2025ApJ...993L..30L

Query : 2025ApJ...993L..30L

2025ApJ...993L..30L - Astrophys. J., 993, L30 (2025/November-1)

On the Formation of GW231123 in Population III Star Clusters.

LIU S., WANG L., TANIKAWA A., WU W. and FUJII M.S.

Abstract (from CDS):

GW231123 is a binary black hole (BBH) merger whose primary component lies within or above the pair-instability mass gap, while the secondary component falls within this gap. The standard theory of stellar evolution is significantly challenged by this event. We investigate the formation of candidate progenitors of GW231123 in Population III (Pop III) star clusters. We find that they could form through stellar mergers, BBH mergers, and mixed mergers. The mass distribution of these candidate progenitors covers the component masses of GW231123. Under our model assumptions, their predicted merger rate density spans the range of 0.001-0.26 Gpc–3 yr–1, encompassing that of GW231123. These findings suggest that GW231123 may originate from Pop III star clusters. Furthermore, such candidate progenitors are expected to be detectable by future gravitational-wave detectors LISA/Taiji/TianQin/DECIGO/Cosmic Explorer/Einstein Telescope, which would provide valuable insights into the formation scenarios of events like GW231123.

Abstract Copyright: © 2025. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Population III stars - -N-body simulations - Astrophysical black holes - Gravitational wave astronomy

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GrW 231123 GWE ~ ~           ~ 28 0

Query : 2025ApJ...993L..30L

Basic data :
GrW 231123 -- Gravitational Wave Event
Other object types: otypes_help 		GWE (GrW)
ICRS coord. (ep=J2000) : 		No Coord.

Identifiers (2) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

GrW 231123 GrW 231123 135430

References (28 between 1850 and 2026) (Total 28)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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