The `Periodic Nulls' of Radio Pulsar J1819+1305 Export

@misc{citeulike:2335125, abstract = {We present a single-pulse study of the four-component pulsar J1819+1305, whose ``null'' pulses bunch at periodic intervals of around 57 times the rotation period. The emission bursts between the null bunches exhibit characteristic modulations at two shorter periodicities of approximately 6.2 and 3 times the rotation period, the former found largely in the two outer components, and the latter only in the first component. Many bursts commence with bright emission in second component, exhibit positive six-period drift across the full profile width, and end with 3-period modulation in the leading component. The 57-period cycle can be modelled geometrically as a sparsely filled subbeam carousel with nulls appearing whenever our line of sight intersects a circulating empty region. This interpretation is compatible with other recent evidence for periodic, carousel-related nulling and appears to support the physics of a polar-gap emission model for ``drifting'' subpulses, but the subtle structure of the emission bursts defies an easy explanation.}, archivePrefix = {arXiv}, author = {Rankin, Joanna M. and Wright, Geoffrey A. E.}, citeulike-article-id = {2335125}, citeulike-linkout-0 = {http://arxiv.org/abs/0802.0247}, citeulike-linkout-1 = {http://arxiv.org/pdf/0802.0247}, day = {2}, eprint = {0802.0247}, keywords = {carousel, driftingsubpulses, nulling, pulsar}, month = {Feb}, posted-at = {2008-02-05 14:19:38}, priority = {2}, title = {The `Periodic Nulls' of Radio Pulsar J1819+1305}, url = {http://arxiv.org/abs/0802.0247}, year = {2008} }

TY - ELEC ID - citeulike:2335125 L3 - citeulike-article-id:2335125 N2 - We present a single-pulse study of the four-component pulsar J1819+1305, whose ``null'' pulses bunch at periodic intervals of around 57 times the rotation period. The emission bursts between the null bunches exhibit characteristic modulations at two shorter periodicities of approximately 6.2 and 3 times the rotation period, the former found largely in the two outer components, and the latter only in the first component. Many bursts commence with bright emission in second component, exhibit positive six-period drift across the full profile width, and end with 3-period modulation in the leading component. The 57-period cycle can be modelled geometrically as a sparsely filled subbeam carousel with nulls appearing whenever our line of sight intersects a circulating empty region. This interpretation is compatible with other recent evidence for periodic, carousel-related nulling and appears to support the physics of a polar-gap emission model for ``drifting'' subpulses, but the subtle structure of the emission bursts defies an easy explanation. TI - The `Periodic Nulls' of Radio Pulsar J1819+1305 KW - carousel KW - driftingsubpulses KW - nulling KW - pulsar AU - Rankin, Joanna AU - Wright, Geoffrey PY - 2008/Feb/02/ UR - http://arxiv.org/abs/0802.0247 ER -