Results 31 to 40 of about 3,592,155 (283)
Evolution of prolate molecular clouds at HII boundaries - I. formation of fragment-core structures [PDF]
, 2014 The evolution of a prolate cloud at an HII boundary is investigated using smoothed particle hydrodynamics. The prolate molecular clouds in our investigation are setwith their semi-major axis perpendicular to the radiative direction of a plane-parallel ...
Goodwin S +10 more
core +1 more source
Estimating molecular hydrogen in diffuse interstellar clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 1989 La densite de colonne de l'hydrogene moleculaire dans les nuages interstellaires diffus peut etre estimee de maniere satisfaisante par 2 methodes: a partir de la densite de colonne de l'hydrogene atomique combinee avec E(B-V); et a partir des observations optiques des molecules ...
W. B. Somerville, C. A. Smith
openaire +1 more source
Denoising Diffusion Probabilistic Models to Predict the Density of Molecular Clouds
The Astrophysical Journal, 2023 Abstract We introduce the state-of-the-art deep-learning denoising diffusion probabilistic model as a method to infer the volume or number density of giant molecular clouds (GMCs) from projected mass surface density maps. We adopt magnetohydrodynamic simulations with different global magnetic field strengths and large-scale dynamics, i.e.
Duo Xu +3 more
openaire +4 more sources
CTA and cosmic-ray diffusion in molecular clouds [PDF]
AIP Conference Proceedings, 2012 In Proceedings of the 2012 Heidelberg Symposium on High Energy Gamma-Ray Astronomy.
Pedaletti, G. +5 more
openaire +4 more sources
Diffuse interstellar medium and the formation of molecular clouds [PDF]
, 2009 (Abridged) The formation of molecular clouds (MCs) from the diffuse interstellar gas appears to be a necessary step for star formation, as young stars invariably occur within them. However, the mechanisms controlling the formation of MCs remain controversial.
Hennebelle, P. +2 more
openaire +2 more sources
Probing the turbulent ambipolar diffusion scale in molecular clouds with spectroscopy [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 14 pages, accepted for publication in ...
Hezareh, Talayeh +4 more
openaire +4 more sources
Turbulence in the interstellar medium [PDF]
, 2014 Turbulence is ubiquitous in the insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the re-acceleration and ...
Chian, A. C. -L. +9 more
core +2 more sources
Dissociative Recombination of CH+ Molecular Ion Induced by Very Low Energy Electrons
Atoms, 2019 We used the multichannel quantum defect theory to compute cross sections and rate coefficients for the dissociative recombination of CH + initially in its lowest vibrational level v i + = 0 with electrons of incident energy below 0 ...
Zsolt J. Mezei +3 more
doaj +1 more source
Towards an anagraphical picture of high-energy Galactic neutrinos [PDF]
EPJ Web of Conferences, 2019 The TeV/PeV neutrino emission from our Galaxy is related to the distribution of cosmic-ray accelerators, their maximal energy of injection as well as the propagation of injected particles and their interaction with molecular gas.
Marinelli Antonio +2 more
doaj +1 more source
Mutual influence of supernovae and molecular clouds [PDF]
, 2014 International audienceContext. Molecular clouds are known to be turbulent and strongly affected by stellar feedback. Moreover, stellar feedback is believed to drive turbulence at large scales in galaxies.Aims.
Olivier Iffrig +3 more
core +1 more source