Kozyreva, A and Hirschi, R and Blinnikov, S and Hartogh, JD (2016) How much radioactive nickel does ASASSN-15lh require? Monthly Notices of the Royal Astronomical Society, 459 (1). ISSN 1365-2966

[img]
Preview
Text
1603.00335v1.pdf - Published Version

Download (244kB) | Preview

Abstract

The discovery of the most luminous supernova ASASSN-15lh triggered a shock-wave in the supernova community. The three possible mechanisms proposed for the majority of other superluminous supernovae do not produce a realistic physical model for this particular supernova. In the present study we show the limiting luminosity available from a nickel-powered pair-instability supernova. We computed a few exotic nickel-powered explosions with a total mass of nickel up to 1500 solar masses. We used the hydrostatic configurations prepared with the GENEVA and MESA codes, and the STELLA radiative-transfer code for following the explosion of these models. We show that 1500 solar masses of radioactive nickel is needed to power a luminosity of 2x10^45 erg/s. The resulting light curve is very broad and incompatible with the shorter ASASSN-15lh time-scale. This rules out a nickel-powered origin of ASASSN-15lh. In addition, we derive a simple peak luminosity - nickel mass relation from our data, which may serve to estimate of nickel mass from observed peak luminosities.

Item Type: Article
Additional Information: This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
Uncontrolled Keywords: radiative transfer; stars:evolution; stars:massive; supernovae:general; supernovae:individual:ASASSN-15h
Subjects: Q Science > QB Astronomy
?? astro-ph.HE ??
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 23 Nov 2016 14:19
Last Modified: 23 Nov 2016 14:19
URI: http://eprints.keele.ac.uk/id/eprint/2523

Actions (login required)

View Item View Item