Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Hutchison, Mark"'
We introduce the Contour Analysis Tool (CAT), a Python toolkit aimed at identifying and analyzing structural elements in density maps. CAT employs various contouring techniques, including the lowest-closed contour (LCC), linear and logarithmic Otsu t
Externí odkaz:
http://arxiv.org/abs/2409.06421
Dust grains play a significant role in several astrophysical processes, including gas/dust dynamics, chemical reactions, and radiative transfer. Replenishment of small-grain populations is mainly governed by fragmentation during pair-wise collisions
Externí odkaz:
http://arxiv.org/abs/2404.11851
Publikováno v:
Geological Survey of Denmark and Greenland Bulletin, Vol 13, Pp 45-48 (2007)
Externí odkaz:
https://doaj.org/article/f73257868b4048eab226ff9af18e4b8c
Small grains play an essential role in astrophysical processes such as chemistry, radiative transfer, gas/dust dynamics. The population of small grains is mainly maintained by the fragmentation process due to colliding grains. An accurate treatment o
Externí odkaz:
http://arxiv.org/abs/2208.02964
Meteoritic studies of solar system objects show evidence of nucleosynthetic heterogeneities that are inherited from small presolar grains (< 10 $\mu$m) formed in stellar environments external to our own. The initial distribution and subsequent evolut
Externí odkaz:
http://arxiv.org/abs/2203.08620
Autor:
Hutchison, Mark A., Clarke, Cathie J.
We model the gas and dust dynamics in a turbulent protoplanetary disc undergoing extreme-UV photoevaporation in order to better characterise the dust properties in thermal winds (e.g. size distribution, flux rate, trajectories). Our semi-analytic app
Externí odkaz:
http://arxiv.org/abs/2011.08631
The interaction between a YSO stellar magnetic field and its protostellar disc can result in stellar accretional flows and outflows from the inner disc rim. Gas flows with a velocity component perpendicular to disc midplane subject particles to centr
Externí odkaz:
http://arxiv.org/abs/2002.08432
We study the dynamics of a viscous protoplanetary disc hosting a population of dust grains with a range of sizes. We compute steady-state solutions, and show that the radial motion of both the gas and the dust can deviate substantially from those for
Externí odkaz:
http://arxiv.org/abs/1806.10148
We present MULTIGRAIN, an algorithm for simulating multiple phases of small dust grains embedded in a gas, building on our earlier work in simulating two-phase mixtures of gas and dust in SPH (Laibe & Price 2012a,b; Price & Laibe 2015). The MULTIGRAI
Externí odkaz:
http://arxiv.org/abs/1806.00037
Autor:
Ballabio, Giulia, Dipierro, Giovanni, Veronesi, Benedetta, Lodato, Giuseppe, Hutchison, Mark, Laibe, Guillaume, Price, Daniel J.
We describe a new implementation of the one-fluid method in the SPH code Phantom to simulate the dynamics of dust grains in gas protoplanetary discs. We revise and extend previously developed algorithms by computing the evolution of a new fluid quant
Externí odkaz:
http://arxiv.org/abs/1803.03279