The influence of rotation deceleration on the shape of a pulsar may reflect on the star's braking index

The influence of rotation deceleration on the shape of a pulsar may reflect on the star's braking index

Pulsars are stars whose electromagnetic radiation is observed to pulsate in well‐defined time intervals while they rotate as long as the electromagnetic signal is not emitted in the direction of the rotation axis. The frequencies of the pulses decay with time as quantified by the braking index (n)....

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Veröffentlicht in:Astronomische Nachrichten 2021-01, Vol.342 (1-2), p.222-226
Hauptverfasser: Frajuca, Carlos, Silva Bortoli, Fabio, Magalhaes, Nadja S.
Format: Artikel
Sprache:eng
Schlagworte:
Braking
braking index
Centrifugal force
Deceleration
Electromagnetic radiation
Energy dissipation
Inertia
Moments of inertia
neutron star
Neutron stars
Pulsars
star deformation
Stellar rotation
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Beschreibung
Zusammenfassung:Pulsars are stars whose electromagnetic radiation is observed to pulsate in well‐defined time intervals while they rotate as long as the electromagnetic signal is not emitted in the direction of the rotation axis. The frequencies of the pulses decay with time as quantified by the braking index (n). In the canonical model, n = 3 for all pulsars, but observational data yield n 
ISSN:0004-6337
1521-3994
DOI:10.1002/asna.202113908