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!
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DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
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MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
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