3 papers
astro-ph.CO2025
Revealing cosmological fluctuations in 21cm intensity maps with MeerKLASS: from maps to power spectra
Steven Cunnington, Matilde Barberi-Squarotti, José Luis Bernal +8
Mapping the integrated 21cm emission line from dark matter-tracing neutral hydrogen gas is the primary science goal for MeerKLASS (MeerKAT's Large Area Synoptic Survey). Prior to t…
astro-ph.CO2025
Emission-line Stacking of 21cm Intensity Maps with MeerKLASS: Inference Pipeline and Application to the L-band Deep-field Data
Zhaoting Chen, Steven Cunnington, Alkistis Pourtsidou +11
We present a novel analysis of observational systematics through the emission-line stacking of the MeerKLASS L-band deep-field intensity maps, following the detection in arXiv:2407…
astro-ph.CO2025
Bispectrum constraints on Primordial non-Gaussianities with the eBOSS DR16 quasars
Marina S. Cagliari, Matilde Barberi-Squarotti, Kevin Pardede +2
We present constraints on , the parameter quantifying the amplitude of local Primordial Non-Gaussianities (PNG), from a combined analysis of the tree-level power spectr…