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Can gravitational waves be detected by radio telescopes?

Two theoretical physicists are proposing a new approach to detect gravitational waves using a totally different type of observations: according to their calculations, parts of the waves should have converted to radio waves on their journey through the Universe, which might be measured by future radio telescopes.

Jan 14th, 2021

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How large are neutron stars?

An interdisciplinary research team has identified new, narrower limits on the radii of neutron stars. The team determined the radius of a typical neutron star to be close to 11 kilometers.

Dec 30th, 2020

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How nearby galaxies form their stars

The star-formation activity of typical, nearby galaxies is found to scale proportionally with the amount of gas present in these galaxies. This points to the net gas supply from cosmic distances as the main driver of galactic star formation.

Dec 22nd, 2020

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Looking for dark matter near neutron stars with radio telescopes

The targets of this search were two nearby neutron stars known to have strong magnetic fields, as well as the Milky Way's center, which is estimated to host half a billion neutron stars. Since no signal was seen, the team was able to impose the strongest limits to date on axion dark matter particles of a few micro electron-volt mass.

Dec 21st, 2020

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On the hunt for a missing giant black hole

Despite searching with the Chandra X-ray Observatory and Hubble Space Telescope, astronomers have no evidence that a distant black hole estimated to weigh between 3 billion and 100 billion times the mass of the sun is anywhere to be found. This missing black hole should be in the enormous galaxy in the center of the galaxy cluster Abell 2261, which is located about 2.7 billion light-years from Earth.

Dec 18th, 2020

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