Observations of high-amplitude optical transients AT2020ray and AT2020ugj discovered by MASTER robotic netстатья
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Аннотация:We report photometry of two optical transients, MASTER OT J224524.92+211742.0 = AT2020ray and MASTER OT J213908.79+161240.2 = 2020ugj. Additionally, a spectrum of AT2020ray was obtained with the Russian 6-meter telescope, BTA. Both transients were classified as WZ~Sge-type cataclysmic variables in superoutbursts. The superoutburst of AT2020ray was accompanied by multiple type B rebrightenings. In the brightstate, both objects had strong UV excess.