Francesca Onori: Feeding a Black Hole with a star: Tidal Disruption Events in the LSST era скачать в хорошем качестве

Francesca Onori: Feeding a Black Hole with a star: Tidal Disruption Events in the LSST era

When an unfortunate star wanders too close to a Super Massive Black Hole (SMBH) it can be destroyed by the strong tidal forces at play. These Tidal Disruption Events (TDE) are powerful transient sources which reveal the presence of dormant SMBHs in the low-mass regime and represent an extraordinary laboratory for studying the properties of SMBHs and the accretion-related phenomena on human-friendly time-scales. TDEs are exquisite multimessenger transients, being bright in different bands (from X-rays to radio), candidates sources of high-energy neutrinos and gravitational wave sources potentially detectable by future space-based interferometers (such as LISA and LGWA). In the last decade, thanks to the development of powerful wide-field surveys dedicated to the search of transients, the TDEs detection rate has quickly grown from few candidates serendipitously discovered to 10 TDE/yr, revealing an intriguing and puzzling diversity in the observational properties. Despite the impressive progress in this field, there are many aspects that remain unclear, such as the emission mechanism behind all the observed features and the geometry of the emitting region. The start of the Rubin Observatory’s Legacy Survey of Space and Time (LSST) survey operations will bring the TDE science to a new and unprecedented era, with an expected impressive discovery rate of 10 TDE/day and the possibility to detect the fast and faint ones, which could involve IMBHs. This talk presents the recent achievements in the TDE science, obtained thanks to the progress in candidate selection, classification and follow-up strategies. Some recent peculiar cases are shown which are interesting in the framework of interesting candidate selection, TDE rates and host environments.