Read article 'Researchers grapple with XENON1T excess'
The excess could be due to a difficult-to-constrain tritium background, solar axions or solar neutrinos with a Majorana nature, says the collaboration.
Read article '100 TeV photons test Lorentz invariance'
HAWC and other high-altitude observatories are pushing the energy of gamma-ray observations into new territory to test fundamental symmetries.
Read article 'Gamma-ray polarisation sharpens multi-messenger astrophysics'
The 2020s should see the start of a new type of astrophysics, reports Merlin Kole.
Read article 'AMS detector given a new lease of life'
With its new cooling system in place, the Alpha Magnetic Spectrometer continues its quest to understand the origin of cosmic rays.
Read article 'Success in scientific management'
Barry Barish speaks to the Courier about his role in turning LIGO into a Nobel Prize-winning machine.
Read article 'Cosmology and the quantum vacuum'
The sixth conference in the series marked Spanish theorist Emilio Elizalde’s 70th birthday.
Read article 'Scoping out the Einstein Telescope'
Activities are gathering pace at two sites in Europe where the Einstein Telescope, a proposed next-generation gravitational-wave observatory, may be built.
Read article 'Renewed doubt cast on origin of fast radio bursts'
Researchers trace second repeating fast radio burst to ordinary galaxy, suggesting that extreme environments are not required.
Read article 'Astroparticle physicists head down under'
Wide-ranging discussions at TeVPA featured the DAMA signal, GeV gamma rays from the galactic centre, the 21 cm radio line, AMS's positron excess and a host of cosmic messengers.
Read article 'Crisis for cosmology?'
A new fit to Planck’s 2018 data release exchanges an anomalously large lensing amplitude for a higher energy density, thereby inferring a closed universe.
