SIMBAD references

2018MNRAS.480.3584D - Mon. Not. R. Astron. Soc., 480, 3584-3594 (2018/November-1)

Peculiar spin frequency and radio profile evolution of PSR J1119-6127 following magnetar-like X-ray bursts.

DAI S., JOHNSTON S., WELTEVREDE P., KERR M., BURGAY M., ESPOSITO P., ISRAEL G., POSSENTI A., REA N. and SARKISSIAN J.

Abstract (from CDS):

We present the spin frequency and profile evolution of the radio pulsar J1119 - 6127 following magnetar-like X-ray bursts from the system in 2016 July. Using data from the Parkes radio telescope, we observe a smooth and fast spin-down process subsequent to the X-ray bursts resulting in a net change in the pulsar rotational frequency of Δν ≃ -4 x 10–4 Hz. During the transition, a net spin-down rate increase of Δ{dot}ν~-1×10–10 Hz s–1 is observed, followed by a return of {dot}ν to its original value. In addition, the radio pulsations disappeared after the X-ray bursts and reappeared about two weeks later with the flux density at 1.4 GHz increased by a factor of 5. The flux density then decreased and undershot the normal flux density followed by a slow recovery back to normal. The pulsar's integrated profile underwent dramatic and short-term changes in total intensity, polarization, and position angle. Despite the complex evolution, we observe correlations between the spin-down rate, pulse profile shape, and radio flux density. Strong single pulses have been detected after the X-ray bursts with their energy distributions evolving with time. The peculiar but smooth spin frequency evolution of PSR J1119-6127 accompanied by systematic pulse profile and flux density changes are most likely to be a result of either reconfiguration of the surface magnetic fields or particle winds triggered by the X-ray bursts. The recovery of spin-down rate and pulse profile to normal provides us the best case to study the connection between high magnetic-field pulsars and magnetars.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): pulsars: general - stars: magnetars - pulsars: individual: PSR J1119-6127

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 9

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2021.06.21-22:45:58

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