THE IMPACT OF A HIGH-VELOCITY CLOUD ONTO THE GALACTIC DISK

Authors
KERP J LESCH H MACK KH
Citation
J. Kerp et al., THE IMPACT OF A HIGH-VELOCITY CLOUD ONTO THE GALACTIC DISK, Astronomy and astrophysics, 286(1), 1994, pp. 13-16
Citations number
27
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
286
Issue
1
Year of publication
1994
Pages
13 - 16
Database
ISI
SICI code
0004-6361(1994)286:1<13:TIOAHC>2.0.ZU;2-P
Abstract
We present ROSAT and radio observations of a high velocity cloud (HVC) which encounters the Milky Way. At the edges of the HVC90.5+42.5-130 X-ray emitting gas (with T(e) congruent-to 2 . 10(6) K) as well as rel ativistic electrons and magnetic fields (traced by non-thermal radio c ontinuum emission) exist. We propose that the kinetic energy of the HV C is effectively transferred into heat via magnetic drag. The field li nes are compressed, turbulently mixed and dissipated via magnetic reco nnection, i.e. electric currents.