Work

TYPE IIP SUPERNOVA 2009kf: EXPLOSION DRIVEN BY BLACK HOLE ACCRETION?

Year: 2010

Type: article

Abstract: The unusually bright type IIP supernova (SN) 2009kf is studied employing hydrodynamic modeling. We derived optimal values of the ejecta mass of 28.1 M ☉ , explosion energy of 2.2 × 10 52 erg, and presupernova radius of 2 × 10 3 R ☉ assuming that 56 Ni mass is equal to the upper limit of 0.4 M ☉ . We analyzed effects of the uncertainties in the extinction and 56 Ni mass and concluded that both the ejecta mass and explosion energy cannot be significantly reduced compared with the optimal values. The huge explosion energy of SN 2009kf indicates that the explosion is caused by the same mechanism which operates in energetic SNe Ibc (hypernovae), i.e., via a rapid disk accretion onto black hole. The ejecta mass combined with the black hole mass and the mass lost by stellar wind yields the progenitor mass of about 36 M ☉ . We propose a scenario in which massive binary evolution might result in the SN 2009kf event.

Source: The Astrophysical Journal Letters

DOI: 10.1088/2041-8205/723/1/l89

Authors: V. P. Utrobin, N. N. Chugai, M. T. Botticella

Institutions: Max Planck Institute for Astrophysics, Institute for Theoretical and Experimental Physics, Institute of Astronomy, Queen's University Belfast

Language: English

Topic: Gamma-ray bursts and supernovae

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: European Science Foundation, Russian Foundation for Basic Research

Award: G2180018440