C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST11:13:56

2019MNRAS.484.1983H - Mon. Not. R. Astron. Soc., 484, 1983-1987 (2019/April-1)

Braking index jumps in young pulsars.


Abstract (from CDS):

The departure of all measured pulsar braking indexes from the 'canonical' dipole value 3 has been attributed to several causes in the past. Careful monitoring of the Crab pulsar has revealed permanent changes in the spin-down rate that are most likely the accumulation of small jumps in the angle α between the magnetic and spin axis. Recently, a large permanent change in the braking index of the in the 'Crab twin' pulsar B0540-69 has been reported, and an analogous phenomenon seen in the high-field pulsar PSR 1846-0258 has been seen following a glitch, while another similar event (in PSR J119-6127) needs to be confirmed. We argue in this work that a common physical origin of all these observations can be attributed to the counter-alignment of the axis without serious violations of the observed features and with very modest inferred values of the hypothesized jump in the α angle. In addition, detected increases of the X-ray luminosities after the events are an additional ingredient for this interpretation. We argue that a component of a time-dependent torque has been identified, being an important ingredient towards a full solution of observed pulsar timing behaviour which is in search of a consistent modelling.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): pulsars: general

Simbad objects: 5

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Number of rows : 5

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
1 V* CM Tau Psr 05 34 31.93830 +22 00 52.1758           ~ 4881 1
2 PSR B0540-69 Psr 05 40 10.84 -69 19 54.2           ~ 811 3
3 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2105 1
4 PSR J1119-6127 Psr 11 19 14.30 -61 27 49.5           ~ 349 1
5 PSR J1846-0258 Psr 18 46 24.94 -02 58 30.1           ~ 310 2

    Equat.    Gal    SGal    Ecl

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