First tidal disruption events discovered by SRG/eROSITA: X-ray/optical properties and X-ray luminosity function at z < 0.6 [PDF]
Monthly notices of the Royal Astronomical Society, 2021 We present the first sample of tidal disruption events (TDEs) discovered during the SRG all-sky survey. These 13 events were selected among X-ray transients detected in the 0 < l < 180○ hemisphere by eROSITA during its second sky survey (10 June–14 ...
S. Sazonov +24 more
semanticscholar +1 more source
Possible X-Ray Quasi-periodic Eruptions in a Tidal Disruption Event Candidate [PDF]
Astrophysical Journal Letters, 2021 X-ray quasi-periodic eruptions (QPEs) are a recently discovered phenomenon associated with supermassive black holes at the centers of galaxies. They are high-amplitude soft X-ray flares that recur on timescales of hours, but what causes these flares ...
J. Chakraborty +5 more
semanticscholar +1 more source
Live to Die Another Day: The Rebrightening of AT 2018fyk as a Repeating Partial Tidal Disruption Event [PDF]
Astrophysical Journal Letters, 2022 Stars that interact with supermassive black holes (SMBHs) can be either completely or partially destroyed by tides. In a partial tidal disruption event (TDE), the high-density core of the star remains intact, and the low-density outer envelope of the ...
T. Wevers +15 more
semanticscholar +1 more source
Dynamical Unification of Tidal Disruption Events [PDF]
Astrophysical Journal Letters, 2022 The ∼100 tidal disruption events (TDEs) observed so far exhibit a wide range of emission properties both at peak and over their lifetimes. Some TDEs radiate predominantly at X-ray energies, while others radiate chiefly at UV and optical wavelengths ...
L. Thomsen +5 more
semanticscholar +1 more source
Extremely Relativistic Tidal Disruption Events
The Astrophysical Journal Letters, 2023 Abstract Extreme tidal disruption events (eTDEs), which occur when a star passes very close to a supermassive black hole, may provide a way to observe a long-sought general relativistic effect: orbits that wind several times around a black hole and then leave.
Taeho Ryu, Julian Krolik, Tsvi Piran
openaire +4 more sources
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
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
Challenges in the modeling of tidal disruption events lightcurves [PDF]
, 2012 In this contribution, I review the recent developments on the modeling of the lightcurve of tidal disruption events. Our understanding has evolved significantly from the earlier seminal results that imply a simple power-law decay of the bolometric light ...
Lodato G., G. Lodato
core +1 more source
Interpretation of the Observed Neutrino Emission from Three Tidal Disruption Events [PDF]
Astrophysical Journal, 2022 Three Tidal Disruption Event candidates (AT2019dsg, AT2019fdr, and AT2019aalc) have been associated with high-energy astrophysical neutrinos in multimessenger follow-ups.
W. Winter, C. Lunardini
semanticscholar +1 more source