How MIT astrophysicist Erin Kara studies black hole echoes to understand galaxy formation
By
Jennifer Chu | MIT News
Summary
MIT Associate Professor Erin Kara studies black holes not as dark voids but as extremely dense objects that warp space-time and generate massive accretion disks. Her research aims to connect the extreme physics of black holes — including their echoes and reverberations — to the formation and evolution of galaxies like the Milky Way. The article explores how observing black hole "echoes" through X-ray reverberation mapping can reveal insights about the environments immediately surrounding these objects and their broader cosmic influence.
Source
Twitter / XHow MIT astrophysicist Erin Kara studies black hole echoes to understand galaxy formationnews.mit.eduKey quotes
· 3 pulledBlack holes are often misunderstood to be just that: dark and mysterious voids that are somehow akin to Alice in Wonderland's mind-bending rabbit hole. But rather than a tunnel of nothing, a black hole is actually something — and a lot of it.
The densest objects in the universe, black holes exert tremendous gravitational pull, gathering in the surrounding fabric of space and time, and generating huge disks of matter that whirl toward a black hole before falling in, past the point of no return.
In recent years, as astronomers have been able to train more telescopes on these extreme objects, they've begun to 'hear' the echoes of black holes — reverberations of X-ray light that reveal what's happening in the immediate vicinity of these cosmic giants.
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