Zobrazeno 1 - 10
of 266
pro vyhledávání: '"Bonnell, Ian A."'
Autor:
Lau, Cheryl S. C., Bonnell, Ian A.
Galactic-scale simulations rely on sub-grid models to provide prescriptions for the coupling between supernova (SN) feedback and the interstellar medium (ISM). Many of these models are computed in 1-D to allow for an efficient way to account for the
Externí odkaz:
http://arxiv.org/abs/2410.21255
HII regions powered by ionizing radiation from massive stars drive the dynamical evolution of the interstellar medium. Fast radiative transfer methods for incorporating photoionization effects are thus essential in astrophysical simulations. Previous
Externí odkaz:
http://arxiv.org/abs/2410.15227
Modelling the interaction between ionizing photons emitted from massive stars and their environment is essential to further our understanding of galactic ecosystems. We present a hybrid Radiation-Hydrodynamics (RHD) scheme that couples an SPH code to
Externí odkaz:
http://arxiv.org/abs/2404.17084
Autor:
Wurster, James, Bonnell, Ian A.
We model the collision of molecular clouds to investigate the role of the initial properties on the remnants. Our clouds collide and evolve in a background medium that is approximately ten times less dense than the clouds, and we show that this relat
Externí odkaz:
http://arxiv.org/abs/2304.01255
Are the kG-strength magnetic fields observed in young stars a fossil field left over from their formation or are they generated by a dynamo? Our previous numerical study concluded that magnetic fields must originate by a dynamo process. Here, we cont
Externí odkaz:
http://arxiv.org/abs/2201.07253
Autor:
Williams, Gwenllian M., Cyganowski, Claudia J., Brogan, Crystal L., Hunter, Todd R., Ilee, John D., Nazari, Pooneh, Kruijssen, J. M. Diederik, Smith, Rowan J., Bonnell, Ian A.
Using the Atacama Large Millimetre/submillimeter Array (ALMA) and the Karl G. Jansky Very Large Array (VLA), we observed the Extended Green Object (EGO) G19.01$-$0.03 with sub-arcsecond resolution from 1.05 mm to 5.01 cm wavelengths. Our $\sim0.4''\s
Externí odkaz:
http://arxiv.org/abs/2110.06262
Publikováno v:
MNRAS, 507, 858-878 (2021)
The ionising feedback of young massive stars is well known to influence the dynamics of the birth environment and hence plays an important role in regulating the star formation process in molecular clouds. For this reason, modern hydrodynamics codes
Externí odkaz:
http://arxiv.org/abs/2109.13953
Non-ideal magnetohydrodynamic (MHD) processes -- namely Ohmic resistivity, ambipolar diffusion and the Hall effect -- modify the early stages of the star formation process and the surrounding environment. Collectively, they have been shown to promote
Externí odkaz:
http://arxiv.org/abs/2108.02787
Feedback from supernovae is often invoked as an important process in limiting star formation, removing gas from galaxies and hence as a determining process in galaxy formation. Here we report on numerical simulations investigating the interaction bet
Externí odkaz:
http://arxiv.org/abs/2002.04868
Autor:
Lund, Kristin, Wood, Kenneth, Falceta-Gonçalves, Diego, Vandenbroucke, Bert, Sartorio, Nina, Bonnell, Ian, Johnston, Katharine, Keto, Eric
This paper investigates the gravitational trapping of HII regions predicted by steady-state analysis using radiation hydrodynamical simulations. We present idealised spherically symmetric radiation hydrodynamical simulations of the early evolution of
Externí odkaz:
http://arxiv.org/abs/1903.00486