Double-core evolution and the formation of neutron-star binaries with compact companions

Autor:	Ph. Podsiadlowski, J. D. M. Dewi, A. Sena
Jazyk:	angličtina
Rok vydání:	2006
Předmět:	Physics Range (particle radiation) Astrophysics (astro-ph) FOS: Physical sciences Binary number Astronomy and Astrophysics Astrophysics Core (optical fiber) Neutron star Common envelope Space and Planetary Science Primary (astronomy) Population synthesis Communication channel
Popis:	We present the results of a systematic exploration of an alternative evolutionary scenario to form double neutron-star binaries, first proposed by Brown (1995), which does not involve a neutron star passing through a common envelope. In this scenario, the initial binary components have very similar masses, and both components have left the main sequence before they evolve into contact; preferably the primary has already developed a CO core. We have performed population synthesis simulations to study the formation of double neutron star binaries via this channel and to predict the orbital properties and system velocities of such systems. We obtain a merger rate for DNSs in this channel in the range of 0.1 - 12/Myr. These rates are still subject to substantial uncertainties such as the modelling of the contact phase. MNRAS, accepted
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8fe7da2cb86644cc52f59429bfc78e8b http://arxiv.org/abs/astro-ph/0602510 Zobrazit plný text záznamu