Angus, CR;
Smith, M;
Sullivan, M;
Inserra, C;
Wiseman, P;
D'Andrea, CB;
Thomas, BP;
... Tucker, DL; + view all
(2019)
Superluminous supernovae from the Dark Energy Survey.
Monthly Notices of the Royal Astronomical Society
, 487
(2)
pp. 2215-2241.
10.1093/mnras/stz1321.
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Abstract
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 time-scales. 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 <−16, suggesting that such features are not ubiquitous to all SLSN-I events. We also identify a red pre-peak feature within the light curve of one SLSN, which is comparable to that observed within SN2018bsz.
| Type: | Article |
|---|---|
| Title: | Superluminous supernovae from the Dark Energy Survey |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1093/mnras/stz1321 |
| Publisher version: | https://doi.org/10.1093/mnras/stz1321 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | supernovae: general |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10079041 |
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