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The FIRST bright quasar survey. III.
We present the results of an extension of the FIRST Bright Quasar Survey (FBQS) to the South Galactic cap, and to a fainter optical magnitude limit. Radio source counterparts... -
The FIRST bright quasar survey. II.
We have used the Very Large Array (VLA) FIRST survey and the Automated Plate Measuring Facility (APM) catalog of the Palomar Observatory Sky Survey I (POSS-I) plates as the... -
Spectral energy distributions of Fermi blazars
Recent works have developed samples of blazars from among the Fermi Large Area Telescope unassociated sources via machine-learning comparisons with known blazar samples.... -
Multiepoch ~2-43GHz VLBI monitoring obs. of OJ 287
We collected the archival data of blazar OJ 287 from heterogeneous very long baseline interferometry monitoring programs at 2.3, 8.6, 15, and 43GHz. The data reduction and... -
MOMO. VI. Radio variability of OJ 287
Based on our dedicated Swift monitoring program, MOMO, OJ 287 is one of the best-monitored blazars in the X-ray-UV-optical regime. Here, we report results from our accompanying,... -
Fermi jetted AGN with reliable redshift
We collect a large sample with a reliable redshift detected by the Fermi satellite after 10yr of data (4FGL-DR2), including blazars, gamma-ray narrow-line Seyfert 1 galaxies... -
Combined radio Multi-Survey Cat. (MSC) of 4FGL
Approximately one-third of existing {gamma}-ray sources identified by the Fermi Gamma-Ray Space Telescope are considered to be unassociated, with no known counterpart at other... -
FSRQs & BL Lac objects from 4FGL blazar candidates
Among the ~2157 unassociated sources in the third data release (DR3) of the fourth Fermi catalog, ~1200 were observed with the Neil Gehrels Swift Observatory pointed... -
SED, optical & gamma-ray parameters for 656 blazars
It is known that the blazar jet emissions are dominated by nonthermal radiation, while the accretion disk jets are normally dominated by thermal emission. In this work,... -
Classification and Jet Power of Fermi Blazars
In this work, we compile a sample of 449 Fermi blazars with the luminosity of the broadline region, the black hole mass, the beam radio luminosity, and the jet power; obtain the... -
BVRI photometry of S5 0716+714
Multiband optical photometry data of blazar S5 0716+714 obtained from 2002 to 2019 reveal stable color index change with flux variability. We analyzed this trend under... -
Fermi-LAT-detected blazars fundamental parameters
Aiming to delineate the physical framework of blazars, we present an effective method to estimate four important parameters based on the idea proposed by Becker & Kafatos... -
Fermi blazar jet properties
The origin of jets is one of the most important issues concerning active galactic nuclei, yet it has remained obscure. In this work, we made use of information from emission... -
Luminosities & peak frequencies of 4FGL blazars
Blazars show extreme observational properties that are due to the beaming effect with the jet being close to the line of sight. It was found that the observed luminosity is... -
X-ray/UV/opt counterparts of 4FGL gamma-ray sources
The Fermi-LAT unassociated sources represent some of the most enigmatic gamma-ray sources in the sky. Observations with the Swift-XRT and -UVOT telescopes have identified... -
MOJAVE. XIX. Brightness temperatures of jets
We present multiepoch, parsec-scale core brightness temperature observations of 447 active galactic nucleus (AGN) jets from the MOJAVE and 2cm Survey programs at 15GHz from 1994... -
Multiwavelength light curves of PG 1553+113
Blazar PG 1553+113 is thought to be a host of supermassive black hole binary system. A 2.2yr quasi-periodicity in the {gamma}-ray light curve was detected, possibly a result of... -
The blazar B2 1420+32 opt. & gamma LCs & opt. sp.
Blazars are active galactic nuclei with their relativistic jets pointing toward the observer, comprising two major subclasses, flat-spectrum radio quasars (FSRQs) and BL Lac... -
Korean VLBI Network monitoring of OJ 287
We present the results of simultaneous multifrequency imaging observations at 22, 43, 86, and 129GHz of OJ 287. We used the Korean Very Long Baseline Interferometry Network as... -
Blazar Radio and Optical Survey (BROS)
Utilizing the latest and the most sensitive radio and optical catalogs, we completed a new blazar candidate catalog, Blazar Radio and Optical Survey (BROS), which includes 88211...
