An optical view of BL Lacertae objects
R Falomo, E Pian, A Treves - The Astronomy and Astrophysics Review, 2014 - Springer
BL Lac objects are active nuclei, hosted in massive elliptical galaxies, the emission of which
is dominated by a relativistic jet closely aligned with the line of sight. This implies the …
is dominated by a relativistic jet closely aligned with the line of sight. This implies the …
Kinematics of parsec-scale jets of gamma-ray blazars at 43 GHz within the VLBA-BU-BLAZAR program
SG Jorstad, AP Marscher, DA Morozova… - The Astrophysical …, 2017 - iopscience.iop.org
We analyze the parsec-scale jet kinematics from 2007 June to 2013 January of a sample of
γ-ray bright blazars monitored roughly monthly with the Very Long Baseline Array at 43 GHz …
γ-ray bright blazars monitored roughly monthly with the Very Long Baseline Array at 43 GHz …
Gemini GNIRS Near-infrared Spectroscopy of 50 Quasars at z≳ 5.7
We report initial results from a large Gemini program to observe z≳ 5.7 quasars with GNIRS
near-IR spectroscopy. Our sample includes 50 quasars with simultaneous∼ 0.85–2.5 μm …
near-IR spectroscopy. Our sample includes 50 quasars with simultaneous∼ 0.85–2.5 μm …
Roma-BZCAT: a multifrequency catalogue of blazars
E Massaro, P Giommi, C Leto, P Marchegiani… - Astronomy & …, 2009 - aanda.org
We present a new catalogue of blazars based on multifrequency surveys and on an
extensive review of the literature. Blazars are classified as BL Lacertae objects, as flat …
extensive review of the literature. Blazars are classified as BL Lacertae objects, as flat …
H i intensity map** with MeerKAT: calibration pipeline for multidish autocorrelation observations
While most purpose-built 21-cm intensity map** experiments are close-packed
interferometer arrays, general-purpose dish arrays should also be capable of measuring the …
interferometer arrays, general-purpose dish arrays should also be capable of measuring the …
Using the Fundamental Plane of black hole activity to distinguish X-ray processes from weakly accreting black holes
RM Plotkin, S Markoff, BC Kelly… - Monthly Notices of …, 2012 - academic.oup.com
Abstract The Fundamental Plane of black hole activity is a relation between X-ray luminosity,
radio luminosity and black hole mass for hard-state Galactic black holes and their …
radio luminosity and black hole mass for hard-state Galactic black holes and their …
Luminous thermal flares from quiescent supermassive black holes
ABSTRACT A dormant supermassive black hole lurking in the center of a galaxy will be
revealed when a star passes close enough to be torn apart by tidal forces, and a flare of …
revealed when a star passes close enough to be torn apart by tidal forces, and a flare of …
X-ray insights into the nature of PHL 1811 analogs and weak emission-line quasars: Unification with a geometrically thick accretion disk?
We present an X-ray and multiwavelength study of 33 weak emission-line quasars (WLQs)
and 18 quasars that are analogs of the extreme WLQ, PHL 1811, at $ z\approx 0.5$–2.9 …
and 18 quasars that are analogs of the extreme WLQ, PHL 1811, at $ z\approx 0.5$–2.9 …
Extreme variability quasars from the sloan digital sky survey and the dark energy survey
We perform a systematic search for long-term extreme variability quasars (EVQs) in the
overlap** Sloan Digital Sky Survey and 3 Year Dark Energy Survey imaging, which …
overlap** Sloan Digital Sky Survey and 3 Year Dark Energy Survey imaging, which …
The relation between broad lines and γ-ray luminosities in Fermi blazars
T Sbarrato, G Ghisellini, L Maraschi… - Monthly Notices of the …, 2012 - academic.oup.com
We study the relation between the mass accretion rate, the jet power and the black hole
mass of blazars. With this aim, we make use of the Sloan Digital Sky Survey and the 11 …
mass of blazars. With this aim, we make use of the Sloan Digital Sky Survey and the 11 …