Tag: #desi

DESI DR1 Reanalysis Sets Neutrino Mass Limit That Appears to Disfavor Inverted Ordering

Independent reanalysis of DESI DR1 finds a 95% cosmological upper limit on summed neutrino mass that appears to disfavor the inverted hierarchy.

#neutrinos, #cosmology, #desi, #astrophysics

Preprint reports >3σ evidence for w = −1 ‘phantom crossing’ in CPL dark‑energy fits

A UT Dallas preprint using an “optimal redshift” method finds CPL-model fits to current data show w = −1 crossing at >3σ for several dataset combinations.

#cosmology, #darkenergy, #astrophysics, #desi

Reanalysis Challenges DESI’s Claimed Signal for Dynamical Dark Energy

A new arXiv reanalysis finds DESI’s apparent hint of evolving dark energy is concentrated in one redshift bin and vanishes under alternate statistical checks.

#darkenergy, #desi, #cosmology, #arxiv

DESI preprint reports 1% measurement of the universe’s expansion at redshift 2.33

DESI's new preprint reports a 1% measurement of cosmic expansion geometry at z=2.33 from the Lyman‑alpha forest, tightening high‑redshift anchors for H0 and Ωm.

#cosmology, #desi, #lymanalpha, #darkenergy

Revised DESI reanalysis suggests unusually tight cosmological bounds on neutrino mass, favors normal ordering

A revised DESI reanalysis reports unusually tight cosmological limits on the sum of neutrino masses that favor the normal ordering, but the result is preliminary.

#neutrinos, #cosmology, #desi, #particlephysics

Preprint Suggests Dark Matter–Dark Energy Interaction Could Explain DESI Anomalies

A revised arXiv preprint argues DESI-era tensions with ΛCDM may be explained by dark matter–dark energy interactions rather than evolving dark energy.

#cosmology, #darkenergy, #darkmatter, #desi

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: DESI spectra identify 10,000+ candidate cold gas inflows into galaxies

An arXiv preprint using DESI DR2 spectra reports more than 10,000 candidate cold-gas inflows in z<0.6 galaxies, offering a large but preliminary sample.

#astronomy, #desi, #galaxies, #arxiv

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