An increase in the observation facilities in the last two decades, from the UV to far-infrared and sub-millimeter, has motivated a multi-wavelength approach to studying the Universe. With higher resolution and in-depth surveys of the sky, we are now able to study distant galaxies and estimate their physical parameters, e.g. star formation Rate (SFR), stellar mass and dust mass by "looking back...
Chirality in nuclear excited states involves spontaneous symmetry breaking of time-reversal T operation. This phenomenon is quite new as the first experimental proof of existence of chirality was given in 2006 by Warsaw team and only in 7 isotopes with chiral states have been found so far. The tool to detect and trace chirality is experimental nuclear gamma spectroscopy. On the seminar I will...
The pursuit for physics beyond the Standard Model (BSM) follows a twofold path. On the experimental side, a great effort was put in developing research strategies that go beyond the original LHC paradigm based on the missing transverse energy. On the theoretical side, various BSM models can be proposed to address phenomena observed in nature. Among many extensions of the Standard Model,...
For a long time, it was believed that the fundamental constituents of atoms were electrons and nucleons until experiments conducted in the 1960s at Standford Linear Accelerator Center (SLAC) proved the existence of internal degrees of freedom in the nucleons. These ones are called quarks and gluons, or collectively partons. With QCD as the fundamental theory for strong interactions, we can...
In my talk, I will present work on identifying mergers of galaxies using astronomical data in optical bands. The current models of galaxy formation and evolution, in the context of the Lambda-CDM cosmological model, are based on dark matter haloes that host a galaxy. Merging galaxies are one crucial aspect of the galactic life-time whose effect is still not fully understood. Identifying them...
Studying high-energy hadronic scattering processes to understand the interior of atoms has been the focus of experimental and theoretical studies for more than three decades now. During this period, the Color Glass Condensate(CGC) effective field theory has been utilised to analyse specifically high-energy proton-nucleus (pA) collisions. One of the main approximations used in the CGC is the...
Gravitational lensing has been considered as a rare phenomenon, however recent advancements in technology lead to the discovery of many lensed events. Now it has become an unavoidable tool in astronomy. Like electromagnetic waves, gravitational waves could also be lensed leading to the formation of magnified multiple signals and many more. The increasing sensitivity of current detectors and...
T2K is a long-baseline neutrino experiment that measures neutrino oscillations. Oscillation of the muon (anti)neutrino beam to electron (anti)neutrinos is sensitive to the leptonic CP violating phase. In this talk, I will discuss the addition of a new electron neutrino signal sample at T2K's far detector, which can improve T2K's sensitivity to the CP-violating phase. I will also talk about how...
Star formation is one of the main mechanisms of energy production in the universe and one of the essential processes linked to galaxies' evolution. Over the past two decades, we have witnessed an explosion of data from local and distant galaxies across the entire electromagnetic spectrum. These observations gave us an unprecedented picture of those objects (e.g. gas content, physical...
It is commonly expected that the usual description of spacetime as a smooth manifold is no longer reliable as we approach the Planck scale when quantum effects of the geometry can no longer be neglected. Noncommutativity of spacetime has been advocated as a possible way to effectively model quantum gravitational effects in regimes of negligible curvature. A widely studied incarnation of this...
In the past, modeling of some of the nuclear reactors' operational parameters was done using conservative input values in cases where the uncertainty of inputs was not available or easily quantifiable. This approach led to deteriorated economical performance of the reactors, as conservative modeling outputs strayed far from actual operational conditions. Modern computing resources combined...
Many analyses in particle physics are trying to determine for which set of systematic parameters Monte Carlo (MC) predictions are in the best agreement with the collected data. To describe this agreement we use the likelihood function. There are several likelihoods suggested by statisticians each with different assumptions. Another important issue is the treatment of MC statistical...
The chemical evolution of galaxies is the direct product of the whole history of star formation. This relation is encoded in the so-called ``fundamental metallicity relation'' (FMR), a three-dimensional relation that connects stellar mass, star formation rate, and metallicity.
The FMR is mainly studied for star-forming galaxies at low redshift, z~0 with the Sloan Digital Sky Survey (SDSS). ...
We study asemi-classical model of the mixmaster universe. We first derive the quantum model and then introduce its semi-classical approximation. We employ a general integral quantization method that respects the symmetries of the model given by the affine and the Weyl-Heisenberg groups, and can produce a wide class of quantum models. The semi-classical approximation is based on the coherent...
Low surface brightness galaxies (LSBGs) are defined as galaxies that are fainter than the night sky (µ(g) > 22 mag arcsec−2). LSBGs are hypothesized to be dominated by dark matter halos and contain a significant fraction of the missing baryons, making them an ideal laboratory to test cosmological models. Upcoming large-scale surveys like Rubin Observatory Legacy Survey of Space and Time (LSST)...
Gravitational lensing, as predicted by Einstein's General Relativity, is the bending of light from distant sources via the gravitational field of massive objects. This phenomenon provides a valuable opportunity for unique studies. In this presentation, I will discuss the applications of strong gravitational lensing in the realms of cosmology and galaxy evolution.
Using the most extensive...
