Discovery of a magnetic white dwarf with unusual short-period variability

Aleks Scholz, Joe Llama, Koraljka Muzic, Sarah Faller, Dirk Froebrich, Beate Stelzer

Research output: Contribution to journalArticlepeer-review


We report the discovery of a magnetic white dwarf which shows periodicvariability with P=110 min, color-dependent amplitudes and a transientphase shift in the blue compared to the red lightcurve - a previouslyunknown type of variability for this type of object. We attribute thevariations either to a close ultracool (thus far undetected) companionor, more likely, to magnetic spots with unusual temperature structure.
Original languageEnglish
Article number27
JournalResearch Notes of the AAS
Issue number1
Publication statusPublished - 12 Feb 2018


  • Stars: magnetic field
  • Stars: peculiar
  • Starspots
  • White dwarfs


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