Investigation of Energy Release from X-ray Flares on Young Stellar Objects with NuSTAR
Abstract
Young stellar objects (YSOs), which tend to flare more frequently and at higher temperatures than what is typically observed on Sun-like stars, are excellent targets for studying the nature of energy release and transport in large flaring events. Multiple star-forming regions have been observed in the past by soft x-ray missions such as Chandra and XMM-Newton, but the energy ranges of these missions fall off prior to the hard x-ray regime, where it would be possible to search for a crossover from thermal to nonthermal emission. To investigate this hard x-ray emission, three 50ks observations of the star-forming region rho Ophiuchi have been taken with the Nuclear Spectroscopic Telescope Array (NuSTAR), which is optimized over the energy range of 3-79 keV. Multiple stellar flares have been identified in the observations; here we present the current spectral and timing analyses of the brightest of the these events, exploring the way energy is released as well as the effects of these large flares on the surrounding environment. We compare these results to what is typically observed for solar flares.
- Publication:
-
AAS/Solar Physics Division Abstracts #48
- Pub Date:
- August 2017
- Bibcode:
- 2017SPD....4820004V