科学与环境

Astronomers link mysterious cosmic flashes to collisions of dead stars

来源: Phys.org - latest science and technology news stories · 发布于

Astronomers link mysterious cosmic flashes to collisions of dead stars
来源: Phys.org - latest science and technology news stories

For decades, astronomers have identified collisions between two neutron stars through bursts of gamma rays that can disappear in less than two seconds. But some of these violent encounters may also reveal themselves through X-ray flashes lasting several minutes. A new study publi

For decades, astronomers have identified collisions between two neutron stars through bursts of gamma rays that can disappear in less than two seconds. But some of these violent encounters may also reveal themselves through X-ray flashes lasting several minutes. A new study published in Science Bulletin provides evidence for this connection, suggesting that merging neutron stars could be hiding among cosmic flashes whose origins have remained uncertain.

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科学与环境

A record-breaking X-ray flash may reveal the birth of a magnetar

Astronomers have found strong evidence that some mysterious, minutes-long X-ray flashes are produced when two neutron stars collide and create a magnetar. One record-setting event glowed in X-rays for nearly 10 minutes, potentially opening a new way to find these extreme cosmic m

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科学与环境

These massive stars could explain Webb’s strangest galaxies

Hubble observations of massive stars in metal-poor dwarf galaxies are revealing clues to why the early universe looks so unusual. Researchers found that stellar winds weaken sharply at extremely low metallicities, potentially allowing massive stars to retain more material and evo

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Fossil long known as world's oldest reptile dethroned
科学与环境

Fossil long known as world's oldest reptile dethroned

For nearly 30 years, a small fossil from Scotland has been celebrated as one of the earliest known reptiles. A new study out today in Nature and led by researchers at the American Museum of Natural History and the University of Oxford, in collaboration with the European Synchrotr

Phys.org - latest science and technology news stories ·

'Molecular movie' fills in blanks of how nonenveloped viruses infect cells
科学与环境

'Molecular movie' fills in blanks of how nonenveloped viruses infect cells

Viruses come in two major flavors—not chocolate and vanilla, quips Harvard Medical School structural biologist Stephen Harrison, but those enveloped in membranes, such as herpesvirus, influenza virus, HIV and SARS-CoV-2, and those that are not, such as poliovirus, HPV, rotavirus

Phys.org - latest science and technology news stories ·