4 papers
No hair but plenty of feathers: are birds black holes?
Andrew Laeuger, Taylor Knapp
The imitative verb "chirp" is thought to originate from 16th-century Middle English. Meanwhile, this same word has been used to describe the gravitational waves (GWs) emitted from…
Prospects for High-Frequency Gravitational-Wave Detection with GEO600
Christopher M. Jungkind, Brian C. Seymour, Andrew Laeuger +1
Current ground-based interferometers are optimized for sensitivity from a few tens of Hz to about 1 kHz. While they are not currently utilized for GW detection, interferometric det…
The ringdown of a black hole surrounded by a thin shell of matter
Andrew Laeuger, Colin Weller, Dongjun Li +1
Recent studies have shown that far-field perturbations to the curvature potential of a black hole spacetime may destabilize its quasinormal mode (QNM) spectrum while only mildly af…
Simulating the Galactic population of axion clouds around stellar-origin black holes: Gravitational wave signals in the 10-100 kHz band
Jacob R. Sprague, Shane L. Larson, Zhiyuan Wang +6
Ultralight scalar fields can experience runaway `superradiant' amplification near spinning black holes, resulting in a macroscopic `axion cloud' which slowly dissipates via continu…