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The Spin Rate of Pre-collapse Stellar Cores: Wave-driven Angular Momentum Transport in Massive Stars

Fuller, Jim and Cantiello, Matteo and Lecoanet, Daniel and Quataert, Eliot (2015) The Spin Rate of Pre-collapse Stellar Cores: Wave-driven Angular Momentum Transport in Massive Stars. Astrophysical Journal, 810 (2). Art. No. 101. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20151027-092903522

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Abstract

The core rotation rates of massive stars have a substantial impact on the nature of core-collapse (CC) supernovae and their compact remnants. We demonstrate that internal gravity waves (IGWs), excited via envelope convection during a red supergiant phase or during vigorous late time burning phases, can have a significant impact on the rotation rate of the pre-SN core. In typical (10 M⊙ ≾ M ≾ 20 M⊙) supernova progenitors, IGWs may substantially spin down the core, leading to iron core rotation periods P_(min,Fe) ≳ 30 s. Angular momentum (AM) conservation during the supernova would entail minimum NS rotation periods of P_(min,NS) ≳ 3 ms. In most cases, the combined effects of magnetic torques and IGW AM transport likely lead to substantially longer rotation periods. However, the stochastic influx of AM delivered by IGWs during shell burning phases inevitably spin up a slowly rotating stellar core, leading to a maximum possible core rotation period. We estimate maximum iron core rotation periods of P_(max,Fe) ≾ 5 x 10^3 s in typical CC supernova progenitors, and a corresponding spin period of P_(max,NS) ≾ 500 ms for newborn neutron stars (NSs). This is comparable to the typical birth spin periods of most radio pulsars. Stochastic spin-up via IGWs during shell O/Si burning may thus determine the initial rotation rate of most NSs. For a given progenitor, this theory predicts a Maxwellian distribution in pre-collapse core rotation frequency that is uncorrelated with the spin of the overlying envelope.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-637X/810/2/101DOIArticle
http://iopscience.iop.org/article/10.1088/0004-637X/810/2/101/metaPublisherArticle
http://arxiv.org/abs/1502.07779arXivDiscussion Paper
http://dx.doi.org/10.1088/0004-637X/815/2/137ErrataErratum
http://iopscience.iop.org/article/10.1088/0004-637X/815/2/137ErrataErratum
ORCID:
AuthorORCID
Fuller, Jim0000-0002-4544-0750
Cantiello, Matteo0000-0002-8171-8596
Quataert, Eliot0000-0001-9185-5044
Additional Information:© 2015 The American Astronomical Society. Received 2015 February 24; accepted 2015 July 22; published 2015 September 3. This paper was written collaboratively, on the web, using https://www.authorea.com. We thank Dave Arnett, Sean Couch, and Christian Ott for useful discussions. JF acknowledges partial support from NSF under grant no. AST-1205732 and through a Lee DuBridge Fellowship at Caltech. D.L. is supported by a Hertz Foundation Fellowship and the National Science Foundation Graduate Research Fellowship under Grant No. DGE 1106400. E.Q. was supported in part by a Simons Investigator award from the Simons Foundation and the David and Lucile Packard Foundation. This research was supported by the National Science Foundation under grant No. NSF PHY11-25915 and by NASA under TCAN grant No. NNX14AB53G.
Errata:ERRATUM: "THE SPIN RATE OF PRE-COLLAPSE STELLAR CORES: WAVE-DRIVEN ANGULAR MOMENTUM TRANSPORT IN MASSIVE STARS" (2015, ApJ, 810, 101) Jim Fuller et al 2015 ApJ 815 137
Group:TAPIR, Walter Burke Institute for Theoretical Physics
Funders:
Funding AgencyGrant Number
NSFAST-1205732
Lee A. DuBridge FoundationUNSPECIFIED
Fannie and John Hertz FoundationUNSPECIFIED
NSF Graduate Research FellowshipDGE 1106400
Simons FoundationUNSPECIFIED
David and Lucile Packard FoundationUNSPECIFIED
NSFPHY11-25915
NASANNX14AB53G
Subject Keywords:stars: interiors – stars: massive – stars: neutron – stars: oscillations (including pulsations) – stars: rotation – waves
Issue or Number:2
Record Number:CaltechAUTHORS:20151027-092903522
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20151027-092903522
Official Citation:Jim Fuller et al 2015 ApJ 810 101
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:61541
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Oct 2015 16:40
Last Modified:09 Mar 2020 13:18

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