Record number :
30876
Title of article :
A NEW SAMPLE OF GIGAHERTZ-PEAKED-SPECTRUM, EXTRA-GALACTIC RADIO SOURCES
Author/Authors :
524.74، V.G.Panajyan UDC نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 1998
Pages :
-245
From page :
246
To page :
0
Abstract :
A new sample of extra-Galactic radio sources having apeak in the continuous spectrum near I GHz has been compiled, using data available in the literature on their radio flux densities, and some characteristic parameters of radio sources in (his sample have been calculated. The median value of the calculated spectral indices of radio sources in the sample is -0,95, the median flux density at the peak (Sm) is 465 mJy, and almost half the radio sources (14 out of 30) have ultrasteep spectra, for which the spectral indices in the high-frequency range are (alpha(cal) < -1.0 (S alpha v^alpha).
Keywords :
Gannnia-ray bursts , cosmic rays , Theory
Journal title :
Astrophysics
Link To Document :