More Mysterious Stuff Coming From Deep Space


They said the finding provides new details about the "puzzling" yet "brief" radio energy from outside the galaxy. They are also more than a billion parsec away from each other. "We would like to know what kinds of objects these are and how they are related to other explosions and objects that we know of (gamma-ray bursts, supernovae, neutron stars etc)", Tendulkar said. We can't track the vast majority.

Scientists said that they have observed blasts of radio signals coming from deep in space.

Now, astronomers have found a second.

The Canadian Hydrogen Intensity Mapping Experiment (CHIME) is a radio telescope created to answer major questions in astrophysics and cosmology, including the phenomena of Fast Radio Bursts (FRBs), fleeting and intense radio bursts with an unknown origin. "When the first repeater was found, we didn't know if that was a unique object in the universe or if there was a class of these things, or if maybe all of the fast radio bursts actually were repeated, but numerous bursts were too faint for our telescopes to pick up".

The new discovery was made using the Canadian Hydrogen Intensity Mapping Experiment (Chime), in British Columbia's Okanagan Valley. In fact, dozens have been detected so far.

Moreover, the CHIME team's new discoveries suggest that FRBs are probably far more common than current technology is able to reflect.

The CHIME telescope has four cylindrical reflector dishes that cover an area equal to two football fields.

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"Until now, there was only one known repeating FRB".

In all the researchers spotted some 13 of the bursts in just a three week period, offering a vast new trove of data for the scientists hunting for their source. Currently, the origin of the signals is unknown.

But that's more or less the limit of our knowledge of FRB 121102. Only 60 FRB sources have been detected, including the 13 announced today.

The second is that building a database of these events - and especially repeaters, which can be traced to their home galaxies - will help construct statistics that will narrow down the conditions from which FRBs originate. That repeating FRB seemed to have originated from a galaxy located about 2.5 billion light-years from Earth. However, one of those bursts, the repetitive fast radio burst, is the second repetitive one ever discovered by researchers.

Most of the FRBs previously detected had been found at frequencies near 1400 MHz, well above the Canadian telescope's range of 400 MHz to 800 MHz.

At least seven were recorded at 400 megahertz (Mhz) - the lowest frequency to date.

Another interesting twist has to do with the radio frequencies of the newly detected bursts. "There are some models where intrinsically the source can't produce anything below a certain frequency", IANS quoted team member Arun Naidu of McGill University as saying.