Non-ideal magnetohydrodynamics of self-gravitating filaments

Filaments have been studied in detail through observations and simulations. A range of numerical works separately investigated how chemistry diffusion effects, as well magnetic fields their structure impact the gas dynamics filament. However, non-ideal effects hardly explored thus far. We investigate magnetohydrodynamic (MHD) combined with a simplified chemical model affect evolution accretion star-forming modeled an accreting self-gravitating turbulent filament using lemongrab, one-dimensional (1D) MHD code that includes chemistry. explore influence MHD, orientation strength field, cosmic ray ionization rate, on filament, particular focus width rate. find rate are determined by field properties, including initial strength, coupling controlled respect to flow direction. Increasing cosmic-ray leads behavior closer ideal reducing pressure support and, hence, damping efficiency consequent broadening width. For same reason, we obtained narrower larger when reduced strength. Overall, while these factors final results approximately factor of~2, removing much greater variation (up of~7). The inclusion is crucial for study filaments determining critical observable quantities, such