Comet formation in collapsing pebble clouds
نویسندگان
چکیده
منابع مشابه
Molecular Line Profiles of Collapsing Gas Clouds
Emission line profiles of tracer molecule H2CO 140 GHz transition from gravitational core collapsing clouds in the dynamic process of forming protostars are calculated, using a simple ray-tracing radiative transfer model. Three self-similar dynamic insideout core collapse models – the conventional polytropic model, the empirical hybrid model and the isothermal model – for star-forming molecular...
متن کاملDynamical Collapse of Magnetized Molecular Clouds: Formation of Self-Similarly Collapsing Disks
We followed fragmentation of magnetized lamentary clouds and formation of disks with two-dimensional numerical simulations. A lamentary cloud with longitudinal magnetic elds fragments to form geometrically thin disks perpendicular to the magnetic eld. Each disk collapses self-similarly toward the lament axis, keeping quasi-static equilibrium in the direction parallel to the axis. With some simp...
متن کاملParticle formation around clouds
Observations of new particle formation in enhanced UV irradiance zones near cumulus clouds B. Wehner, F. Werner, F. Ditas, R. A. Shaw, M. Kulmala, and H. Siebert Leibniz Institute for Tropospheric Research (TROPOS), 04318 Leipzig, Germany Leipzig Institute for Meteorology, 04103 Leipzig, Germany Department of Physics, Michigan Technological University, Houghton, Michigan, USA Department of Phys...
متن کاملStudy on Pebble-Fluid Interaction Effect in Pebble Bed Reactors
INTRODUCTION In pebble bed reactors (PBRs), fuel pebbles containing TRISO particles continuously circulate within the core during operation, while the coolant fluid, either helium gas (in Pebble Bed Gas-cooled Reactors) or molten flibe salt (in Pebble Bed-Advanced High Temperature Reactors), continuously passes through the pebbles to transfer the heat generated by fission reactions out of the c...
متن کاملThree-dimensional simulation of jet formation in collapsing condensates
Abstract We numerically study the behaviour of collapsing and exploding condensates using the parameters of the experiments by Donley et al (2001 Nature 412 295). Our studies are based on a full three-dimensional numerical solution of the Gross–Pitaevskii equation (GPE) including three-body loss. We determine the three-body loss rate from the number of remnant condensate atoms and collapse time...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2016
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201526565