Spectral Shapes of Compact Extragalactic Radio Sources

1982 ◽  
pp. 297-299
Author(s):  
Steven R. Spangler
Keyword(s):  
Radio Sources ◽  
Extragalactic Radio Sources ◽  
Spectral Shapes

scholarly journals Survey and Analysis of 1-22 GHz Spectra for the Full Sample of 660 AGNs North of Declination −30°

2002 ◽  
Vol 184 ◽  
pp. 299-300 ◽  
Author(s):  
Y. Y. Kovalev ◽  
N. A. Nizhelsky ◽  
Yu. A. Kovalev ◽  
G. V. Zhekanis ◽  
A. V. Bogdantsov
Keyword(s):  
Rest Frame ◽  
Gamma Ray ◽  
Broad Band ◽  
Radio Sources ◽  
Full Sample ◽  
Extragalactic Radio Sources ◽  
Compact Component ◽  
Relativistic Jet ◽  
Specific Radio ◽  
Spectral Shapes

AbstractMeasurements of broad-band 6-frequency 1-22 GHz spectra of 660 compact extragalactic radio sources were performed in 1997 (for declinations −30° < δ < + 43°) and 1998 (north of+49°) at RATAN-600. “Average rest-frame” statistical spectral shapes for different subsamples of sources are analyzed. These shapes and each spectrum observed can be represented as the sum of a spectrum of an extended optically thin component (magnetized envelope/lobe), constant or slowly variable and dominating at lower frequencies, and a spectrum of a compact component (relativistic jet), dominating at higher frequencies, with any type of variability. We have revealed specific radio features of the EGRET sub-sample; this favors the models suggesting a relation between the emission mechanisms in radio and gamma-ray ranges. Sources are sampled for which the most compact VLBI structure is expected.

Super-luminal expansion in extragalactic radio sources

Nature ◽  
1977 ◽  
Vol 267 (5608) ◽  
pp. 211-216 ◽  
Author(s):  
R. D. Blandford ◽  
C. F. McKee ◽  
M. J. Rees
Keyword(s):  
Radio Sources ◽  
Extragalactic Radio Sources

Origin of the central radio gaps in extragalactic radio sources

1992 ◽  
Vol 187 (2) ◽  
pp. 209-214 ◽  
Author(s):  
I. E. Ekejiuba ◽  
P. N. Okeke ◽  
S. E. Okoye
Keyword(s):  
Radio Sources ◽  
Extragalactic Radio Sources

scholarly journals Faraday Rotation Effect in Extragalactic Radio Sources

Nature ◽  
1963 ◽  
Vol 200 (4908) ◽  
pp. 765-765 ◽  
Author(s):  
A. G. PACHOLCZYK
Keyword(s):  
Faraday Rotation ◽  
Radio Sources ◽  
Rotation Effect ◽  
Extragalactic Radio Sources
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