English

CMR exploration II -- filament identification with machine learning

Astrophysics of Galaxies 2023-08-15 v1 Instrumentation and Methods for Astrophysics

Abstract

We adopt magnetohydrodynamics (MHD) simulations that model the formation of filamentary molecular clouds via the collision-induced magnetic reconnection (CMR) mechanism under varying physical conditions. We conduct radiative transfer using RADMC-3D to generate synthetic dust emission of CMR filaments. We use the previously developed machine learning technique CASI-2D along with the diffusion model to identify the location of CMR filaments in dust emission. Both models showed a high level of accuracy in identifying CMR filaments in the test dataset, with detection rates of over 80% and 70%, respectively, at a false detection rate of 5%. We then apply the models to real Herschel dust observations of different molecular clouds, successfully identifying several high-confidence CMR filament candidates. Notably, the models are able to detect high-confidence CMR filament candidates in Orion A from dust emission, which have previously been identified using molecular line emission.

Keywords

Cite

@article{arxiv.2308.06641,
  title  = {CMR exploration II -- filament identification with machine learning},
  author = {Duo Xu and Shuo Kong and Avichal Kaul and Hector G. Arce and Volker Ossenkopf-Okada},
  journal= {arXiv preprint arXiv:2308.06641},
  year   = {2023}
}

Comments

ApJ accepted

R2 v1 2026-06-28T11:54:25.052Z