Optical-Ultraviolet Tidal Disruption Events
نویسندگان
چکیده
منابع مشابه
Revisiting Optical Tidal Disruption Events with iPTF16axa
We report the discovery by the intermediate Palomar Transient Factory (iPTF) of a candidate tidal disruption event (TDE) iPTF16axa at z = 0.108, and present its broadband photometric and spectroscopic evolution from 3 months of follow-up observations with ground-based telescopes and Swift. The light curve is well fitted with a t decay, and we constrain the rise-time to peak to be <49 rest-frame...
متن کاملAN ULTRAVIOLET SPECTRUM OF THE TIDAL DISRUPTION FLARE ASASSN-14li
We present a Hubble Space Telescope Space Telescope Imaging Spectrograph spectrum of ASASSN-14li, the first rest-frame ultraviolet (UV) spectrum of a tidal disruption flare (TDF). The underlying continuum is well fit by a blackbody with T 3.5 10 UV 4 = ́ K, an order of magnitude smaller than the temperature inferred from X-ray spectra (and significantly more precise than previous efforts based ...
متن کاملEvolution of Thick Accretion Disks Produced by Tidal Disruption Events
Geometrically thick disks may form after tidal disruption events, and rapid accretion may lead to short flares followed by long-term, lower-level emission. Using a novel accretion disk code which relies primarily on global conservation laws and the assumption that viscosity is everywhere positive, a broad range of physically allowed evolutionary sequences of thick disks is investigated. The mai...
متن کاملThe γ-ray afterglows of tidal disruption events
A star wandering too close to a supermassive black hole (SMBH) will be tidally disrupted. Previous studies of such 'tidal disruption event' (TDE) mostly focus on the stellar debris that are bound to the system, because they give rise to luminous flares. On the other hand, half of the stellar debris in principle are unbound and can stream to a great distance, but so far there is no clear evidenc...
متن کاملA Deep Optical Luminosity Function of NGC 6712 with the VLT: Evidence for Severe Tidal Disruption⋆
The VLT on Cerro Paranal was used to observe four fields located at ∼ 2.3 from the center of the Galactic globular cluster NGC6712 in the V and R bands. The resulting color-magnitude diagram shows a well defined main sequence reaching down to the 5 σ detection limit at V ≃ 25, R ≃ 23.5 or approximately 4 magnitudes below the main sequence turn-off, the deepest obtained so far on this cluster. T...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Space Science Reviews
سال: 2020
ISSN: 0038-6308,1572-9672
DOI: 10.1007/s11214-020-00753-z