How Do T Tauri Stars Generate X-rays?

Physics

Scientific paper

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Chandra Proposal Id #06200742

Scientific paper

X-ray emission is an indicator of the presence of powerful magnetic fields in the immediate environments of young stars. In turn, the magnetic reconnection events that generate the X-rays require a stimulus. If PMS stars are like MS stars, fast rotation generates coronal X-rays; however, strong evidence exists that X-rays from classical T Tauri stars (TTS) may be generated through accretion streams. We request 120 ksec to survey six binary systems (20 ksec per binary), each containing one classical TTS and one weak-lined (diskless) TTS. Using subpixel event repositioning techniques, as neccessary, we will determine the X-ray flux rates and spectral energy distributions for these TTS and thereby provide important constraints on theories for X-ray generation from PMS stars.

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