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arxiv: 1810.07298 · v2 · pith:AURFS4ZEnew · submitted 2018-10-16 · 🌌 astro-ph.HE

A Search For Pulsations in the Optical Light Curve of the Nova ASASSN-17hx

classification 🌌 astro-ph.HE
keywords novaamplitudeasassn-17hxfractionalminutesobservationsopticalperiodic
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We present high-speed optical observations of the nova ASASSN-17hx, taken both immediately after its discovery and close to its first peak in brightness, to search for seconds -- minutes pulsations associated with the convective eddy turnover timescale within the nova envelope. We do not detect any periodic signal with greater than $3\sigma$ significance. Through injection and recovery, we rule out periodic signals of fractional amplitude $>7.08\times10^{-4}$ on timescales of 2 seconds and fractional amplitude $>1.06\times10^{-3}$ on timescales of 10 minutes. Additional observations of novae are planned to further constrain ongoing simulations of the launch and propagation of nova winds.

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