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EXPLOSION MECHANISM OF SUPERNOVA (SPACE SCIENCE)
- May 5, 2021
- Posted by: Sushil Pandey
- Category: Current Affairs Daily Blogs Free Resources PIB Resources
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![](https://adhyayanias.com/wp-content/uploads/2021/05/supernova-710x366.jpg)
SPACE SCIENCE (PIB)
Science (Astronomy)
Explosion mechanism of supernovae
Why in News?
Study by Indian Astronomers provides clues to explosion mechanism of supernovae (April 28, 2021)
The Study
- A team of Indian astronomers observed distant supernovae, and narrowed down the possible mechanisms of explosion of such supernovae which provide key measures of cosmological distances.
- The study was on a supernova called SN 2017hpa, a particular type of supernovae called Ia supernova, which exploded in 2017 helped narrow down the mechanism of the supernovae explosion by observations of unburned carbon in the early phase spectra.
- (2011) Nobel Prize was awarded to three scientists for discovery of Universe expanding at an ever-accelerating rate through observations of distant supernovae.
About
- Supernova is the explosive death of a star the most spectacular and catastrophic events in the Universe ever to human eyes.
- Type Ia supernovae are the result of explosions of white dwarfs that exceed their mass beyond the Chandrasekhar limit through accretion of matter.
- Most SNeIa are of Homogeneous nature; makes them extremely good standards to measure cosmological distances. But a good fraction of these events show diversity in both their light curve as well as spectral properties.
- The explosion mechanisms which create these supernovae (SNe), and the exact nature of their progenitor systems (star which is at the origin of a supernova phenomenon) are not clearly understood.
![](https://adhyayanias.com/wp-content/uploads/2021/05/image-1-edited.png)
Fig.2 Early (pre-maximum) phase spectra of supernova SN 2017hpa obtained using the 2m Himalayan Chandra Telescope, IAO, Hanle. The spectral feature at 6580 A due to unburned carbon is marked in the spectrum. |
![](https://adhyayanias.com/wp-content/uploads/2021/05/image-8-edited.png)
Source: Press Information Bureau
source of featured image: forbes
Author:sushil pandey
I am Educator , who teaches to aspirants of competition exam of UPSC/CSE, State PCS and all other one day exam .I have a More than 12 year teaching experience and career counselling in diverse fields.