Tag: #cosmology

LIGO-Virgo-KAGRA releases GWTC-5.0, expanding gravitational-wave catalog to 390 events

LVK's GWTC-5.0 adds 150 compact-binary candidates from O4b, raising the catalog to 390 events and improving population studies, Hubble estimates and GR tests.

#gravitational-waves, #ligo, #astronomy, #cosmology

Preprint claims first detection of 'moving lens' effect in CMB at 4.8σ

An arXiv preprint reports a 4.8σ detection of the 'moving lens' effect in the CMB using ACT and DESI, a claimed new probe of transverse cosmic velocities.

#cosmology, #cmb, #act, #desi, #astrophysics

Preprint: CHIME Fast Radio Bursts Trace Diffuse Baryons Across the Cosmic Web

A new preprint uses dispersion from 3,455 CHIME fast radio bursts to statistically link FRB sightlines with maps of hot gas and galaxies, probing diffuse baryons.

#frb, #astrophysics, #cosmology, #chime, #baryons

Wide JWST Survey Finds Fewer Galaxies at z≈10, Bringing Counts Closer to Spectroscopy

A 36-sightline JWST NIRCam survey reports lower galaxy counts near redshift 10 than earlier photometric studies, aligning better with spectroscopic results.

#jwst, #astronomy, #galaxies, #cosmology

DESI completes five-year survey; will continue through 2028 to probe dark energy

The Dark Energy Spectroscopic Instrument finished its original five‑year survey, mapping 47M+ objects. DESI will continue through 2028 to test whether dark energy evolves.

#astronomy, #darkenergy, #cosmology, #desi

New LIGO–Virgo–KAGRA Catalog Lists 218 Gravitational-Wave Events, Nearly Doubling Known Cosmic Mergers

GWTC-4 adds 128 new detections from 2023–24, expanding the menagerie of black-hole and neutron-star mergers and sharpening tests of cosmology.

#ligo, #gravitationalwaves, #blackholes, #astronomy, #cosmology

LIGO’s latest catalog doubles the haul of gravitational-wave detections, revealing new black hole patterns

The GWTC-4.0 catalog adds 128 new merger candidates from LIGO’s latest run, bringing the total to 218 and sharpening clues about black holes and cosmic expansion.

#gravitationalwaves, #ligo, #blackholes, #astronomy, #cosmology