Author ORCID Identifier

Christensen, Nelson: 0000-0002-6870-4202
Chiadini, Francesco: 0000-0002-9339-8622
Keitel, David: 0000-0002-2824-626X
Shcheblanov, Nikita: 0000-0001-8696-2435
Pan, Kuo-Chuan: 0000-0002-1473-9880
Edy, Oliver: 0000-0001-9617-8724
Arun, K G: 0000-0002-6960-8538
Sorrentino, Nunziato: 0000-0002-1855-5966
Asali, Yasmeen: 0000-0002-8320-2198
Nuttall, Laura Kate: 0000-0001-7472-0201
Nakamura, Kouji: 0000-0001-6148-4289
Macas, Ronaldas: 0000-0002-6096-8297
Harry, Ian: 0000-0002-5304-9372
Strang, Lucy: 0000-0001-7834-9235
Parisi, Alessandro: 0000-0003-0251-8914
Lundgren, Andrew: 0000-0002-0363-4469
Nakano, Hiroyuki: 0000-0001-7665-0796
Williamson, Andrew: 0000-0002-7627-8688
Mozzon, Simone: 0000-0002-8855-2509
Edelman, Bruce: 0000-0001-7648-1689

Document Type


Publication Date



After the detection of gravitational waves from compact binary coalescences, the search for transient gravitational-wave signals with less well-defined waveforms for which matched filtering is not well suited is one of the frontiers for gravitational-wave astronomy. Broadly classified into short less than or similar to 1 s and long greater than or similar to 1 s duration signals, these signals are expected from a variety of astrophysical processes, including non-axisymmetric deformations in magnetars or eccentric binary black hole coalescences. In this work, we present a search for long-duration gravitational-wave transients from Advanced LIGO and Advanced Virgo's third observing run from April 2019 to March 2020. For this search, we use minimal assumptions for the sky location, event time, waveform morphology, and duration of the source. The search covers the range of 2-500 s in duration and a frequency band of 24-2048 Hz. We find no significant triggers within this parameter space; we report sensitivity limits on the signal strength of gravitational waves characterized by the root-sum-square amplitude h(rss) as a function of waveform morphology. These hrss limits improve upon the results from the second observing run by an average factor of 1.8.

Publication Source (Journal or Book title)

Physical Review D