Time-resolved spectropolarimetric observations of polars WX LMi and BY Cam


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Ozdarcan D. T. , Smith P. S. , KESKİN V.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol.468, no.3, pp.2923-2931, 2017 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 468 Issue: 3
  • Publication Date: 2017
  • Doi Number: 10.1093/mnras/stx518
  • Title of Journal : MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
  • Page Numbers: pp.2923-2931

Abstract

Time-series spectropolarimetric observations of polar WX LMi and asynchronous polar BY Cam are presented. Magnetic field properties, radial velocities and optical polarization are investigated via consecutive observations with good phase sampling during a single orbital cycle. Both systems are found to have a decentred dipole magnetic field configuration. One of the poles of WX LMi has a field strength of 49 MG, while the other pole may have possible field strengths of 69, 104 or 207 MG, depending on the harmonic numbers of the cyclotron humps observed in the circularly polarized spectrum. For BY Cam, a field strength of 168 MG is found for one of the poles, while field strengths of 70, 160 or 212 MG are possible for the other pole.