6533b86ffe1ef96bd12ce9d0
RESEARCH PRODUCT
Simultaneous Kepler/K2 and XMM‐Newton observations of superflares in the Pleiades
Javier Lopez-santiagoJulián D. Alvarado-gómezJohn R. StaufferGiuseppina MicelaVallia AntoniouSalvatore SciortinoFabio RealeFabio RealeLuisa RebullJ. J. DrakeM. G. GuarcelloCostanza ArgiroffiCostanza ArgiroffiEttore Flaccomiosubject
PhysicsSettore FIS/05 - Astronomia E AstrofisicaSpace and Planetary ScienceAstrophysics::High Energy Astrophysical PhenomenaPhysics::Space PhysicsAstrophysics::Solar and Stellar AstrophysicsAstronomyAstronomy and Astrophysicsstars: activity stars: coronae stars: flare X-rays: starsPleiadesKeplerSuperflaredescription
Proceeding of a contributed talk given at the meeting: "TIME-DOMAIN ASTRONOMY: A HIGH ENERGY VIEW" held at ESAC, Madrid, 13 - 15 JUNE 2018 Together with coronal mass ejection, flares are the most energetic stellar magnetic events, ignited by a sudden release of magnetic energy, which triggers a cascade of interconnected phenomena, each resulting in emission in different bands. For this reason, flares are intrinsic multiwavelength phenomena. In particular, optical and soft X-ray emission probes two different events occurring during flares: the heating of plasma in the upper photosphere at the footpoints of the magnetic loops and the heating and cooling of the plasma confined in the loops in the corona, respectively. To characterize powerful flares observed in optical and X-rays, constrain the energy released in both bands, the geometry of the loops, and to study flares time evolution, we studied the brightest flares occurred in the 125-Myr-old stars in the Pleiades observed simultaneously with x-ray multi-mirror mission/Newton and Kepler/K2.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-03-25 | Astronomische Nachrichten |