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Record Details

Record 67 of 1122
Durability of the accretion disk of millisecond pulsars
Author and Affiliation:
Michel, F. C.(Rice University, Houston, TX, United States)
Dessler, A. J.(NASA Marshall Space Flight Center, Space Science Laboratory, Huntsville, AL, United States)
Abstract: Pulsars with pulsation periods in the millisecond range are thought to be neutron stars that have acquired an extraordinarily short spin period through the accretion of stellar material spiraling down onto the neutron star from a nearby companion. Nearly all the angular momentum and most of the mass of the companion star is transferred to the neutron star. During this process, wherein the neutron star consumes its companion, it is required that a disk of stellar material be formed around the neutron star. In conventional models it is supposed that the disk is somehow lost when the accretion phase is finished, so that only the rapidly spinning neutron star remains. However, it is possible that, after the accretion phase, a residual disk remains in stable orbit around the neutron star. The end result of such an accretion process is an object that looks much like a miniature (about 100 kilometers), heavy version of Saturn: a central object (the neutron star) surrounded by a durable disk.
Publication Date: May 24, 1985
Document ID:
19850052722
(Acquired Nov 28, 1995)
Accession Number: 85A34873
Subject Category: ASTROPHYSICS
Document Type: Journal Article
Publication Information: Science; p. 1015; (ISSN 0036-8075); 228
Publisher Information: United States
Financial Sponsor: NASA; United States
Organization Source: Rice Univ.; Houston, TX, United States
NASA Marshall Space Flight Center; Huntsville, AL, United States
Description: 2p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ACCRETION DISKS; NEUTRON STARS; PULSARS; STELLAR MASS ACCRETION; COMPANION STARS; STELLAR MASS EJECTION
Imprint And Other Notes: Science (ISSN 0036-8075), vol. 228, May 24, 1985, p. 1015, 1016.
Miscellaneous Notes: 1016
Availability Source: Other Sources
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