(1) TÜBİTAK Feza Gürsey Institute, Çengelköy İstanbul, Turkey;(2) Department of Physics, Akdeniz University, Antalya, Turkey;(3) Academy of Science, Physics Institute, Baku, Azerbaijan Republic
Abstract:
Influences of the mass, moment of inertia, rotation, absence of stability in the atmosphere and some other parameters of neutron stars on the evolution of pulsars are examined. It is shown that the locations and evolutions of soft gamma repeaters, anomalous X-ray pulsars and other types of pulsar on the period versus period derivative diagram can be explained adopting values of B < 1014 G for these objects if they have smaller mass (e.g. about 0.5 Solar mass) compared to the conventionally adopted values of mass. This approach gives the possibility to explain many properties of different types of pulsar.