Oscillations of the Boundary Layer and High-frequency QPOs
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...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2014-01-01
|
| Series: | EPJ Web of Conferences |
| Online Access: | http://dx.doi.org/10.1051/epjconf/20136405009 |
| _version_ | 1818778023332151296 |
|---|---|
| author | Blinova A. A. Bachetti M. Romanova M. M. |
| author_facet | Blinova A. A. Bachetti M. Romanova M. M. |
| author_sort | Blinova A. A. |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-18T11:38:08Z |
| format | Article |
| id | doaj.art-3cbdd64112354301bceacccbac7b6be6 |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-18T11:38:08Z |
| publishDate | 2014-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-3cbdd64112354301bceacccbac7b6be62022-12-21T21:09:28ZengEDP SciencesEPJ Web of Conferences2100-014X2014-01-01640500910.1051/epjconf/20136405009epjconf_mag2013_05009Oscillations of the Boundary Layer and High-frequency QPOsBlinova A. A.Bachetti M.Romanova M. M.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.http://dx.doi.org/10.1051/epjconf/20136405009 |
| spellingShingle | Blinova A. A. Bachetti M. Romanova M. M. Oscillations of the Boundary Layer and High-frequency QPOs EPJ Web of Conferences |
| title | Oscillations of the Boundary Layer and High-frequency QPOs |
| title_full | Oscillations of the Boundary Layer and High-frequency QPOs |
| title_fullStr | Oscillations of the Boundary Layer and High-frequency QPOs |
| title_full_unstemmed | Oscillations of the Boundary Layer and High-frequency QPOs |
| title_short | Oscillations of the Boundary Layer and High-frequency QPOs |
| title_sort | oscillations of the boundary layer and high frequency qpos |
| url | http://dx.doi.org/10.1051/epjconf/20136405009 |
| work_keys_str_mv | AT blinovaaa oscillationsoftheboundarylayerandhighfrequencyqpos AT bachettim oscillationsoftheboundarylayerandhighfrequencyqpos AT romanovamm oscillationsoftheboundarylayerandhighfrequencyqpos |