Context. The degree of coupling between the gas and the magnetic field during the collapse
of a core and the subsequent formation of a disk depends on the assumed dust size …

Context. Surveys of protoplanetary disks in star-forming regions of similar age revealed
significant variations in average disk mass in some regions. For instance, disks in the Orion …

In many astrophysical applications, the cost of solving a chemical network represented by a
system of ordinary differential equations (ODEs) grows significantly with the size of the …

Rings and gaps are routinely observed in the dust continuum emission of protoplanetary
discs (PPDs). How they form and evolve remains debated. Previous studies have …

Context. Observations of the emission of the carbon cycle species (C, C+, CO) are
commonly used to diagnose gas properties in the interstellar medium, but they are …

Context. Filaments have been studied in detail through observations and simulations. A
range of numerical works have separately investigated how chemistry and diffusion effects …

Context. Ambipolar diffusion is a physical mechanism related to the drift between charged
and neutral particles in a partially ionized plasma that is key to many different astrophysical …

In the interstellar medium, Galactic and extragalactic cosmic rays (CRs) penetrate deeper in
the molecular clouds (MCs) and promote inside several physical and physicochemical …

The dispersal phase of planet-forming discs via winds driven by irradiation from the central
star and/or magnetic fields in the disc itself is likely to play an important role in the formation …

Context. Ambipolar diffusion is a process occurring in partially ionised astrophysical systems
that imparts a complicated mathematical and physical nature to Ohm's law. The numerical …