Gravitational lensing magnification alters the observed spatial distribution of galaxies and must be accounted for to prevent biases in cosmological probes of the large-scale structure. We investigate its effects on the Dark Energy Survey year 6 galaxy clustering and galaxy-galaxy lensing analyses using the fiducial lens (position tracer) sample

We present constraints on the normal branch of the Dvali-Gabadadze-Porrati (nDGP) braneworld gravity model from the abundance of massive galaxy clusters. On scales below the nDGP crossover scale r c, the nDGP model features an effective gravitylike fifth force that alters the growth of structure, leading to an enhancement of the halo mass function

Context. The CarbON [CII] line in post-rEionisation and ReionisaTiOn epoch (CONCERTO) instrument was a low-resolution mapping Fourier-transform spectrometer based on lumped-element kinetic inductance detector (LEKID) technology that operated at 130-310 GHz. It was installed on the 12-meter APEX telescope in Chile in April 2021 and operated until

Active galactic nuclei (AGNs) exhibit complex variability across multiple wavelengths, reflecting diverse physical processes near their central engines. This work investigates the temporal variability of four AGNs, Mrk 509, NGC 5548, NGC 4151, and NGC 4593, using MFDMA (multifractal detrended moving average) analysis and Fisher─Shannon information

Spatially resolved stellar populations of massive quiescent galaxies at cosmic noon provide powerful insights into star-formation quenching and stellar mass assembly mechanisms. Previous photometric studies have revealed that the cores of these galaxies are redder than their outskirts. However, spectroscopy is needed to break the age-metallicity

Elemental composition is an essential factor in the chemistry of planetary and brown dwarf atmospheres; however, the majority of low-temperature objects near the Sun have nearly indistinguishable abundance patterns. In this talk, I will review some of the key findings of the JWST Cycle 3 "Arcana of the Ancients" program, which obtained NIRSpec and