Multiple tidal disruption flares in the active galaxy IC 3599
作者： S. Campana , D. Mainetti , M. Colpi , G. Lodato , P. D’Avanzo
DOI: 10.1051/0004-6361/201525965
关键词: Tidal force 、 Black hole 、 Physics 、 Tidal disruption event 、 Astrophysics 、 Orbital eccentricity 、 Astronomy 、 Intergalactic star 、 Orbital period 、 Active galactic nucleus 、 Galaxy
摘要: Tidal disruption events occur when a star passes too close to massive black hole and it is totally ripped apart by tidal forces. It may also happen that the not enough be disrupted less dramatic event might happen. If stellar orbit bound highly eccentric, just like some stars in centre of our own Galaxy, repeated flares should occur. When approaches radius at periastron, matter stripped resulting lower intensity outbursts recurring once every orbital period. We report on Swift observations recent bright flare from galaxy IC 3599 hosting middle-weight hole, where possible was observed early 1990s. By light curve modelling spectral fitting we can consistently account for as non-disruptive stripping into eccentric orbit. The recurrence time 9.5 yr. known host low-luminosity active galactic nucleus. this over several passages able spoon-feed activity.
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