Searching For the 380 GHz H2O emission from the High-z lensed QSO MG
  J0414+0534
  We report the result of our search for the 380 GHz H2O line emissions from
the quadruply lensed QSO MG J0104+0534 at z = 2.639 with the Atacama Large
Millimeter/submillimeter Array (ALMA). Our observation shows a tentative
detection of the 380 GHz line from the lensed QSO, and line spectrum shows a
broad spectral distribution that has a velocity width of ~290 km/s and a peak
flux of ~0.8 mJy. The integrated-intensity map of the H2O line show lensed
emissions at the A1 and A2 component of the QSO, with the A2 component slightly
resolved. The integrated line flux ratio between the A1 and A2 component shows
unexpected difference with the continuum flux ratio. Based on our gravitational
lens modeling assuming our tentative detection is real, this flux ratio anomaly
would suggest that the 380 GHz line emissions come from two or three spatially
displaced locations in the QSO, with the dominant one located at the position
of the continuum emission from the QSO and the other one(s) displaced from the
continuum by ~1.5 kpc on the source plane.
