Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...259..149w&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 259, no. 1, p. 149-154.
Astronomy and Astrophysics
Astrophysics
34
Radio Stars, Stellar Flares, Stellar Magnetic Fields, T Tauri Stars, Pre-Main Sequence Stars, Stellar Coronas
Scientific paper
We report the first detection of circular polarization in the radio emission of two weak-line T Tauri stars. This is direct confirmation of the presence of magnetic fields in the coronae of these stars. The degree of polarization at 5 GHz is small, consistent with previous observations which did not find measurable polarization. We have also observed a radio flare on one of the two stars. The rising spectrum of the radio emission together with the low degree of polarization are strong evidence that radio outbursts on this class of stars are due to nonthermal gyrosynchrotron emission which is optically thick in the microwave range. One of the two stars shows no evidence for circumstellar material, and thus can be classified as 'naked'. However the other apparently has a dust disk, and the evidence of flaring on this star indicates that the mechanism involved does not require an empty circumstellar environment.
Kundu Mukul R.
Pallavicini Roberto
White Stephen M.
No associations
LandOfFree
Radio flares and magnetic fields on weak-line T Tauri stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Radio flares and magnetic fields on weak-line T Tauri stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radio flares and magnetic fields on weak-line T Tauri stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1199064