PIRSA:25030155

Video URL

https://pirsa.org/25030155

Arcs, Cavities, and Outflows: The Dynamic Drama of Star Formation

Basu, S. (2025). Arcs, Cavities, and Outflows: The Dynamic Drama of Star Formation. Perimeter Institute for Theoretical Physics. https://pirsa.org/25030155

Basu, Shantanu. Arcs, Cavities, and Outflows: The Dynamic Drama of Star Formation. Perimeter Institute for Theoretical Physics, Apr. 15, 2025, https://pirsa.org/25030155 

          @misc{ scivideos_PIRSA:25030155,
            doi = {10.48660/25030155},
            url = {https://pirsa.org/25030155},
            author = {Basu, Shantanu},
            keywords = {Cosmology},
            language = {en},
            title = {Arcs, Cavities, and Outflows: The Dynamic Drama of Star Formation},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2025},
            month = {apr},
            note = {PIRSA:25030155 see, \url{https://scivideos.org/pirsa/25030155}}
          }

Shantanu Basu Western University

Talk numberPIRSA:25030155
DOI10.48660/25030155
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

We are now firmly within the ALMA-inspired era of star formation studies. We have abundant high sensitivity and resolution observations of star-disk-outflow systems as well as the ability to perform complex high-resolution plasma astrophysics simulations of their formation. I review recent three-dimensional nonideal MHD simulations that reveal surprising new insights into the role of magnetic fields and magnetic field dissipation in creating outflows, arcs, and cavities on scales of hundreds to thousands of au. Magnetic fields are responsible for a complex inflow-outflow structure around a protostar. I end the talk with results that may answer the longstanding big question in star formation studies: what stops the mass infall on to a protostar?