A tight correlation for GRB afterglows with ``canonical'' light curves

Details A tight correlation for GRB afterglows with ``canonical'' light curves A tight correlation for GRB afterglows with ``canonical'' light curves

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aipc.1358..113d&link_type=abstract

GAMMA RAY BURSTS 2010. AIP Conference Proceedings, Volume 1358, pp. 113-116 (2011).

Mathematics

Logic

Gamma-Ray Sources (Astronomical), Redshift, Afterglows, Telescopes, Gamma-Ray Sources, Gamma-Ray Bursts, Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies, Plasma Reactions, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

Gamma -ray bursts (GRBs) observed up to redshifts z>8 are fascinating objects to study due to their still unexplained relativistic outburst mechanisms and a possible use to test cosmological models. Our analysis of 77 GRB afterglows with known redshifts revealed a physical subsample of long GRBs with canonical plateau breaking to power-law light curves with a significant luminosity LX*-break time Ta* correlation in the GRB rest frame. This subsample forms approximately the upper envelope of the studied distribution. It proves that within the full sample of afterglows there exist physical subclasses revealed here by tight correlations of their afterglow properties. The afterglows with regular (``canonical'') light curves obey not only a mentioned tight physical scaling, but -for a given Ta*--the more regular progenitor explosions occur, the brighter afterglows result.

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