nti.media
Bar Council Condemns Sexual Harassment Allegations Against CJI - The Wire      |       ECI bars streaming of web series on Modi till further orders - The Hindu      |       ‘A PM who is afraid of criticism is not a strong PM,’ says Priyanka in Wayanad - Hindustan Times      |       Pragya Singh Thakur and the dangers of India’s emerging majoritarian democracy - Scroll.in      |       IAF Pilot Abhinandan Varthaman To Move Out Of Srinagar In New Posting - NDTV News      |       'Farzi' friendship between BSP and SP will end on May 23: PM Modi - Times of India      |       PM Modi says 'speedbreaker didi' lost sleep after 2 phases; Mamata hits back, says 'PM has fear of losin - Times of India      |       On "The Countdown", Prannoy Roy Analyses JDS-Congress Coalition In Karnataka: Highlights - NDTV News      |       Lok Sabha Election 2019 LIVE updates: EC directs Eros Now to stop streaming web series on life of Narendra Modi - Firstpost      |       Restrictions on Civilian Traffic on Srinagar-Jammu Highway Partially Relaxed - News18      |       Imran Khan's Cabinet reshuffle: Party insiders bite the dust as Pakistan PM centralises power, brings... - Firstpost      |       Trump's Approval Drops Three Points to 2019 Low after Release of Mueller Report - News18      |       Woman killed after shots fired in Londonderry riot, Ireland Police call it terrorist incident - Zee News      |       ‘The search is over!’: Father-child duo clicked at Notre Dame just before fire found - The Indian Express      |       Jet Airways' Employees Seek President's Intervention For Salary Dues - NDTV News      |       HDFC Bank posts record profit in Q4: Key takeaways - Economic Times      |       Media reports on `five-day week` in commercial banks factually incorrect: RBI - Zee News      |       Jet Airways timeline: When and what happened so far - Moneycontrol.com      |       OnePlus 7 launch date to be announced on April 23 - GSMArena.com news - GSMArena.com      |       Realme 3 Pro Ultra HD Mode Will Be Able to Produce 64-Megapixel Images, CEO Madhav Sheth Teases - Gadgets 360      |       Xiaomi Redmi Go review: Decent performance, cameras at Rs 4,499 - The Indian Express      |       ASUS introduces ZenFone Live L2 with upto 2TB of storage - NewsBytes      |       Remove Deepika Padukone and get Kangana Ranaut, says Rangoli to TLLL Foundation in latest tweetstorm... - Hindustan Times      |       Aishwarya Rai Bachchan shares an adorable picture with Abhishek Bachchan on their 12th wedding anniversa - Times of India      |       What the Malayalam movie ‘Lucifer’ tells us about Mohanlal and the cult of the superstar - Scroll.in      |       Here's why Salman Khan will NEVER get married; read on - PINKVILLA      |       RR vs MI Highlights, IPL 2019: Steve Smith powers Rajasthan Royals to five-wicket win over Mumbai Indian - Times of India      |       Live Cricket Score: Delhi Capitals vs Kings XI Punjab, Match 37, IPL 2019 - Cricbuzz      |       Manchester City vs Tottenham Football Highlights: Manchester City climb to top after 1-0 win - The Indian Express      |       Desperate KKR run into revitalised SRH - Cricbuzz      |       NASA Announces Upcoming ISS Crews, Which Won't Fly Commercial - D-brief - Discover Magazine      |       Biomarkers found for lymph node metastasis in oral cancer - The Hindu      |       AI may help develop clean, limitless fusion energy - THE WEEK      |       MicroRNAs in the liver help regulate the feed-fast cycle - The Hindu      |       Quit smoking to lower risk of premature birth - Business Standard      |       Science has found 3 foods that can decrease your prostate cancer risk - Times of India      |       Marijuana users less likely to gain weight despite munchies: Study - Hindustan Times      |       Endogamy may up infertility risk in Indian men, says study - Odisha Television Ltd.      |      

Sci-Tech


Indian scientists play big role in gravitational waves observation

Indian scientists were part of the team of 1200 scientists from 100 institutions worldwide which contributed to LIGO-Virgo discovery paper


indian-scientists-play-big-role-in-gravitational-waves-observation

As many as 40 scientists from 13 Indian institutions, including IIT-Bombay played an important role in the exciting August 17 observation of gravitational waves from a pair of colliding neutron stars, detected for the first time by Laser Interferometer Gravitational-Wave Observatory (LIGO) and Europe's Virgo, officials said.

The Indian scientists were part of the team of 1200 scientists from 100 institutions worldwide, plus 280 physicists and engineers from 20 research groups of Europe, which contributed, among other things, to LIGO-Virgo discovery paper, said Indian Institute of Technology, Bombay (IIT-B) in a statement late on October 16 night.

The Indian scientists contributed to the fundamental algorithms which are crucial to search for inspiralling binaries in noisy date from multiple detectors, in computing waveforms for these signals by solving Einstein's equations, separating astrophysical signals from numerous instruments and environmental artefacts, interpreting the joint gravitational-wave and Gamma-ray observations, tests of Einstein's theory and many other as pets of the data analysis.

From IIT-B, two faculty members of the Department of Physics - Archana Pai and V Gayathri -- are members of the LIGO Scientific Collaboration with complementary expertise. Archana Pai has expertise on gravitational wave multi-detector algorithms and probing astrophysical parameters in the joint detection scenario.

The group interpreted joint-gravitational wave and gamma-ray observations along with K G Arun, (CMI, Chennai) and a PhD student M Saleem (IISER Trivandrum) within the collaboration.

Varun Bhalerao, whose expertise is in the search and study of counterparts to gravitational wave sources, was involved in the EM follow-up efforts: the X-ray searches with AstroSat, along with student Arvind B, a search for optical sources with the Himalayan Chandra Telescope and a radio search with GMRT.

The LIGO has Indian scientists drawn from CMI Chennai, ICTS-TIFR Bangalore, IISER-Kolkata, IISER-Trivandrum, IIT-B, IIT-Gandhinagar, IIT- Hyderabad, IIT-Madras, IPR-Gandhinagar, IUCAA-Pune, RRCAT-Indore, TIFR-Mumbai and UAIR-Gandhinagar.

Besides, astronomers from IISER-Pune, IIT-B, IUCAA-Pune, TIFR-Mumbai, PRL-Ahmedabad, IIT-Hyderabad, IIA-Bangalore, NCRA-TIFR Pune, ARIES-Nainital and IIST-Trivandrum also took part in the electromagnetic follow-up of this event using a variety of telescopes.

Several Indian telescopes like the AstroSat, Giant Metrewave Radio Telescope and Himalayan Chandra Telescope scanned the skies for electromagnetic flashes and the sensitive CZTI instruments on AstroSat helped narrow down the location of the gamma-ray flashes.

Similarly, HCT obtained optical images at locations of neutrinos detected by other telescopes at the same time as the burst and showed that they were unrelated to the gravitational-wave trigger, while GMRT played a crucial role in understanding jet physics and refining models of radio emissions from the remnant formed by the merging neutron stars.

The development is significant considering it happens to be the strongest gravitational-wave signal detected so far, owing to its relatively close location of about 130 million light-years from Earth.

It was also confirmed by a large number of telescopes around the world which studied various forms of radiation from the merger.

"This is a new milestone in the success saga of advanced gravitational wave detectors, which have announced the discoveries of four black hole mergers to date. The first such detection in 2015 led to the awarding of the Nobel Prize in Physics this year," said the IIT-B statement.

Neutron stars are the smallest, densest stars known to exist and are formed when massive stars explode in supernovas. Typical neutron stars are heavier than the sun but have a diameter of just about 20 kilometers: objects so dense that a teaspoon of neutron star material weighs more than Mount Everest.

advertisement