astronomers

SCIENCE

Astronomers could have witnessed a star gulp down a black gap and explode

For the initial time, astronomers have captured strong evidence of a unusual double cosmic cannibalism — a star swallowing a compact object these types of as a black hole or neutron star. In flip, that item gobbled the star’s core, producing it to explode and depart guiding only a black gap.

The initial hints of the ugly event, explained in the Sept. 3 Science, came from the Very Big Array (VLA), a radio telescope consisting of 27 tremendous dishes in the New Mexican desert near Socorro. Through the observatory’s scans of the night sky in 2017, a burst of

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SCIENCE

A super-small gamma-ray burst defies astronomers’ anticipations

A incredibly small gamma-ray burst has astronomers rethinking what triggers these celestial cataclysms.

The Fermi Gamma-ray Place Telescope detected a solitary-next-extended blast of gamma rays, dubbed GRB 200826A, in August 2020. These kinds of fleeting gamma-ray bursts, or GRBs, are typically considered to originate from neutron star smashups (SN: 10/16/17). But a nearer glance at the burst unveiled that it arrived from the implosion of a substantial star’s main.

In this circumstance, the core of a star collapses into a compact object, such as a black gap, that powers substantial-pace particle jets. People jets punch by way of

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