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astro-ph2005
Optical properties of the NGC 5328 group of galaxies
R. Gruetzbauch, F. Annibali, A. Bressan +4
We present the results of a photometric and spectroscopic study of seven members of the NGC 5328 group of galaxies, a chain of galaxies spanning over 200 kpc (H_0 = 70 km/s/Mpc). W…
astro-ph2005
The peak luminosity - peak energy correlation in GRBs
G. Ghirlanda, G. Ghisellini, C. Firmani +2
We derive the peak luminosity - peak energy (L_iso - E_peak) correlation using 22 long Gamma-Ray Bursts (GRBs) with firm redshift measurements. We find that its slope is similar to…