IIT-H scientists chart interstellar weather

IIT-H

Excel India Desk

 

IIT Hyderabad scientists within InPTA have paved the way to charting interstellar weather. This is a unique achievement of IIT- H which focuses on basic science and scientific research besides technologies.

The Indian Pulsar Timing Array (InPTA) recently published its first official Data Release. Prof Shantanu Desai from the Physics department of IIT Hyderabad, PhD student Aman Srivastava, B.Tech student Divyansh Kharbanda, and IITH alumnus Raghav Girgaonkar have co-authored this research article which got published recently in the publications of the Astronomical Society of Australia.

The data release stems from three and a half years of observation using the upgraded Giant Metrewave Radio Telescope (uGMRT) near Pune. The Indo-Japanese team of thirty-eight radio-astronomers measures delays in the arrival of radio pulses from special types of neutron stars called millisecond pulsars, which are crucial for the discovery of low-frequency gravitational waves, according to a media release from IIT-H.

 

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InPTA has joined hands with similar teams from the USA, Europe and Australia to detect these tiny, elusive ripples in spacetime, named nanohertz gravitational waves.

Complementing the team’s efforts, Prof B S Murty, Director, IITH, saidThe research which we are doing should motivate young students to take up careers in science and engineering. The InPTA collaboration involves both Indian and Japanese scientists working at multiple institutes and people at all levels (faculty, PhD students, postdocs, UG students, Engineers, Computing professionals etc.) who have actively contributed towards it is such an amazing example.”.

“This research helps us better understand our Universe and our role in it. However, one should remember wifi (ubiquitous) in daily life was a spin-off of research in radio astronomy while searching for radio bursts from primordial black holes. The precision measurements we are making use state of the art electronics and communication systems and also involve the application of novel data analysis and data mining tools. These could have potential industrial applications”, added Prof Shantanu.

The authors explain, “The universe is filled with gravitational wave background holding answers to deep secrets of nature. The waves that we detect now are strong but short-lived. We are listening to large waves crashing loudly upon the seashore, whereas space-time is continually brimming with tiny ripples. Imagine a symphony where high-pitched sections blare at crescendos while bass sections play the fundamental progressions throughout.

The interplay of gravitational waves in the universe is similar to a symphony played by nature. We have been eavesdropping upon the crescendos while a persistent buzz forms the basis of this cosmic melody. These waves are generated by supermassive black hole binary pairs orbiting around each other for millions of years during their courses of collision.

The primary hindrance in their detection is the vast ocean of interstellar medium lying in between. The InPTA data is critical for charting this interstellar ‘weather’ and paving the way to the discovery in the near future.”

Rama Krishna Sangem

Ramakrishna chief editor of excel India online magazine and website

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