The Superluminous (Type I) Supernova ASASSN-15lh : A case for a Quark-Nova inside an Oxygen-type Wolf-Rayet supernova remnant

Abstract

We show that a Quark-Nova (QN; the explosive transition of a neutron star to a quark star) occurring a few days following the supernova explosion of an Oxygen-type Wolf-Rayet (WO) star can account for the intriguing features of ASASSN-15lh, including its extreme energetics, its double-peaked light-curve and the evolution of its photospheric radius and temperature. A two-component configuration of the homologously expanding WO remnant (an extended envelope and a compact core) is used to harness the kinetic energy (>10^52 ergs) of the QN ejecta. The delay between the WO SN and the QN yields a large (~ 10^4 Rsun) envelope which when energized by the QN ejecta/shock gives the first peak in our model. As the envelope's photosphere recedes into the slowly expanding, hot and insulated, denser core (initially heated by the QN shock) a second hump emerges. The spectrum in our model should reflect the composition of an WO SN remnant re-heated by a QN going off in its wake.

arXiv comment5 pages, 2 figures, 1 table

References in corpus (5)

• The Superluminous Transient ASASSN-15lh as a Tidal Disruption Event from a Kerr Black Hole
• A Triple-Energy-Source Model for Superluminous Supernova iPTF13ehe
• Predictions for signatures of the quark-nova in superluminous supernovae
• Explosive Combustion of a Neutron Star into a Quark Star: the non-premixed scenario
• A Hydrodynamical Study on the Conversion of Hadronic Matter to Quark Matter: I. Shock-Induced Conversion