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Landmark Achievement: 6 Astronomers from India Discover Giant Radio Galaxies (GRGs)

A team of 6 astronomers from India have reportedly discovered Giant Radio Galaxies (GRGs) which are the largest known galaxies in the universe

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Giant Radio Galaxies
Out of total known galaxies, only 300 have been classifies as Giant Radio Galaxies. Wikimedia
  • Six astronomers from India have recently discovered the largest galaxies known to the universe, called Giant Radio Galaxies (GRGs)
  • Only 300 out of total number of galaxies are classified as Giang Radio Galaxies
  • The research was successful taking into account the research of last 6 decades of radio astronomy

July 06, 2017: A team of six astronomers from India has made a landmark discovery. Using the research from last six decades of radio astronomy and a 20-year-old survey, the team has detected the existence of Giant Radio Galaxies (GRGs).

Giant Radio Galaxies are known to be the largest galaxies in the universe. The reason for their large size is unknown as of now. As one of the lead researcher, Pratik Dabhade from Inter-University Centre for Astronomy and Astrophysics (IUCAA), explains in the study, “The huge size of GRGs has defied any theoretical explanation so far. Our work will help in understanding how these galaxies grow to be so large.”

The other researchers also involved include Joydeep Bagchi (IUCAA), Mamta Pommier (CNRS Observatoire de Lyon), Madhuri Gaikwad (Max Planck Institute Bonn), Shishir Sankhyayan (IISER Pune) and Somak Raychaudhary (IUCAA).

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Their research has been published in Journal Monthly Notices of the Royal Astronomical Society. The Giant Radio Galaxies are found co-existing with a supermassive black hole at the core of center of the nucleus. High energy particles are discharged at the speed of light which emerges into two giant radio lobes.

The Giant Radio Galaxies are known to be the last stage of evolution of galaxies, mainly because of their massive size. However, these galaxies are visible only through radio telescopes.

– by Saksham Narula of NewsGram. Twitter: @Saksham2394

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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)