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Consecutive bright pulses in the vela pulsar


Palfreyman, JL and Hotan, AW and Dickey, JM and Young, TG and Hotan, CE, Consecutive bright pulses in the vela pulsar, The Astrophysical Journal Letters, 735, (1) Article L17. ISSN 2041-8205 (2011) [Refereed Article]

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Copyright 2011 The American Astronomical Society

DOI: doi:10.1088/2041-8205/735/1/L17


We report on the discovery of consecutive bright radio pulses from the Vela pulsar, a new phenomenon that may lead to a greater understanding of the pulsar emission mechanism. This results from a total of 345 hr worth of observations of the Vela pulsar using the University of Tasmania's 26 m radio telescope to study the frequency and statistics of abnormally bright pulses and sub-pulses. The bright pulses show a tendency to appear consecutively. The observations found two groups of six consecutive bright pulses and many groups of two to five bright pulses in a row. The strong radio emission process that produces the six bright pulses lasts between 0.4 and 0.6 s. The numbers of bright pulses in sequence far exceed what would be expected if individual bright pulses were independent random events. Consecutive bright pulses must be generated by an emission process that is long lived relative to the rotation period of the neutron star.

Item Details

Item Type:Refereed Article
Keywords:pulsars: general; pulsars: individual (PSR J0835-4510); radiation mechanisms: non-thermal
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Palfreyman, JL (Dr Jim Palfreyman)
UTAS Author:Dickey, JM (Professor John Dickey)
UTAS Author:Hotan, CE (Mrs Claire Hotan)
ID Code:75067
Year Published:2011
Web of Science® Times Cited:5
Deposited By:Mathematics and Physics
Deposited On:2012-01-06
Last Modified:2017-11-03

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