Computer Science
Scientific paper
Aug 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jena.confq..99s&link_type=abstract
"JENAM-2007, "Our non-stable Universe", held 20-25 August 2007 in Yerevan, Armenia. Abstract book, p. 99-99"
Computer Science
Scientific paper
It is known that millisecond pulsars have a large value of the quadruple moment of mass of the order of 10^42g.cm2 and the frequency of self-oscillations of the order of 103-7•103Hz. Therefore, the oscillating pulsar will become a powerful source of gravitational waves in the frequency range 1-7 kHz. If we suppose that neutrons in the inner crust (Aen-phase) of the neutron star are superfluid, one can show that the secular slow-down of the angular velocity of the normal part of the star is accompanied by glitches. This phenomenon is the evidence of discontinuous angular momentum transfer to the neutron star crust from a differentially rotating superfluid layers. Glitches will trigger starquakes, which will excite self-oscillations of the neutron star driving the gravitational radiation. It is shown that energy-output in the form of gravitational waves can explain the observed spin-down of millisecond pulsars. Let us note, that usually spin-down of these pulsars explained by magneto-dipole radiation of pulsar with oblique magnetic field of the order of B ~ 109Gs. So we can conclude that the millisecond pulsars' gravitational radiation can be regarded as alternative explanation of their spin-down.
Hayrapetyan Mekhak V.
Sedrakian David M.
Sedrakian Lilit R.
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