Tidal effects in the motion of gas clouds around boson stars

Abstract

We report simulations regarding tidal disruption clouds orbiting spherically symmetric compact boson stars in two different regimes. First we consider clouds in three different bound orbits close to the boson star and analyze the mechanisms of debris formation for these. We infer from the simulations that the lifetimes of these hot-spots are longer for circularly orbiting clouds than for clouds on eccentric orbits. Next we compare the evolution of more extended and less dense clouds on circular orbits around a boson star and a Schwarzschild black hole. As an outcome of the simulations we observe the formation of a ring-like structure around the boson star endowed with a spiralling shock structure and a constant thermal bremsstrahlung total luminosity. This final configuration contrasts strongly with the black hole scenario where the gas is totally captured behind the event horizon.

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Cited by in corpus (5)

• Circular Orbits Structure and Thin Accretion Disks around Kerr Black Holes with Scalar Hair
• Solitonic Boson Stars: Numerical solutions beyond the thin-wall approximation
• Magnetized Thick Disks around Boson Stars
• Tidal Disruption of Stars by Supermassive Black Holes and Naked Singularities with Scalar Hair
• The Resurgence of the G(2) Group for the Strong Sector and the Emergence of Dark Matter