offer powerful tools for solving
astrophysical inference problems by enabling flexible
representations of prior knowledge and likelihood functions.
In the first part of the talk, I will discuss how generative
models can be...
The so-called galaxy--halo connection is a vast topic concerning
how galaxies populate their host dark matter halos. I will
present some works we have made under this grand theme, including
(1) the detection of assembly bias signal with the help of...
The first structures of particle dark matter form by
gravitationally condensing out of the smooth mass distribution of
the early universe. This formation mechanism leaves these "prompt
cusps" with uniquely compact r^-1.5 density profiles and
links...
Neutron stars born with magnetic fields greater than 1014 G
(“magnetars”) are common in the Galaxy. Approximately 10 - 50% of
the young neutron star population possesses such field strengths.
These objects exhibit very slow rotation, spectacular...
Stars orbiting sufficiently close to massive black holes
inevitably inspiral towards the black hole due to gravitational
wave radiation. The fate of such stars is subtle and depends on an
interplay between tidal heating of the star, mass transfer...
Observations of fluctuations in the CMB provide information
about primordial inhomogeneities in the universe. However, the
B-mode polarization of the inflationary gravitational wave is
contaminated by the Galactic dust and synchrotron foreground...
