Bonn 2020 – wissenschaftliches Programm

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GR: Fachverband Gravitation und Relativitätstheorie

GR 4: Other Topics in Gravitational Physics

GR 4.3: Vortrag

Montag, 30. März 2020, 17:45–18:00, H-HS IX

Accretion processes around boson stars — •Matheus do Carmo Teodoro1, Jutta Kunz1, and Lucas Collodel21Oldenburg universität — 2Tübingen universität

In this work we studied the behavior of ideal gas clouds near boson stars (BS). Being the later described by a complex field scalar theory coupled to general relativity, BS can have a wide set of configuration, ranging from very compact objects to extremely extensive ones, with masses that go from atomic scale to the order of supermassive black-holes. For this reason they are also candidates for Black Hole Mimickers and of particular astrophysical interest. On the other hand, these objects possess no hard surface nor event horizon, meaning that matter could pass through them. Tidal disruption events on these spacetimes would have then a peculiar nature. In order to approach this topic we have performed, using state-of-the-art numerical techniques accomplished by the Black Hole Accretion Code (BHAC), 2D fully relativistic simulations taking as initial condition spherical clouds at rest with a Gaussian distribution of density in hydrodynamic equilibrium with the atmosphere. Aiming to discuss the differences of such events around boson stars and black holes, we shall present the results from our simulations in this talk.

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