2025ApJ...978L...8M

Query : 2025ApJ...978L...8M

2025ApJ...978L...8M - Astrophys. J., 978, L8 (2025/January-1)

Limiting Rotation Rate of Neutron Stars from Crust Breaking and Gravitational Waves.

MORALES J.A. and HOROWITZ C.J.

Abstract (from CDS):

Neutron stars are not observed to spin faster than about half their breakup rate. This limiting rotational frequency may be related to the strength of their crusts. As a star spins up from accretion, centrifugal forces stress the crust. We perform finite-element simulations of rotating neutron stars and find that the crust fails at rotation rates about half the breakup rate. Given uncertainties in microphysics, we have not determined the crust configuration after this failure. Instead, we argue that the crust may fail in an asymmetric way and could produce a configuration with a significant ellipticity (fractional difference in moments of inertia). If the ellipticity is large, a rotating star will radiate gravitational waves that may limit further spin-up. These stars may be promising sources for LIGO/VIRGO and next-generation gravitational-wave detectors.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Neutron stars - Pulsars - Gravitational wave sources

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* V818 Sco LXB 16 19 55.0692669024 -15 38 25.017666540 11.60 12.40 11.1     Oev 1730 0

Query : 2025ApJ...978L...8M

Basic data :
V* V818 Sco -- Low Mass X-ray Binary
Other object types: otypes_help 		X (2022MNRAS,X,...), * (EPIC,PLX,...), UV (2EUVE,EUVE,...), LXB (2013ApJS), V* (2012A&A,V*,...), SB* (SBC7,SBC9), gam (INTEGRAL1,INTREF), N* (2014MNRAS), N*? (2007ApJS), Ro* (2018AJ), blu (2021A&A), NIR (2MASS)
ICRS coord. (ep=J2000) : 		16 19 55.0692669024 -15 38 25.017666540 (Optical) [ 0.0205 0.0129 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		16 17 04.4828966919 -15 31 14.836367728 [ 0.0205 0.0129 90 ]
Gal coord. (ep=J2000) : 		359.0941818238605 +23.7843946654671 [ 0.0205 0.0129 90 ]
Proper motions mas/yr : 		-7.185 -12.332 [0.027 0.019 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -138.5 [~] / z(~) -0.000462 [~] / cz -138.47 [~]
   E 1995A&AS..114..269D
Parallaxes (mas): 		0.4297 [0.022] A 2020yCat.1350....0G
Spectral type: 		Oev E ~
Fluxes (7) :
U 11.60 [~] D 2007A&A...469..807L
B 12.40 [~] D 2007A&A...469..807L
V 11.1 [~] D 1995GCTP..C......0V
G 12.457144 [0.014054] C 2020yCat.1350....0G
J 11.907 [0.027] C 2003yCat.2246....0C
H 11.547 [0.026] C 2003yCat.2246....0C
K 11.147 [0.023] C 2003yCat.2246....0C
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 7730 Display criteria :

Identifiers (40) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

X Sco XR-1 INTEGRAL1 21 RE J161956-153814 V* V818 Sco
2A 1616-155 INTREF 685 RE J1619-153 WEB 13546
3A 1617-155 KOHX 20 SBC7 569 1XRS 16170-155
EPIC 205703810 1M 1617-155 SBC9 895 XSS J16204-1536
2EUVE J1619-15.6 2MASS J16195506-1538250 SRGA J161954.6-153821 X Sco X-1
EUVE J1619-15.6 2MAXI J1619-155 SWIFT J1620.1-1539 [BM83] X1617-155
GALEX J161955.0-153825 PBC J1619.9-1538 TIC 52901460 [KRL2007b] 184
1H 1617-155 PLX 3702.01 2U 1617-15 AAVSO 1614-15
H 1620-15 2RE J161955-153824 3U 1617-15 Gaia DR3 4328198145165324800
H 1617-155 2RE J1619-153 4U 1617-15 Gaia DR2 4328198145165324800

References (1730 between 1850 and 2026) (Total 1730)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements Description of Measurements

Velocities : 1    Distance : 2    Var : 1    Plx : 3    PM : 2   

   

Observing logs
ISO : 11    IUE : 92    XMM : 7   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* V818 Sco

Link by name to the catalogue in VizieR :

EUVE J1619-15.6 GALEX J161955.0-153825 2MASS J16195506-1538250 2RE J161955-153824 2RE J1619-153
V* V818 Sco Gaia DR3 4328198145165324800 Gaia DR2 4328198145165324800

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