Publications details

This section collects scientific and technical publications using data from the Sardinia Radio Telescope (SRT) and papers describing the instrumentation, capabilities, and performance of the facility. These peer‑reviewed articles emphasize the scientific impact and engineering developments enabled by the SRT, highlighting its contribution to radio astronomy.

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The 999th Swift gamma-ray burst: Some like it thermal. A multiwavelength study of GRB 151027A (3)

Authors: F. Nappo, A. Pescalli, G. Oganesyan, G. Ghirlanda, M. Giroletti, A. Melandri, S. Campana, G. Ghisellini, O. S. Salafia, P. D’Avanzo, M. G. Bernardini, S. Covino, E. Carretti, A. Celotti, V. D’Elia, L. Nava, E. Palazzi, S. Poppi, I. Prandoni, S. Righini, A. Rossi, R. Salvaterra, G. Tagliaferri, V. Testa, T. Venturi, and S. D. Vergani
Astronomy

We present a multiwavelength study of GRB 151027A. This is the 999th gamma-ray burst detected by the Swift satellite and it has a densely sampled emission in the X-ray and optical band and has been observed and detected in the radio up to 140 days after the prompt. The multiwavelength light curve from 500 s to 140 days can be modelled through a standard forward shock afterglow, but it requires an additional emission component to reproduce the early X-ray and optical emission. Radio observations, performed with the Sardinia Radio Telescope (SRT) and Medicina in single-dish mode and with the European Very Long Baseline Interferometer (VLBI) Network and the Very Long Baseline Array (VLBA), between day 4 and 140 suggest that the burst exploded in an environment characterized by a density profile scaling with the distance from the source (wind profile).

Published in Astronomy & Astrophysics, Volume 598, id.A23, 17 pp.