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dc.contributorFinnish Centre for Astronomy with ESO (FINCA), Quantum, University of Turku, FI-20014, Turku, Finland
dc.contributorArmagh Observatory and Planetarium, College Hill, Armagh, Northern Ireland, BT61 9DG, UK
dc.contributorSouth African Astronomical Observatory, PO Box 9, Observatory, 7935 Cape Town, South Africa
dc.contributorDepartment of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK
dc.contributor.authorHakala, Pasi
dc.contributor.authorRamsay, Gavin
dc.contributor.authorPotter, Stephen B.
dc.contributor.authorBeardmore, Andrew
dc.contributor.authorBuckley, David A. H.
dc.contributor.authorWynn, Graham
dc.date.accessioned2024-02-21T11:03:16Z
dc.date.available2024-02-21T11:03:16Z
dc.date.issued2019-06-01T00:00:00Z
dc.identifier.doi10.1093/mnras/stz992
dc.identifier.doi10.48550/arXiv.1904.02949
dc.identifier.other2019MNRAS.tmp..979H
dc.identifier.other2019arXiv190402949H
dc.identifier.otherastro-ph.SR
dc.identifier.otherastro-ph.HE
dc.identifier.other2019MNRAS.486.2549H
dc.identifier.other2019MNRAS.tmp..979H
dc.identifier.other2019arXiv190402949H
dc.identifier.other10.1093/mnras/stz992
dc.identifier.otherarXiv:1904.02949
dc.identifier.other10.48550/arXiv.1904.02949
dc.identifier.other-
dc.identifier.other0000-0002-5956-2249
dc.identifier.other0000-0002-7004-9956
dc.identifier.urihttp://hdl.handle.net/20.500.14302/1793
dc.description.abstractWe present the results of near continuous TESS optical observations of the asynchronous polar CD Ind (RX J2115-5840). The 27.9 d long light curve, with 2 min resolution, reveals remarkable changes in the magnetic accretion geometry of the system over the 7.3 d beat period. We have modelled the changes in the optical spin period pulse shape using a cyclotron emission mapping technique. The resulting cyclotron emission maps of the magnetic white dwarf reveal how the accretion geometry changes from single- to two-pole accretion and back over the beat cycle. Finally, we present the results from particle-based numerical magnetic accretion simulations, which agree with our interpretation of the changing accretion scenario.
dc.publisherMonthly Notices of the Royal Astronomical Society
dc.titleTESS observations of the asynchronous polar CD Ind: mapping the changing accretion geometry
dc.typearticle
dc.source.journalMNRAS
dc.source.journalMNRAS.486
dc.source.volume486
refterms.dateFOA2024-02-21T11:03:16Z
dc.identifier.bibcode2019MNRAS.486.2549H


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