Astrophysics

astro-ph

Astrophysics, from cosmology and galaxies to solar and stellar physics.

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FLARE Extends Laboratory Access to Multiple X-Line Reconnection

A larger, modular reconnection experiment combines segmented coils, independent ohmic heating, and upgraded diagnostics to target $S\sim10^5$ and $\lambda\sim10^3$.

Aug 26, 20265 min2608.17332

Surface Fields Drive Trihydrogen Formation on Hydrated Silica

Self-charging under 1.88 keV X-rays produces V/nm surface fields, linking water fragmentation to H3+ formation below the warm-dense-matter threshold.

Aug 8, 20265 min2608.05590 Code available

XENONnT Extends Light Dark Matter Limits With S2-Only Data

A 7.83 tonne-year ionization-only analysis models low-energy backgrounds in four observables and excludes spin-independent scattering above 6.0×10⁻⁴⁵ cm² at 5 GeV/c².

Aug 3, 20264 min2601.11296

Proton Irradiation Forms Dipeptides in Interstellar Ice Analogues

Cryogenic glycine isotopologues exposed to 10 keV and 1 MeV protons produce water, amide bands, and glycylglycine signatures without liquid water.

Aug 2, 20264 min2607.26814

RNO-G Beamforming Cuts Radio-Neutrino Trigger Thresholds

Delay-and-sum beams with power integration reduce the SNR needed for RNO-G triggers by 25% on average.

Jul 28, 20264 min2607.24470

Hybrid X-Ray Optic Raises IAXO Signal Reach

A stress-managed shell layout and energy-specific coatings cover a 700-mm bore while simulations project more than 55× higher SNR.

Jul 28, 20264 min2607.20390