Evidence for giant interacting coronal streamers in a pre-main-sequence binary system
| dc.creator | Massi, M. | |
| dc.date | 2009-05-19 | |
| dc.date.accessioned | 2026-07-07T13:16:43Z | |
| dc.date.available | 2026-07-07T13:16:43Z | |
| dc.description | Here we report on the VLBI discovery of solar-like extended streamers anchored on the two weak-line T Tauri stars of the binary system V773 Tau A. Covering the interbinary distance the 20 stellar radii extended streamers enter in collision during each stellar rotation with consequent occurrence of magnetic reconnection. Thermal electrons confined in the streamers become accelerated to relativistic speeds and emit synchrotron emission in the radio band making the magnetic streamers "visible" in the VLBI images. This is different from the solar case where the emission from the streamers is just scattered photospheric light that would never be observable in distant objects. Evidence of extended solar-like streamers in T Tauri stars, thought to be fully convective, or nearly fully convective objects, indicates that the tachoclinal layer, in this case either not existing at all or buried very deeply, is not relevant for the formation of such solar-like magnetic structures. | |
| dc.description | Invited talk at The 9th European VLBI Network Symposium on The role of VLBI in the Golden Age for Radio Astronomy and EVN Users Meeting, September 23-26, 2008,Bologna, Italy. 8 pages, 1 figure. To appear in Proceedings of Science | |
| dc.identifier | https://arxiv.org/abs/0905.3179 | |
| dc.identifier | http://arxiv.org/abs/0905.3179 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/230882 | |
| dc.subject | Solar and Stellar Astrophysics | |
| dc.title | Evidence for giant interacting coronal streamers in a pre-main-sequence binary system | |
| dc.type | text |