Indian researchers have conclusively refuted a recent claim of the discovery of a radio wave signal from cosmic dawn, the time in the infancy of our Universe when the first stars and galaxies came into existence.
- In 2018 a team of researchers from Arizona State University (ASU) and MIT in the US detected a signal from stars emerging in the early universe using data from the EDGES radio telescope.
- The study published in the journal Nature had created much excitement in the astronomy community around the world. Utilising the indigenously invented and built SARAS 3 radio telescope, researchers from Raman Research Institute (RRI), an autonomous institute of the Department of Science & Technology, refuted this claim.
About SARAS-3
- SARAS (Shaped Antenna Measurement of the Background Radio Spectrum) is a niche high-risk high-gain experimental effort of RRI initiated and led by Prof. Ravi Subrahmanyan, along with Prof. N. Udaya Shankar.
- SARAS-3 is the updated version of SARAS.
- The SARAS 3 radio telescope invented and built by the astronomers at RRI is the first telescope worldwide to reach the required sensitivity.
- Unlike other radio telescopes, it can be deployed on water bodies. Water — being of uniform layers — would be an ideal medium, the group reckoned, to make such a sensitive measurement.
GS TIMES UPSC PRELIMS & MAINS CURRENT AFFAIRS BASED BASICS DAILY ONLINE TEST CLICK HERE
CLICK HERE DAILY CURRENT AFFAIRS QUIZ FOR STATE CIVIL SERVICES
