BIG DIWALI SALE - Flat 70% Discount On All Pendrive / Android Courses, Valid Till 30th Oct'19. For More Call On 9354229384, 9354252518, 9999830584, 8077211847.

Current Affairs

FRB 180924: Astronomers for first time determine source of Fast Radio Bursts

Date: 01 July 2019 Tags: Space

A team of international astronomers for the first time have determined the precise source of a single/ one-off fast radio bursts (FRBs) of cosmic radio waves. The signal has been named FRB 180924 after date of detection. It is believed to be originated in the outskirts of Milky Way-sized galaxy roughly 3.6 billion light-years from Earth. Pinning down exact source of this signal will help scientists to finally understand what causes these one-off FRBs.

Significance: It's only the second fast radio burst (FRB) ever to have been traced to location. The first such signal, called FRB 121102. It also special case, because it bursts repeatedly and locating exact source of one-off FRB presented a much more difficult challenge.

Fast radio bursts (FRBs)

They are intense bursts of radio emission that have durations of milliseconds. They exhibit characteristic dispersion sweep of radio pulsars. Their flash is for only micro-instant but can emit as much energy in millisecond as the Sun does in 10,000 years. The first FRB was discovered in 2007 ad so far over 80 have been detected.

Reasons for FRBs: The exact cause creating these high-energy surges of long waves at far end of the electromagnetic spectrum is subject of intense debate. However, scientists now agree that they originate in far away galaxies. Until FRBs are localised to host galaxy, or confirmed at other wavelengths, their origin will remain controversial.