Dutch researcher Steve van Straaten set a record during his doctoral research. The researcher registered the fastest ever change in the X-ray emission originating from a binary star. The record-breaking binary star consists of a neutron star and a lighter companion star.
Astronomer Steve van Straaten studied the time variations in the X-ray emission from various binary stars. He found that one of the binary stars had a vibrational frequency of 1330 Hz. This means that the intensity of the X-rays emitted changes 1330 times per second. That is the highest frequency ever measured for such a variation. The researcher used this information to determine the upper limit for the size and mass of the neutron star.
Neutron stars consist of the most compacted material in our universe. They have a mass comparable to that of our sun but they are about one quadrillion times smaller. If a neutron star and a normal star rotate around each other, matter can pass from the normal star to the neutron star. This happens as soon as the gravitational force of the normal star is no longer strong enough to stop its outer layers from being pulled away by the attractive force of the neutron star.
Sonja Jacobs | NWO
Midwife and signpost for photons
11.12.2017 | Julius-Maximilians-Universität Würzburg
New research identifies how 3-D printed metals can be both strong and ductile
11.12.2017 | University of Birmingham
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...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.
The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...
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