Where Are the Be/Black Hole Binaries? | Zendy

Fan Zhang | Zendy; X.D. Li | Zendy; Wang Zhen-ru | Zendy

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Where Are the Be/Black Hole Binaries?

Author(s) -

Fan Zhang,

X.D. Li,

Wang Zhen-ru

Publication year - 2004

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/381540

Subject(s) - black hole (networking) , astrophysics , truncation (statistics) , physics , okazaki fragments , stars , binary number , binary black hole , population , rappaport , binary star , transient (computer programming) , astronomy , computer science , mathematics , statistics , gravitational wave , arithmetic , sociology , routing (electronic design automation) , dna repair , computer network , routing protocol , chemistry , biochemistry , demography , eukaryotic dna replication , gene , link state routing protocol , philosophy , theology , operating system

We apply the tidal truncation model proposed by Negueruela & Okazaki(2001) toarbitrary Be/compact star binaries to study the truncation efficiencydependance on the binary parameters. We find that the viscous decretion disksaround the Be stars could be truncated very effectively in narrow systems.Combining this with the population synthesis results of Podsiadlowski,Rappaport and Han (2003) that binary black holes are most likely to be born insystems with orbital periods less than about 30 days, we suggest that most ofthe Be/black-hole binaries may be transient systems with very long quiescentstates. This could explain the lack of observed Be/black-hole X-ray binaries.We also discuss the evolution of the Be/black-hole binaries and their possibleobservational features.Comment: 14 pages,3 figures, ApJ accepte

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