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dc.contributor.authorShannon, Ryan
dc.contributor.authorCordes, J.
dc.contributor.authorMetcalfe, T.
dc.contributor.authorLazio, T.
dc.contributor.authorCognard, I.
dc.contributor.authorDesvignes, G.
dc.contributor.authorJanssen, G.
dc.contributor.authorJessner, A.
dc.contributor.authorKramer, M.
dc.contributor.authorLazaridis, K.
dc.contributor.authorPurver, M.
dc.contributor.authorStappers, B.
dc.contributor.authorTheureau, G.
dc.date.accessioned2017-01-30T11:45:47Z
dc.date.available2017-01-30T11:45:47Z
dc.date.created2016-01-11T20:00:25Z
dc.date.issued2013
dc.date.submitted2016-01-12
dc.identifier.citationShannon, R. and Cordes, J. and Metcalfe, T. and Lazio, T. and Cognard, I. and Desvignes, G. and Janssen, G. et al. 2013. An asteroid belt interpretation for the timing variations of the millisecond pulsar b1937+21. Astrophysical Journal. 766 (1): Article ID 5.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/14746
dc.identifier.doi10.1088/0004-637X/766/1/5
dc.description.abstract

Pulsar timing observations have revealed companions to neutron stars that include other neutron stars, white dwarfs, main-sequence stars, and planets. We demonstrate that the correlated and apparently stochastic residual times of arrival from the millisecond pulsar B1937+21 are consistent with the signature of an asteroid belt having a total mass 0.05 M ⊕. Unlike the solar system’s asteroid belt, the best fit pulsar asteroid belt extends over a wide range of radii, consistent with the absence of any shepherding companions. We suggest that any pulsar that has undergone accretion-driven spin-up and subsequently evaporated its companion may harbor orbiting asteroid mass objects. The resulting timing variations may fundamentally limit the timing precision of some of the other millisecond pulsars. Observational tests of the asteroid belt model include identifying periodicities from individual asteroids, which are difficult; testing for statistical stationarity, which becomes possible when observations are conducted over a longer observing span; and searching for reflected radio emission.

dc.titleAn asteroid belt interpretation for the timing variations of the millisecond pulsar b1937+21
dc.typeJournal Article
dcterms.dateSubmitted2016-01-12
dcterms.source.volume766
dcterms.source.number1
dcterms.source.issn0004-637X
dcterms.source.titleAstrophysical Journal
curtin.digitool.pid235868
curtin.pubStatusPublished
curtin.refereedTRUE
curtin.departmentCurtin Institute of Radio Astronomy (Physics)
curtin.identifier.scriptidPUB-VC-ORD-SA-28412
curtin.identifier.elementsidELEMENTS-115134
curtin.accessStatusFulltext not available


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