The neutron star, left, is surrounded by a swirling disk of gas supplied by the companion star, the yellow-red sphere at right. The neutron stars immense gravity pulls gas onto its surface. (Image credit: NASA/GSFC/Dana Berry)
Theory says that the neutron star crust is about a mile thick. Beneath is likely a superfluid of neutrons. Extreme gravity has compressed protons and electrons into neutrons. (Image credit: NASA/GSFC)
Scientists have obtained their best measurement yet of the size and contents of a neutron star, an ultra-dense object containing the strangest and rarest matter in the universe.
The measurement may lead to a better understanding of nature’s building blocks -- protons, neutrons and their constituent quarks -- as they are compressed inside the neutron star to a density trillions of times greater than on Earth.
Tod Strohmayer of NASA Goddard Space Flight Center in Greenbelt, Md., and Adam Villarreal, a physics graduate student at the University of Arizona, present their results today at the American Astronomical Society’s High Energy Astrophysics Division meeting in New Orleans.
Lori Stiles | EurekAlert!
'Frequency combs' ID chemicals within the mid-infrared spectral region
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16.03.2018 | Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI
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At the ILA Berlin, hall 4, booth 202, Fraunhofer FHR will present two radar sensors for navigation support of drones. The sensors are valuable components in the implementation of autonomous flying drones: they function as obstacle detectors to prevent collisions. Radar sensors also operate reliably in restricted visibility, e.g. in foggy or dusty conditions. Due to their ability to measure distances with high precision, the radar sensors can also be used as altimeters when other sources of information such as barometers or GPS are not available or cannot operate optimally.
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