Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26at...23..145a&link_type=abstract
Astronomical and Astrophysical Transactions, vol. 23, Issue 2, p.145-152
Astronomy and Astrophysics
Astrophysics
Scientific paper
The evolution of single galactic field pulsars on a P-˙P diagram is considered. An unavoidable increase in the mean value of braking indices n averaged over many years, for pulsars with characteristic times τ in the range 4.5 < log τ < 5.5, of up to 5 and more is shown. Some candidates for such pulsars are suggested. The increase in deviation between the real lifetimes t, of pulsars and their characteristic times τ, with increase in τ, is explained. The important result of this work is that the origin of single pulsars with a relatively low magnetic field B < 3 × 1011 G and with τ > 107 years is established. The problem is solved by assuming that the birth of pulsars can be happen at the mentioned values, too. Such births occur, probably, as a result of disruption of binary systems after the second supernova explosion in high-mass X-ray binary systems. In these binaries, mass accretion on the surface of X-ray pulsars leads to a decrease in the magnetic field from its initial value B ≈ 1012-1013 G to B < 3 × 1011 G .
Allakhverdiev A. O.
Guseinov Oktay H.
Tagiyeva S. O.
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