Astrophysics and cosmology Archives – Page 8 of 58

Cosmic plasma-wakefield acceleration

Recent studies suggest that plasma-wakefield acceleration also occurs naturally, potentially explaining the highest energy cosmic rays.

NANOGrav uses pulsate to detect potential distortions in space time

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.

Weinberg on astrophysics

Steven Weinberg has penned a concise account of the foundations of astrophysics of permanent value, writes our reviewer.

Borexino, located at Gran Sasso National Laboratory in Italy, comprises almost 300 tonnes of well-shielded ultrapure liquid scintillator surrounded by 2200 photomultipliers and is designed to detect sub-MeV solar neutrinos. Credit: Borexino collaboration.

Neutrinos confirm rare solar fusion process

The Borexino collaboration has used an ingenious analysis to provide the first direct proof of the CNO cycle.

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.

Several different sources, all of which are likely associated with pulsars, are observed by the HAWC observatory to emit photons at energies exceeding 56 TeV. The bright source on the right is the strongest contributor to the LIV limit. Source: Phys. Rev. Lett. 124 021102.

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.

Gamma-ray polarisation sharpens multi-messenger astrophysics

The 2020s should see the start of a new type of astrophysics, reports Merlin Kole.

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.

Success in scientific management

Barry Barish speaks to the Courier about his role in turning LIGO into a Nobel Prize-winning machine.

Cosmology and the quantum vacuum

The sixth conference in the series marked Spanish theorist Emilio Elizalde’s 70th birthday.

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