The peak radio emission phase variations in the Be-star/X-ray source LSI+61o303
Krishna M.V. Apparao
Received 23 March 1999 / Accepted 1 September 1999
The orbital phase of the peak radio emission in the Be star/X-ray source LSI +61o 303 shows variations ranging from 0.5 to 0.9, the weaker emissions showing the larger phase. The delay in attaining peak emission is explained as due to the time required for the relativistic gas bubble responsible for the radio emission, expanding in the hot wind of the Be star, to become large enough in size to become optically thin at the radio frequencies.
Key words: accretion, accretion disks stars: binaries: general stars: emission-line, Be stars: individual: LSI +61O 303 radio continuum: stars X-rays: stars
© European Southern Observatory (ESO) 1999
Online publication: November 3, 1999