Tag

Baryons

All articles tagged with #baryons

space-and-spaceflight1 month ago•17 min saved

Missing Ordinary Matter Reunited: Diffuse Gas Envelopes Galaxies and Clusters

Using thousands of fast radio burst measurements, researchers mapped where ordinary (baryonic) matter resides and found widespread, diffuse gas surrounding galaxies and galaxy clusters. This diffuse gas accounts for the universe’s missing baryons, extending up to about 4 million light-years from galaxies and suggesting energetic processes like black hole jets fling baryons far beyond visible halos, which helps reconcile observations with current astrophysical models.

via Gizmodo|

#baryons #diffuse-gas #fast-radio-bursts

space1 month ago•5 min saved

Cosmic Census Finds Hidden Ordinary Matter Beyond Galaxy Halos

Astronomers used fast radio bursts to measure the density of ordinary matter in the universe and found most of it lies outside galaxy halos in the diffuse intergalactic medium, solving the long-standing missing-baryons puzzle and aiding precision cosmology for future telescopes like Roman and Euclid.

via BBC Sky at Night Magazine|

#baryons #cosmic-web #dark-matter

space4 months ago•25 min saved

Hidden Baryons: Astronomers Locate Half the Universe’s Ordinary Matter in Diffuse Galactic Gas

Astronomers stacked millions of galaxies and used the cosmic microwave background as a backlight to detect very diffuse ionized hydrogen gas around mature galaxies via the kinematic Sunyaev–Zel’dovich effect, suggesting the universe’s missing ordinary matter is out there and may trace the cosmic web; if confirmed, this finding could reshape understanding of galactic feedback but awaits peer review.

via ZME Science|

#baryons #cosmology #ionized-hydrogen

science5 months ago•2 min saved

LHCb Discovers Xi-cc-plus, a New Two-Charm Baryon

Scientists at CERN's LHCb have identified a new baryon, Xi-cc-plus, composed of two charm quarks and one down quark. Weighing about four times the mass of a proton, it offers a testbed for quantum chromodynamics and the strong force; discovered after 2023 detector upgrades, it is only the second observed baryon with two heavy quarks and has a lifetime up to six times shorter than a similar earlier baryon.

via Futurism|

#baryons #cern #lhc

science1 year ago•4 min saved

CERN's Latest Findings Shed Light on Matter-Antimatter Asymmetry

A new discovery at Cern's LHCb experiment reveals differences in the decay rates of matter baryons and their antimatter counterparts, providing insights into why the universe is dominated by matter and not antimatter, and hinting at potential new physics beyond the standard model.

via The Conversation|

#antimatter #baryons #cern

science1 year ago•6 min saved

Astronomers Locate the Universe's 'Missing' Matter Using Fast Radio Bursts

Astronomers used fast radio bursts to map and locate the universe's missing ordinary matter, revealing that about 76% of cosmic matter exists as hot, low-density gas between galaxies, helping to solve the decades-old missing baryon problem.

via CNN|

#baryons #cosmic-matter #dark-matter