Abstract Details
| Name: Vineet Rawat Affiliation: Physical Research Laboratory Conference ID: ASI2024_332 Title : Exploring the interplay of magnetic fields, gravity, and turbulence in star formation at the hub of the GMC G148.24+00.41 Authors and Co-Authors : Vineet Rawat1,2, M. R. Samal1, Chakali Eswaraiah3, Jia-Wei Wang4, Davide Elia5, Sandhyarani Panigrahy3, A. Zavagno6,7, R. K. Yadav8, D. L. Walker9, J. Jose3, D.K. Ojha10, C.P. Zhang11,12, S. Dutta4 Abstract Type : Oral Abstract Category : Stars, Interstellar Medium, and Astrochemistry in Milky Way Abstract : The relative importance of magnetic fields, turbulence, and gravity in the early phases of star formation is still not well understood. We studied the initial stages of star formation and the interplay between magnetic fields, turbulence, and gravity at the hub of the Giant Molecular Cloud G148.24+00.41, using high-resolution dust polarization observations at 850 microns. These observations were conducted using the SCUBA-2/POL-2 instrument at the James Clerk Maxwell Telescope (JCMT). We investigate the magnetic field characteristics of two specific regions within this area: the central clump (CC) and the northeastern elongated structure (NES). We determine the magnetic field strengths of CC and NES to be around 24 μG and 20 μG, respectively. In this talk, I will show the comparison of intensity gradients and local gravity vectors with the magnetic field orientations that show the influence of local gravity in driving the gas collapse, and accretion flows towards the clump. I will discuss the gravitational stability and the Alfvenic state of these regions. The Virial analyses and the overall dominance of gravity in comparison to kinetic and magnetic energies in the energy budget of the studied regions of G148.24+00.41 will be discussed. I will also present a comparison with the clumps of other hubs in the context to show the upper hand of gravity over other factors. |