SIMBAD references

1999A&AS..138..451G - Astron. Astrophys., Suppl. Ser., 138, 451-452 (1999/September-0)

Physical parameters of GRB 970508 from its afterglow synchrotron emission.

GALAMA T.J., WIJERS R.A.M.J., VREESWIJK P.M., GROOT P.J., VAN PARADIJS J., KOUVELIOTOU C., ROBINSON C., BREMER M., STROM R.G. and TANVIR N.

Abstract (from CDS):

For the case of an adiabatically expanding blast wave, which is applicable to observed gamma-ray burst (GRB) afterglows at late times, we give expressions to infer the physical properties of the afterglow from the measured spectral features. We show that enough data exist for GRB 970508 to compute unambiguously the ambient density, n=0.03cm–3, and the blast wave energy per unit solid angle, E=4x1052erg/4πsr. We also compute the energy density in electrons and magnetic field. We find that they are 12% and 9%, respectively, of the nucleon energy density.

Abstract Copyright: ∼

Journal keyword(s): gamma-rays: bursts - radiation mechanisms: non-thermal

Simbad objects: 1

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