A Special Place for Blog Lovers with a Touch of Science!

Enjoy our special posts in the fields of Earth & Planetary Sciences (EPS Blog) and Social Sciences & Arts (SSA Blog)

A Special Place for Blog Lovers with a Touch of Science!

Mysterious radio bursts from space detected

Credit: Gettyimages

The object, first discovered in 2019, emits frequent and repetitive bursts of radio waves

Astronomers using the U.S. National Science Foundation's Karl G. Jansky Very Large Array, or VLA, as well as other powerful telescopes have found the second known highly active, repeating fast radio burst, or FRB, raising more questions about the nature of these little-understood objects and the role they play in intergalactic space.

The object, in the outskirts of a dwarf galaxy nearly 3 billion light-years from Earth called FRB 190520, emits frequent, repeating bursts of radio waves. VLA observations found that the object also constantly emits weaker radio waves between its frequent bursts.

"These characteristics make this look a lot like the very first FRB whose position was determined -- also by the VLA -- back in 2016," said Casey Law, one of the authors of the paper. "Now we have two, and that brings up some important questions."


FRB - frequent, repeating bursts of radio waves

The differences between the two known FRBs suggest that there could be more than one type of FRB. The combination of repeating bursts and the weaker more persistent emissions of FRB 190520 compared to FRB 121102, the only other confirmed FRB, indicate FRB 190520 might be a different type of FRB or the two entities could be at differing points in their lifecycles.

The estimated distance between Earth and FRB 190520 places the object almost 3 billion light-years away. However, the bursts from the object indicate the distance is closer to 9 billion light-years away.

"This means that there is a lot of material near the FRB that would confuse any attempt to use it to measure the gas between galaxies," said Kshitij Aggarwal, one of the paper's authors. "If that's the case with others, then we can't count on using FRBs as cosmic yardsticks."

The astronomers speculated that as FRB 190520 ages and the dense material surrounding it dissipates, the signals will decline.

Originally published on NSF

×
Stay Informed

When you subscribe to the blog, we will send you an e-mail when there are new updates on the site so you wouldn't miss them.

Simone de Beauvoir on Existentialism & God
Thoughts to reflect on: Cortázar

Related Posts

EPS Recent Posts

14 August 2022
Earth & Planetary Sciences (EPS)
Credit: Wikipedia Carl Linnaeus 1. "I demand of you, and of the whole world, that you show me a generic character... by which to distinguish between Man and Ape. I myself most assuredly know of none." 2. "Nature's economy shall be the base for our ow...
3 Hits
12 August 2022
Earth & Planetary Sciences (EPS)
Credit: Getty images Discovery or Invention – a question without a single answer It's funny how scientists often speak about their new invention as a discovery or vice versa. Well, one thing is to discover a cave with ancient drawings inside and anot...
23 Hits
11 August 2022
Earth & Planetary Sciences (EPS)
Credit: Tiny crabs and other sea life live next to a hot hydrothermal vent on the ocean's floor. The heat and minerals expelled by the vent allow these creatures to survive without sunlight; Getty images Discovery could increase understanding of ocea...
23 Hits