five

16775

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DataCite Commons2023-04-21 更新2025-04-15 收录
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http://esdcdoi.esac.esa.int/doi/html/data/astronomy/hst/16775.html
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When a star is tidally disrupted by a supermassive black hole comma the rapid accretion of the stellar debris may drive super-Eddington winds which. After a period of accretion rate decay comma we expect the winds to d_commashut offd_comma comma drastically reducing the production of broad line emission and changing the evolution of the band-specific light curve across the spectrum. Spectroscopic monitoring of new tidal disruption events (TDEs) in the ultraviolet is the best place to observe this transition due to the persistence of a windless disk continuum. the lack of stellar contamination comma and the wealth of high-ionization diagnostic lines that probe the relatively small TDE accretion structure. We propose to observe 5 TDEs over 3 epochs with monitoring UV spectroscopy and complementary X-ray and optical observations comma in order to observe this transition and investigate its connection to the evolution of the accretion flow. Beyond this primary goal comma these observations will also provide an important legacy contribution of HST towards understanding TDE physics in the UV.
提供机构:
European Space Agency
创建时间:
2023-04-21
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