학술논문
Superluminous supernovae from the Dark Energy Survey
Document Type
article
Author
Angus, CR; Smith, M; Sullivan, M; Inserra, C; Wiseman, P; D’Andrea, CB; Thomas, BP; Nichol, RC; Galbany, L; Childress, M; Asorey, J; Brown, PJ; Casas, R; Castander, FJ; Curtin, C; Frohmaier, C; Glazebrook, K; Gruen, D; Gutierrez, C; Kessler, R; Kim, AG; Lidman, C; Macaulay, E; Nugent, P; Pursiainen, M; Sako, M; Soares-Santos, M; Thomas, RC; Abbott, TMC; Avila, S; Bertin, E; Brooks, D; Buckley-Geer, E; Burke, DL; Carnero Rosell, A; Carretero, J; da Costa, LN; de Vicente, J; Desai, S; Diehl, HT; Doel, P; Eifler, TF; Flaugher, B; Fosalba, P; Frieman, J; García-Bellido, J; Gruendl, RA; Gschwend, J; Hartley, WG; Hollowood, DL; Honscheid, K; Hoyle, B; James, DJ; Kuehn, K; Kuropatkin, N; Lahav, O; Lima, M; Maia, MAG; March, M; Marshall, JL; Menanteau, F; Miller, CJ; Miquel, R; Ogando, RLC; Plazas, AA; Romer, AK; Sanchez, E; Schindler, R; Schubnell, M; Sobreira, F; Suchyta, E; Swanson, MEC; Tarle, G; Thomas, D; Tucker, DL
Source
Monthly Notices of the Royal Astronomical Society. 487(2)
Subject
Language
Abstract
We present a sample of 21 hydrogen-free superluminous supernovae (SLSNe-I) and one hydrogen-rich SLSN (SLSN-II) detected during the five-year Dark Energy Survey (DES). These SNe, located in the redshift range 0.220 < z < 1.998, represent the largest homogeneously selected sample of SLSN events at high redshift. We present the observed g, r, i, z light curves for these SNe, which we interpolate using Gaussian processes. The resulting light curves are analysed to determine the luminosity function of SLSNe-I, and their evolutionary timescales. The DES SLSN-I sample significantly broadens the distribution of SLSN-I light-curve properties when combined with existing samples from the literature. We fit a magnetar model to our SLSNe, and find that this model alone is unable to replicate the behaviour of many of the bolometric light curves. We search the DES SLSN-I light curves for the presence of initial peaks prior to the main light-curve peak. Using a shock breakout model, our Monte Carlo search finds that 3 of our 14 events with pre-max data display such initial peaks. However, 10 events show no evidence for such peaks, in some cases down to an absolute magnitude of