Astroparticle physics

Superfluid helium dark-matter detector, Hinkley C will go ahead

UK’s Hinkley Point reactors get the go-ahead nuclear power station Britain’s prime minister Theresa May has approved the planned construction of the £18bn Hinkley Point C nuclear power station in south-west England. May had unexpectedly put the project under review in July, shortly after taking over as prime minister from David Cameron. Comprising two nuclear reactors, the station will be built ...

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What can we learn from ultrahigh energy cosmic rays?

 energy What can we learn from ultrahigh energy cosmic rays?Gordon Thomson introduces the Telescope Array experiment in Utah.Cosmic rays are streams of highly energetic particles arriving at the Earth from sources beyond the Milky Way galaxy. In this video, Gordon Thomson from the University of Utah in the US explains what this phenomenon can teach us about the nature of ...

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Flash Physics: LHC smashes luminosity record, gender bias in astronomy, calculating axion masses

Astronomy flash Physics: LHC smashes luminosity record, gender bias in astronomy, calculating axion masses LHC smashes luminosity record Astronomy CERN’s Large Hadron Collider (LHC) has surpassed its luminosity goals for 2016, delivering 40 inverse femtobarns against a target of 25. For 2016, the LHC was expected to reach a peak luminosity of 1034 cm–2 s –1 , but by the end of the run it was regularly ...

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Cosmic-ray showers create more muons than expected

Significantly Cosmic-ray showers create more muons than expected Significantly more muons appear to be created in cosmic-ray showers than are predicted by models based on data from the Large Hadron Collider (LHC) at CERN. That’s the conclusion of physicists at the Pierre Auger Observatory in Argentina, whose measurements agree with previous hints at a “muon excess” that first emerged more than 15 years ...

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Flash Physics: Exotic cosmic rays have mundane origins, Swiss reactors keep running, programmable material

Flash Physics: Exotic cosmic rays have mundane origins, Swiss reactors keep running, programmable material Exotic cosmic rays have mundane origins Astrophysicists Measurements made by the Alpha Magnetic Spectrometer (AMS) on the International Space Station suggest that exotic cosmic rays comprising boron nuclei have rather mundane origins. Astrophysicists divide cosmic rays into two categories: primary and secondary. Primary cosmic rays are produced in ...

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Flash Physics: Earthquake puzzle solved, scientists write to Trump, nuclear pasta delays neutrinos

Flash Physics: Earthquake puzzle solved, scientists write to Trump, nuclear pasta delays neutrinos Flash Physics is our daily pick of the latest need-to-know developments from the global physics community selected by Physics World‘s team of editors and reporters Earthquake-aftershock puzzle solved, say physicists The idea that smaller earthquakes (aftershocks) follow major earthquakes is a well-established concept in geophysics. However, aftershocks are ...

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Flash Physics: Cosmic-ray balloon, Tokamak Energy plasma, ripples in cosmic

Flash Physics: Cosmic-ray balloon, Tokamak Energy plasma, ripples in cosmic web, APS in open access scheme Cosmic-ray balloon launches in New Zealand A 532,000 m3 super-pressure balloon to study ultra-high cosmic rays has been launched in New Zealand by NASA. The balloon’s international Extreme Universe Space Observatory (EUSO) instrument will observe a broad swathe of the Earth’s atmosphere to detect the ultraviolet fluorescence as ...

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Flash Physics: Antiprotons from dark matter, lab visits do not inspire, CERN’s new linac, Australia at ESO

Flash Physics: Antiprotons from dark matter, lab visits do not inspire, CERN’s new linac, Australia at ESO Antiproton excess linked to dark matter An unexplained excess in the number of antiprotons detected by the Alpha Magnetic Spectrometer (AMS) is related to the annihilation of dark-matter particles, according to two independent studies. Dark matter is a mysterious substance that appears to account for ...

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Space radiation brought down to Earth

Space radiation brought down to Earth Space radiation has been reproduced in a lab on Earth. Scientists have used a laser-plasma accelerator to replicate the high-energy particle radiation that surrounds our planet. The research could help study the effects of space exploration on humans and lead to more resilient satellite and rocket equipment. The radiation in space is a major ...

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