2 citations · 4 across the 8 of their papers we have counts for
9 papers
Characteristic evolution of conformal scattering: I. Scalar Waves in Minkowski Spacetime
Zhen-Tao He, Yu Tian, Hongbao Zhang
We study the conformal scattering of massless scalar waves in Minkowski spacetime. The conformal scattering problem is formulated as a Goursat (characteristic initial-value) proble…
Kink collisions in a two-dimensional gravity model
Zhen-Tao He, Yuan Zhong
We numerically study kink-antikink collisions in the self-gravitating model coupled to the two-dimensional dilaton gravity theory proposed by Mann et al. The static kink solu…
Disentangling the Morphology of Palomar~5: Effects of the Bar, Spiral Arms, LMC, and Halo Flattening
Zhenghao He, Long Wang, Zi-yi Zhou +2
The Palomar~5 (Pal~5) globular cluster and its tidal tails provide a sensitive probe of globular-cluster evolution in the time-dependent Milky Way potential. We study the past 3~Gy…
Constraining the Galactic bar and spiral pattern speeds with the Hyades tidal stream
Zi-yi Zhou, Long Wang, Tereza Jerabkova +1
We present a suite of direct -body simulations of the Hyades open cluster and its tidal stream in a Milky Way potential that includes a rotating bar and spiral arms. Using the h…
Can Oscillatory and Persistent Nonlinearities Be Bridged in Black Hole Ringdown?
Jun-Xi Shi, Zhen-Tao He, Jiageng Jiao +4
Quadratic quasinormal modes (QQNMs) and Christodoulou memory effect are key nonlinear phenomena in gravitational wave physics. QQNMs characterize the near zone nonlinear response o…
Nonlinear tails of massive scalar fields around a black hole
Caiying Shao, Zhen-Tao He, Jiageng Jiao +5
Nonlinear effects play a fundamental role in the late-time ringdown of black holes, with direct implications for gravitational-wave observations. For massive fields, these dynamics…
Taxonomy of periodic orbits and gravitational waves in a non-rotating Destounis-Suvorov-Kokkotas black hole spacetime
Zhutong Hua, Zhen-Tao He, Jiageng Jiao +2
In this paper, we investigate periodic orbits of test particles around a non-rotating Destounis-Suvorov-Kokkotas black hole and the resulting gravitational waves. Firstly, we exami…
Numerical computation of electromagnetically sourced nonlinear tails
Zhen-Tao He, Jia Du, Jiageng Jiao +4
Amazingly, recent studies indicate that nonlinear effects are of great significance for modelling black hole ringdown. Transient electromagnetic events in the astrophysical environ…
Nonlinear Evolution of unstable Charged de Sitter Black Holes with Hyperboloidal Formalism
Zhen-Tao He, Qian Chen, Yu Tian +2
Based on the hyperboloidal framework, we research the dynamical process of charged de Sitter black holes scattered by a charged scalar field. From the linear perturbation analysis,…