3 papers
astro-ph.CO2025
Confronting cosmic shear astrophysical uncertainties: DES Year 3 revisited
Leah Bigwood, Jamie McCullough, Jared Siegel +19
Cosmology from weak gravitational lensing has been limited by astrophysical uncertainties in baryonic feedback and intrinsic alignments. By calibrating these effects using external…
astro-ph.CO2025
The Power Spectrum of the Thermal Sunyaev-Zeldovich Effect
George Efstathiou, Fiona McCarthy
The power spectrum of unresolved thermal Sunyaev-Zeldovich (tSZ) clusters is extremely sensitive to the amplitude of the matter fluctuations. This paper present an analysis of the…
astro-ph.CO2025
Evolving Dark Energy or Supernovae Systematics?
George Efstathiou
Recent results from the Dark Energy Spectroscopic Instrument (DESI) collaboration have been interpreted as evidence for evolving dark energy. However, this interpretation is strong…