CBA Center for Backyard Astrophysics



Figure 1.

Figure 1

Long light curve of TT Ari on 17/18 December 1997, showing the persistent superhump. This signal continued throughout the 115-day observing season, with no obvious changes in period or amplitude. The well-known 20-minute quasiperiodic signal is present too, but at this scale masquerades as noise in the light curve.

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