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- W2931584328 abstract "The process of tidal disruption of stars by a supermassive black hole provides luminous UV and soft X-ray flares with peak luminosities of ≈1046 erg s−1 and duration of a few months. As part of a wider exploration of the effects of stellar rotation on the outcome of a TDE, we have performed hydrodynamical simulations of the disruption of a rotating star whose spin axis is opposite to the orbital axis. Such a retrograde rotation makes the star more resilient to tidal disruption, so that, even if its orbit reaches the formal tidal radius, it actually stays intact after the tidal encounter. However, the outer layers of the star are initially stripped away from the core, but then fall back on to the star itself, producing a newly formed accretion disc around the star. We estimate that the accretion rate on to the star would be strongly super-Eddington (for the star) and would result in an X-ray flare with luminosity of the order of ≈1040 erg s−1 and duration of a few months. We speculate that such events might be responsible for the known X-ray flares from Sgr A* in the recent past." @default.
- W2931584328 created "2019-04-11" @default.
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- W2931584328 date "2019-04-05" @default.
- W2931584328 modified "2023-09-27" @default.
- W2931584328 title "‘Failed’ tidal disruption events and X-ray flares from the Galactic Centre" @default.
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- W2931584328 doi "https://doi.org/10.1093/mnras/stz981" @default.
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