Kamis, 05 November 2020

Mysterious space signal traced to ‘zombie’ in our galaxy - The Kingston Whig-Standard

A handout photo released on April 25, 2018 by the European Space Agency shows Gaia's all-sky view of our Milky Way Galaxy and neighbouring galaxies, based on measurements of nearly 1.7 billion stars. The map shows the total brightness and colour of stars observed by the ESA satellite in each portion of the sky between July 2014 and May 2016. Brighter regions indicate denser concentrations of especially bright stars, while darker regions correspond to patches of the sky where fewer bright stars are observed. The colour representation is obtained by combining the total amount of light with the amount of blue and red light recorded by Gaia in each patch of the sky. (AFP PHOTO/EUROPEAN SPACE AGENCY/GAIA /DPAC)

Researchers have traced a mysterious radio signal to a point within our own galaxy with the source appearing to be more zombie than alien.

The signal detected in late April appears to have come from a distant object inside our Milky Way galaxy, according to three research papers published in the journal, Nature, on Wednesday.

The papers lay out how several telescopes, including the CHIME facility in Canada, all heard the millisecond-long signal April 27 to 28.

Researchers gathered multiple radio and X-ray readings from the event and then compared notes to trace the signal’s origin to our own cosmic neighbourhood.

The millisecond-long signal, known as a fast radio burst (FRB), is one of hundreds detected from space over the last 13 years.

Most of the brief, occasionally repeating bursts, have come from distant parts of the universe, leaving scientists puzzled as to their exact origin point.

This latest signal is the first one that scientists have been able to “hear” with clarity.

“Given the source distance, this is the most luminous radio burst ever detected in our own galaxy,” CHIME researcher Daniele Michilli told BBC News.

FRBs were first detected in 2007 and have been one of the hottest topics in astronomy ever since.

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2020-11-05 17:40:18Z
CBMiggFodHRwczovL3d3dy50aGV3aGlnLmNvbS9uZXdzL3dvcmxkL215c3RlcmlvdXMtc3BhY2Utc2lnbmFsLXRyYWNlZC10by16b21iaWUtaW4tb3VyLWdhbGF4eS93Y20vZjIwYzJmYjYtMDFiNC00ZjZmLThiZjYtNWIzYzYyMzNmZTcz0gGGAWh0dHBzOi8vd3d3LnRoZXdoaWcuY29tL25ld3Mvd29ybGQvbXlzdGVyaW91cy1zcGFjZS1zaWduYWwtdHJhY2VkLXRvLXpvbWJpZS1pbi1vdXItZ2FsYXh5L3djbS9mMjBjMmZiNi0wMWI0LTRmNmYtOGJmNi01YjNjNjIzM2ZlNzMvYW1w

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