Evidence for rapid variability in the optical light curve of the Type Ia SN 2014J

  title={Evidence for rapid variability in the optical light curve of the Type Ia SN 2014J},
  author={Alceste Zoe Bonanos and Panayotis Boumis},
  journal={Astronomy and Astrophysics},
We present results of high-cadence monitoring of the optical light curve of the nearby, Type Ia SN 2014J in M82 using the 2.3m Aristarchos telescope. $B$ and $V$-band photometry on days 15-18 after $t_{max}(B)$, obtained with a cadence of 2 min per band, reveals evidence for rapid variability at the 0.02-0.05 mag level on timescales of 15-60 min on all four nights, taking the red noise estimation at face value. The decline slope was measured to be steeper in the $B$-band than in $V$-band, and… 

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