RT journal article
T1 Detailed spectrophotometric analysis of the superluminous and fast evolving SN 2019neq
A1 Fiore, Achille
A1 Benetti, Stefano
A1 Tartaglia, Leonardo
A1 Jerkstrand, Anders
A1 Salmaso, Irene
A1 Tomasella, Lina
A1 Morales Garoffolo, Antonia Isabel
A1 Geier, Stefan
A1 Elias-Rosa, Nancy
A1 Cappellaro, Enrico
A1 Wang, Xiaofeng
A1 Mo, Jun
A1 Chen, Zhihao
A1 Yan, Shengyu
A1 Pastorello, Andrea
A1 Mazzali, Paolo A.
A1 Ciolfi, Riccardo
A1 Cai, Yongzhi
A1 Fraser, Morgan
A1 Gutiérrez, Claudia P.
A1 Karamehmetoglu, Emir
A1 Kuncarayakti, Hanindyo
A1 Moran, Shane
A1 Ochner, Paolo
A1 Reguitti, Andrea
A1 Reynolds, T. M.
A1 Valerin, Giorgio
A2 Física Aplicada
K1 supernovae
K1 general –supernovae
K1 individual
K1 SN 2019neq
AB SN 2019neq was a very fast evolving superluminous supernova. At a redshift z = 0.1059, its peak absolute magnitude was -21.5 ± 0.2 mag in g band. In this work, we present data and analysis from an extensive spectrophotometric follow-up campaign using multiple observational facilities. Thanks to a nebular spectrum of SN 2019neq, we investigated some of the properties of the host galaxy at the location of SN 2019neq and found that its metallicity and specific star formation rate are in a good agreement with those usually measured for SLSNe-I hosts. We then discuss the plausibility of the magnetar and the circumstellar interaction scenarios to explain the observed light curves, and interpret a nebular spectrum of SN 2019neq using published sumo radiative-transfer models. The results of our analysis suggest that the spin-down radiation of a millisecond magnetar with a magnetic field could boost the luminosity of SN 2019neq.
PB Oxford University Press
SN 1365-2966
YR 2024
FD 2024
LK http://hdl.handle.net/10498/31753
UL http://hdl.handle.net/10498/31753
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 13-nov-2026