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.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Adams, F.C., Lada, C.J., kShu, F.H. 1987, ApJ, 321, 788.
André, P 1996, Disk-like Structures around Young Stars, Ed. Frontières, in press.
André, P., KMontmerle, T., 1994, ApJ, 420, 837.
Bertout, C. 1989, Ann. Rev. Astr. Ap., 27, 351.
Bouvier, J. 1990, AJ, 99, 946.
Caillault, J.-P. 1995, ROSAT Science Symposium, AIP Conf. Ser., in press.
Carkner, L., et al. 1996, ApJ, in press.
Casanova, S. 1994, Ph.D. thesis, Université Paris VII
Casanova, S., Montmerle, T., Feigelson, E.D., & André, P. 1995. ApJ, 439, 752.
Feigelson, E.D., Casanova, S., Montmerle, T., & Guibert, J. 1993, ApJ, 416, 623.
Feigelson, E.D. & Montmerle, T. 1985, ApJ, 289, L19.
Güdel, M., & Guinan, E.F. 1996, IAU Coll. 152, in press.
Hartmann, L., Hewett, R., & Calvet, N. 1994, ApJ, 426, 669.
Koyama, K., Etal. 1994, PASJ, 46, L125.
Koyama, K., Ueno, S., Kobayashi, N., & Feigelson, E.D. 1996, Nature, in press.
La Valley, M., Isobe, T. & Feigelson, E.D. 1992, BAAS, 24, 839.
Montmerle, T., et al. 1983, ApJ, 269, 182.
Montmerle, T., et al. 1993, Protostars & Planets III, U. of Arizona Press, p.689.
Montmerle, T., et al. 1994, Cosmic Magnetism, Cambridge, p. 33.
Neuhaüser, R. et al. 1995, A&A, 297, 391.
Preibisch, T., Zinnecker, H., & Herbig, G.H. 1996, A&A, in press.
Preibisch, T., Zinnecker, H., & Schmitt, J.H.M.M. 1993, AfcA, 279, L33.
Sargent, A.I. 1996, Disks and Outflows around Young Stars, Springer, in press.
Stine, P.C., Feigelson, E.D., André, P., & Montmerle, T. 1988, AJ, 96, 1394.
Wilking, B.A., Lada, C.J., & Young, E.T. 1989, ApJ, 340, 823
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1996 Kluwer Academic Publishers
About this chapter
Cite this chapter
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
Download citation
DOI: https://doi.org/10.1007/978-94-009-0315-9_45
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6627-3
Online ISBN: 978-94-009-0315-9
eBook Packages: Springer Book Archive