Quasars: From the Physics of Line Formation to Cosmology
Quasars accreting matter at very high rates (known as extreme Population A (xA) or super-Eddington accreting massive black holes) provide a new class of distance indicators covering cosmic epochs from the present-day Universe up to less than 1 Gyr from the Big Bang. The very high accretion rate make...
Main Authors: | , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
MDPI AG
2019-02-01
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Series: | Atoms |
Subjects: | |
Online Access: | https://www.mdpi.com/2218-2004/7/1/18 |