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NASA's NICER telescope sees hot spots merge on a magnetar 5nvklj





NASA's NICER telescope sees hot spots merge on a magnetar 9tpt39

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NASA's NICER telescope sees hot spots merge on a magnetar

Dragon
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NASA's NICER telescope sees hot spots merge on a magnetar Empty NASA's NICER telescope sees hot spots merge on a magnetar

Post by Dragon Fri Mar 11, 2022 2:14 am

For the first time, NASA's Neutron star Interior Composition Explorer (NICER) has observed the merging of multimillion-degree X-ray spots on the surface of a magnetar, a supermagnetized stellar core no larger than a city.

"NICER tracked how three bright, X-ray-emitting hot spots slowly wandered across the object's surface while also decreasing in size, providing the best look yet at this phenomenon," said George Younes, a researcher at George Washington University in Washington and NASA's Goddard Space Flight Center in Greenbelt, Maryland.

"The largest spot eventually coalesced with a smaller one, which is something we haven't seen before."


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NASA's NICER telescope sees hot spots merge on a magnetar 334pu7m
Dragon
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NASA's NICER telescope sees hot spots merge on a magnetar Empty Re: NASA's NICER telescope sees hot spots merge on a magnetar

Post by Dragon Fri Mar 11, 2022 2:16 am

NASA's NICER telescope sees hot spots merge on a magnetar Nasas-nicer-telescope
Credit: NASA/SDO

Scientists think SGR 1830's hot spots likely resembled the bases of coronal loops frequently seen on the Sun.

In this extreme ultraviolet view from NASA's Solar Dynamics Observatory, loops of ionized gas trace magnetic fields emerging from the solar surface.


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NASA's NICER telescope sees hot spots merge on a magnetar 334pu7m
Dragon
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NASA's NICER telescope sees hot spots merge on a magnetar Empty Re: NASA's NICER telescope sees hot spots merge on a magnetar

Post by Dragon Fri Mar 11, 2022 2:17 am



A magnetar is a type of isolated neutron star, the crushed core left behind when a massive star explodes.

Compressing more mass than the Sun’s into a ball about 12 miles (20 kilometers) across, a neutron star is made of matter so dense that a teaspoonful would weigh as much as a mountain on Earth.


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NASA's NICER telescope sees hot spots merge on a magnetar 334pu7m

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