Results 1 to 10 of about 282 (177)
MEASURING THE JET POWER OF FLAT-SPECTRUM RADIO QUASARS [PDF]
Astrophysical Journal, 2012 6 pages, 3 figures.
Stanislav S Shabala, L E H Godfrey
exaly +3 more sources
Radio Luminosity Function of Flat-spectrum Radio Quasars [PDF]
Astrophysical Journal, 2017 Abstract We present the radio luminosity function (LF) of flat-spectrum radio quasars (FSRQ), using the the largest and most complete sample to date. Cross-matching between the FIRST 20 cm and GB6 6 cm radio surveys, we find 638 flat-spectrum radio sources above 220 mJy at 1.4 GHz; of these, 327 are are classified and verified using ...
Peiyuan Mao +2 more
exaly +4 more sources
On the black hole mass–radio luminosity relation for flat-spectrum radio-loud quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 A new analysis of the connection between black-hole mass and radio luminosity in radio-selected flat-spectrum quasars (FSQ) is presented. In contrast to recent claims in the literature, we find no evidence that the black-hole masses of radio-selected FSQ are systematically lower that those of luminous optically-selected radio-loud quasars.
M J Jarvis, Ross J Mclure, Jarvis Matt J
exaly +3 more sources
The Gamma-Ray Luminosity Function of Flat-spectrum Radio Quasars
The Astrophysical JournalWe have utilized the largest sample of gamma-ray-selected Fermi flat-spectrum radio quasars (FSRQs) ever used (519 sources) to construct the luminosity function and its evolution through cosmic history. In addition to spanning large redshift (0
Garima Rajguru +4 more
doaj +5 more sources
A comparison of the radio–submillimetre spectra of BL Lacertae objects and flat-spectrum radio quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 1994 We present quasi-simultaneous radio, millimetre and submillimetre spectra of 22 BL Lac objects and 24 radio-loud, violently variable quasars. These data are used to test the hypothesis that BL Lacs and OVV quasars are fundamentally different objects. We find a considerable degree of consistency of the overall spectral shape in all sources and conclude ...
W K Gear, J A Stevens, D H Hughes
exaly +2 more sources
Reconnection-driven State Transitions in Flat Spectrum Radio Quasars
The Astrophysical JournalWe extend the work of Roychowdhury on skewness variations of the logarithmic flux, driven by large GeV flares in flat spectrum radio quasars (FSRQs), to a sample of 18 FSRQs.
Agniva Roychowdhury
doaj +3 more sources
The Detection of Teraelectronvolt Radiation from a Flat-spectrum Radio Quasar
The Astrophysical Journal LettersThe very high-energy (VHE; >100 GeV) radiation carries the signatures of the matter–energy interaction in some of the most extreme astrophysical environments.
Vaidehi S. Paliya +7 more
doaj +3 more sources
Relation between BL Lacertae Objects and Flat-Spectrum Radio Quasars
Astrophysical Journal, 2003 Blazars have two subclasses, namely, BL Lacertae objects and flat-spectrum radio quasars. The two subclasses share many similar observational properties, but their difference in emission lines cannot be ignored. What causes the difference? In this Letter, we propose a method to determine the intrinsic ratio, f, of the comoving luminosity in the jet to ...
J H Fan
exaly +2 more sources
Blue Fermi Flat Spectrum Radio Quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2012 Many blazars detected by the Fermi satellite, observed spectroscopically in the optical, are line-less, and have been classified as BL Lac objects. Optical-UV photometry of nearly one hundred of them allowed to determine the redshift for a handful of objects and redshift upper limits for the great majority.
GHISELLINI, GABRIELE +5 more
openaire +3 more sources
Magnetic field amplification and flat spectrum radio quasars [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 We perform time-dependent, spatially-resolved simulations of blazar emission to evaluate several flaring scenarios related to magnetic-field amplification and enhanced particle acceleration. The code explicitly accounts for light-travel-time effects and is applied to flares observed in the flat spectrum radio quasar (FSRQ) PKS 0208-512, which show ...
Chen, Xuhui +12 more
openaire +7 more sources