Year: 2006
Type: article
Abstract: We report observations of GRB 050525A, for which a Gemini North spectrum shows its redshift to be z = 0.606. This is the third closest long GRB discovered by Swift . We observed its afterglow using the VLT, Gemini, and TNG telescopes to search for an associated supernova. We find that the early-time light curve is described by a broken power law with a break at t ~ 0.3 days after the burst. About 5 days after the burst, a flattening is apparent, followed by a further dimming. Both the magnitude and the shape of the light curve suggest that a supernova was emerging during the late decay of the afterglow. This supernova, named SN 2005nc, had a rise time faster than SN 1998bw and a long-lasting maximum. A spectrum obtained about 20 days (rest frame) after the GRB resembles the spectrum of SN 1998bw obtained close to maximum light.
Source: The Astrophysical Journal
DOI: 10.1086/504636
Authors: M. Della Valle, D. Malesani, J. S. Bloom, S. Benetti, G. Chincarini, P. D'Avanzo, R. J. Foley, S. Covino, A. Melandri, S. Piranomonte, G. Tagliaferri, L. Stella, R. Gilmozzi, L. A. Antonelli, S. Campana, H.-W. Chen, P. Filliatre, F. Fiore, D. Fugazza, N. Gehrels, K. Hurley, I. F. Mirabel, L. J. Pellizza, L. Piro, J. X. Prochaska
Institutions: University of California, Santa Barbara, Arcetri Astrophysical Observatory, Kavli Institute for Theoretical Physics, National Institute for Astrophysics, Scuola Internazionale Superiore di Studi Avanzati, University of California, Berkeley, Osservatorio Astronomico di Padova, Brera Astronomical Observatory, University of Milano-Bicocca, University of Insubria, Astronomical Observatory of Rome, Liverpool John Moores University, European Southern Observatory, Massachusetts Institute of Technology, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Laboratoire AstroParticule et Cosmologie, CEA Paris-Saclay, Goddard Space Flight Center, Space Sciences Laboratory, European Southern Observatory, Centre National de la Recherche Scientifique, Astrophysique, Instrumentation et Modélisation, University of California, Santa Cruz
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W1995479725