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Fast Radio Burst from Deep Space With Steady 16-day Cycle Observed

Posted by on February 14, 2020 in Earth & Space, Sci-Tech with 0 Comments

Credit: CC0 Public Domain

By Bob Yirka | Phys.org

A large team of space scientists working in Canada has found evidence of a fast radio burst with a steady 16-day cycle. The team has published a paper describing their findings on the arXiv preprint server.

Fast radio bursts (FRBs) are, as their name suggests, short bursts of radio emissions that are detected by space scientists listening for signals from . They appear randomly for a very short period of time, making them difficult to find and very hard to study. One was first observed back in 2007—since that time, several others have been observed—but only 10 of them have been found to repeat themselves. In this new effort, the researchers have observed the first instance of a repeating FRB, which repeats in a steady cycle.

Despite a lot of effort, space scientists do not know the source of FRBs, and have been developing theories—some suggest they might be nothing more than the noise created when two stars collide. Some non-professionals have suggested they are messages from aliens.

In this new effort, the researchers were studying data from the radio telescope used by the Canadian Hydrogen Intensity Mapping Experiment. When they spotted the FRB, they traced back 400 observations made using the telescope and determined that the FRB repeated in a steady, 16-day pattern. The FRB signals were observed to arrive approximately once an hour for four days and then suddenly cease—only to start up again 12 days later.

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