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astro-ph.SR2025

X-ray Evolution of Young Stars: Early Dimming and Coronal Softening in Solar-Mass Stars with Implications for Planetary Atmospheres

Konstantin V. Getman, Eric D. Feigelson, Vladimir S. Airapetian +1

X-ray and ultraviolet (XUV) emission from young stars plays a critical role in shaping the evolution of planetary atmospheres and the conditions for habitability. To assess the lon…

astro-ph.SR2025

XUE. JWST spectroscopy of externally irradiated disks around young intermediate-mass stars

María Claudia Ramírez-Tannus, Arjan Bik, Konstantin V. Getman +17

Most young stars and therefore planetary systems form in high-mass star forming regions and are exposed to ultraviolet radiation, affecting the protoplanetary disk. These regions a…

astro-ph.SR2025

Multi-Observatory Study of Young Stellar Energetic Flares (MORYSEF): No Evidence For Abnormally Strong Stellar Magnetic Fields After Powerful X-ray Flares

Konstantin V. Getman, Oleg Kochukhov, Joe P. Ninan +9

We explore the empirical power-law relationship between X-ray luminosity (Lx) and total surface magnetic flux (Phi), established across solar magnetic elements, time- and disk-aver…

astro-ph.SR2024

Multi-Observatory Research of Young Stellar Energetic Flares (MORYSEF): X-ray Flare Related Phenomena and Multi-epoch Behavior

Konstantin V. Getman, Eric D. Feigelson, Abygail R. Waggoner +8

The most powerful stellar flares driven by magnetic energy occur during the early pre-main sequence (PMS) phase. The Orion Nebula represents the nearest region populated by young s…