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Wang, S.; Wang, X.Y.; Wu, Chien-Sheng; Li, Y.; Chao, J. K.; Yeh, Tom

doi:10.1023/a:1012218012135

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…Ejected plasmoids moving outward would create disturbances or shocks in the disk wind (or the stellar wind). By analogy, interactions of CMEs with the solar wind are indeed known to occur and can produce shocks and wind disturbances (Gosling et al 1995;Wang et al 2001). Plasmoids that fail to reach escape speed could also shock against the outflowing wind on reentry.…”

Section: Plasmoid Ejections?mentioning

confidence: 99%

CHANDRAEVIDENCE FOR EXTENDED X-RAY STRUCTURE IN RY Tau

Skinner

Audard

Güdel

2011

ApJ

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We report results of a sensitive Chandra ACIS-S observation of the classical T Tauri star RY Tau. Previous studies have shown that it drives a spectacular bipolar jet whose blueshifted component is traced optically along P.A. ≈ 295• at separations of 1. 5-31 from the star. Complex X-ray emission is revealed, including a very soft non-variable spectral component (some of which may originate in shocks), a superhot flaring component (T 100 MK), and faint extended structure near the star. The structure is visible in deconvolved images and extends northwestward out to a separation of 1. 7, overlapping the inner part of the optical jet. Image analysis suggests that most of the extension is real, but some contamination by point-spread-function-induced structure within the central arcsecond may be present. The predicted temperature for a shock-heated jet based on jet speed and shock speed estimates from optical measurements is too low to explain the extended X-ray structure. Either higher speed material within the jet has escaped optical detection or other mechanisms besides shock heating are involved. Alternative mechanisms that could produce higher temperature plasma at small offsets to the northwest of RY Tau include magnetic heating in the jet, hot plasmoids ejected at high speeds, or X-ray emission from a putative close companion whose presence has been inferred from Hipparcos variations.

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Section: Plasmoid Ejections?mentioning

confidence: 99%