Simulations of light curves and spectra for superluminous Type Ic supernovae powered by magnetars

Abstract

Numerous superluminous supernovae (SLSNe) of Type Ic have been discovered and monitored in the last decade. The favored mechanism at their origin is a sustained power injection from a magnetar. This study presents non-local thermodynamic equilibrium time-dependent radiative transfer simulations of various single carbon-rich Wolf-Rayet star explosions influenced by magnetars of diverse properties and covering from a few days to one or two years after explosion. Nonthermal processes are treated; the magnetar-power deposition profile is prescribed; dynamical effects are ignored. In this context, the main influence of the magnetar power is to boost the internal energy of the ejecta on week-long time scales, enhancing the ejecta temperature and ionization, shifting the spectral energy distribution to the near-UV (even for the adopted solar metallicity), creating blue optical colors. Varying the ejecta and magnetar properties introduces various stretches and shifts to the light curve (rise time, peak or nebular luminosity, light curve width). At maximum, all models show the presence of OII and CII lines in the optical, and more rarely OIII and CIII lines. Non-thermal effects are found to be negligible during the high-brightness phase. After maximum, higher energy explosions are hotter and more ionized, and produce spectra that are optically bluer. Clumping is a source of spectral diversity after maximum. Clumping is essential to trigger ejecta recombination and yield the presence of OI, CaII, and FeII lines from a few weeks after maximum until nebular times. The UV and optical spectrum of Gaia16apd at maximum or the nebular spectrum of LSQ14an at +410d are compatible with some models that assume no clumping. However, most observed SLSNe Ic seem to require clumping from early post-maximum to nebular times (e.g., SN2007bi at +46 and +367d; Gaia16apd at +43d).

Accepted for publication in A&A

References in corpus (24)

• Confined Dense Circumstellar Material Surrounding a Regular Type II Supernova: The Unique Flash-Spectroscopy Event of SN 2013fs
• A Wolf-Rayet-like progenitor of supernova SN 2013cu from spectral observations of a wind
• Three-dimensional core-collapse supernova simulated using a 15 $M_{\odot }$ progenitor
• Three-Dimensional Simulations of Core-Collapse Supernovae: From Shock Revival to Shock Breakout
• The magnetar model for Type I superluminous supernovae I: Bayesian analysis of the full multicolour light curve sample with MOSFiT
• Exploring Fundamentally Three-dimensional Phenomena in High-fidelity Simulations of Core-collapse Supernovae
• Spectroscopy of superluminous supernova host galaxies. A preference of hydrogen-poor events for extreme emission line galaxies
• The Unique Type Ib Supernova 2005bf at Nebular Phases: A Possible Birth Event of A Strongly Magnetized Neutron Star
• A Successful 3D Core-Collapse Supernova Explosion Model
• The different progenitors of type Ib, Ic SNe, and of GRB
• Using Quantitative Spectroscopic Analysis to Determine the Properties and Distances of Type II-Plateau Supernovae: SNe 2005cs and 2006bp
• Energetic eruptions leading to a peculiar hydrogen-rich explosion of a massive star
• SN 2006bp: Probing the Shock Breakout of a Type II-P Supernova
• Hydrogen-Poor Superluminous Supernovae from the Pan-STARRS1 Medium Deep Survey
• Superluminous supernova 2015bn in the nebular phase: evidence for the engine-powered explosion of a stripped massive star
• Early-time spectra of supernovae and their precursor winds: the luminous blue variable/yellow hypergiant progenitor of SN 2013cu
• Supernova ejecta with a relativistic wind from a central compact object: a unified picture for extraordinary supernovae
• A nearby superluminous supernova with a long pre-maximum 'plateau' and strong CII features
• One thousand days of SN 2015bn: HST imaging shows a light curve flattening consistent with magnetar predictions
• A magnetar model for the hydrogen-rich super-luminous supernova iPTF14hls
• Impact of clumping on core-collapse supernova radiation
• Super-luminous Type II supernovae powered by magnetars
• A systematic study of magnetar-powered hydrogen-rich supernovae
• Ultraviolet light curves of Gaia16apd in superluminous supernova models

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