High Energy Emission and its Variability in Young Stellar Objects
| Autor: | Costanza Argiroffi |
|---|---|
| Přispěvatelé: | Argiroffi, C. |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
stars
Young stellar object Astrophysics::High Energy Astrophysical Phenomena Magnetosphere FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics 01 natural sciences law.invention X-ray Settore FIS/05 - Astronomia E Astrofisica accretion star law 0103 physical sciences Astrophysics::Solar and Stellar Astrophysics 010303 astronomy & astrophysics premain sequence Solar and Stellar Astrophysics (astro-ph.SR) Astrophysics::Galaxy Astrophysics Physics High Energy Astrophysical Phenomena (astro-ph.HE) 010308 nuclear & particles physics activity Astronomy and Astrophysics Plasma Accretion (astrophysics) Stars T Tauri star Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science Outflow Astrophysics::Earth and Planetary Astrophysics Astrophysics - High Energy Astrophysical Phenomena Flare |
| Popis: | Young stars show a variety of highly energetic phenomena, from accretion and outflow processes to hot coronal plasmas confined in their outer atmosphere, all regulated by the intense stellar magnetic fields. Many aspects on each of these phenomena are debated, but, most notably, their complex mutual interaction remains obscure. In this work I report how these phenomena are simultaneously responsible for the high-energy emission from young stars, with a special focus on the expected and observed variability in the X-ray band. Investigating variations in the X-ray emission from young stars allows us to pose constraints on flare and coronal plasma properties, coronal heating, accretion stream properties, and accretion geometries. All these results are important building blocks for constructing a comprehensive picture of the complex magnetosphere of young stars. Proceeding paper of the conference "Time-Domain Astronomy: A High Energy View". Accepted by Astronomische Nachrichten |
| Databáze: | OpenAIRE |
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