0000000000870802

AUTHOR

John P. Pye

showing 1 related works from this author

The Mouse That Roared: A Superflare from the dMe Flare Star EV Lac Detected by Swift and Konus-Wind

2010

We report on a large stellar flare from the nearby dMe flare star EV Lac observed by the Swift and Konus-Wind satellites and the Liverpool Telescope. It is the first large stellar flare from a dMe flare star to result in a Swift trigger based on its hard X-ray intensity. Its peak f_X from 0.3--100 keV of 5.3x10^-8 erg/cm2/s is nearly 7000 times larger than the star's quiescent coronal flux, and the change in magnitude in the white filter is >4.7. This flare also caused a transient increase in EV Lac's bolometric luminosity (L_bol) during the early stages of the flare, with a peak estimated L_X/L_bol ~3.1. We apply flare loop hydrodynamic modeling to the plasma parameter temporal changes …

Astrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesFluxAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsLuminositylaw.inventionSettore FIS/05 - Astronomia E AstrofisicalawIonizationX-raysAstrophysics::Solar and Stellar AstrophysicsSolar and Stellar Astrophysics (astro-ph.SR)Astrophysics::Galaxy AstrophysicsPhysicsFlare starAstronomy and Astrophysicsastrofisica fisica stellare stars: activity stars: coronae stars: flare stars: individual: EV Lac stars: late-type X-rays: starsAstrophysics - Solar and Stellar AstrophysicsSpace and Planetary ScienceMagnitude (astronomy)Plasma parameterStellar PhysicAstrophysics::Earth and Planetary AstrophysicsSuperflareFlare
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