For the first time the birth of a black hole have been filmed. Cameras of the "Pi of the Sky" project recorded this remarkable event with 4 minutes sequence of 10 seconds long images. In almost 20 seconds the object became so bright that it could be visible with the naked eye. Then it begun fading and in 4 minutes it became 100 times fainter. At that time the observation was taken over by larger telescopes.
The "Pi of the Sky" observation combined with the Swift satellite gamma-ray data for the first time confirmed with 10s precision that optical emission starts simultaneously with the gamma-ray burst. Optical observations during the first seconds of the burst are crucial to understand the mechanism of releasing such huge energy.
This observation was the proof of the novel concept of the "Pi of the Sky" project. Usually, optical emission from GRB is observed by telescopes listening to alerts from satellite gamma ray detectors. Signal distribution and turning the telescope take some time and the very first minute of the outburst cannot be observed. The principle of the "Pi of the Sky" project is different. The apparatus monitors continuously large fraction of the sky taking 10s exposures and detects optical flashes independently, while the satellite information confirms the origin of the flash. Currently "Pi of the Sky" apparatus consists of two cameras installed in Las Campanas Observatory. They cover 20x20 degree of the sky. To increase the chance of observing a GRB 32 new cameras are under construction. They will cover 1/3 of the visible sky continuously. Original plan was to cover pi (~3.14) steradians of the sky, giving the name for the project. The name recalls also the title of John Barrow book "Pi in the sky" arguing that the phenomena we observe are governed by physical laws expressed in mathematical language.
The “Pi of the Sky” project was inspired by Bohdan Paczynski, great astrophysicist who past away last year. He contributed a lot to the understanding of GRBs and he always claimed that small telescopes have large potential for sky surveys.
The project is conducted by collaboration of Polish research institutes: Soltan Institute for Nuclear Studies (Warsaw), Center for Theoretical Physics PAS (Warsaw), Warsaw University, Warsaw University of Technology, Space Research Center PAS (Warsaw), University of Cardinal Stefan Wyszynski (Warsaw), Pedagogical University of Cracow.
Studying fundamental particles in materials
17.01.2017 | Max-Planck-Institut für Struktur und Dynamik der Materie
Seeing the quantum future... literally
16.01.2017 | University of Sydney
Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.
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Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales
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Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.
As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
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