{ "id": "1309.4383", "version": "v1", "published": "2013-09-17T16:49:43.000Z", "updated": "2013-09-17T16:49:43.000Z", "title": "Oscillations of the Boundary Layer and High-frequency QPOs", "authors": [ "A. A. Blinova", "M. Bachetti", "M. M. Romanova" ], "comment": "4 pages, 3 figures, conference proceedings: \"Physics at the Magnetospheric Boundary\", Geneva, Switzerland, 25-28 June, 2013", "categories": [ "astro-ph.SR", "astro-ph.HE" ], "abstract": "We observed persistent high-frequency oscillations of the boundary layer near an accreting, weakly-magnetized star in global 3D MHD simulations. The tilted dipole magnetic field is not strong enough to open a gap between the star and the disk. Instead, it forms a highly-wrapped azimuthal field near the surface of the star which slows down rotation of the disk matter, while a small tilt of the field excites oscillations of the boundary layer with a frequency below the Keplerian frequency. This mechanism may be responsible for the high-frequency oscillations in accreting neutron stars, white dwarfs and classical T Tauri stars.", "revisions": [ { "version": "v1", "updated": "2013-09-17T16:49:43.000Z" } ], "analyses": { "keywords": [ "boundary layer", "high-frequency qpos", "global 3d mhd simulations", "persistent high-frequency oscillations", "field excites oscillations" ], "tags": [ "conference paper", "journal article" ], "publication": { "doi": "10.1051/epjconf/20136405009" }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable", "inspire": 1254412, "adsabs": "2014EPJWC..6405009B" } } }