In this Letter we report the detection of a strong and extremely blueshifted X-ray absorption feature in the 1 Ms Chandra spectrum of CXOCDFS J033260.0-274748...
Research on candidates for non-cosmological redshifts
The paradox of apparent optical associations of galaxies with very different redshifts, the so-called anomalous redshift problem, is around 35 years old, but is...
We present submillimeter observations of the z= 3.653 quasar SDSS 160705+533558 together with data in the optical and infrared. The object is unusually bright...
Resolving the Innermost Region of the Accretion Disk of the Lensed Quasar Q2237+0305 through Gravitational Microlensing
We study three high magnification microlensing events, generally recognized as probable caustic crossings, in the optical light curves of the multiply imaged...
RESOLVING THE INNERMOST REGION OF THE ACCRETION DISK OF THE LENSED QUASAR Q2237+0305 THROUGH GRAVITATIONAL MICROLENSING
We study three high magnification microlensing events, generally recognized as probable caustic crossings, in the optical light curves of the multiply imaged...
Revealing the inner workings of the lensed quasar SDSS J1339+1310: Insights from microlensing analysis
Aims. We aim to unveil the structure of the continuum and broad-emission line (BEL) emitting regions in the gravitationally lensed quasar SDSS J1339+1310 by...
Revealing the structure of the lensed quasar Q 0957+561. I. Accretion disk size
Aims: We aim to use signatures of microlensing induced by stars in the foreground lens galaxy to infer the size of the accretion disk in the gravitationally...
Revealing the structure of the lensed quasar Q 0957+561. II. Supermassive black hole mass via gravitational redshift
Aims: We intend to use the impact of microlensing on the Fe III λλ2039−2113 emission line blend along with a measure of its gravitational redshift to estimate...
Revealing the structure of the lensed quasar Q 0957+561. III. Constraints on the size of the broad-line region
Aims: Our aim is to examine the size, kinematics, and geometry of the broad-line region (BLR) in the double-lensed quasar Q 0957+561 by analyzing the impact of...