4 papers
Orbital Decay of Short-Period Exoplanets via Tidal Resonance Locking
Linhao Ma, Jim Fuller
A large fraction of known exoplanets have short orbital periods where tidal excitation of gravity waves within the host star causes the planets' orbits to decay. We study the effec…
Seeds Don't Sink: Even Massive Black Hole "Seeds" Cannot Migrate to Galaxy Centers Efficiently
Linhao Ma, Philip F. Hopkins, Xiangcheng Ma +3
Possible formation scenarios of supermassive black holes in the early universe include rapid growth from less massive seed black holes (BHs) via super-Eddington accretion or runawa…
Most Black Holes are Born Very Slowly Rotating
Jim Fuller, Linhao Ma
The age of gravitational wave (GW) astronomy has begun, and black hole (BH) mergers detected by LIGO are providing novel constraints on massive star evolution. A major uncertainty…
Angular momentum transport in massive stars and natal neutron star rotation rates
Linhao Ma, Jim Fuller
The internal rotational dynamics of massive stars are poorly understood. If angular momentum (AM) transport between the core and the envelope is inefficient, the large core AM upon…