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- W3100525859 abstract "We report the discovery of transient radio emission from the nearby optically-discovered TDE ASASSN-14li (distance of 90 Mpc), making it the first typical TDE detected in the radio, and unambiguously pointing to the formation of a non-relativistic outflow with a kinetic energy of $approx (4-10)times10^{47}$ erg, a velocity of $approx 12,000-36,000$ km s$^{-1}$, and a mass of $approx 3times10^{-5}-7times10^{-4}$ M$_{odot}$. We show that the outflow was ejected on 2014 August 11--25, in agreement with an independent estimate of the timing of super-Eddington accretion based on the optical, UV, and X-ray observations, and that the ejected mass corresponds to about $1-10%$ of the mass accreted in the super-Eddington phase. The temporal evolution of the radio emission also uncovers the circumnuclear density profile, $rho(R)propto R^{-2.5}$ on a scale of about 0.01 pc, a scale that cannot be probed via direct measurements even in the nearest SMBHs. Our discovery of radio emission from the nearest well-studied TDE to date, with a radio luminosity lower than all previous limits, indicates that non-relativistic outflows are ubiquitous in TDEs, and that future, more sensitive, radio surveys will uncover similar events." @default.
- W3100525859 created "2020-11-23" @default.
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- W3100525859 date "2016-03-04" @default.
- W3100525859 modified "2023-10-16" @default.
- W3100525859 title "DISCOVERY OF AN OUTFLOW FROM RADIO OBSERVATIONS OF THE TIDAL DISRUPTION EVENT ASASSN-14li" @default.
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- W3100525859 doi "https://doi.org/10.3847/2041-8205/819/2/l25" @default.
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