Second mysterious radio burst detected in space

Scientists Find 13 Mysterious Deep Space Flashes Including 2nd Known'Repeater

Astronomers have revealed details of mysterious signals emanating from a distant galaxy, picked up by a telescope in Canada.

The finding was also presented at the 233rd meeting of the American Astronomical Society in Seattle.

We still don't know what's create this or any other fast radio burst, which only adds to the mystery.

Of more than 60 fast radio bursts detected so far, only one of them has ever repeated.

The telescope was launched a year ago, detecting 13 of the radio bursts nearly immediately, including the repeater that was detected today.

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"By understanding these propagation effects and being able to separate them from the intrinsic characteristics of FRBs, we hope to be able to use FRBs as probes of the electron distribution and magnetic field distribution in the Universe which would tell us about how the Universe built up structures, such as galaxies, galaxy clusters, and so on", explained Tendulkar.

But, until this most recent work, only one repeating FRB, known as FRB 121102, had been observed.

In 2007, an astronomy professor and his student detected a fast radio burst, a phenomenon that has been detected many times in the years since. They're milliseconds in length and are typically thought to come from powerful space shit like black holes or super-dense neutron stars, but some researchers reckon they could even be evidence of advanced alien civilisations.

There's no definitive cause of these fast radio bursts and it's unclear what caused multiple FRBs from the same location.

More likely, CHIME's Shiryash Tendulkar says, is the possibility that they come from a "very strongly magnetized, rapidly spinning neutron star called a millisecond magnetar".

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The CHIME researchers are working with an array of antennas in central New Mexico to pin down the galaxy to which the second repeater belongs.

The presence of a second source of repeat FRBs - as well as the detection during CHIME's brief active pre-commission period - hints at the potential existence of two different types of radio bursts, one that happen only once and another that results in multiple bursts from one spot.

"We have discovered a second repeater and its properties are very similar to the first repeater".

Most previously detected FRBs have had frequencies of around 1,400 megahertz (MHz), but the new ones fell within a range below 800 MHz. Launched in 2017, the project is a collaboration of Canadian scientists from the University of British Columbia, McGill University, the University of Toronto, the Perimeter Institute for Theoretical Physics, and the National Research Council of Canada. 400 Mhz is the lower limit of the CHIME experiment at the moment, so other FRBs at lower frequencies could simply be going undetected.

The majority of the FRBs discovered by the telescope showed signs of "scattering", Phys.org reported - which led the CHIME team to believe the radio bursts are "powerful astrophysical objects".

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"Whatever the source of these radio waves is, it's interesting to see how wide a range of frequencies it can produce".

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