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

The detection of gravitational waves (GWs) from a binary neutron star (BNS) merger by Advanced LIGO and Advanced Virgo (GW170817), together with its electromagnetic counterpart, the short gamma-ray burst GRB 170817A, heralded the birth of multimessenger astronomy. The detection of TeV emission from GRBs motivates follow-up observations with the

Aims. We investigated whether combining gas and stellar kinematic maps provides measurable advantages in recovering galaxy mass profiles compared to using single-component maps alone. We used deep learning models to leverage this joint information. Methods. We developed a probabilistic convolutional neural network (CNN) framework trained and tested

Context. Be/X-ray binaries, the most common class of high-mass X-ray binaries, are characterised by OBe companions, but they display a rich variety of X-ray behaviours. One of the most atypical systems is X0726−260, which also has the earliest optical counterpart among the whole Milky Way and Magellanic Cloud sample. Aims. We intend to improve the