Abstract
We performed accurate numerical calculations of angle-, time-, and frequency-dependent radiative transfer for the relativistic motion of matter in gamma-ray burst (GRB) models. Our technique for solving the transfer equation, which is based on the method of characteristics, can be applied to the motion of matter with a Lorentz factor up to 1000. The effect of synchrotron self-absorption is taken into account. We computed the spectra and light curves from electrons with a power-law energy distribution in an expanding relativistic shock and compare them with available analytic estimates. The behavior of the optical afterglows from GRB 990510 and GRB 000301c is discussed qualitatively.
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Translated from Pis’ma v Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Zhurnal, Vol. 29, No. 6, 2003, pp. 403–411.
Original Russian Text Copyright © 2003 by Tolstov, Blinnikov.
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Tolstov, A.G., Blinnikov, S.I. Spectra and light curves of GRB afterglows. Astron. Lett. 29, 353–360 (2003). https://doi.org/10.1134/1.1579780
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DOI: https://doi.org/10.1134/1.1579780