Saras 3 Telescope

Context

Using the data from the SARAS 3 telescope, astronomers and researchers have been able to determine properties of radio luminous galaxies formed just 200 million years post the Big Bang, a period known as the Cosmic Dawn.

Findings

Data from SARAS 3 was used by scientists of Raman Research Institute to throw light on the energy output, luminosity, and masses of the first generation of galaxies that are bright in radio wavelengths.
The results from the SARAS 3 telescope are the first time that radio observations of the averaged 21-centimetre line have been able to provide an insight into the properties of the earliest radio loud galaxies that are usually powered by supermassive black holes.
Earlier, scientists from the Research Institute used the same data to reject claims of the detection of an anomalous 21-cm signal from Cosmic Dawn made by the EDGES radio telescope developed by researchers from Arizona State University (ASU) and MIT, USA.

Saras 3 Telescope

Shaped Antenna measurement of the background Radio Spectrum-3 (SARAS-3) telescope is an indigenously built telescope built by Raman Research Institute.
It was deployed over Dandiganahalli Lake and Sharavathi backwaters in Karnataka.
This work takes forward the results from SARAS-2, which was the first to inform the properties of earliest stars and galaxies.

SARAS experiment

SARAS is a niche high-risk high-gain experimental effort of Raman Research Institute..
It was a courageous attempt to design, build and deploy in India a precision radio telescope to detect extremely faint radio wave signals from the depths of time, from our “Cosmic Dawn”

Cosmic Dawn

Cosmic Dawn refers to a period when the first stars, galaxies and blackholes were first formed in the universe.
It dates back to 50 million to one billion years from the big bang theory.

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