News tagged with x-ray

Extended hard X-ray emission from a galactic nucleus

Supermassive black holes containing millions or even billions of solar masses of material are found at the nuclei of almost all galaxies. The Milky Way, for example, has a nuclear black hole with about 4 million solar masses ...

dateJun 12, 2017 in Astronomy
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R Aquarii: Watching a volatile stellar relationship

In biology, "symbiosis" refers to two organisms that live close to and interact with one another. Astronomers have long studied a class of stars—called symbiotic stars—that co-exist in a similar way. Using data from NASA's ...

dateJun 06, 2017 in Astronomy
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NASA to launch first-ever neutron-star mission

Nearly 50 years after British astrophysicist Jocelyn Bell discovered the existence of rapidly spinning neutron stars, NASA will launch the world's first mission devoted to studying these unusual objects.

dateJun 01, 2017 in Astronomy
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Early black holes may have grown in fits and spurts

A long-standing question in astrophysics is: how and when did supermassive black holes appear and grow in the early universe? New research using NASA's Chandra X-ray Observatory and the Sloan Digital Sky Survey (SDSS) suggests ...

dateJun 01, 2017 in Astronomy
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