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Active Galactic Nuclei
Active Galactic Nuclei
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Excellent- More about Active Galactic Nuclei
Galaxies have super-massive black holes that grow in symbiosis with their host galaxy, moderating star formation and releasing energy through accretion disks. AGN can shine one thousand times brighter than the galaxy, and when two galaxies merge, binary black holes can form and emit gravitational waves.
Format: Hardback
Length: 320 pages
Publication date: 14 November 2022
Publisher: ISTE Ltd
All galaxies harbor a supermassive black hole at their core, which grows in size in symbiosis with their host galaxy and regulates star formation. Matter that is propelled towards the nucleus forms an accretion disk, which transfers angular momentum and releases significant energy as material falls into the black hole. This phenomenon is known as active galactic nuclei (AGN). A nucleus can shine one thousand times brighter than the entire galaxy, composed of 200 billion stars. Nuclear activity can manifest in various forms, ranging from powerful quasars to ordinary Seyfert galaxies, and even radio galaxies, which eject collimated plasma at ten times the radius of the galaxy.
This book delves into these diverse manifestations and presents a comprehensive perspective. When two galaxies merge, a binary black hole is formed, and the two black holes spiral inward and merge, emitting long gravitational waves that could potentially be detected by the future LISA satellite.
The study of AGN has opened up new insights into the universe, shedding light on the formation and evolution of galaxies, the behavior of black holes, and the nature of gravity. It has also contributed to our understanding of the cosmos as a whole, as AGN are believed to be the most powerful sources of energy in the universe.
As technology advances, we can expect to learn more about AGN and their role in shaping the universe. With the help of telescopes, satellites, and other instruments, scientists will continue to explore the mysteries of these celestial objects and unravel the secrets of the cosmos.
Weight: 453g
Dimension: 10 x 10 x 10 (mm)
ISBN-13: 9781789450873
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