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For the first time, scientists 'see' black holes swallowing neutron stars


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New Delhi: In a first, an international team of scientists, including researchers from India, have confirmed the detection of a collision between a black hole and a neutron star, by analysing the gravitational waves created by two such events in January last year.
Gravitational waves are ripples in the space-time fabric created by extreme events, such as the collision of two blackholes or two neutron stars. While gravitational waves from several such collisions have been detected since the first discovery in 2015, they have all been a result of collision between similar cosmic bodies.
However, now the team has determined that these waves detected last January were a result of a neutron star being swallowed whole by its black hole partner. ....

United States , New Delhi , Tamil Nadu , Andhra Pradesh , Îe De France , West Bengal , Poulomi Banerjee , Astrid Lamberts , Ozgrav Swinburne , Carl Knox , Jupiter Mars , Bhooshan Gadre , Chennai Mathematical Institute , Indian Institute Of Science Education , University Centre For Astronomy , Research Pune , Institute For Plasma Research In Gandhinagar , International Centre For Theoretical Sciences , Max Planck Institute For Gravitational Physics , Research Kolkata , India Scientific Collaboration , Inter University Centre , International Centre , Theoretical Sciences , Indian Institute , Science Education ,

This is a wonderful time to work on black holes: astrophysicist Parameswaran Ajith


The cosmic bodies have come out of their historical isolation to take centrestage in modern astrophysics, says the recipient of the inaugural young scientist award instituted by The World Academy of Sciences
Parameswaran Ajith, 40, a Bengaluru-based astrophysicist who specialises in the study of detecting gravitational waves, was chosen as the first recipient of The World Academy of Sciences-Chinese Academy of Sciences (TWAS-CAS) Young Scientist award for Frontier Science. He talks about his prize, the excitement of black holes, and about how he chose to become a scientist. Excerpts:
The award citation says you have “.pioneered a method to model the expected gravitational-wave signals from colliding binary black holes.” In layman’s terms, could you explain the principle of this method? Is it the only method for detecting wave signals or is it part of an algorithm of detection? ....

Sanjeev Dhurandhar , Kip Thorne , Caltech Rana Adhikari , Parameswaran Ajith , Alessandra Buonanno , Thibault Damour , Bala Iyer , Kerala Sasthra Sahitya Parishad , World Academy Of Sciences , International Centre For Theoretical Sciences , Mahatma Gandhi University , Max Planck Institute For Gravitational Physics , Chinese Academy Of Sciences , World Academy , Sciences Chinese Academy , Young Scientist , General Theory , Kerala Sasthra Sahitya , Rana Adhikari , Max Planck Institute , Gravitational Physics , Event Horizon Telescope , United States , International Centre , Theoretical Sciences , Jacob Koshy ,