The redshift dependence of spectral index in powerful radio galaxies

The redshift dependence of spectral index in powerful radio galaxies

We present and discuss in this paper the rest frame radio spectra (1-25 GHz) of a sample of fourteen radio galaxies atz >2 from the newly defined MRC/1Jy complete sample of 558 radio sources. These galaxies are among the most powerful radio sources known and range in luminosity from 1028-1028.8 w...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of astrophysics and astronomy 1998-12, Vol.19 (3-4), p.63-77
Hauptverfasser: Athreya, Ramana M, Kapahi, Vijay K
Format: Artikel
Sprache:eng
Schlagworte:
Acceleration
Astrophysics
Electron energy
Energy spectra
Galaxies
Luminosity
Radio
Radio astronomy
Radio galaxies
Radio sources (astronomy)
Radio spectra
Red shift
Relativistic effects
Samples
Shock fronts
Spectra
Stars & galaxies
Statistical analysis
Statistical methods
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:We present and discuss in this paper the rest frame radio spectra (1-25 GHz) of a sample of fourteen radio galaxies atz >2 from the newly defined MRC/1Jy complete sample of 558 radio sources. These galaxies are among the most powerful radio sources known and range in luminosity from 1028-1028.8 watt Hz-1 at 1 GHz. We find that the median rest frame spectral index of this sample of galaxies atz >2 is significantly steeper than that of a matched luminosity sample of 3CRR galaxies which are at a much lower redshift (0.85
ISSN:0250-6335
0973-7758
DOI:10.1007/BF02714911