An international research team reports that the activity of black holes can be observed as visible light during outbursts, and that flickering light emerging from gases surrounding black holes is a direct indicator of this. The team’s results, published in Nature, indicate that optical rays and not just X-rays provide reliable observational data for black hole activity. Credit: Eiri Ono/Kyoto University
Black hole activity can be observed via visible rays. All you need is a 20 cm telescope to observe a nearby, active black hole. An international team reports the activity of black holes can be observed as visible light during outbursts, and that flickering light emerging from gases surrounding black holes is a direct indicator of this...
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