Which one of the following statements is correct regarding LOFAR (Low

Which one of the following statements is correct regarding LOFAR (Low Frequency Array) ?

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It is the world's most powerful radio antenna.

It is a space technology launched by NASA to discover exoplanets.

It is an arrangement of satellites in space for the purpose of creating Satellite Navigation System.

It is a wireless communication technology for 5G services.

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UPSC CDS-1 – 2022

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LOFAR (Low Frequency Array) is a large network of radio telescopes spread across several countries in Europe, making it one of the most powerful radio antennas for observing very low radio frequencies.

It is not a single antenna but an array of antennas that work together using advanced data processing to synthesize a large effective aperture, giving it high sensitivity and resolution.

LOFAR is used for various astronomical studies, including observing the early universe, pulsars, cosmic rays, and solar activity. It operates in the frequency range of 10-240 MHz.

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