Results 51 to 60 of about 1,284,561 (328)
Magnetically Dominated Disks in Tidal Disruption Events and Quasi-Periodic Eruptions [PDF]
Monthly notices of the Royal Astronomical Society, 2022 The classical radiation pressure instability has been a persistent theoretical feature of thin, radiatively efficient accretion disks with accretion rates $\sim 1 - 100\%$ of the Eddington rate.
Karamveer Kaur, N. Stone, Shmuel Gilbaum
semanticscholar +1 more source
The Tidal Disruption Event AT2021ehb: Evidence of Relativistic Disk Reflection, and Rapid Evolution of the Disk–Corona System [PDF]
Astrophysical Journal, 2022 We present X-ray, UV, optical, and radio observations of the nearby (≈78 Mpc) tidal disruption event AT2021ehb/ZTF21aanxhjv during its first 430 days of evolution.
Yuhan Yao +31 more
semanticscholar +1 more source
A Unified Model for Tidal Disruption Events [PDF]
The Astrophysical Journal Letters, 2018 Abstract In the past few years wide-field optical and UV transient surveys and X-ray telescopes have allowed us to identify a few dozen candidate tidal disruption events (TDEs). While in theory the physical processes in TDEs are ubiquitous, a few distinct classes of TDEs have been observed.
Lixin Dai +4 more
openaire +3 more sources
The Unluckiest Star: A Spectroscopically Confirmed Repeated Partial Tidal Disruption Event AT 2022dbl [PDF]
Astrophysical Journal LettersThe unluckiest star orbits a supermassive black hole elliptically. Every time it reaches the pericenter, it shallowly enters the tidal radius and gets partially tidally disrupted, producing a series of flares.
Zheyu Lin +15 more
semanticscholar +1 more source
Cooling Envelope Model for Tidal Disruption Events [PDF]
Astrophysical Journal Letters, 2022 We present a toy model for the thermal optical/UV/X-ray emission from tidal disruption events (TDEs). Motivated by recent hydrodynamical simulations, we assume that the debris streams promptly and rapidly circularize (on the orbital period of the most ...
B. Metzger
semanticscholar +1 more source
Tidal Disruptions of Main-sequence Stars. V. The Varieties of Disruptions [PDF]
The Astrophysical Journal, 2020 Abstract Tidal disruption events (TDEs) are generally imagined as the complete disruption of a star when it passes close to a supermassive black hole (SMBH). Relativistic apsidal precession is thought to quickly “circularize” the bound debris, forming a compact accretion disk, which then emits a flare of standardized light curve and ...
Julian Krolik, Tsvi Piran, Taeho Ryu
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Delayed radio flares from a tidal disruption event [PDF]
Nature Astronomy, 2021 Radio observations of tidal disruption events (TDEs)—when a star is tidally disrupted by a supermassive black hole (SMBH)—provide a unique laboratory for studying outflows in the vicinity of SMBHs and their connection to accretion onto the supermassive ...
A. Horesh, S. Cenko, I. Arcavi
semanticscholar +1 more source
DOUBLE TIDAL DISRUPTIONS IN GALACTIC NUCLEI [PDF]
The Astrophysical Journal, 2015 A star on a nearly radial trajectory approaching a massive black hole (MBH) gets tidally disrupted if it comes sufficiently close to the MBH. Here we explore what happens to binary stars whose centers of mass approach the MBH on nearly radial orbits. The interaction with the MBH often leads to both stars being disrupted in sequence.
Ilya Mandel, Yuri Levin
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Late-time Radio Flares in Tidal Disruption Events [PDF]
Astrophysical JournalRadio monitoring unveiled late (hundreds to a thousand days) radio flares in a significant fraction of tidal disruption events. We propose that these late-time radio flares are a natural outcome if the surrounding density profile flattens outside the ...
Tatsuya Matsumoto, T. Piran
semanticscholar +1 more source
The impact of tidal disruption events on galactic habitability [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACTTidal disruption events (TDEs) are characterized by the emission of a short burst of high-energy radiation. We analyse the cumulative impact of TDEs on galactic habitability using the Milky Way as a proxy. We show that X-rays and extreme ultraviolet radiation emitted during TDEs can cause hydrodynamic escape and instigate biological damage.
Pacetti, E +4 more
openaire +5 more sources