This review discusses the current status of supermassive black hole research, as seen from
a purely observational standpoint. Since the early '90s, rapid technological advances, most …

With references to both key and often forgotten pioneering works, this article starts by
presenting a review into how we came to believe in the existence of massive black holes at …

Since the 1960s, when the connection between quasar energetics and supermassive black
holes was first established, galactic nuclei have remained objects of intense interest to …

We study the growth rate of stars via stellar collisions in dense star clusters, calibrating our
analytic calculations with direct N-body simulations of up to 65,536 stars, performed on the …

The masses and emission-line region sizes of active galactic nuclei (AGNs) can be
measured by" reverberation-mapping" techniques, and we use these results to calibrate …

Virial black hole mass estimates are presented for 12 698 quasars in the redshift interval
0.1≤ z≤ 2.1, based on modelling of spectra from the Sloan Digital Sky Survey (SDSS) first …

Abstract We develop a Monte Carlo technique to test models for the true power spectra of
intermittently sampled light curves against the noisy, observed power spectra, and produce …

We compute rates of tidal disruption of stars by supermassive black holes in galactic nuclei,
using downwardly revised black hole masses from the M BH-σ relation. In galaxies with …

New black hole mass estimates are presented for a sample of 72 active galactic nuclei
(AGNs) covering three decades in optical luminosity. Using a subsample of Seyfert galaxies …

Analyzing a sample of 84 early-type galaxies (ETGs) with directly measured supermassive
black hole masses—nearly doubling the sample size of such galaxies with multicomponent …