Quasars: From the Physics of Line Formation to Cosmology
AbstractQuasars 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 makes it possible that massive black holes hosted in xA quasars can radiate at a stable, extreme luminosity-to-mass ratio. This in turn translates into stable physical and dynamical conditions of the mildly ionized gas in the quasar low-ionization line emitting region. In this contribution, we analyze the main optical and UV spectral properties of extreme Population A quasars that make them easily identifiable in large spectroscopic surveys at low- (
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Marziani, P.; Bon, E.; Bon, N.; del Olmo, A.; Martínez-Aldama, M.L.; D’Onofrio, M.; Dultzin, D.; Negrete, C.A.; Stirpe, G.M. Quasars: From the Physics of Line Formation to Cosmology. Atoms 2019, 7, 18.
Marziani P, Bon E, Bon N, del Olmo A, Martínez-Aldama ML, D’Onofrio M, Dultzin D, Negrete CA, Stirpe GM. Quasars: From the Physics of Line Formation to Cosmology. Atoms. 2019; 7(1):18.Chicago/Turabian Style
Marziani, Paola; Bon, Edi; Bon, Natasa; del Olmo, Ascension; Martínez-Aldama, Mary L.; D’Onofrio, Mauro; Dultzin, Deborah; Negrete, C. A.; Stirpe, Giovanna M. 2019. "Quasars: From the Physics of Line Formation to Cosmology." Atoms 7, no. 1: 18.
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