Abstract
X-ray observations have shown extensive flaring activity in young stellar associations such as the Orion nebula. Observed flares are often very long and intense, and have been associated to very long magnetic loops, which may connect the stellar surface to the circumstellar disk. As such, these loops are candidate to be also the channel of star accretion from the disk, and one then wonders whether they flare during accretion flows. As a first attack to this question we have modelled in detail flares inside long coronal loops containing plasma at high density, comparable to that presumed for accretion flows. Preliminary results show that such flares would decay on time scales smaller than the observed ones.
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References
S. Masuda, T. Kosugi, H. Hara, S. Tsuneta, Y. Ogawara, Nature, 371, 495 (1994). DOI 10.1038/371495a0
M.J. Aschwanden, D. Alexander, Sol. Phys. 204, 91 (2001). DOI 10.1023/A:1014257826116
G. Peres, G.S. Vaiana, Memorie della Societa Astronomica Italiana, 61, 401 (1990)
F. Reale, A&A, 471, 271 (2007). DOI 10.1051/0004-6361:20077223
F. Reale, in Stellar Coronae in the Chandra and XMM-NEWTON Era, Astronomical Society of the Pacific Conference Series, vol. 277, ed. by F. Favata, J.J. Drake (2002), pp. 103–+
S. Serio, F. Reale, J. Jakimiec, B. Sylwester, J. Sylwester, A&A, 241, 197 (1991)
F. Reale, G. Peres, S. Serio, A&A, 318, 506 (1997)
J. Jakimiec, B. Sylwester, J. Sylwester, S. Serio, G. Peres, F. Reale, A&A, 253, 269 (1992)
F. Favata, E. Flaccomio, F. Reale, G. Micela, S. Sciortino, H. Shang, K.G. Stassun, E.D. Feigelson, ApJS, 160, 469 (2005). DOI 10.1086/432542
R. Rosner, W.H. Tucker, G.S. Vaiana, ApJ, 220, 643 (1978). DOI 10.1086/155949
J. Robrade, J.H.M.M. Schmitt, A&A, 473, 229 (2007). DOI 10.1051/0004-6361:20077644
M.M. Jardine, S.G. Gregory, J.F. Donati, MNRAS, 386, 688 (2008). DOI 10.1111/j.1365-2966.2008.13103.x
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Reale, F. (2009). Flaring Activity in Accretion Flows of Young Stellar Objects. In: Tsinganos, K., Ray, T., Stute, M. (eds) Protostellar Jets in Context. Astrophysics and Space Science Proceedings. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-00576-3_22
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DOI: https://doi.org/10.1007/978-3-642-00576-3_22
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