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Aug 16, 2021

A Low-amplitude Double-mode Delta Scuti Star with Amplitude Modulation

The Delta Scuti stars show rich oscillation modes in observations, both of radial and non-radial oscillation are detected. Different modes show different propagation behaviors in the star and reflect different properties of the stellar s...
Jun 16, 2021

The Reconstruction of Dark Energy by the Ridge Regression Approach

Since cosmic acceleration was first discovered in 1998 by Riess et al., physicists have predicted the existence of dark energy to explain the accelerating expansion of the universe. Meanwhile, dark energy theory can be used to explain th...
Jun 02, 2021

Deciphering Star Cluster Evolution by Shape Morphology

Open clusters are an important part of the Milky Way. The morphology of the open clusters is an interesting topic which can be used to better understand their evolution. However, the lack of statistical analysis on the clusters' morpholo...
May 31, 2021

A Single Pulse Study of a Millisecond Pulsar PSR J0621+1002

Millisecond pulsars (MSPs) are characteristic by their stable rotations. It is possible to detect nanohertz gravitational waves by monitoring pulse times of arrival (ToAs) of an ensemble of the most stable MSPs. The success of this exper...
May 26, 2021

Research in the radio/X-ray correlation of hard X-ray selected Seyfert galaxies sample

Almost every galaxy contains a supermassive black hole (SMBH) at its centre. The SMBH will become active when surrounding material is captured by the black hole (BH) gravitational potential well, forming an accretion disc and emitting mu...
May 07, 2021

FAST detected the three-dimensional spin-velocity alignment in a pulsar

Dr. YAO Jumei and a team of astronomers have conducted an investigation based on FAST observation that led to the discovery of the first evidence for three-dimensional (3D) spin-velocity alignment in pulsars. Pulsar, rotating neutron sta...

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