Question: Which of the following is the name of a new giant radio galaxy(GRG), discovered by the team of Astronomers, according to a report published in February 2022?
a) Alcyoneus
b) Demeter
c) Poseidon
d) None of these
Answer: (a)
Related Facts:-
- As par the research paper published on 11 February 2022; a team of galaxy Astronomers discovered a new giant radio galaxy named as Alcyoneus.
- Actually European astronomers reported the detection of a new giant radio galaxy (GRG) as part of the Low Frequency Array (LOFAR) Two-meter Sky Survey (LoTSS).
- The newly discovered Alcyoneus, turns out to be the largest GRG known to date. The finding is detailed in a on the arXiv pre-print repository.
- GRG are radio galaxies with an overall projected linear length exceeding at least 2.3 million light years.
- They are rare objects grown in low-density environments. In general, GRGs are important for astronomers to study the formation and the evolution of radio sources.
- So far, about a thousand GRGs have been detected; out of which only ten exceed 10 million light years in size.
- The largest one is J1420-0545—with a projected proper length of approximately 16 million light years.
- GRGs and also the rest of the megaparsec-scale radio galaxies are assumed to be the largest single-galaxy–induced phenomena in the universe.
By – Rajesh Tripathi