According to Einstein’s theory of general relativity gravity affects light as well as matter. One consequence of this theory, based on the Principle of...
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NewsEinstein’s Principle of Equivalence verified in quasars for the first time
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PublicationElectron-beam interaction with emission-line clouds in blazars
Context. An electron-positron beam escaping from the magnetospheric vacuum gap of an accreting black hole interacts with recombination-line photons from...
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PublicationEnvironments of nearby quasars in Sloan Digital Sky Survey
Context: For the first time, spectroscopic galaxy redshift surveys are enabling galaxies to be studied with the nearest quasars. This allows the dependence of...
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PublicationErratum: A novel black hole mass scaling relation based on coronal gas, and its dependence with the accretion disc
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PublicationErratum: VLA and ALMA observations of the lensed radio-quiet quasar SDSS J0924+0219: a molecular structure in a 3 µJy radio source
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PublicationEstimate of the Accretion Disk Size in the Gravitationally Lensed Quasar HE 0435–1223 Using Microlensing Magnification Statistics
We present a measurement of the accretion disk size of the quadruple lensed quasar HE 0435–1223 from well-sampled 13-year COSMOGRAIL optical light curves. Using...
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PublicationEuclid preparation. V. Predicted yield of redshift 7 < z < 9 quasars from the wide survey
We provide predictions of the yield of 7 < z < 9 quasars from the Euclid wide survey, updating the calculation presented in the Euclid Red Book in several ways...
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PublicationEvolution of active galactic nuclei broad-line region clouds: low- and high-ionization lines
The formation of quasar broad-line region (BLR) clouds via thermal instability in the presence of Alfvén heating has been discussed by Gonçalves, Jatenco...
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PublicationExamining supernova events in Type 1 active galactic nuclei
A statistical study of intermediate Palomar Transient Factory supernovae (SNe) in Type 1 active galactic nuclei (AGNs) has shown a major deficit of supernovae...