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Mass Accretion Processes in Young Stellar Objects: Role of Intense Flaring Activity
- Source :
- Acta Polytechnica CTU Proceedings, Vol 1, Iss 1, Pp 108-112 (2014), NASA Astrophysics Data System
- Publication Year :
- 2014
- Publisher :
- Czech Technical University in Prague - Central Library, 2014.
-
Abstract
- According to the magnetospheric accretion scenario, young low-mass stars are surrounded by circumstellar disks which they interact with through accretion of mass. The accretion builds up the star to its final mass and is also believed to power the mass outflows, which may in turn have a significant role in removing the excess angular momentum from the star-disk system. Although the process of mass accretion is a critical aspect of star formation, some of its mechanisms are still to be fully understood. On the other hand, strong flaring activity is a common feature of young stellar objects (YSOs). In the Sun, such events give rise to perturbations of the interplanetary medium. Similar but more energetic phenomena occur in YSOs and may influence the circumstellar environment. In fact, a recent study has shown that an intense flaring activity close to the disk may strongly perturb the stability of circumstellar disks, thus inducing mass accretion episodes (Orlando et al. 2011). Here we review the main results obtained in the field and the future perspectives.<br />4 pages, 2 Figures; accepted for publication on Acta Polytechnica (Proceedings of the Frascati Workshop 2013)
- Subjects :
- Angular momentum
MHD
Stars: flare
Astrophysics::High Energy Astrophysical Phenomena
Young stellar object
FOS: Physical sciences
Interplanetary medium
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Acoustics and Ultrasonic
Accretion, accretion disk
Intermediate polar
Astrophysics::Solar and Stellar Astrophysics
X-rays: star
Solar and Stellar Astrophysics (astro-ph.SR)
Astrophysics::Galaxy Astrophysics
Nuclear and High Energy Physic
General Environmental Science
Physics
Radiation
Star formation
Astronomy
Accretion (astrophysics)
Stars
Astrophysics - Solar and Stellar Astrophysics
lcsh:TA1-2040
Space and Planetary Science
Stars: circumstellar matter
General Earth and Planetary Sciences
Circumstellar dust
Astrophysics::Earth and Planetary Astrophysics
lcsh:Engineering (General). Civil engineering (General)
Stars: pre-main-sequence
Subjects
Details
- ISSN :
- 23365382
- Volume :
- 1
- Database :
- OpenAIRE
- Journal :
- Acta Polytechnica CTU Proceedings
- Accession number :
- edsair.doi.dedup.....186c9e30089eed40b159ad7df2b44d2d