quinta-feira, 5 de janeiro de 2017

Fonte de sinais de rádio descoberta (FRB)

Mais um FRB (radio bursts) detectado, e atribuído a uma galáxia que está... Longinho:
http://www.bbc.com/news/science-environment-38502607


Citando:
"The first FRB was discovered in 2007, in archived data from the Parkes Radio Telescope in Australia. Astronomers were searching for new examples of magnetised neutron stars called pulsars, but found a new phenomenon - a radio burst from 2001. Since then, 18 FRBs - also referred to as "flashes" or "sizzles" - have been found in total."
(...)
"Unlike all the others, this FRB - discovered in 2012 - has recurred several times.
"When we reported last year that one of these objects was repeating, that - in one go - knocked out about half of those models, because for this one source, at least, we knew it couldn't be explosive. It had to be something where the engine that produced this survived for the next flash."
In 83 hours of observing time over six months in 2016, the VLA detected nine bursts from FRB 121102."

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