000007078 001__ 7078
000007078 005__ 20241010112426.0
000007078 037__ $$aSCART-2024-0165
000007078 100__ $$aLeong, Samson
000007078 245__ $$aConstraining binary mergers in AGN disks using the non-observation of lensed gravitational waves
000007078 260__ $$c2024
000007078 520__ $$aThe dense and dynamic environments within active galactic nuclei (AGN) accretion disks may serve as prolific birthplaces for binary black holes (BBHs) and one possible origin for some of the BBHs detected by gravitational-wave (GW) observatories. We show that a considerable fraction of the BBH in AGN disks will be strongly lensed by the central supermassive black hole (SMBH). Thus, the non-observation of lensed GW signals can be used to constrain the fraction of BBH binaries residing in AGN disks. The non-detection of lensing with current O(100) detections will be sufficient to start placing constraints on the fraction of BBHs living within accretion disks near the SMBH. In the next-generation detectors era, with O(105) BBH observations and no lensed events, we will be able to rule out most migration traps as dominant birthplaces of BBH mergers; moreover, we will be able to constrain the minimum size of the accretion disk. On the other hand, should AGNs constitute a major formation channel, lensed events from AGNs will become prominent in the future.
000007078 594__ $$aNO
000007078 700__ $$aJanquart, Justin 
000007078 700__ $$aSharma, Aditya Kumar
000007078 700__ $$aMartens, Paul
000007078 700__ $$aParameswaran, Ajith
000007078 700__ $$aHannuksela, Otto Anukseli
000007078 773__ $$pPhysical Review Letters$$y2024
000007078 8560_ $$fjustin.janquart@ksb-orb.be
000007078 905__ $$asubmitted to
000007078 980__ $$aNONREF