... 1997: . The character of internal motions of gas in 7200 HI clouds in the outer region of our Galaxy was investigated according to the data of the HI survey with the RATAN-600. It turned out that the effect of turbulence, as the main mechanism of gas motion is not essential, while it was discovered that 36% of the clouds are rotating. ... Periodic variations of optical emission of the gamma, X-ray and radio pulsar GEMINGA were for the first time discovered from the observations with the BTA. ...

... On the base of laboratory simulations (on rotating shallow water) of the formation of spiral arms in galactic gaseous disks, the existence of giant anticyclones in them was predicted. Numerical simulations shown that the vortex structures arise on a linear stage of spiral arms formation simultaneously with the latter. ... Thus second giants structures, after spiral arms, in spiral galactic disks are discovered. ...