The WISE Detection of an Infrared Echo in Tidal Disruption Event ASASSN-14li

@article{Jiang2016TheWD,
  title={The WISE Detection of an Infrared Echo in Tidal Disruption Event ASASSN-14li},
  author={Ning Jiang and Liming Dou and Tinggui Wang and Chenwei Yang and Jianwei Lyu and Hongyan Zhou},
  journal={arXiv: High Energy Astrophysical Phenomena},
  year={2016}
}
We report the detection of a significant infrared variability of the nearest tidal disruption event (TDE) ASASSN-14li using Wide-field Infrared Survey Explorer} and newly released Near-Earth Object WISE Reactivation} data. In comparison with the quiescent state, the infrared flux is brightened by 0.12 and 0.16 magnitude in the W1 ($3.4\mu$m) and W2 ($4.6\mu$m) bands at 36 days after the optical discovery (or $\sim110$ days after the peak disruption date). The flux excess is still detectable… 

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TLDR
Flows of hot, ionized gas are detected in high-resolution X-ray spectra of a nearby tidal disruption event, ASASSN-14li in the galaxy PGC 043234, consistent with a rotating wind from the inner, super-Eddington region of a nascent accretion disk, or with a filament of disrupted stellar gas near to the apocentre of an elliptical orbit.
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