Search results for " stars: individual: CD-39 7717B TWA 11B"

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A detailed study of the rise phase of a long duration X-ray flare in the young star TWA 11B

2010

We analyzed a long duration flare observed in a serendipitous XMM-Newton detection of the M star CD-39 7717B (TWA 11B), member of the young stellar association TW Hya (~ 8 Myr). Only the rise phase (with a duration of ~ 35 ks) and possibly the flare peak were observed. We took advantage of the high count-rate of the X-ray source to carry out a detailed analysis of its spectrum during the whole exposure. After a careful analysis, we interpreted the rise phase as resulting from the ignition of a first group of loops (event A) which triggered a subsequent two-ribbon flare (event B). Event A was analyzed using a single-loop model, while a two-ribbon model was applied for event B. Loop semi-leng…

Young stellar objectAstrophysics::High Energy Astrophysical PhenomenaPhase (waves)FOS: Physical sciencesAstrophysicsAstrophysics::Cosmology and Extragalactic Astrophysicslaw.inventionSettore FIS/05 - Astronomia E AstrofisicalawIonizationAstrophysics::Solar and Stellar AstrophysicsEmission spectrumAstrophysics::Galaxy AstrophysicsPhysicsHigh Energy Astrophysical Phenomena (astro-ph.HE)X-rayAstronomy and AstrophysicsAstrophysics - Astrophysics of GalaxiesStarsSpace and Planetary ScienceAstrophysics of Galaxies (astro-ph.GA)astrofisica fisica stellare flares stars: activity stars: coronae stars: flare stars: individual: CD-39 7717B TWA 11B stars: pre-main sequenceAstrophysics::Earth and Planetary AstrophysicsAstrophysics - High Energy Astrophysical PhenomenaEvent (particle physics)Flare
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