The Nuclear Filaments inside the Circumnuclear Disk in the Central 0.5
  pc of the Galactic center
  We present CS(7-6) line maps toward the central parsec of the Galactic Center
(GC), conducted with the Atacama Large Millimeter/submillimeter Array (ALMA).
The primary goal is to find and characterize the gas structure in the inner
cavity of the circumnuclear disk (CND) in high resolution (1.3"=0.05 pc). Our
large field-of-view mosaic maps -- combining interferometric and single-dish
data that recover extended emission - provide a first homogeneous look to
resolve and link the molecular streamers in the CND with the neutral nuclear
filaments newly detected within the central cavity of the CND. We find that the
nuclear filaments are rotating with Keplerian velocities in a nearly face-on
orbit with an inclination angle of ~10-20 degree (radius <= 0.5 pc). This is in
contrast to the CND which is highly inclined at ~65-80 degree (radius ~2-5 pc).
Our analysis suggests a highly warped structure from the CND to the nuclear
filaments. This result may hint that the nuclear filaments and the CND were
created by different external clouds passing by Sgr A*.
