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Properties of magnetars mimicking 56Ni-powered light curves in Type Ic superluminous supernovae
Takashi J. Moriya, Ting-Wan Chen, Norbert Langer
Many Type Ic superluminous supernovae have light-curve decline rates after their luminosity peak which are close to the nuclear decay rate of 56Co, consistent with the interpretati…
IRAS 18153-1651: an H II region with a possible wind bubble blown by a young main-sequence B star
V. V. Gvaramadze, J. Mackey, A. Y. Kniazev +5
We report the results of spectroscopic observations and numerical modelling of the H II region IRAS 18153-1651. Our study was motivated by the discovery of an optical arc and two m…
Light-curve and spectral properties of ultra-stripped core-collapse supernovae leading to binary neutron stars
Takashi J. Moriya, Paolo A. Mazzali, Nozomu Tominaga +7
We investigate light-curve and spectral properties of ultra-stripped core-collapse supernovae. Ultra-stripped supernovae are the explosions of heavily stripped massive stars which…
The metallicity dependence of envelope inflation in massive stars
D. Sanyal, N. Langer, D. Szécsi +2
Recently it has been found that models of massive stars reach the Eddington limit in their interior, which leads to dilute extended envelopes. We perform a comparative study of the…
Gamma-ray burst progenitors
Andrew Levan, Paul Crowther, Richard de Grijs +3
We review our current understanding of the progenitors of both long and short duration gamma-ray bursts (GRBs). Constraints can be derived from multiple directions, and we use thre…
Common envelope ejection in massive binary stars - Implications for the progenitors of GW150914 and GW151226
M. U. Kruckow, T. M. Tauris, N. Langer +3
The recently detected gravitational wave signals (GW150914 and GW151226) of the merger event of a pair of relatively massive stellar-mass black holes (BHs) calls for an investigati…