| Name: | Gulafsha Begom Choudhury |
| Affiliation: | Department of Physics, Assam University, Silchar |
| Conference ID : | ASI2024_837 |
| Title : | Probing the magnetic field orientation of low latitude dark clouds and its correlation with galactic longitude |
| Authors : | Gulafsha B. Choudhury1, B. Goswami1, Himadri S. Das1, B. J. Medhi2, J. C. Pandey3 |
| Authors Affiliation: | 1 Department of Physics, Assam University, Silchar-788011 (India)
2 Department of Physics, Gauhati University, Guwahati 781014, India
3 Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital, 263129, India
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| Mode of Presentation: | Oral |
| Abstract Category : | Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Abstract : | The geometry of the magnetic field in molecular clouds plays a vital role in star formation processes, and hence it is important to study the magnetic field in both the envelope and core region of the clouds. Polarimetric analysis can probe the magnetic field in both regions. We present the optical R-band polarimetry of two low latitude Lynd's clouds L1495 (l=168 degrees, b=-16.12 degrees) and L1498 (l=170 degrees, b=-18.99 degrees) conducted with AIMPOL at Aryabhatta Research Institute of Observational Sciences, Nainital, India. Results obtained from the polarimetric analysis reveal that the local magnetic field of these two clouds are oriented along the galactic plane with θ_off = 7.2 degrees for L1495 and θ_off = 6 degrees for L1498, where θ_off is the offset between the orientation of the local magnetic field of the cloud and the galactic plane. θ_off values for two clouds are calculated using an empirical relation obtained by Choudhury et al. (2022) which relates a correlation between the orientation of the local magnetic field and the galactic longitude of low-latitude star-forming regions. The calculated values obtained from the relation are 6.2° for L1495 and 5.9° for L1498, showing good agreement with observed results.
Key words: polarization – (ISM:) dust – extinction – ISM: magnetic fields – galaxies: magnetic fields
References:
* Choudhury, G. B., Das, H. S., Medhi, B. J., Pandey, J. C., Wolf, S., Dhar, T. K., & Mazarbhuiya, A. M., 2022, RAA, 22, 7
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