79 citations · 461 across the 13 of their papers we have counts for
13 papers
Hot Jupiters' Isolation Is Not Unique to High-Eccentricity Tidal Migration
Brandon Radzom, Songhu Wang, Bonan Pu +2
Conventionally, the observed isolation of hot Jupiters, marked by a paucity of nearby low-mass planetary companions, has been interpreted as evidence of high-eccentricity tidal mig…
Detecting Secular Perturbations in Kepler Planetary Systems Using Simultaneous Impact Parameter Variation Analysis (SIPVA)
Zhixing Liu, Bonan Pu
Secular impact-parameter variations encode dynamical perturbations and can help reveal unseen companions or constrain planetary masses when combined with dynamical interpretation.…
The Aligned Orbit of WASP-148b, the Only Known Hot Jupiter with a Nearby Warm Jupiter Companion, from NEID and HIRES
Xian-Yu Wang, Malena Rice, Songhu Wang +39
We present spectroscopic measurements of the Rossiter-McLaughlin effect for WASP-148b, the only known hot Jupiter with a nearby warm-Jupiter companion, from the WIYN/NEID and Keck/…
Strong Scatterings of Cold Jupiters and their Influence on Inner Low-mass Planet Systems: Theory and Simulations
Bonan Pu, Dong Lai
Recent observations have indicated a strong connection between compact ( au) super-Earth and mini-Neptune systems and their outer ( a few au) giant plane…
Giant Planet Scatterings and Collisions: Hydrodynamics, Merger-Ejection Branching Ratio, and Properties of the Remnants
Jiaru Li, Dong Lai, Kassandra R. Anderson +1
Planetary systems with sufficiently small orbital spacings can experience planetary mergers and ejections. The branching ratio of mergers vs ejections depends sensitively on the tr…
In-Situ Scattering of Warm Jupiters and Implications for Dynamical Histories
Kassandra R. Anderson, Dong Lai, Bonan Pu
Many warm Jupiters (WJs) have substantial eccentricities, which are linked to their formation and migration histories. This paper explores eccentricity excitation of WJs due to pla…
Low-Eccentricity Migration of Ultra-Short Period Planets in Multi-Planet Systems
Bonan Pu, Dong Lai
Recent studies suggest that ultra-short period planets (USPs), Earth-sized planets with sub-day periods, constitute a statistically distinct sub-sample of {\it Kepler} planets: USP…
Eccentricities and Inclinations of Multi-Planet Systems with External Perturbers
Bonan Pu, Dong Lai
Compact multi-planet systems containing super-Earths or sub-Neptunes, commonly found around solar-type stars, may be surrounded by external giant planet or stellar companions, whic…
How do External Companions Affect Spin-Orbit Misalignment of Hot Jupiters?
Dong Lai, Kassandra R. Anderson, Bonan Pu
Consider a planet with its orbital angular momentum axis aligned with the spin axis of its host star. To what extent does an inclined distant companion (giant planet or binary star…
Ohmic Dissipation in Mini-Neptunes
Bonan Pu, Diana Valencia
In the presence of a magnetic field and weakly ionizing winds, ohmic dissipation is expected to take place in the envelopes of Jovian and lower-mass planets alike. While the proces…
Hiding Planets Behind a Big Friend: Mutual Inclinations of Multi-Planet Systems with External Companions
Dong Lai, Bonan Pu
The {\it Kepler} mission has detected thousands of planetary systems with 1-7 transiting planets packed within 0.7~au from their host stars. There is an apparent excess of single-t…
Spacing of Kepler Planets: Sculpting by Dynamical Instability
Bonan Pu, Yanqin Wu
We study the orbital architecture of multi-planet systems detected by the Kepler transit mission using N-body simulations, focusing on the orbital spacing between adjacent planets…
Early dark energy and its interaction with dark matter
Bo-Yu Pu, Xiao-Dong Xu, Bin Wang +1
We study a class of early dark energy models which has substantial amount of dark energy in the early epoch of the universe. We examine the impact of the early dark energy fluctuat…