74 research outputs found
Do Young Neutron Stars Which Show Themselves As AXPs, SGRs and Radio Pulsars Accrete?
We examined the fall-back disk models, and in general accretion, proposed to
explain the properties of anomalous X-ray pulsars (AXPs), soft gamma repeaters
(SGRs), and radio pulsars (PSRs). We checked the possibility of some gas
remaining around the neutron star after the supernova explosion. We also
compared AXPs and SGRs with the X-ray pulsars in X-ray binaries. We conclude
the existing models of accretion from a fall-back disk are insufficient to
explain the nature of AXPs/SGRs, particularly the SGR bursts. We also discussed
the proposed model of combination of magnetic dipole radiation and propeller
torques in order to explain the evolution of radio pulsars on the P-\.{P}
diagram. The predictions of this model contradict the observational data.Comment: 16 Pages, 1 Figur
PRINCIPLES OF SOCIAL SOLIDARITY IN SOCIETY
The problem of social solidarity, studying the social-economical position, compassion of care and gayety of society‘s life are studied in this article, and the investigations of foreign scientists on the themes of freedom of person and solidarity as well
On Period and Burst Histories of AXPs and SGRs and the Possible Evolution of these Objects on the P-Pdot Diagram
In this paper, timing data for all of the anomalous X-ray pulsars and soft
gamma repeaters are compiled. Timing properties of these objects are
investigated. The effect of bursts of soft gamma repeaters on their period
history is investigated. The P-Pdot diagram for pulsars, X-ray binaries,
anomalous X-ray pulsars, soft gamma repeaters and dim radio quiet netron stars
is constructed. The possible evolutionary tracks for anomalous X-ray pulsars,
soft gamma repeaters and dim radio quiet netron stars are examined.Comment: 66 pages, 9 figures, submitted to Turkish Journal of Physic
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