28 citations · 283 across the 35 of their papers we have counts for
35 papers
Pulsation harmonics reveal the origin of the century-old Blazhko effect
Jia-Shu Niu
The Blazhko effect -- a quasi-periodic modulation of pulsation amplitude and phase observed in all subtypes of RR Lyrae stars -- has defied physical explanation for over a century.…
Harmonics as a Hidden Window into the Turbulent Convective Envelope of non-Blazhko RRab Stars
Jia-Shu Niu
Harmonics in pulsating stars have traditionally been regarded as mere Fourier artifacts, fully determined by their parent mode. Recent observations of high-amplitude Scuti star…
BE Lyncis: A Pulsating Star in the Most Eccentric Binary with a Massive Unseen Companion
Jia-Shu Niu, Ying Zhang, Hui-Fang Xue
We report the discovery of an exceptionally eccentric binary system, BE Lyncis (BE Lyn), which might host a compact companion with mass . By combining TESS p…
Discovery of resonating integration modes in triple-mode high-amplitude Scuti stars: A new evolutionary phase indicator
Jia-Shu Niu, Hui-Fang Xue
High-amplitude Scuti stars (HADS) that pulsate in their first three radial modes are rare in current samples. Here, we analyse five such triple-mode HADS observed by the Transi…
Period Variation Rates of Four Radial Single-Mode High-Amplitude Delta Scuti Stars
Tian-Fang Ma, Jia-Shu Niu, Hui-Fang Xue
In this work, we present a study on the long time-scale period variations of four single-mode high-amplitude delta Scuti stars (HADS) via the classical analysis. The target H…
Exploring the Dark Frontier: White Dwarf-Based Constraints on Light Dark Matter
Jia-Shu Niu
In the vast expanse of our galaxy, white dwarfs (WDs) are natural sentinels, capturing the enigmatic dark matter (DM) particles that incessantly traverse their interiors. These cel…
Exploring the unexpected: Disharmonized harmonic pulsation modes in high-amplitude Scuti stars
Hui-Fang Xue, Jia-Shu Niu
Harmonics are a ubiquitous feature across various pulsating stars. They are traditionally viewed as mere replicas of the independent primary pulsation modes and have thus been excl…
Calibration of the Cryogenic Measurement System of a Resonant Haloscope Cavity
Dong He, Jie Fan, Xin Gao +23
Possible light bosonic dark matter interactions with the Standard Model photon have been searched by microwave resonant cavities. In this paper, we demonstrate the cryogenic readou…
Dark photon constraints from a 7.139 GHz cavity haloscope experiment
Dong He, Jie Fan, Xin Gao +23
The dark photon is a promising candidate for the dark matter which comprises most of the matter in our visible Universe. Via kinetic mixing with the Standard Model it can also be r…
Possible Dark Matter Signals from White Dwarfs
Jia-Shu Niu, Hui-Fang Xue
In our galaxy, the white dwarfs (WDs) will inevitably capture the dark matter (DM) particles streaming through them, if there exist interactions between DM particles and nuclei/ele…
Unveiling the Intricate Symphony of Nonlinear Pulsation Mode Interactions in High-Amplitude Scuti Stars
Jia-Shu Niu, Hui-Fang Xue
People can diagnose the interiors of stars by sensing their pulsations. Pulsation modes, which are determined by the internal state and structure of a star, are typically considere…
Pulsation Analysis of High-Amplitude Scuti Stars with TESS
Wangjunting Xue, Jia-Shu Niu, Hui-Fang Xue +1
In this work, the pulsation analysis is performed on 83 high-amplitude Scuti stars, which have been observed by the Transiting Exoplanet Survey Satellite (TESS). The results sh…
Uncorrelated Amplitude and Frequency Variations of the Harmonics in SX Phoenicis Star XX Cygni
Jia-Shu Niu, Yue Liu, Hui-Fang Xue
Harmonics are quite common in pulsating stars, and they are always considered to mimic the behaviors of their independent parent pulsation modes and not taken as the key informatio…
Quantitative study of the hardening in the Alpha Magnetic Spectrometer nuclei spectra at a few hundred GV
Jia-Shu Niu, Jing Liu
The most significant feature in the cosmic-ray (CR) nuclei spectra is the spectral hardening at a few hundred GV. It is important to know whether the hardening of different nuclei…
Precise Evolutionary Asteroseismology of High-Amplitude δ Scuti Star AE Ursae Majoris
Hui-Fang Xue, Jia-Shu Niu, Jian-Ning Fu
Stellar structure and evolution theory is one of the basis in modern astronomy. Stellar inner structures and their evolutionary states can be precisely tested by asteroseismology,…
ET White Paper: To Find the First Earth 2.0
Jian Ge, Hui Zhang, Weicheng Zang +163
We propose to develop a wide-field and ultra-high-precision photometric survey mission, temporarily named "Earth 2.0 (ET)". This mission is designed to measure, for the first time,…
Hybrid origins of the cosmic-ray nuclei spectral hardening at a few hundred GV
Jia-Shu Niu
Many experiments have confirmed the spectral hardening at a few hundred GV of cosmic-ray (CR) nuclei spectra, and three general different origins have been proposed: the primary so…
A rapidly evolving high-amplitude Scuti star crossing the Hertzsprung Gap
Jia-Shu Niu, Hui-Fang Xue
In this work, we report the discovery of the rapidly evolving high-amplitude Scuti star KIC 6382916 (J19480292+4146558) which is crossing the Hertzsprung gap. According to the…
Origin of hardening in spectra of cosmic ray nuclei at a few hundred GeV using AMS-02 data
Jia-Shu Niu
Many experiments have confirmed the spectral hardening in a few hundred GV of cosmic ray (CR) nuclei spectra, and 3 different origins have been proposed: the primary source acceler…
DY Pegasi: An SX Phoenicis Star in a Binary System with an Evolved Companion
Hui-Fang Xue, Jia-Shu Niu
In this work, the photometric data from the American Association of Variable Star Observers are collected and analyzed on the SX Phoenicis star DY Pegasi (DY Peg). From the frequen…
Comment on "Probing the Dark Matter-Electron Interactions via Hydrogen-Atmosphere Pulsating White Dwarfs''
Jia-Shu Niu, Hui-Fang Xue
In Phys. Rev. D 98, 103023 (2018), a novel scenario was proposed to probe the interactions between dark matter (DM) particles and electrons, via hydrogen-atmosphere pulsating white…
Some new hints on cosmic-ray propagation from AMS-02 nuclei spectra
Jia-Shu Niu, Hui-Fang Xue
In this work, we considered 2 schemes (a high-rigidity break in primary source injections and a high-rigidity break in diffusion coefficient) to reproduce the newly released AMS-02…
NGC 1893: a young open cluster rich in multi-type variable stars
Hui-Fang Xue, Jian-Ning Fu, Nami Mowlavi +4
In this work, we have studied the variable stars in the young open cluster NGC 1893 based on a multi-year photometric survey covering a sky area around the cluster up to $31' \time…
Bayesian analysis of the hardening in AMS-02 nuclei spectra
Jia-Shu Niu, Tianjun Li, Hui-Fang Xue
Based on the precise nuclei data released by AMS-02, we study the spectra hardening of both the primary (proton, helium, carbon, oxygen, and the primary component of nitrogen) and…