English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In this article we revise the problem of anomalous values of p ulsar’ braking indices and frequency second derivatives arising in observations. The intrinsic evolutionary braking is buried deep under the superimposed non-evolutionary processes, that preven t to stimate directly its parameters for the majority of pulsars. We re-analyze the distribution of “ rdinary” radio pulsars on ä ν − ν̇ and nobs − τch diagrams assuming their spin-down to be a superposition of a “true” monotonous and a symmetric oscillational terms. We demonstrated that thei r influences may be clearly separated using simple ad-hoc arguments. Using maximum likelihood es timator we derived the parameters of both components and found the pulsar’ peculiar evolution to be consistent with classical magnetodipolar law with braking index n ≈ 3, while the oscillations are large enough to significantly vary the observed spin-down rate and completely dominate th e second frequency derivatives. So, observed pulsar’ characteristic ages (and similar estimat ors that dependend on the observed ν̇) are biased up to 0.5...5 times. This naturally resolves the disc repancy of characteristic and independently estimated physical ages of several objects, as well a s explain very large, up to 10 8 years, characteristic ages of some pulsars. We suggest these oscillations to be connected with the longterm precession of NS around its magnetic axis, probably under the influence of anomalous bra king torque.

Monotonous and thousands-of-years cyclic components of isolated radio pulsars spindown.