[Okc-wp4] EO meeting on the 24th of November

[Haakon Andresen]

Dear everyone,


The next EO meeting will take place in the MEGA room on the 24th of November.


Looking forward  to see you all next week!

Kind regards,
Ana Sagués Carracedo & Haakon Andresen



When: 27th of November, 13:15

Where: MEGA


Speaker: Rodrigo Fernandez

Title: Mass ejection in non-rotating failed supernovae

Abstract:
The core-collapse of a slowly-rotating massive star that fails to  explode results in the formation of a black hole (BH). Below the  pair-instability threshold, a protoneutron star phase always precedes BH  formation, with a corresponding reduction in the total gravitational mass due to neutrino emission. The ensuing deviation from  hydrostatic equilibrium in the outer layers of the star results in the  ejection of a small amount of mass with much lower energies than in  successful supernovae. The mass and velocity of the ejecta depend on properties of the core and envelope of the  progenitor. I'll discuss an exploration of this mechanism over a wide  range of stellar progenitors using spherically-symmetric hydrodynamic  simulations, focusing on the effect of the dense-matter equation of state and spatial resolution on the ejecta properties,  expected electromagnetic counterparts, and upper limits to the mass of  the BH remnant.

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