Clues to the Nature of Massive Star Explosions from GRB X-ray afterglows

Details Clues to the Nature of Massive Star Explosions from GRB X-ray afterglows Clues to the Nature of Massive Star Explosions from GRB X-ray afterglows

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aipc..937..516b&link_type=abstract

SUPERNOVA 1987A: 20 YEARS AFTER: Supernovae and Gamma-Ray Bursters. AIP Conference Proceedings, Volume 937, pp. 516-520 (2007).

Physics

Gamma-Ray Sources, Gamma-Ray Bursts, X-Ray, X- And Gamma-Ray Telescopes And Instrumentation

Scientific paper

X-ray afterglows of long gamma-ray bursts (GRBs) provide some insights into the details of massive star explosions. Clues to the nature of the progenitors can be found from the ``canonical'' phases of X-ray afterglows, including the initial steeply falling phase seen in many X-ray afterglows, the flat ``plateau'' phase, and the X-ray flares. The data point to extended central engine activity lasting much longer than the duration of the prompt gamma-ray emission, possibly indicating that the stellar collapse is protracted by fall-back of material for many hours after the explosion.

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