News tagged with x-ray

Supermassive black holes are outgrowing their galaxies

The growth of the biggest black holes in the Universe is outrunning the rate of formation of stars in the galaxies they inhabit, according to two new studies using data from NASA's Chandra X-ray Observatory and other telescopes ...

dateFeb 15, 2018 in Astronomy
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Stellar winds behaving unexpectedly

ESA's XMM-Newton has spotted surprising changes in the powerful streams of gas from two massive stars, suggesting that colliding stellar winds don't behave as expected.

dateFeb 05, 2018 in Astronomy
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A new bound on axions

An axion is a hypothetical elementary particle whose existence was postulated in order to explain why certain subatomic reactions appear to violate basic symmetry constraints, in particular symmetry in time. The 1980 Nobel ...

dateJan 22, 2018 in Astronomy
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