SIMBAD references

2015ApJ...810...67A - Astrophys. J., 810, 67 (2015/September-1)

On the braking index of the unusual high-b rotation-powered pulsar PSR J18460258.

ARCHIBALD R.F., KASPI V.M., BEARDMORE A.P., GEHRELS N. and KENNEA J.A.

Abstract (from CDS):

PSR J1846-0258 is an object that straddles the boundary between magnetars and rotation powered pulsars. Though behaving for many years as a rotation-powered pulsar, in 2006, it exhibited distinctly magnetar-like behavior–emitting several short hard X-ray bursts, and a flux increase. Here we report on 7 years of post-outburst timing observations of PSR J1846-0258 using the Rossi X-ray Timing Explorer and the Swift X-ray Telescope. We measure the braking index over the post-magnetar outburst period to be n = 2.19±0.03. This represents a change of Δn = -0.46±0.03 or a 14.5σ difference from the pre-outburst braking index of n = 2.65±0.01, which itself was measured over a span of 6.5 years. A change to a pulsar braking index so large and long-lived is unprecedented and poses a significant challenge to models of pulsar spin-down.

Abstract Copyright:

Journal keyword(s): pulsars: individual: PSR J1846-0258 - stars: neutron - X-rays: stars

Simbad objects: 8

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2021.03.05-12:35:39

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