Time delay cosmography
T Treu, PJ Marshall - The Astronomy and Astrophysics Review, 2016 - Springer
Gravitational time delays, observed in strong lens systems where the variable background
source is multiply imaged by a massive galaxy in the foreground, provide direct …
source is multiply imaged by a massive galaxy in the foreground, provide direct …
Gravitational lensing
M Bartelmann - Classical and Quantum Gravity, 2010 - iopscience.iop.org
Gravitational lensing has developed into one of the most powerful tools for the analysis of
the dark universe. This review summarizes the theory of gravitational lensing, its main …
the dark universe. This review summarizes the theory of gravitational lensing, its main …
The radiative efficiency of accretion flows in individual active galactic nuclei
The radiative efficiency of active galactic nucleus (AGN) is commonly estimated based on
the total mass accreted and the total AGN light emitted per unit volume in the universe …
the total mass accreted and the total AGN light emitted per unit volume in the universe …
The quasar accretion disk size–black hole mass relation
CW Morgan, CS Kochanek, ND Morgan… - The Astrophysical …, 2010 - iopscience.iop.org
We use the microlensing variability observed for 11 gravitationally lensed quasars to show
that the accretion disk size at a rest-frame wavelength of 2500 Å is related to the black hole …
that the accretion disk size at a rest-frame wavelength of 2500 Å is related to the black hole …
The sizes of the X-ray and optical emission regions of RXJ 1131–1231
X Dai, CS Kochanek, G Chartas… - The Astrophysical …, 2009 - iopscience.iop.org
We use gravitational microlensing of the four images of the z= 0.658 quasar RXJ 1131–1231
to measure the sizes of the optical and X-ray emission regions of the quasar. The (face-on) …
to measure the sizes of the optical and X-ray emission regions of the quasar. The (face-on) …
Quasar accretion disks are strongly inhomogeneous
Active galactic nuclei have been observed to vary stochastically with 10%–20% rms
amplitudes over a range of optical wavelengths where the emission arises in an accretion …
amplitudes over a range of optical wavelengths where the emission arises in an accretion …
Sizes and temperature profiles of quasar accretion disks from chromatic microlensing
JA Blackburne, D Pooley, S Rappaport… - The Astrophysical …, 2011 - iopscience.iop.org
Microlensing perturbations to the flux ratios of gravitationally lensed quasar images can vary
with wavelength because of the chromatic dependence of the accretion disk's apparent size …
with wavelength because of the chromatic dependence of the accretion disk's apparent size …
COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses-XIII. Time delays and 9-yr optical monitoring of the lensed quasar RX J1131− 1231
M Tewes, F Courbin, G Meylan, CS Kochanek… - Astronomy & …, 2013 - aanda.org
We present the results from nine years of optically monitoring the gravitationally lensed z
QSO= 0.658 quasar RX J1131− 1231. The R-band light curves of the four individual images …
QSO= 0.658 quasar RX J1131− 1231. The R-band light curves of the four individual images …
Cosmograil: the cosmological monitoring of gravitational lenses-xi. techniques for time delay measurement in presence of microlensing
M Tewes, F Courbin, G Meylan - Astronomy & Astrophysics, 2013 - aanda.org
Measuring time delays between the multiple images of gravitationally lensed quasars is now
recognized as a competitive way to constrain the cosmological parameters, and it is …
recognized as a competitive way to constrain the cosmological parameters, and it is …
Microlensing of strongly lensed quasars
G Vernardos, D Sluse, D Pooley, RW Schmidt… - Space Science …, 2024 - Springer
Strong gravitational lensing of quasars has the potential to unlock the poorly understood
physics of these fascinating objects, as well as serve as a probe of the lensing mass …
physics of these fascinating objects, as well as serve as a probe of the lensing mass …