Adiabatic–radiative shock systems in YSO jets and novae outflows

0560703 - FZÚ 2023 RIV FR eng J - Journal Article
del Valle, M.V. - Araudo, Anabella Teresa - Suzuki-Vidal, F.
Adiabatic–radiative shock systems in YSO jets and novae outflows.
Astronomy & Astrophysics. Roč. 660, APR (2022), č. článku A104. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR(CZ) GA20-19854S
Institutional support: RVO:68378271
Keywords : radiative shocks * astrophysics * ISM * jets and outflows * stars * jets * novae * cataclysmic variables * instabilities * radiation mechanisms * non-thermal
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 6.5, year: 2022
Method of publishing: Limited access
https://doi.org/10.1051/0004-6361/202142017

Context. The termination regions of non-relativistic jets in protostars and supersonic outflows in classical novae are non-thermal emitters. This has been confirmed by radio and gamma-ray detection, respectively. A two-shock system is expected to be formed in the termination region where the jet, or the outflow material, and the ambient medium impact. Radiative shocks are expected to form in these systems given their high densities. However, in the presence of high velocities, the formation of adiabatic shocks is also possible. A case of interest is when the two types of shocks occur simultaneously. Adiabatic shocks are more efficient at particle acceleration while radiative shocks strongly compress the gas. Furthermore, a combined adiabatic–radiative shock system is very prone to developing instabilities in the contact discontinuity, leading to mixing, turbulence, and density enhancement. Additionally, these dense non-relativistic jets and and outflows are excellent candidates for laboratory experiments as demonstrated by magnetohydrodynamics scaling.
Permanent Link: https://hdl.handle.net/11104/0333559