Summary
When the fast streams of energy (jets) get weaker, a hidden part called the accretion disk can be seen 🌌.
This helps us understand how giant black holes give power to whole galaxies.
Key Points
3 points1
Space telescopes studied four bright blazars.
2
Weaker jets let the hidden disk shine.
3
Finding helps learn about giant black holes.
New Words to Learn
12 wordsblazar
a very bright galaxy that points a strong beam of energy toward Earth
supermassive black hole
an extremely huge black hole that sits in the middle of a galaxy
jet
a fast stream of particles shooting out from near a black hole
accretion disk
a flat ring of gas and dust swirling around a black hole
relativistic
moving almost as fast as light
gamma rays
the most energetic kind of light
tera‑electron volt
a way scientists measure extremely high energy
spectra
the spread of different kinds of light that a source gives off
Gaussian
a smooth, bell‑shaped pattern seen in data
instrumental
related to the tools used for measuring
background effects
extra signals that come from the surroundings, not the main object
Astrophysical Journal
a scientific magazine where astronomers share new discoveries
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