Giant cyclones in gaseous discs of spiral galaxies

Authors
Fridman, AM Khoruzhii, OV Polyachenko, EV Zasov, AV Sil'chenko, OK Afanas'ev, VL Dodonov, SN Moiseev, AV
Citation
Am. Fridman et al., Giant cyclones in gaseous discs of spiral galaxies, PHYS LETT A, 264(2-3), 1999, pp. 85-93
Citations number
15
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS A
ISSN journal
03759601 → ACNP
Volume
264
Issue
2-3
Year of publication
1999
Pages
85 - 93
Database
ISI
SICI code
0375-9601(199912)264:2-3<85:GCIGDO>2.0.ZU;2-P
Abstract
We report the detection of giant cyclonic vortices in the gaseous disc of t he spiral galaxy NGC 3631 in the reference frame rotating with the spiral p attern. A presence of such structures was predicted by the authors for gala xies, where the radial gradient of the perturbed velocity exceeds that of t he rotational velocity. This situation really takes place in NGC 3631. (C) 1999 Published by Elsevier Science B.V. All rights reserved.