Results 1 to 10 of about 31 (27)

The optical and near-infrared polarization properties of the OVV quasar 3C 345

open access: yesAstrophysical Journal, 1986
Extensive optical and near-infrared polarimetry and photometry were used to monitor the highly polarized quasar 3C 345. Strong wavelength-dependent fractional linear polarization was observed at optical wavelengths with higher fractional polarization toward the longer optical wavelengths.
P S Smith, T J Balonek, R Elston
exaly   +2 more sources

The Spectral Energy Distributions of Blazars and the Connections among XBLs, RBLs, and OVV Quasars [PDF]

open access: yesPublication of the Astronomical Society of Japan, 2001
Abstract In this paper, we introduce two composite spectral indices, $\alpha_{\mathrm{xox}}=\alpha_{\mathrm{ox}}- \alpha_{\rm {x}}$ and $\alpha_{\mathrm{oro}}=\alpha_{\mathrm{or}}- \alpha_{\mathrm{o}}$. In the composite color–color ($\alpha_{\mathrm{xox}}$–$\alpha_{\mathrm{oro}}$) diagram, there are three regions: (1) For XBLs and XBL ...
Ben-Zhong Dai, Liang Enwei
exaly   +2 more sources

EGRET detection of high-energy gamma radiation from the OVV quasar 3C 454.3

open access: yesAstrophysical Journal, 1993
High-energy gamma radiation has been observed from the optically violent variable quasar 3C 454.3 (PKS 2251 + 158) by the Energetic Gamma-Ray Experiment Telescope on the Compton Observatory. During the 1992 January-February observation, the emission showed a power-law photon spectrum with an exponent of -2.18 +/- 0.08.
R C Hartman, D L Bertsch, C E Fichtel
exaly   +2 more sources

Electron Energy Distributions of AGNs in the Thin Synchrotron Limit. II. Peaked Electron Energy Spectra of Blazars and OVV Quasars [PDF]

open access: yesSymposium - International Astronomical Union, 1994
We analyse multifrequency quasi-simultaneous observations of AGNs with the Inverse Synchrotron Transform (IST) method described in Salas et al. (1993) and in Paper I (this conference).The observational spectral energy distribution of blazars and OVV quasars used as applications of the IST method were obtained from multifrequency quasi-simultaneous ...
Irene Cruz-González   +2 more
openaire   +1 more source

The case for unification. [PDF]

open access: yesProc Natl Acad Sci U S A, 1995
Gopal-Krishna.
europepmc   +1 more source

Numerical Hydrodynamics in Special Relativity. [PDF]

open access: yesLiving Rev Relativ, 2003
Martí JM, Müller E.
europepmc   +1 more source

Erratum: "The 1987-1990 Optical Outburst of the OVV Quasar 3C 279" [A.J., 100, 1452 (1990)]

open access: yesThe Astronomical Journal, 1991
J. R. Webb   +7 more
openaire   +1 more source

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