MAPPING QUASI-PERIODIC OSCILLATIONS FROM THE OUTBURSTING INTERMEDIATEPOLAR GK PERSEI

Authors
MORALESRUEDA L STILL MD ROCHE P
Citation
L. Moralesrueda et al., MAPPING QUASI-PERIODIC OSCILLATIONS FROM THE OUTBURSTING INTERMEDIATEPOLAR GK PERSEI, Monthly Notices of the Royal Astronomical Society, 283(3), 1996, pp. 58-62
Citations number
18
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Monthly Notices of the Royal Astronomical Society → ACNP
ISSN journal
00358711
Volume
283
Issue
3
Year of publication
1996
Pages
58 - 62
Database
ISI
SICI code
0035-8711(1996)283:3<58:MQOFTO>2.0.ZU;2-Z
Abstract
We present time-resolved spectrophotometry of GK Per taken on the rise to outburst maximum, in which we detect 5000-s quasi-periodic oscilla tions (QPOs) in the optical emission lines. We use this opportunity to provide a kinematically resolved analysis of the phenomenon. Observat ions are consistent with reprocessing off blobs of gas orbiting within the inner accretion disc, and evidence is found for the migration of the QPO source towards the compact star over orbital time-scales.