http://arxiv.org/abs/1901.04745
We report the detection of the 380 GHz H2O line emissions from the quadruply lensed QSO MG J0104+0534 at z = 2.639. This detection was made with the Atacama Large Millimeter/submillimeter Array (ALMA) at Band 3. The 380 GHz line spectrum shows a broad spectral distribution that has a velocity width of ~290 km/s and a peak flux of ~1.5 mJy (5.2 sigma). 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, this flux ratio anomaly could be explained if the 380 GHz line emissions come from two or three spatially displaced H2O maser components in the QSO, with the dominant one located at the continuum emission position and the other one(s) displaced from the continuum by ~1.5 kpc on the source plane.
C. Kuo, S. Suyu, C. Impellizzeri, et. al.
Wed, 16 Jan 19
3/76
Comments: 6 pages, 3 figures, submitted to ApJL
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