NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 94 of 1782
Primordial black holes in globular clusters
External Online Source: doi:10.1038/364423a0
Author and Affiliation:
Sigurdsson, Steinn(NASA, Washington, DC, United States)
Hernquist, Lars(California Univ., Santa Cruz, United States)
Abstract: It has recently been recognized that significant numbers of medium-mass back holes (of order 10 solar masses) should form in globular clusters during the early stages of their evolution. Here we explore the dynamical and observational consequences of the presence of such a primordial black-hole population in a globular cluster. The holes initially segregate to the cluster cores, where they form binary and multiple black-hole systems. The subsequent dynamical evolution of the black-hole population ejects most of the holes on a relatively short timescale: a typical cluster will retain between zero and four black holes in its core, and possibly a few black holes in its halo. The presence of binary, triple, and quadruple black-hole systems in cluster cores will disrupt main-sequence and giant stellar binaries; this may account for the observed anomalies in the distribution of binaries in globular clusters. Furthermore, tidal interactions between a multiple black-hole system and a red giant star can remove much of the red giant's stellar envelope, which may explain the puzzling absence of larger red giants in the cores of some very dense clusters.
Publication Date: Jul 29, 1993
Document ID:
19930069242
(Acquired Dec 28, 1995)
Accession Number: 93A53239
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Nature; p. p. 423-425.; (ISSN 0028-0836); 364; 6436
Publisher Information: United Kingdom
Financial Sponsor: NASA; United States
Organization Source: NASA; Washington, DC, United States
Description: 3p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: BINARY STARS; BLACK HOLES (ASTRONOMY); GLOBULAR CLUSTERS; RED GIANT STARS; STELLAR EVOLUTION; MASSIVE STARS; METALLICITY; STELLAR CORES; STELLAR ENVELOPES
Imprint And Other Notes: Nature vol. 364, no. 6436 p. 423-425. July 29, 1993
Miscellaneous Notes: Research supported by Pittsburgh Supercomputer Center, Alfred P. Sloan Foundation, NASA, NSF, et al
Availability Source: Other Sources
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: August 19, 2011
Contact Us