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Observational signatures of the surviving donor star in the double detonation model of Type Ia supernovae
Zheng-Wei Liu, Friedrich K. Roepke, Yaotian Zeng +1
The sub-Chandrasekhar mass double-detonation (DDet) scenario is a contemporary model for SNe Ia. The donor star in the DDet scenario is expected to survive the explosion and to be…
Advancement of Photospheric Radius Expansion and Clocked Type-I X-Ray Burst Models with the New MgAl Reaction Rate Determined at Gamow Energy
J. Hu, H. Yamaguchi, Y. H. Lam +34
We report the first (in)elastic scattering measurement of with the capability to select and measure in a broad energy range the proton resonances in Si…
X-ray burst ignition location on the surface of accreting X-ray pulsars: Can bursts preferentially ignite at the hotspot?
A. J. Goodwin, A. Heger, F. R. N. Chambers +2
Hotspots on the surface of accreting neutron stars have been directly observed via pulsations in the lightcurves of X-ray pulsars. They are thought to occur due to magnetic channel…
The Pair-Instability Mass Gap for Black Holes
S. E. Woosley, Alexander Heger
Stellar evolution theory predicts a "gap" in the black hole birth function caused by the pair instability. Presupernova stars that have a core mass below some limiting value, Mlo,…
The final core collapse of pulsational pair instability supernovae
Jade Powell, Bernhard Müller, Alexander Heger
We present 3D core-collapse supernova simulations of massive Pop-III progenitor stars at the transition to the pulsational pair instability regime. We simulate two progenitor model…
On the Evolution of Supermassive Primordial Stars in Cosmological Flows
Tyrone E. Woods, Samuel Patrick, Jacob S. Elford +2
Primordial supermassive stars (SMSs) formed in atomic-cooling halos at z ~ 15 - 20 are leading candidates for the seeds of the first quasars. Past numerical studies of the evolutio…