12 papers
Stellar rotation of S301 as a macroscopic gyroscope to test general relativity
Pau Amaro Seoane, Xian Chen, Alejandro Torres-Orjuela +16
The paper studies how the rotation of the S301 star near the Galactic Center can act as a macroscopic gyroscope, using its relativistic precession to test general relativity with i…
Gravitational Wave Astronomy With TianQin
En-Kun Li, Shuai Liu, Alejandro Torres-Orjuela +50
The paper outlines the scientific potential of the TianQin space‑based gravitational‑wave observatory, describing the types of compact‑object sources it can detect in the mHz band…
Hubble constant measurement with 13 bright standard sirens from binary black hole mergers inside active galactic nuclei
Dhruv Kumar, Alejandro Torres-Orjuela
We measure the Hubble constant using 13 gravitational-wave binary black hole mergers associated with active galactic nucleus hosts. We find $H_0=70.50^{+3.37}_{-2.89}\,({\rm…
A population of LIGO-Virgo-KAGRA mergers happening inside active galactic nuclei
Dhruv Kumar, Alejandro Torres-Orjuela
Multimessenger observations of compact binary mergers in active galactic nuclei (AGN) offer unique probes of black hole formation channels and cosmology. We analyse 18 gravitationa…
Relativistic Tidal Dissipation and the Gravitational-wave Signal of a White Dwarf Orbiting an Intermediate-Mass Black Hole
Yang Yang, Leif Lui, Alejandro Torres-Orjuela +1
Finding intermediate-mass black holes (IMBHs) and measuring their masses and spins are key to understanding massive black hole formation. White dwarf (WD)-IMBH binaries provide a u…
Pitching Cosmic Curveballs: Environmental Effects on Extreme-Mass-Ratio Inspirals with Spinning Secondaries
Leif Lui, Lisa V. Drummond, Alejandro Torres-Orjuela
Much like the aerodynamic deflection of a spinning curveball, a rotating secondary in an extreme-mass-ratio inspiral (EMRI) experiences Magnus and lift forces, in addition to the s…