Abstract
The most well-known “Young Stellar Objects” are the T Tauri stars, I.E., young, solar-type stars, first detected in X-rays by Einstein. With ROSAT and ASCA, the family of X-ray emitting young stars has been extended to protostars. X-ray emission is only related to surface magnetic phenomena, independently of the amount of circumstellar material. Although other forms of variability have been observed, solar-type flares are the main form of X-ray activity (at levels typically 102 – 103 higher than on the Sun). However, general X-ray properties bring no clearcut proof that the classical dynamo mechanism operates in YSOs.
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Montmerle, T., Casanova, S. (1996). X-Ray Flares and Variability of Young Stellar Objects. In: Uchida, Y., Kosugi, T., Hudson, H.S. (eds) Magnetodynamic Phenomena in the Solar Atmosphere. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0315-9_45
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DOI: https://doi.org/10.1007/978-94-009-0315-9_45
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