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- W92386194 abstract "If radiation pressure alone cannot explain the high momentum flux in Wolf-Rayet winds, other acceleration mechanisms - such as a magnetic field - must be present. One possible signature of a strong magnetic field in a W-R star would be optical flares triggered by reconnection of field lines. As a test run for a more extensive search, we have obtained ∼5 h of high-speed photometry of the bright WN5 star EZ CMa, using a Stromgren b filter which is centred on the strong He II λ4686 line. Our preliminary results demonstrate that this technique is sensitive to events of low amplitude. An intriguing brightness increase of ∼1% was observed, lasting for about 10 min in the otherwise smooth light curve" @default.
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- W92386194 date "1992-12-01" @default.
- W92386194 modified "2023-09-27" @default.
- W92386194 title "Rapid photometry of EZ Canis Majoris : searching for flare activity in Wolf-Rayet stars" @default.
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