10 papers
The Distinctive Evolution and Spectral Energy Distribution of Binary Massive Black Hole Accretion
Yue Xu, Fu-Guo Xie, Ya-Ping Li +2
Binary (super-)massive black holes (BHs) are expected to reside in the center of some galaxies. In this work, we re-visit accretion onto binary massive BHs, incorporating recent ad…
A 0.03 Hz Radio Quasi-periodic Oscillation During the 2025 Flare of GRS 1915+105
Ya Xing Li, Lei Liu, Wu Jiang +3
Our weekly-cadence radio monitoring campaign captured a bright flare in 2025 from the microquasar GRS 1915+105, observed simultaneously in the S- and X-bands (2.25 GHz and 8.42 GHz…
TESS observations of the Pleiades cluster: a nursery for delta Scuti stars
Timothy R. Bedding, Simon J. Murphy, Courtney Crawford +8
We studied 89 A- and F-type members of the Pleiades open cluster, including five escaped members. We measured projected rotational velocities (v sin i) for 49 stars and confirmed t…
Planet Migration in Protoplanetary Disks with Rims
Zhuoya Cao, Ya-Ping Li, Douglas N. C. Lin +1
Complex structures, including sharp edges, rings and gaps, have been commonly observed in protoplanetary disks with or without planetary candidates. Here we consider the possibilit…
Outward Migration of a Gas Accreting Planet: A Semi-Analytical Formula
Shigeru Ida, Ya-Ping Li, Jun-Peng Pan +2
Type II orbital migration is a key process to regulate the mass and semimajor axis distribution of exoplanetary giant planets. The conventional formula of type II migration general…
Concurrent Accretion and Migration of Giant Planets in their Natal Disks with Consistent Accretion Torque (II): Parameter Survey and Condition for Outward Migration
JunPeng Pan, Ya-Ping Li, Yi-Xian Chen +2
Migration typically occurs during the formation of planets and is closely linked to the planetary formation process. In classical theories of non-accreting planetary migration, bot…