... ATNF Home . About ATNF . ... About ATNF overview . ... Parkes radio telescope . ... Numerical simulations (see Ruffert, 1997 and references therein) have shown that it is possible to form temporary accretion discs with alternating senses of rotation in wind-accreting systems. ... We found that in the inner disc, once the sense of rotation of inflowing material was reversed (figureб  3 ), the existing disc was rapidly driven inside the circularisation radius of the new counter-rotating matter. ...