36th Annual Report (2023-24)

185 Coordinator: Professor Shantanu Rastogi ICARD - Department of Physics, DDU Gorakhpur University (Activities from 01 April 2023 to 31 March 2024) AreasofResearch Research PublicationsusingICARDfacilities The ICARD members at Gorakhpur and surrounding areas, including Varanasi and Lucknow, mainly work in the areas of infrared observations of stars, Circumstellar and Interstellar Medium, Molecules of Astrophysical importance, Star clusters, Gravity and Dark Matter, Atmospheric aerosols, Trace gases in planetary atmospheres etc. Amit Pathak, BHU and Shantanu Rastogi, DDUGU, have studied various aspects of astrophysical infrared emission features and their possible carrier polycyclic aromatic hydrocarbon (PAH) molecules. Amit Pathak also participated in JWST data analysis. A study of Globular Clusters using observations from ARIES, Nainital, and GAIA data is being carried out by Apara Tripathi, DDUGU. Alka Mishra, LU is doing theoretical studies on the chemistry of the formation of pre-biotic molecules in the interstellar medium. Rajesh Kumar, DDUGU , studie s gravitational collapse and interacting models of dark matter and dark energy. Analysis of Astrosat observations by Sanjay Pandey, LBS Gonda. Continuous monitoring of atmospheric aerosols at Gorakhpur and study of satellite data on atmospheric trace gases are being carried out by Prabhunath Prasad andShantanuRastogi, DDUGU. 1. A f a r - u l t r a v i o l e t – d r i v e n photoevaporation flow observed in a protoplanetary disk; O. Berne, … A. Pathak, … et al.; Science 383 (6686), 988-992, 2024. 2. C–H Stretch Vibrational Modes: Tracers of Interstellar PAH Geometries?; A. Vats, A. Pathak, T. Onaka, I. Sakon, I. Endo; ACS Earth and Space Chemistry 7 (7), 1350- 1364, 2023. 3. Infrared spectra of protonated and deuteronated C60 in interstellar environments; A. Vats, A. Pathak; Journal of Astrophysics and Astronomy 44 (1), 32, 2023. 4. Rotational spectroscopy of 1-pyrroline: A theoretical study; A. Pandey, A. Pathak, K.A.P. Singh; Journal of Astrophysics and Astronomy 44 (1), 33, 2023. 5. Interstellar branched chainmolecules: A theoretical-rotational study; S. Srivastav, A. Vats, A. Pandey, A. Pathak; Journal of Astrophysics and Astronomy 44 (1), 31, 2023. 6. Theoretical microwave spectra of interstellar nitrogen-containing PAHs; A. Vats, S. Srivastav, A. Pandey, A. Pathak; Physical Chemistry Chemical Physics 25 (28), 19066-19072, 2023. 7. A comprehensive rotational study of astronomical iso-pentane within 84 to 111 GHz; A. Pandey, S. Srivastav, A. Vats, A. Pathak, K.A.P. Singh; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 290, 122299, 2023. 8. An Eternal gravitational collapse in f (R) theory of gravity and their astrophysical implications; A. Jaiswal, R. Kumar, S. K. Srivastava, M. Govender, Chinese Journal of Physics 89, 325-339, 2024. 9. Black hole formation in gravitational collapse and their astrophysical implications, A. Jaiswal, R. Kumar, S. K. Srivastava, M. Govender, S. K. J. Pacif; Physica Scripta, 99(3), 035307, 2024. 10. Dynamics of uniformly collapsing system and the horizon formation; A. Jaiswal, S. K. Srivastava, R. Kumar; International Journal of Geometric Methods in Modern Physics, 20(07), 2350114, 2023. 11. Astrophysical implications of an eternal homogeneous gravitational collapse model with a parametrization of expansion scalar; A. Jaiswal, R. Kumar, S. K. Srivastava, S. K. J. Pacif; The European Physical Journal C, 83(6), 490, 2023. 12. Optical intraday variability of the blazar S5 0716+ 714; T. Tripathi, …S. Rastogi, … et al.; Monthly Notices of the Royal Astronomical Society, 527 (3), 5220- 5237, 2024. 13. Insights of Boundary Layer Turbulence Over the Complex Terrain of Central Himalaya from GVAX Field Campaign, A. Rajput, N. Singh, J. Singh, S. Rastogi; Asia-Pacific Journal of Atmospheric Sciences, 60, 143, 2023. 14. Investigating changes in atmospheric aerosols properties over the Indo- Gangetic Plain during different phases of COVID-19-induced lockdowns, P. Singh, A. Vaishya, S. Rasto g i, Environmental Science and Pollution Research, 30, 100215–100232, 2023. 15. Photometric and kinematic studies of open cluster NGC 1027, A. Tripathi, N. Panwar, S. Sharma, B. Kumar, S. Rastogi, Journal of Astrophysics and Astronomy, 44, 61, 2023. 16. PAH emission features in star-forming regions and late-type stars, R. K. Anand, S. Rastogi, B. Kumar, Journal of Astrophysics and Astronomy, 44, 47, 2023. 1. Dr. Tapas Kumar Das, HRI, Prayagraj, visited ICARD on 11 April 2023 and delivered a popular lecture on 'SupermassiveBlackHoles'. 2. Prof. Shantanu Rastogi, DDU Gorakhpur University, delivered a popular lecture Activities/Outreachprogrammes