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Indian Origin Scientist Kailash Sahu and team in US used Albert Einstein’s Theory to Weigh Stars

Kailash Chandra Sahu, an Indian-origin astronomer, led a group of scientists to weigh white dwarf stars using Einstein's General Theory of Relativity.

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Kailash Chandra Sahu
The Hubble Telescope hovering in space. Wikimedia
  • A team of scientists in the US has successfully weighed the mass of a white dwarf star using Einstein’s predictions and theory
  • The group of scientists was led by an Indian-origin astronomer Kailash Chandra Sahu
  • This is the first time that the weight of a star has been measured using Einstein’s theory

US, June 10, 2017: Albert Einstein’s General Theory of Relativity is a century old. Yet, every year new developments in scientific knowledge are emerging through this basic formulated theory by Einstein.

The theory of relativity has once again provided development in our knowledge of the cosmos. In the US, a group of scientists has measured the mass of a white dwarf star by using the century-old theory.

The group was led by an Indian-origin astronomer Kailash Chandra Sahu at the Space Telescope Science Institute. The team used the Hubble Space Telescope to calculate the mass. Sahu is also the lead author of the research paper.

ALSO READ: Albert Einstein’s Century-old Prediction Comes True: Third Gravitational Waves detected by Scientists

The essence of the study lies in the technicality used by the scientists. They observed the white dwarf star as it passed by a distant star. When the two stars closely aligned, scientists analyzed the deflection in the light of the distant star caused by the gravity of the white dwarf star. The deflection in the sky would appear offset by 2 milliarcseconds!

The deflection may be incredibly tiny but it helped the scientists calculate the dwarf’s mass.

Einstein had hypothesized that a ray of light from a different star passing by an object would bend due to the gravity pull of the passing object. The study is published in the journal called Science.

– by Saksham Narula of NewsGram. Twitter: @Saksham2394

Next Story

Study Reveals Solar Cells Can Retain Most Of Their Power Conversion Efficiency in Near Space

In the study, researchers from China's Peking University sent the devices fixed with PSCs into near space on a high-altitude balloon.

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solar energy
Perovskite solar cells (PSCs) are known for their potential of achieving higher efficiency and low production costs compared to traditional silicon solar cells. Pixabay

Chinese researchers have found that solar cells can retain most of their power conversion efficiency in near space, providing perspectives on the cells’ future application in space.

Perovskite solar cells (PSCs) are known for their potential of achieving higher efficiency and low production costs compared to traditional silicon solar cells.

These cells also have great potential for developing the new-generation energy technology for space application, but little research has been done to test the stability of PSCs in the extreme space environment, Xinhua news agency reported.

In the study, researchers from China’s Peking University sent the devices fixed with PSCs into near space on a high-altitude balloon.

energy
These cells also have great potential for developing the new-generation energy technology for space application, but little research has been done to test the stability of PSCs in the extreme space environment, Xinhua news agency reported. Piixabay

The balloon rose to near space at an altitude of 35 km, a region above Earth’s atmosphere where there is only a trace amount of moisture and ozone.

The region, considered to have “air mass zero” contains no atmospheric attenuation of solar radiation and therefore several high-energy particles and radiation, such as neutrons, electrons and gamma rays, originate from the galactic cosmic rays and solar flares.

solar cells
Chinese researchers have found that solar cells can retain most of their power conversion efficiency in near space, providing perspectives on the cells’ future application in space.
Pixabay

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According to the findings, one type of PSCs used in the study retained more than 95 per cent of its initial power conversion efficiency during the test, the researchers reported in the journal Science China Physics, Mechanics and Astronomy.

They said the study is expected to play a crucial role in the future stability research of PSCs. (IANS)