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Status: Bibliographieeintrag

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Verfasst von:Wei, Dandan [VerfasserIn]   i
 Schneider, Fabian [VerfasserIn]   i
 Podsiadlowski, Philipp [VerfasserIn]   i
 Laplace, Eva [VerfasserIn]   i
 Röpke, Friedrich [VerfasserIn]   i
 Vetter, Marco [VerfasserIn]   i
Titel:Evolution and final fate of massive post-common-envelope binaries
Verf.angabe:Dandan Wei, Fabian R.N. Schneider, Philipp Podsiadlowski, Eva Laplace, Friedrich K. Röpke, and Marco Vetter
E-Jahr:2024
Jahr:August 2024
Umfang:20 S.
Illustrationen:Illustrationen
Fussnoten:Online veröffentlicht: 08. August 2024 ; Gesehen am 23.09.2024
Titel Quelle:Enthalten in: Astronomy and astrophysics
Ort Quelle:Les Ulis : EDP Sciences, 1969
Jahr Quelle:2024
Band/Heft Quelle:688(2024) vom: Aug., Artikel-ID A87, Seite 1-20
ISSN Quelle:1432-0746
Abstract:Mergers of neutron stars (NSs) and black holes (BHs) are nowadays observed routinely thanks to gravitational-wave (GW) astronomy. In the isolated binary-evolution channel, a common-envelope (CE) phase of a red supergiant (RSG) and a compact object is crucial to sufficiently shrink the orbit and thereby enable a merger via GW emission. Here, we use the outcomes of two three-dimensional (3D) magneto-hydrodynamic CE simulations of an initially 10.0 solar-mass RSG with a 5.0 solar-mass BH and a 1.4 solar-mass NS, respectively, to explore the further evolution and final fate of the remnant binaries (post-CE binaries). Notably, the 3D simulations reveal that the post-CE binaries are likely surrounded by circumbinary disks (CBDs), which contain substantial mass and angular momentum to influence the subsequent evolution. The binary systems in MESA modelling undergo another phase of mass transfer and we find that most donor stars do not explode in ultra-stripped supernovae (SNe), but rather in Type Ib/c SNe. Without NS kicks, the final orbital configurations of our models with the BH companion are too wide to allow for a compact object merger within a Hubble time. NS kicks are actually required to sufficiently perturb the orbit and thus facilitate a merger via GW emission. Moreover, we explore the influence of CBDs observed in 3D CE simulations on the evolution and final fate of the post-CE binaries. We find that mass accretion from the disk widens the binary orbit, while resonant interactions between the CBD and the binary can shrink the separation and increase the eccentricity of the binary depending on the disk mass and lifetime. Efficient resonant contractions may even enable a BH or NS to merge with the remnant He stars before a second SN explosion, which may be observed as gamma-ray burst-like transients, luminous fast blue optical transients, and Thorne-Żytkow objects. For the surviving post-CE binaries, the CBD-binary interactions may significantly increase the GW-induced double compact merger fraction. We conclude that accounting for CBD may be crucial to better understand observed GW mergers.
DOI:doi:10.1051/0004-6361/202348560
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

kostenfrei: Volltext: https://doi.org/10.1051/0004-6361/202348560
 kostenfrei: Volltext: https://www.aanda.org/articles/aa/abs/2024/08/aa48560-23/aa48560-23.html
 DOI: https://doi.org/10.1051/0004-6361/202348560
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1903204291
Verknüpfungen:→ Zeitschrift

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