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Detection of Dynamical Instability in Titan’s Thermospheric Jet

  • Authors: M. A. Cordiner, E. Garcia-Berrios, R. G. Cosentino, N. A. Teanby, C. E. Newman, C. A. Nixon, A. E. Thelen, and S. B. Charnley

2020 The Astrophysical Journal Letters 904 L12.

  • Provider: AAS Journals

Caption: Figure 1.

Left panels: ALMA HNC (J = 4−3) spectra observed at Titan’s eastern and western limbs in 2016 August and 2017 May, rebinned to a common channel spacing of 202 m s−1. Fitted Gaussian profiles are overlaid (dotted curves), along with their central velocities (vertical dotted lines). Right panels: corresponding continuum-subtracted, spectrally integrated flux maps of Titan’s HNC (J = 4−3) emission. The eastern and western spectra in the left panels were extracted 600 km above the equator, at the points labeled E and W, respectively. The FWHM of the (Gaussian) spatial resolution element is shown in the lower left of each map. Sky-projected distances are given with respect to the center of Titan’s disk (the ordinate axis is aligned with celestial north).

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