Name: Gulafsha Begom Choudhury
Affiliation: Department of Physics, Assam University, Silchar
Conference ID : ASI2022_502
Title : Variation in the orientation of local magnetic field in low latitude dark clouds with their galactic plane
Authors : Gulafsha B. Choudhury1, a, Himadri. S. Das1, B. J. Medhi2, J. C. Pandey3, S. Wolf4, T. K. Dhar1, and A. M. Mazarbhuiya¬1 1Department of Physics, Assam University, Silchar-788011 (India) 2Department of Physics, Gauhati University, Guwahati 781014, India 3Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital, 263129, India 4University of Kiel, Institute of Theoretical Physics and Astrophysics, Leibnizstrasse 15, 24118, Kiel, Germany agulafsha.97@gmail.com
Abstract Type: Poster
Abstract Category : Stars, ISM and Galaxy
Abstract : The formation of stars in our galaxy is a result of collapse and fragmentation in giant molecular clouds. Bok globules and Lynd’s clouds, being the simplest, isolated molecular clouds (dark clouds) in our galaxy, are considered as the ideal sites for low-mass star formation. In this work, we study the magnetic field morphology of selected Bok globules and Lynd’s clouds situated at low latitude within the galactic latitude (𝑏) range of −10 degrees to 10 degrees. The polarimetric observation of three clouds, CB27, CB24, and CB188, were conducted using the 104-cm Sampurnanand Telescope (ST) located at ARIES, Manora Peak, Nainital, India, during 22-23 Dec. 2017 and 8th May 2019. The results obtained from the observed data are combined with 14 more low latitude clouds (viz., CB3, CB4, CB17, CB25, CB26, CB34, CB39, CB56, CB60, CB69, CB130, CB246, L1014, and L1415) available in literature. From the polarimetric analysis of 17 clouds, we find that the alignment between the envelope magnetic field and galactic plane of the low latitude clouds varies with their galactic position (𝑙, b). We also observe a strong correlation between the longitude and the offset between the orientation of envelope magnetic field and galactic plane.