Origin of postmaximum bump in luminous type Ic SN 2019stc

Abstract

We address the issue of the postmaximum bump observed in the light curve of some superluminous supernovae. We rule out the popular mechanism of a circumstellar interaction suggested for the bump explanation. Instead we propose that the postmaximum bump is caused by the magnetar dipole field enhancement several months after the explosion. The modeling of SN 2019stc light curve based on the thin shell approximation implies that at the age of $\sim 90$ days the initial dipole magnetic field should be amplified by a factor of 2.8 to account for the postmaximum bump. The specific mechanism for the field amplification of the newborn magnetar on the timescale of several months has yet to be identified.

arXiv commentAccepted for MNRAS Letters

References in corpus (14)

• Supernova Light Curves Powered by Young Magnetars
• Bright Supernovae from Magnetar Birth
• The Most Luminous Supernovae
• The Unique Type Ib Supernova 2005bf at Nebular Phases: A Possible Birth Event of A Strongly Magnetized Neutron Star
• Ab-initio pulsar magnetosphere: three-dimensional particle-in-cell simulations of oblique pulsars
• Magnetar Driven Shock Breakout and Double Peaked Supernova Light Curves
• Hydrogen-poor Superluminous Supernovae With Late-time H-alpha Emission: Three Events From the Intermediate Palomar Transient Factory
• Magnetar formation through a convective dynamo in protoneutron stars
• Are pulsars born with a hidden magnetic field?
• The Luminous and Double-Peaked Type Ic Supernova 2019stc: Evidence for Multiple Energy Sources
• Helium-rich Superluminous Supernovae From the Zwicky Transient Facility
• Three-Dimensional Simulations of Magnetar-Powered Superluminous Supernovae
• Generating neutron-star magnetic fields: three dynamo phases
• The shear-Hall instability in newborn neutron stars

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