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Study by Indian Astronomers provides clues to explosion mechanism of supernovae that are key measure of cosmological distances


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New Delhi: In 2011, the Nobel Prize was awarded to three scientists for discovering that the Universe is expanding at an ever-accelerating rate 
through observations of distant supernovae. Now a team of Indian astronomers observing such distant supernovae have narrowed down the possible mechanisms of explosion of such supernovae which provide key measures of cosmological distances.
Their detailed study of a supernova called SN 2017hpa, a particular type of supernovae called I a supernova, which exploded in 2017 helped narrow down the explosion mechanism of the supernovae by observations of unburned carbon in the early phase spectra.
The explosive death of a star as a supernova is one of the most spectacular and catastrophic events in the Universe. Type Ia supernovae are the result of explosions of white dwarfs that exceed their mass beyond the Chandrasekhar limit through accretion of matter. Their homogeneous nature makes them extremely good standardizable ....

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Bihar: Three police officers succumb to COVID-19


ANI |
Updated: Apr 19, 2021 13:58 IST
Patna (Bihar) [India], April 19 (ANI): Three police officers have succumbed to COVID-19 in two days in Bihar s Patna, confirmed Bihar Police Association Chief Mrityunjay Singh on Monday.
The deceased officers have been identified as Inspector Trilok Nath Rai posted at Motihari and Inspector of Special Branch Jaidev Bhagat, Both have died on Sunday. While another Inspector Raj Kishor Prasad has lost his life today (Monday) due to the lack of Oxygen.
The BPA president in a letter addressed to the Director General of Police also urged the department to arrange beds in the hospitals for the policemen who infected for the virus and their family members. ....

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