The transformation of cold neutral intergalactic hydrogen into a highly ionized warm plasma
marks the end of the cosmic dark ages and the beginning of the age of galaxies. The details …

LOFAR, the LOw-Frequency ARray, is a new-generation radio interferometer constructed in
the north of the Netherlands and across europe. Utilizing a novel phased-array design …

This article presents an extensive review of the status of the search of the dark matter. The
first eight sections are devoted to topics in dark matter and its experimental searches, and …

ABSTRACT A new upper limit on the 21 cm signal power spectrum at a redshift of z≈ 9.1 is
presented, based on 141 h of data obtained with the Low-Frequency Array (LOFAR). The …

We measure escape fractions, f esc, of ionizing radiation from galaxies in the sphinx suite of
cosmological radiation-hydrodynamical simulations of reionization, resolving haloes with …

We present the first limits on the Epoch of Reionization 21 cm H i power spectra, in the
redshift range z= 7.9–10.6, using the Low-Frequency Array (LOFAR) High-Band Antenna …

ABSTRACT We introduce the First Light And Reionisation Epoch Simulations (FLARES), a
suite of zoom simulations using the EAGLE model. We resimulate a range of overdensities …

We derive constraints on the thermal and ionization states of the intergalactic medium (IGM)
at redshift≈ 9.1 using new upper limits on the 21-cm power spectrum measured by the …

ABSTRACT The Murchison Widefield Array (MWA) team has derived new upper limits on the
spherically averaged power spectrum of the 21-cm signal at six redshifts in the range z≈ 6.5 …

Modern cosmology is broadly based on the Cosmological principle, which assumes
homogeneity and isotropy as its foundational pillars. Thus, there is not much debate about …