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Dark energy and dark matter refers to the unseen energy and matter components of the Universe. Dark matter is invisible, non-baryonic matter hypothesized to explain phenomena including gravitational lensing and galactic rotation curves. Dark energy is thought to permeate the Universe and, despite its low energy-density, is thought to be responsible for the accelerating expansion of the Universe.
Nearly a century after dark matter was proposed, yet its nature remains elusive. Here, authors present their dark photon dark matter search results using two atomic magnetometer arrays 1700 km apart in large magnetic shields and offer the strongest terrestrial constraint in this mass range to date.
Baryon Acoustic Oscillations (BAO) are formed in the early universe and can be measured galaxy redshift survey to probe dark energy, but this feature is degraded with galaxy structure evolution. The authors propose a method that simultaneously use pre- and post-reconstruction power spectra to extract higher order information for surveys to constrain cosmological models.
Spatial and kinematic analysis of the solar neighbourhood shows that the Radcliffe Wave, a wave-shaped chain of star-forming gas clouds, is oscillating through the Galactic plane while also drifting radially away from the Galactic Centre.
Continuous gravitational waves represent an exciting new frontier for multi-messenger astrophysics. This overview discusses their origins and the results obtained in the LIGO–Virgo–KAGRA O3 observing run, highlighting their potential for future studies.
Volker Springel created the original GADGET code more than 25 years ago. Now it supports some of the largest simulations in astrophysics, and is being developed to do vastly more.
The SuperBIT telescope spent more than a month being carried through the stratosphere by a scientific balloon, imaging space from above 99.5% of the Earth’s atmosphere.
It’s been an eventful year for robotic missions. From probes of Solar System bodies to large-scale cosmic structures, advances in our understanding of the formation and evolution of the Universe gather speed.
The 21-cm absorption lines from neutral hydrogen at cosmic dawn are proposed as a probe to simultaneously study dark matter particle mass and cosmic heating history. By applying a statistical approach to simulated data this probe is shown to distinguish the effects of dark matter from those of cosmic heating.