When an astronomer discovered a brief bolt of energy that could travel billions of light-years, he was astonished. Then decades went by without evidence of another
I was skeptical. It showed in this sentence from my report for that broadcast: “Sometimes, what seems like a remarkable scientific discovery turns out to be an error in the data.”
Now at Trinity College Dublin, Keane was conducting research at the Parkes Observatory when Sarah Burke-Spolaor reported radio astronomical signals there—and Keane was pretty sure that was rubbish. There were, however, some hopeful signs that FRBs were real. In 2011 there was a report of a second one, but doubters were quick to point out that this FRB came from the same Parkes radio telescope that the Lorimer burst and the perytons came from. In 2013 four more were found, again from Parkes.in Puerto Rico. More discoveries started trickling in from other telescopes on a somewhat regular basis.
“We don’t necessarily understand the mechanics of how this magnetar in our own galaxy produced this radio burst as well as we’d like,” Chatterjee says. “But we certainly understand that this is one class of FRB emission.”that bothered me from the outset about FRBs was how astronomers could be so sure FRBs were coming from a distant galaxy. The answer lies in something called the dispersion measure.
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