The nature of faint radio galaxies at high redshifts
Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 489:4 (2019) 5053-5075
When galaxies align: intrinsic alignments of the progenitors of elliptical galaxies in the Horizon-AGN simulation
(2019)
Estimating the molecular gas mass of low-redshift galaxies from a combination of mid-infrared luminosity and optical properties
(2019)
Hierarchical Black Hole Mergers in Active Galactic Nuclei.
Physical review letters American Physical Society (APS) 123:18 (2019) ARTN 181101
Abstract:
The origins of the stellar-mass black hole mergers discovered by LIGO/Virgo are still unknown. Here we show that if migration traps develop in the accretion disks of active galactic nuclei (AGNs) and promote the mergers of their captive black holes, the majority of black holes within disks will undergo hierarchical mergers-with one of the black holes being the remnant of a previous merger. 40% of AGN-assisted mergers detected by LIGO/Virgo will include a black hole with mass ≳50M_{⊙}, the mass limit from stellar core collapse. Hierarchical mergers at traps in AGNs will exhibit black hole spins (anti)aligned with the binary's orbital axis, a distinct property from other hierarchical channels. Our results suggest, although not definitively (with odds ratio of ∼1), that LIGO's heaviest merger so far, GW170729, could have originated from this channel.The Third Data Release of the Beijing鈥揂rizona Sky Survey
The Astrophysical Journal Supplement Series American Astronomical Society 245:1 (2019) 4