SIMBAD references

2019MNRAS.486.2549H - Mon. Not. R. Astron. Soc., 486, 2549-2556 (2019/June-3)

TESS observations of the asynchronous polar CD Ind: mapping the changing accretion geometry.

HAKALA P., RAMSAY G., POTTER S.B., BEARDMORE A., BUCKLEY D.A.H. and WYNN G.

Abstract (from CDS):

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.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - stars: individual: CD Ind - novae, cataclysmic variables

Simbad objects: 5

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