Scientists have detected the brightest pulsar ever observed outside the Milky Way, revealing the true identity of a far-off luminous object previously mistaken for a distant galaxy.
radio telescope array in Australia, and the find was made possible by surveying the sky for polarized pulsar emissions – a technique researchers liken to the astronomical equivalent of wearing polarized sunglasses.
According to the researchers, PSR J0523−7125 is about 10 times more luminous than any other extra-galactic pulsars previously observed. So why was it missed before now?The answer has to do with how pulsars are detected. Traditionally, pulsar search procedures look for periodic pulses – the lighthouse-like flickering effect as the pulsar emits radiation in short, observable bursts.
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