2009/09/30 by N. Marchili, I. Martí‐Vidal, I. Marti-Vidal +12 · 2 citations
Physics and Astronomy · #Astronomy #Astrophysics #Astrophysics and Cosmic Phenomena #Flare #Flux (metallurgy) #Galaxy #Gamma-ray bursts and supernovae #Light curve #Materials science #Physics #Pulsars and Gravitational Waves Research #Supernova #astro-ph.CO #astro-ph.HE
paper · pdf · doi:10.1051/0004-6361/200913126
7 pages, 3 figures. Accepted for publication in A & A
arxiv created 2009/09/30 · openalex publication_date 2009/11/12 · arxiv updated 2015/05/14 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/05
We report on a set of 5 GHz Urumqi observations of the galaxy M82, made between August 2005 and May 2009. From the resulting flux densities, we detect a strong flare, starting in March or April and peaking in June 2008. We identify this flare with supernova SN 2008iz. The time sampling of the radio light curve allows us to obtain information on the precursor mass-loss rate, the strength of the magnetic field in the radiating region, the explosion date, and the deceleration of the expanding shock. We also check the possible contribution of synchrotron self absorption to the radio light curve and compare our model with other observations of the supernova at 22 GHz.