Statistical Study of Neutron Star Glitches
Eya,
Innocent Okwudili,
Urama,
Johnson O.
Issue:
Volume 2, Issue 2, April 2014
Pages:
16-21
Received:
11 April 2014
Accepted:
4 May 2014
Published:
20 May 2014
Abstract: Neutron star glitches; spanning a period of 42 years of pulsar timing were studied. These glitches are from Radio, X-ray, Anomalous X-ray and Milliseconds Pulsars. Radio Pulsars dominates the glitch events, contributing 87% of the glitches. Pulsars of characteristic age bracket 103 to 105 yrs dominated the glitch events, at a rate of 5.2 glitches per year per pulsar. Pulsar of the above age bracket exhibits large size glitches compared to others. A large frequency spin-up (△v) is generally associated with large frequency derivative jump (△v ̇). The distribution of the glitch magnitude (△v/v) is bimodal reaffirming dual glitch mechanism, but that of spin-up (△v) is tending towards multi-modal. Moreover, glitches in Vela pulsar and PSR J0537-6910 showed strong elasticity of the objects, suggesting that the interiors of these objects are in thermal equilibrium. Glitches from PSR J1740-3015 and PSR J1341-6220 appeared to occur in groups, suggesting that their interior fluid is switching between two phases. We discussed the glitch activity of young pulsars in terms of vortex creep model.
Abstract: Neutron star glitches; spanning a period of 42 years of pulsar timing were studied. These glitches are from Radio, X-ray, Anomalous X-ray and Milliseconds Pulsars. Radio Pulsars dominates the glitch events, contributing 87% of the glitches. Pulsars of characteristic age bracket 103 to 105 yrs dominated the glitch events, at a rate of 5.2 glitches p...
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Dynamical Essence of the Basic Relations of the Special Theory of Relativity and the Origin of Fundamental Interactions: Phenomenology
Issue:
Volume 2, Issue 2, April 2014
Pages:
22-32
Received:
30 May 2014
Accepted:
20 June 2014
Published:
30 June 2014
Abstract: It is shown that the adoption of the hypothesis that the electromagnetic component of physical vacuum, the vacuum of quantum electrodynamics (QED vacuum), undergoes polarization in the vicinity of elementary particles allows us to comprehend, on the phenomenological level, the physical essence of the basic hypotheses of the special theory of relativity, including the nature of the limitation of the velocity of material objects to the velocity of light in vacuum. The QED vacuum here plays the part of the base medium that governs the development of the fundamental strong and gravitational interactions.
Abstract: It is shown that the adoption of the hypothesis that the electromagnetic component of physical vacuum, the vacuum of quantum electrodynamics (QED vacuum), undergoes polarization in the vicinity of elementary particles allows us to comprehend, on the phenomenological level, the physical essence of the basic hypotheses of the special theory of relati...
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