News tagged with black holes

Hotspots in an active galactic nucleus

The nucleus of a so-called "active" galaxy contains a massive black hole that is vigorously accreting material. As a result, the nucleus often ejects bipolar jets of rapidly moving charged particles that radiate brightly ...

dateOct 24, 2016 in Astronomy
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Twin jets pinpoint the heart of an active galaxy

An international team of astronomers has measured the magnetic field in the vicinity of a supermassive black hole. A bright and compact feature of only 2 light days in size was directly observed by a world-wide ensemble of ...

dateSep 19, 2016 in Astronomy
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Changes in a distant quasar

Yale astronomers Grant Tremblay and Meredith Powell are part of the first research team to document a "changing look" quasar through a full cycle from dim to bright to dim again.

dateSep 16, 2016 in Astronomy
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Studies find echoes of black holes eating stars

Supermassive black holes, with their immense gravitational pull, are notoriously good at clearing out their immediate surroundings by eating nearby objects. When a star passes within a certain distance of a black hole, the ...

dateSep 15, 2016 in Astronomy
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