Podsiadlowski 2010 黑洞双星导致共同包层的喷流产生

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也就是想说中心是黑洞双星咯。

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Title:		Explosive common-envelope ejection: implications for gamma-ray bursts and low-mass black-hole binaries
Authors:		Podsiadlowski, Philipp; Ivanova, Natasha; Justham, Stephen; Rappaport, Saul
Affiliation:		AA(Department of Astronomy, Oxford University, Oxford OX1 3RH), AB(CITA, University of Toronto, 60 St. George, Toronto, ON M5S 3H8, Canada; Department of Physics, University of Alberta, Edmonton, AB T6G 2G7, Canada), AC(Department of Astronomy, Oxford University, Oxford OX1 3RH; Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, China), AD(Department of Physics and Kavli Institute for Astrophysical Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA)
Publication:		Monthly Notices of the Royal Astronomical Society, Volume 406, Issue 2, pp. 840-847. (MNRAS Homepage)
Publication Date:		08/2010
Origin:		WILEY
MNRAS Keywords:		binaries: general, gamma-ray burst: general, stars: individual: X-ray Nova Sco, X-rays: binaries, X-rays: stars
Abstract Copyright:		(c) Journal compilation © 2010 RAS
DOI:		10.1111/j.1365-2966.2010.16751.x
Bibliographic Code:		2010MNRAS.406..840P

Abstract

ABSTRACT We present a new mechanism for the ejection of a common envelope in a massive binary, where the energy source is nuclear energy rather than orbital energy. This can occur during the slow merger of a massive primary with a secondary of 1-3 M_solar when the primary has already completed helium core burning. We show that in the final merging phase, hydrogen-rich material from the secondary can be injected into the helium-burning shell of the primary. This leads to a nuclear runaway and the explosive ejection of both the hydrogen and the helium layers, producing a close binary containing a CO star and a low-mass companion. We argue that this presents a viable scenario to produce short-period black-hole binaries and long-duration gamma-ray bursts (LGRBs). We estimate an LGRB rate of ~ 10^-6yr^-1 at solar metallicity, which implies that this may account for a significant fraction of all LGRBs and that this rate should be higher at lower metallicity.

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