Continuously-fed fireballs and signatures in gamma-ray burst afterglows

Details Continuously-fed fireballs and signatures in gamma-ray burst afterglows Continuously-fed fireballs and signatures in gamma-ray burst afterglows

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..587..195z&link_type=abstract

GAMMA 2001: Gamma-Ray Astrophysics 2001. AIP Conference Proceedings, Volume 587, pp. 195-199 (2001).

Astronomy and Astrophysics

Astrophysics

Gamma-Ray Sources, Gamma-Ray Bursts, Pulsars

Scientific paper

In some types of the gamma-ray burst central engines, a significant energy input into the fireballs may in principle continue for a longer time scale and pose important impacts on afterglow emissions. If the injection is Poynting-flux-dominated rather than kinetic-energy-dominated, the accumulation of the fireball energy may change the global blastwave dynamics, which brings an achromatic bumping signature in the afterglow lightcurves. We discuss the condition of such a signature. A millisecond magnetar pulsar as the central engine is discussed in detail as an example. .

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