TESS observations of the asynchronous polar CD Ind: mapping the changing accretion geometry
dc.contributor | Finnish Centre for Astronomy with ESO (FINCA), Quantum, University of Turku, FI-20014, Turku, Finland | |
dc.contributor | Armagh Observatory and Planetarium, College Hill, Armagh, Northern Ireland, BT61 9DG, UK | |
dc.contributor | South African Astronomical Observatory, PO Box 9, Observatory, 7935 Cape Town, South Africa | |
dc.contributor | Department of Physics and Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK | |
dc.contributor.author | Hakala, Pasi | |
dc.contributor.author | Ramsay, Gavin | |
dc.contributor.author | Potter, Stephen B. | |
dc.contributor.author | Beardmore, Andrew | |
dc.contributor.author | Buckley, David A. H. | |
dc.contributor.author | Wynn, Graham | |
dc.date.accessioned | 2024-02-21T11:03:16Z | |
dc.date.available | 2024-02-21T11:03:16Z | |
dc.date.issued | 2019-06-01T00:00:00Z | |
dc.identifier.doi | 10.1093/mnras/stz992 | |
dc.identifier.doi | 10.48550/arXiv.1904.02949 | |
dc.identifier.other | 2019MNRAS.tmp..979H | |
dc.identifier.other | 2019arXiv190402949H | |
dc.identifier.other | astro-ph.SR | |
dc.identifier.other | astro-ph.HE | |
dc.identifier.other | 2019MNRAS.486.2549H | |
dc.identifier.other | 2019MNRAS.tmp..979H | |
dc.identifier.other | 2019arXiv190402949H | |
dc.identifier.other | 10.1093/mnras/stz992 | |
dc.identifier.other | arXiv:1904.02949 | |
dc.identifier.other | 10.48550/arXiv.1904.02949 | |
dc.identifier.other | - | |
dc.identifier.other | 0000-0002-5956-2249 | |
dc.identifier.other | 0000-0002-7004-9956 | |
dc.identifier.uri | http://hdl.handle.net/20.500.14302/1793 | |
dc.description.abstract | We 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.publisher | Monthly Notices of the Royal Astronomical Society | |
dc.title | TESS observations of the asynchronous polar CD Ind: mapping the changing accretion geometry | |
dc.type | article | |
dc.source.journal | MNRAS | |
dc.source.journal | MNRAS.486 | |
dc.source.volume | 486 | |
refterms.dateFOA | 2024-02-21T11:03:16Z | |
dc.identifier.bibcode | 2019MNRAS.486.2549H |