Galaxy III Zw 002 tagged posts

First Observations ever of the Outskirts of a Supermassive Black Hole’s Accretion Disk

An artist’s impression of a supermassive black hole with an accretion disk orbiting it. The annotations show a hypothetical double-peaked profile with arrows indicating where in the broad line region each peak originates. Credit: NOIRLab/NSF/AURA/P. Marenfeld
An artist’s impression of a supermassive black hole with an accretion disk orbiting it. The annotations show a hypothetical double-peaked profile with arrows indicating where in the broad line region each peak originates. Credit: NOIRLab/NSF/AURA/P. Marenfeld

Nothing can evoke an existential perspective-spiral quite like looking at an image of a galaxy. At first glance, these sublime structures may appear rather serene. But in fact the center of many galaxies is a turbulent environment containing an actively feeding supermassive black hole.

Orbiting these incomprehensibly dense objects are swirling accretion disks of gas and dust, which feed the black hole and emit copious amounts of energy all along the electromagnetic spectrum—from high-energy gamma rays and X-rays, through visi...

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