Read article 'BICEP crunches primordial gravitational waves '
The new analysis significantly improve the upper bound on the strength of gravitational waves produced during the epoch of inflation.
Read article 'Cosmic-ray anisotropy probed across 10 decades in energy'
This week, at the 37th International Cosmic Ray Conference, space- and ground-based detectors unveiled new cosmic-ray anisotropy measurements from GeV to tens of EeV.
Read article 'Astroparticle theory in rude health'
The European Consortium for Astroparticle theory held its first annual symposium in May, bringing together hundreds of theoretical physicists across Europe.
Read article 'Mountain observatory nets PeV gamma rays'
Recent detection from LHAASO provides the first clear evidence of the presence of galactic “pevatrons”.
Read article 'Exploring the Hubble tension'
Cosmologist and theoretical physicist Licia Verde discusses the current tension between early- and late-time measurements of the expansion rate of the universe.
Read article 'Accelerators meet gravitational waves'
Gravitational waves crease and stretch the fabric of spacetime as they ripple out across the universe, potentially causing observable effects on beams in storage rings.
Read article 'ANAIS challenges DAMA dark-matter claim'
First results from the ANAIS experiment show no annual modulation, in conflict with longstanding results from the DAMA experiment.
Read article 'Lifting the veil on supernova 1987A'
High-energy X-rays reveal possible missing neutron star formed by the collapse of the famous supernova's progenitor star.
Read article 'Cosmic plasma-wakefield acceleration'
Recent studies suggest that plasma-wakefield acceleration also occurs naturally, potentially explaining the highest energy cosmic rays.
Read article 'Pulsars hint at low-frequency gravitational waves'
Observations of millisecond pulsars by the NANOGrav collaboration show early signs of consistency with gravitational waves with a period of decades.
