Wednesday 1 November 2017

Overlooked Treasure: The First Evidence of Exoplanets

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Mount Wilson is the site where some of the key discoveries about our galaxy and universe were made in the early 20th century. But there is a far lesser known, 100-year-old discovery from Mount Wilson -- one that was unidentified and unappreciated until recently: the first evidence of exoplanets.
via Science Daily
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NASA investigates invisible magnetic bubbles in outer solar system

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Forty years ago, the twin Voyagers spacecraft were launched to explore the frontiers of our solar system, and have since made countless discoveries, including finding magnetic bubbles around two of the outer planets.
via Science Daily
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Newest dark matter map hints at where astrophysics must go for breakthroughs

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Three astrophysicists -- Scott Dodelson, Risa Wechsler and George Efstathiou -- recently participated in a roundtable discussion, hosted by The Kavli Foundation, about new data from the Dark Energy Survey and its implications for understanding the universe's history.
via Science Daily
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From Earth to space: developing radiation-tolerant systems

CERN helps develop many new technologies that have applications both in particle physics experiments and in the aerospace industry. (Image: K. Anthony/CERN)

Aerospace engineering and particle physics might not at first seem like obvious partners. However, both fields have to deal with radiation and other extreme environments, posing stringent technological requirements that are often similar.

CERN operates testing facilities and develops qualification technologies for high-energy physics, which are also useful for the ground-testing and qualification of flight equipment. This opportunity is particularly attractive when it comes to testing miniaturised satellites called CubeSats, whose components are typically made using commercial off-the-shelf components, since using standard procedures to ensure radiance tolerance is expensive and time-consuming.

The CERN Latch-up Experiment Student Satellite (CELESTA) intends to develop a miniaturised and space-qualified version of RadMon, a radiation monitor developed at CERN, and to prove that CERN’s High-Energy Accelerator Mixed-Field Facility (CHARM) can be used to test whether products are suitable for low Earth orbit. CELESTA is being developed in collaboration with the University of Montpellier and this year was selected by ESA’s Fly Your Satellite! programme to be sent into orbit in 2018 or 2019.

Many other technologies and facilities link space and accelerator radiation. The TimePix detectors, which are USB-powered particle trackers, are already used by NASA aboard the International Space Station to monitor radiation doses accurately. Monte Carlo codes such as FLUKA and Geant4, which were developed and have been maintained by worldwide collaborations with strong support from CERN since their conception, have been used routinely to study the radiation environment of past, recent and future space missions.

Magnesium diboride (MgB2), the high-temperature superconductor that will be used for the innovative electrical-transmission lines of the High-Luminosity LHC, has also demonstrated its potential for future space missions. VESPER, the Very Energetic Electron Facility for Space Planetary Exploration Missions in Harsh Radiative Environments (part of the CERN Linear Electron Accelerator for Research (CLEAR) facility), is a high-energy electron beam line used for radiation testing and suitable for testing electronic components for operation in Jupiter’s environment.

These synergies were in the limelight during RADECS 2017, the latest annual conference on Radiation Effects on Components and Systems, held for the first time at CERN in October this year. The aim of the RADECS conference is to provide an annual European forum on the effects of radiation on electronic and photonic materials, devices, circuits, sensors and systems. This year’s theme was “From space to ground and below”, referring to the need for radiation-tolerant systems both in space, aeronautical and terrestrial applications and in underground particle physics experiments.

This text is based on an article that first appeared in the October 2017 issue of the CERN Courier.


via CERN: Updates for the general public
http://home.cern/about/updates/2017/11/earth-space-developing-radiation-tolerant-systems