Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...2e..26k&link_type=abstract
On the Present and Future of Pulsar Astronomy, 26th meeting of the IAU, Joint Discussion 2, 16-17 August, 2006, Prague, Czech Re
Astronomy and Astrophysics
Astronomy
Scientific paper
We analyze the possibility of realization of the scenario, according to which Anomalous X-ray Pulsars (AXPs) and Soft Gamma-ray repeaters (SGRs) originate from the radio pulsars with the very close initial parameters (period, magnetic field etc.) subjected to considerable and prolonged glitches. This scenario provides both an increase in the period of ordinary pulsars and the attainment of magnetic field strengths typical of these objects (B ~ 10^13 - 10^14 G), a new class of neutron stars, called magnetars, at an insignificant initial magnetic field value B ≈ 3 10^10 -10^11 G. With this aim, the criteria to which the potential progenitors of AXPs and SGRs must be satisfied were determined and analyzed. So, taking into account the combined action of all factors (magnetic field, distance, birth place, satisfying to our criteria etc.) we restricted our analysis to ~100 pulsars with B > 5 10^12 G and P > 0.5 s. The observed characteristics of such pulsars, their association with supernova remnants, and their evolution in the P- P/dot diagram with allowance made for the actual age of the possible AXP and SGR progenitors are shown to being in conflict with the suggested scenario and can be better described in the framework of the standard magneto-dipole model of pulsar evolution.
Allakhverdiev A.
Asvarov Abdul
Kasumov F.
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