Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.12386/27768
Title: | Peculiar spin frequency and radio profile evolution of PSR J1119-6127 following magnetar-like X-ray bursts | Authors: | Dai, S. Johnston, S. Weltevrede, P. Kerr, M. BURGAY, MARTA Esposito, P. ISRAEL, Gian Luca POSSENTI, ANDREA Rea, N. Sarkissian, J. |
Issue Date: | 2018 | Journal: | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | Number: | 480 | Issue: | 3 | First Page: | 3584 | Abstract: | 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 ∆ν ≈ -4 × 10<SUP>-4</SUP> Hz. During the transition, a net spin-down rate increase of ∆ \dot{ν }≈ -1× 10^{-10} Hz s<SUP>-1</SUP> 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. | URI: | http://hdl.handle.net/20.500.12386/27768 | URL: | https://academic.oup.com/mnras/article-abstract/480/3/3584/5063582 | ISSN: | 0035-8711 | DOI: | 10.1093/mnras/sty2063 | Bibcode ADS: | 2018MNRAS.480.3584D | Fulltext: | open |
Appears in Collections: | 1.01 Articoli in rivista |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Dai2018.pdf | Pdf editoriale | 739.72 kB | Adobe PDF | View/Open |
Page view(s)
61
checked on Sep 11, 2024
Download(s)
23
checked on Sep 11, 2024
Google ScholarTM
Check
Altmetric
Altmetric
Items in DSpace are published in Open Access, unless otherwise indicated.