In a plenary talk on Tuesday 17 April at the Royal Astronomical Society National Astronomy Meeting in Preston, Dr James Klimchuk of the Naval Research Laboratory in the USA will present the latest results from the STEREO and Hinode spacecraft, two missions that have been studying the Sun for the last few months.
STEREO is a NASA-led mission with substantial participation by scientists from the UK and other European countries. It consists of two spacecraft watching the Sun from different vantage points, that will eventually allow astronomers look at the whole of the region between the Sun and the Earth for the first time and eventually allow them to construct 3D images of the Sun. Hinode is a Japanese mission with collaboration from scientists in the US and UK. It orbits the Earth in a path that gives the probe a continuous view of the Sun.
One of the key objectives of the two missions is to study solar outbursts. These involve the sudden release of energy stored in the magnetic fields of the corona, the hot material that makes up the outer atmosphere of the Sun. The smallest events or nanoflares heat the corona to a temperature of millions of degrees and cause the emission of X-ray and ultra-violet radiation that changes the upper atmosphere of the Earth. The largest Coronal Mass Ejections (CMEs) are spectacular and can cause storms in the Earth’s magnetic field.
Together, STEREO and Hinode give astronomers the ability to watch CMEs all the way from the Sun to the Earth. Scientists can watch their evolution as they interact with the outflow of particles from the Sun (the solar wind) en-route to our planet. CMEs are the most dramatic ‘space weather’ events and can cause damage to technological systems such as power grids and communication and navigation networks. The severity of the impact of a CME depends on how it changes as it makes the journey across the inner Solar system and the new missions allow astronomers to better understand how these outbursts evolve.
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Physicists at the University of Bonn have managed to create optical hollows and more complex patterns into which the light of a Bose-Einstein condensate flows. The creation of such highly low-loss structures for light is a prerequisite for complex light circuits, such as for quantum information processing for a new generation of computers. The researchers are now presenting their results in the journal Nature Photonics.
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An experimental small satellite has successfully collected and delivered data on a key measurement for predicting changes in Earth's climate.
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A study led by scientists of the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) at the Center for Free-Electron Laser Science in Hamburg presents evidence of the coexistence of superconductivity and “charge-density-waves” in compounds of the poorly-studied family of bismuthates. This observation opens up new perspectives for a deeper understanding of the phenomenon of high-temperature superconductivity, a topic which is at the core of condensed matter research since more than 30 years. The paper by Nicoletti et al has been published in the PNAS.
Since the beginning of the 20th century, superconductivity had been observed in some metals at temperatures only a few degrees above the absolute zero (minus...
Researchers from the University of Miami (UM) Rosenstiel School of Marine and Atmospheric Science, the Italian Space Agency (ASI), and the Instituto Geofisico--Escuela Politecnica Nacional (IGEPN) of Ecuador, showed an increasing volcanic danger on Cotopaxi in Ecuador using a powerful technique known as Interferometric Synthetic Aperture Radar (InSAR).
The Andes region in which Cotopaxi volcano is located is known to contain some of the world's most serious volcanic hazard. A mid- to large-size eruption has...
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