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We investigate the relevance of the gravitational-wave driven r-mode instability for strange stars. We find that the unstable r-modes affect strange stars in a way that is quite distinct from the neutron star case. For accreting strange…

Astrophysics · Physics 2010-11-19 N. Andersson , D. I. Jones , K. D. Kokkotas

The thermal evolution of strange stars in both normal and color-flavor-locked (CFL) phases are investigated together with the evolutions of the stellar rotation and the r-mode instability. The heating effects due to the deconfinement…

Solar and Stellar Astrophysics · Physics 2013-04-18 Quan Cheng , Yun-Wei Yu , Xiao-Ping Zheng

With the constraint from gravitational wave emission of a binary merger system (GW170817) and two-solar-mass pulsar observations, we investigate the r-mode instability windows of strange stars with unpaired and color-flavor-locked phase…

High Energy Astrophysical Phenomena · Physics 2019-02-20 Yu-Bin Wang , Xia Zhou , Na Wang , Xiong-Wei Liu

We model the nonlinear saturation of the r-mode instability via three-mode couplings and the effects of the instability on the spin evolution of young neutron stars. We include one mode triplet consisting of the r-mode and two near resonant…

Astrophysics · Physics 2009-10-29 Ruxandra Bondarescu , Saul A. Teukolsky , Ira Wasserman

The r-mode instability, believed to limit the rotation speed of compact stars, can provide empirical confirmation for the existence of stable deconfined phases of quark matter that are predicted by weak coupling calculations in Quantum…

Nuclear Theory · Physics 2015-06-11 Gautam Rupak , Prashanth Jaikumar

Studying the frequency and temperature evolution of a compact star can give us valuable information about the microscopic properties of the matter inside the star. In this paper we study the effect of dissipative reheating of a neutron star…

High Energy Astrophysical Phenomena · Physics 2015-06-11 Mark G. Alford , Simin Mahmoodifar , Kai Schwenzer

Recently Andersson et. al., and Bildsten have independently suggested that an r-mode instability might be responsible for stalling the neutron-star spin-up in strongly accreting, Low Mass X-ray Binaries (LMXBs). We show that if this does…

Astrophysics · Physics 2009-10-31 Yuri Levin

We have investigated an influence of the r-mode instability on hypercritically accreting ($\dot{M}\sim 1M_\odot {y}^{-1}$) neutron stars in close binary systems during their common envelope phases based on the scenario proposed by Bethe et…

Astrophysics · Physics 2010-11-19 Shin'ichirou Yoshida , Yoshiharu Eriguchi

R-mode instabilities in rapidly rotating quark matter stars (strange stars) lead to specific signatures in the evolution of pulsars with periods below 2.5 msec, and may explain the apparent lack of very rapid pulsars. Existing data seem…

Astrophysics · Physics 2009-10-31 Jes Madsen

We study the spindown of isolated neutron stars from initially rapid rotation rates, driven by two factors: (i) gravitational wave emission due to r-modes and (ii) magnetic braking. In the context of isolated neutron stars, we present the…

Solar and Stellar Astrophysics · Physics 2015-05-28 Jan Staff , Prashanth Jaikumar , Vincent Chan , Rachid Ouyed

The gravitational-wave instability of r-modes in rapidly rotating compact stars is believed to spin them down to angular frequencies of about a tenth of the Kepler frequency soon after their birth in a Supernova. We point out that the…

High Energy Astrophysical Phenomena · Physics 2010-12-23 Prashanth Jaikumar , Stou Sandalski

Under the combination effect of the recommencement heating due to spin-down of strange stars and the heat perseveration due to weak conduct heat of the crust, the Cooper pair breaking and formation(PBF) in color superconduction quark matter…

Astrophysics · Physics 2009-11-11 X. P. Zheng , X. Zhou , Y. W. Yu

In a second-order r-mode theory, S'a & Tom'e found that the r-mode oscillation in neutron stars (NSs) could induce stellar differential rotation, which leads to a saturation state of the oscillation spontaneously. Based on a consideration…

Solar and Stellar Astrophysics · Physics 2009-09-28 Yun-Wei Yu , Xiao-Feng Cao , Xiao-Ping Zheng

We investigated the thermal evolution of rotating strange stars with the deconfinement heating due to magnetic braking. We consider the stars consisting of either normal quark matter or color-flavor-locked phase. Combining deconfinement…

Astrophysics · Physics 2008-01-17 Zhou Xia , Wang Lingzhi , Zhou Aizhi

R-mode oscillations have been identified as viable and promising targets for continuous gravitational wave searches, meanwhile, it would allow us to probe the interior of compact stars directly. As well as emitting gravitational wave,…

High Energy Astrophysical Phenomena · Physics 2019-09-04 Cui Zhu , Yu-bin Wang , Xia Zhou

The loss of angular momentum due to unstable r-modes in hot young neutron stars has been proposed as a mechanism for achieving the spin rates inferred for young pulsars. One factor that could have a significant effect on the action of the…

Astrophysics · Physics 2009-11-07 Anna. L. Watts , Nils. Andersson

We present a simple spin evolution model that predicts that rapidly rotating accreting neutron stars will mainly be confined to a narrow range of spin-frequencies; P= 1.5-5 ms. This is in agreement with current observations of both neutron…

Astrophysics · Physics 2009-10-31 N. Andersson , D. I. Jones , K. D. Kokkotas , N. Stergioulas

Several recent surprises appear dramatically to have improved the likelihood that the spin of rapidly rotating, newly formed neutron stars (and, possibly, of old stars spun up by accretion) is limited by a nonaxisymmetric instability driven…

General Relativity and Quantum Cosmology · Physics 2017-08-23 John L. Friedman , Keith H. Lockitch

The presence of the color-flavor locked (CFL) phase strongly suppresses the neutrino emission processes and the quark specific heat. As a result the cooling of the strange stars in the CFL phase is dominated by deconfinement heating and…

Astrophysics · Physics 2009-11-10 Yu Yunwei , Zheng Xiaoping Yu Yunwei , Zheng Xiaoping

Three topics with relation to color superconductivity in strange quark matter are discussed. 1) The r-mode instability in strange stars, which is consistent with the existence of ``ordinary'' strange quark matter stars but inconsistent with…

High Energy Physics - Phenomenology · Physics 2007-05-23 Jes Madsen
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