Astronomers at the Gemini telescope in Hawaii have obtained a complete, multi-dimensional picture, of the dynamic flow of gas and stars at the core of an active galaxy [NGC 1068] located 70 million light years away. The image was achieved in a single snapshot and is the first time such a picture has been obtained by one of the new generation of giant telescopes with an 8 - 10 metre light collecting mirror. The astronomers used a new instrument - the Integral Field Unit (IFU), designed and built at Durham University - fitted to the telescope`s multi-object spectrograph to image the violent galaxy. The resulting data has been transformed into an animation that dramatically reveals the internal dynamics of the galaxy - including the interactions of a pair of galactic-scale jets that spew material for thousands of light years away from a suspected black hole at the galaxy`s core.
"We are very excited by these results and the superb capabilities that the IFU has added to the Gemini Multi-Object Spectrograph (GMOS)", commented Dr. Jeremy Allington-Smith, from Durham University, who was responsible for the overall design and construction of the GMOS Integral Field Unit. " In effect we have added an extra dimension to the main instrument so that it can physically map the motion of gas and stars at any point in the image of the object under study. So far we have used it to map the motion of gas within the nucleus of a powerful active galaxy, NGC1068, and the orbits of stars within more normal galaxies, but it can also be used to study regions within our own galaxy where stars are being formed."
The IFU instrument uses hundreds of tiny optical fibres, each thinner than a human hair, with tiny micro-lenses attached to the end to guide light from the telescope`s two dimensional image to a spectrograph. The spectrograph produces one individual spectrum for each fibre, a total of 1500 individual spectra, that can each reveal details of the physical conditions and velocity of the gas, dust and stars that it observes. This technology is new to the world of 8 -10 metre class telescopes and is particularly powerful when combined with an advanced telescope like Gemini which has 10 times the light collecting power of the Hubble Space Telescope and uses sophisticated optical technologies to focus starlight to razor sharpness.
Gill Ormrod | alphagalileo
First Juno science results supported by University of Leicester's Jupiter 'forecast'
26.05.2017 | University of Leicester
Measured for the first time: Direction of light waves changed by quantum effect
24.05.2017 | Vienna University of Technology
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy