(1 hr ago) ATel 16831: Gradual optical brightening in GRO J0422+32 during quiescence: precursor to an outburst... https://www.astronomerstelegram.org/?read=16831
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(1 hr ago) ATel 16831: Gradual optical brightening in GRO J0422+32 during quiescence: precursor to an outburst... https://www.astronomerstelegram.org/?read=16831