Note4Students
From UPSC perspective, the following things are important :
Prelims level: Fast Radio Burst (FRB)
Mains level: Not Much
A strange radio signal (called Fast Radio Bursts) has been detected in a galaxy several billion light-years from Earth, a recent study claimed.
What is an FRB?
- The first FRB was discovered in 2007, since when scientists have been working towards finding the source of their origin.
- Essentially, FRBs are bright bursts of radio waves (radio waves can be produced by astronomical objects with changing magnetic fields).
- Its durations lie in the millisecond scale, because of which it is difficult to detect them and determine their position in the sky.
Who discovered it?
- The X-ray portion of the simultaneous bursts was detected by several satellites, including NASA’s Wind mission.
- Further, a NASA-funded project called Survey for Transient Astronomical Radio Emission 2 (STARE2) also detected the radio burst.
Why are they significant?
- First noticed in 2018 by the Canadian observatory the waves have created ripples across the globe for one reason — they arrive in a pattern.
- This gave birth to theories that they could be from an alien civilization.
- Initially, it was believed that the collision of black holes or neutron stars triggers them.
- But the discovery of repeating FRBs debunked the theory of colliding objects.
UPSC 2023 countdown has begun! Get your personal guidance plan now! (Click here)
Get an IAS/IPS ranker as your 1: 1 personal mentor for UPSC 2024
