Deciphering Cosmic Dawn: Mysteries from the Invisible Universe_Cosmology Talk_Dr Hamsa Padmanabhan скачать в хорошем качестве

Deciphering Cosmic Dawn: Mysteries from the Invisible Universe_Cosmology Talk_Dr Hamsa Padmanabhan

AASTRO Kerala hosts monthly public lectures in Astronomy, Cosmology, Astrophysics, Space Science and allied subjects where people from all backgrounds can come together to learn about the cosmos. These enlightening gatherings provide an opportunity to explore the wonders of space in a friendly and approachable setting. In the 2023 August Edition of our Monthly Public Lecture, eminent cosmologist Dr.Hamsa Padmanabhan delivered a talk on the topic 'Deciphering Cosmic Dawn: Mysteries from the Invisible Universe' The epoch of ‘Cosmic Dawn’, when the first stars and galaxies were born — about a hundred million years after the Big Bang — is considered the ‘final frontier’ of research in cosmology today. This period is primarily accessible due to radiation from hydrogen — the most abundant element in the Universe — which emits at a wavelength of 21 cm, in the radio band. An exquisite investigation of the Cosmic Dawn will soon become possible with an emerging technique called intensity mapping (IM), which measures the integrated 21 cm emission from all sources, using large arrays of radio telescopes. Unprecedented amounts of data from the biggest such facilities around the world will soon help to answer fundamental questions about our cosmos, from a deeper understanding of Einstein’s theory of gravity, to whether we are alone in this vast expanse of the universe. The presentation did discuss the groundbreaking progress being made in this fascinating field and its prospects for the future. Dr.Hamsa is an established scientist in the field of astronomy in general and cosmology in particular. She is currently working as Collaboratrice Scientifique II and principal investigator of the Swiss National Science Foundation (SNSF) Ambizione Grant at the University of Geneva, Switzerland. She follws the legacy of her father, late Dr.Thanu Padmanabhan, a celebrated Indian theoretical physicist and cosmologist whose research spanned a wide variety of topics in gravitation, structure formation in the universe and quantum gravity.