Scientists using the NASA Swift satellite and several ground-based telescopes have detected the most distant explosion yet: a gamma-ray burst from the edge of the visible Universe.
This powerful burst, probably marking the death of a massive star as it collapsed into a black hole, was detected on 4th September 2005. The burst comes from an era soon after stars and galaxies first formed, less than a billion years after the Big Bang.
"How a single star could generate so much energy as to be seen across the entire Universe remains an unanswered question," said Dr Nial Tanvir from the University of Hertfordshire, who joined with other scientists on four continents in using a multitude of telescopes to track the burst and its afterglow for days as the burst gradually faded. "The fact that we can see it may now provide us with a new tool to help understand those very early times."
Anita Heward | alfa
'Frequency combs' ID chemicals within the mid-infrared spectral region
16.03.2018 | American Institute of Physics
Fraunhofer HHI have developed a novel single-polarization Kramers-Kronig receiver scheme
16.03.2018 | Fraunhofer-Institut für Nachrichtentechnik, Heinrich-Hertz-Institut, HHI
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At the 2018 ILA Berlin Air Show from April 25–29, the Fraunhofer Institute for Laser Technology ILT is showcasing extreme high-speed Laser Material Deposition (EHLA): A video documents how for metal components that are highly loaded, EHLA has already proved itself as an alternative to hard chrome plating, which is now allowed only under special conditions.
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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.
Drones play an increasingly important role in the area of logistics and services. Well-known logistic companies place great hope in these compact, aerial...
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16.03.2018 | Earth Sciences
16.03.2018 | Physics and Astronomy
16.03.2018 | Life Sciences