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Primeur weekly 2020-09-14

Focus

Some RISC-V high performance implementations presented at RISC-V Global Forum by European Processor Initiative, NSITEXE, OpenBLAS, and SemiDynamics ...

Exascale supercomputing

Combustion pioneer named Department of Energy fellow ...

Quantum computing

New method prevents quantum computers from crashing ...

Q-CTRL and Quantum Machines announce partnership to accelerate quantum computing development ...

Cambridge Quantum Computing welcomes Mehdi Bozzo-Rey ...

Focus on Europe

Researchers develop molecule to store solar energy ...

First release of PROCESS software now available ...

From artificial intelligence to nanomaterials and astrophysics - Seven Irish research projects to benefit from EuroHPC Academic Flagship Programme ...

Middleware

SDSC to help create science gateway for new materials discovery ...

Hardware

NCSA's Donna J. Cox honoured with rare IPS Technology Innovation Award ...

Advanced NVMe controller technology for next generation memory devices ...

Credo announces the DOVE platform, its second generation of low power PAM4 DSPs for 100G/200G/400G data networks ...

Tachyum opens U.S., EU and NATO Government Business Unit ...

National Science Foundation awards CENIC an international networking grant for operation of Pacific Wave ...

UCF Consortium receives open source contribution from Arm to speed access to persistent memory storage ...

Liqid announces agreement with Arrow Electronics to bring composable disaggregated infrastructure solutions to data centres worldwide ...

Research and Markets to issue Global Hybrid Memory Cube (HMC) and High-Bandwidth Memory (HBM) Suppliers Strategic Positioning and Leadership Quadrant Report 2020 ...

Genomics England scales up genomic sequencing with Quantum ActiveScale object storage ...

NVIDIA to acquire Arm for $40 billion, creating world's premier computing company for the age of AI ...

Applications

NCSA and University of Illinois announce new Center for AstroPhysical Surveys ...

Lead lab selected for next-generation cosmic microwave background experiment ...

Insilico announces the launch of AI-powered COVIDomic to support COVID-19 research worldwide ...

Model shows that the speed neurons fire impacts their ability to synchronize ...

Physicists achieve tunable spin wave excitation ...

EBRAINS makes bid to enter the European Research Infrastructure Roadmap with ten-country strong coalition and France as lead country ...

Mysterious cellular droplets come into focus ...

The presence of resonating cavities above sunspots has been confirmed ...

The Hospital Clínic and BSC will use artificial intelligence to predict the evolution of patients with COVID-19 ...

ORIGINS - answers to existential questions ...

Altair announces 2020 Global Technology Conference to explore "The Future of..." ...

The Cloud

National Science Foundation-funded CloudBank now operational ...

Schlumberger, IBM and Red Hat announce major hybrid Cloud collaboration for the energy industry ...

Red Hat Marketplace aims to accelerate open hybrid Cloud innovation with certified software solutions ready to run on any Cloud ...

Renesas introduces DDR5 data buffer for high-performance server and Cloud service applications ...

NETINT deploys video transcoding technology in the Nimbix Cloud ...

The presence of resonating cavities above sunspots has been confirmed


Artist's conception of waves trapped between the surface of a sunspot (lower image, taken with the GREGOR Fabry-Perot Interferometer) and the transition region (upper image, by courtesy of NASA/SDO and the scientific team of AIA). Credit: Gabriel Perez Diaz, SMM (IAC).
9 Sep 2020 La Laguna - Sunspots are darker regions which often appear on the Sun's surface. They are caused by strong concentrations of magnetic field, and can be as big as the Earth, or even much bigger.

From the end of the 1960's the presence of oscillations in the atmospheres of these spots has been known, and interpreted as evidence for magnetic waves. These waves have attracted the interest of the researchers, because they could transport energy from the interior layers of the Sun up to the outer regions of the solar atmosphere. They have been proposed as one of the mechanisms which can explain the very high temperatures of the Sun's outer atmosphere, the Corona, one of the major questions in Solar Physics.

The new results show that these waves are partly trapped in a region of the atmosphere above the sunspots, giving rise to resonances. "This phenomenon", stated Tobías Felipe, a researcher at the Instituto de Astrofísica de Canarias (IAC) and the first author on both articles - "is similar to that produced within a wind instrument or on the strings of a guitar. As the waves are confined within a cavity, certain frequencies are strengthened. In the Sun, the strong variation in temperature close to the surface and in a zone called the transition region causes the waves to be reflected and can be enclosed in these resonant cavities."

For this study numerical simulations have been carried out on the Teide-HPC supercomputer, run by the Institute of Technology and Renewable Energies (ITER), in Tenerife. "Thanks to the simulations, we have been able to evaluate a very large number of models which have allowed us to identify what are the best observational measurements needed to confirm the presence of a resonant cavity, and to rule out those whose interpretation could be challenged", explained Christoph Kuckein, a researcher at the Leibniz Institute for Astrophysics at Potsdam and a co-author of the studies.

"The high resolution observations taken with the solar telescopes at the Teide Observatory, (GREGOR and VTT)", added Sergio González Manrique, a researcher who has recently joined the IAC - "let us follow in detail the fluctuations in velocity and temperature of several layers of the solar atmosphere. The data agree perfectly with the predictions of the numerical simulations."

As well as explaining a mystery which has lasted several decades, this finding provides a new method for inferring the properties of the solar atmosphere using its oscillations. "Future investigations will benefit from the data obtainable from the coming generation of solar telescopes, such as the European Solar Telescope, which will be installed on La Palma", concluded Tobías Felipe.

The articles published are the following:

- " Chromospheric resonances above sunspots and potential seismological applications ", authored by Felipe et al. and published inAstrophysical Journal Letters900, L29.
Source: Instituto de Astrofísica de Canarias - IAC

Back to Table of contents

Primeur weekly 2020-09-14

Focus

Some RISC-V high performance implementations presented at RISC-V Global Forum by European Processor Initiative, NSITEXE, OpenBLAS, and SemiDynamics ...

Exascale supercomputing

Combustion pioneer named Department of Energy fellow ...

Quantum computing

New method prevents quantum computers from crashing ...

Q-CTRL and Quantum Machines announce partnership to accelerate quantum computing development ...

Cambridge Quantum Computing welcomes Mehdi Bozzo-Rey ...

Focus on Europe

Researchers develop molecule to store solar energy ...

First release of PROCESS software now available ...

From artificial intelligence to nanomaterials and astrophysics - Seven Irish research projects to benefit from EuroHPC Academic Flagship Programme ...

Middleware

SDSC to help create science gateway for new materials discovery ...

Hardware

NCSA's Donna J. Cox honoured with rare IPS Technology Innovation Award ...

Advanced NVMe controller technology for next generation memory devices ...

Credo announces the DOVE platform, its second generation of low power PAM4 DSPs for 100G/200G/400G data networks ...

Tachyum opens U.S., EU and NATO Government Business Unit ...

National Science Foundation awards CENIC an international networking grant for operation of Pacific Wave ...

UCF Consortium receives open source contribution from Arm to speed access to persistent memory storage ...

Liqid announces agreement with Arrow Electronics to bring composable disaggregated infrastructure solutions to data centres worldwide ...

Research and Markets to issue Global Hybrid Memory Cube (HMC) and High-Bandwidth Memory (HBM) Suppliers Strategic Positioning and Leadership Quadrant Report 2020 ...

Genomics England scales up genomic sequencing with Quantum ActiveScale object storage ...

NVIDIA to acquire Arm for $40 billion, creating world's premier computing company for the age of AI ...

Applications

NCSA and University of Illinois announce new Center for AstroPhysical Surveys ...

Lead lab selected for next-generation cosmic microwave background experiment ...

Insilico announces the launch of AI-powered COVIDomic to support COVID-19 research worldwide ...

Model shows that the speed neurons fire impacts their ability to synchronize ...

Physicists achieve tunable spin wave excitation ...

EBRAINS makes bid to enter the European Research Infrastructure Roadmap with ten-country strong coalition and France as lead country ...

Mysterious cellular droplets come into focus ...

The presence of resonating cavities above sunspots has been confirmed ...

The Hospital Clínic and BSC will use artificial intelligence to predict the evolution of patients with COVID-19 ...

ORIGINS - answers to existential questions ...

Altair announces 2020 Global Technology Conference to explore "The Future of..." ...

The Cloud

National Science Foundation-funded CloudBank now operational ...

Schlumberger, IBM and Red Hat announce major hybrid Cloud collaboration for the energy industry ...

Red Hat Marketplace aims to accelerate open hybrid Cloud innovation with certified software solutions ready to run on any Cloud ...

Renesas introduces DDR5 data buffer for high-performance server and Cloud service applications ...

NETINT deploys video transcoding technology in the Nimbix Cloud ...