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5 papers · 1 filter
A correlation analysis of flux ratios and the Doppler factor for EGRET AGN sources
L. H. Huang, D. R. Jiang, Xinwu Cao
We present a correlation analysis between the flux ratio of high-energy gamma-ray emission to synchrotron emission and the Doppler factor for a sample of EGRET AGNs. The results fa…
Relation between millimeter wavelengths emission and high-energy emission for active galactic nuclei
L. H. Huang, D. R. Jiang, Xinwu Cao
After comparing the flux densities of a sample of active galactic nuclei detected by energetic gamma-ray experiment telescope at 90 and 230 GHz with the -ray emissions detected…
Intrinsic Size OF Sgr A*: 72 Schwarzschild Radii
K. Y. Lo, Z. -Q. Shen, J. -H. Zhao +1
Recent proper motion studies of stars at the very center of the Galaxy strongly suggest that Sagittarius (Sgr) A*, the compact nonthermal radio source at the Galactic Center, is a…
A 5-GHz Southern Hemisphere VLBI Survey of Compact Radio Sources - II
Z. -Q. Shen, T. -S. Wan, J. M. Moran +20
We report the results of a 5-GHz southern-hemisphere snapshot VLBI observation of a sample of blazars. The observations were performed with the Southern Hemisphere VLBI Network plu…
Steps toward Determination of the Size and Structure of the Broad-Line Region in Active Galactic Nuclei. XII. Ground-Based Monitoring of 3C 390.3
M. Dietrich, B. M. Peterson, P. Albrecht
Results of a ground-based optical monitoring campaign on 3C 390.3 in 1994-95 are presented. The broad-band fluxes (B, V, R, and I), the spectrophotometric optical continuum flux F(…