The next generation of surveys, in particular the Rubin Observatory Legacy Survey of Space and Time (LSST), will enable high signal-to-noise measurements of galaxy clustering across a broad range of environments and cosmic scales. The halo occupation distribution (HOD) framework provides a powerful statistical link between galaxies and the dark matter structures and is key to testing galaxy...
Cosmology is currently in a period of rapid development. During the past decade, increasing observational evidence has led to the establishment of the LCDM model. Despite its success, the latter has recently been challenged by several tensions. The combination of galaxy surveys and CMB lensing is a powerful probe of the large-scale structure and a key tool for testing the standard cosmological...
The W28 supernova remnant is a promising site for studying the acceleration and propagation of Galactic cosmic rays. Its proximity to dense molecular clouds provides a natural environment for cosmic-ray interactions and γ-ray production. We use data from the High-Altitude Water Cherenkov (HAWC) Observatory to investigate the very-high-energy (VHE; >100 GeV) γ-ray emission from the W28 region....
Spiral galaxies are typically classified as star-forming, which is associated with their blue color. They are usually found in less dense regions. Their counterparts, red elliptical galaxies, which are usually passive, are typically found in overdense regions. Red and disk-like galaxies, on the other hand, are passive but retain a spiral disk structure. These galaxies are relatively rare, and...
The standard pipeline and deblender for LSST use techniques that are not ideal to the characterization of Low Surface Brightness galaxies and features. Of particular concern and interest to us, are issues of shredding and improper centroiding for LSB galaxies which leads to the standard pipeline catalogs becoming unreliable when searching for these objects. The alternative of re-doing the...
The origin of Earth's water and its distribution throughout the Solar System remain among the key questions in modern planetary science. The planned Hydrogen and Deuterium Survey (HYADES) space mission will address these questions through highly sensitive observations of water in small Solar System bodies, enabling the detection of even trace amounts of water, as well as measurements of the...
"The “Space Workshop Days” project is a regional STEM outreach initiative bringing modern astronomy, space science, and technology directly to secondary-school students across Greater Poland, Poland. Funded by the Local Government of the Greater Poland Region and coordinated by the Earth and Space Foundation in collaboration with Adam Mickiewicz University and Poznań University of Technology,...
The goal of this Hubble-Lemaitre flow analysis is to measure the cosmological line element with as few prior model assumptions as possible. The aim will be to use 4MOST followups of LSST-Rubin supernovae type Ia (SNe Ia) light curve analyses together with complementary surveys to infer cosmological parameters for the local few
hundred megaparsecs of our Universe with as little dependence on...
Low surface brightness galaxies (LSBs) are estimated to make up around 50% of the total number density of galaxies in the local observable universe. However, they contribute less than 10% of the total luminosity, making them challenging to detect. LSBGs are defined as having an average surface brightness greater than 23 mag/sec2 in the r-band. An even more extreme subtype of LSBGs are Ultra...
A reliable dust attenuation estimate can be obtained from spectral energy distributions (SEDs) constructed over a wide range of wavelengths, including the ultraviolet (UV) and infrared (IR) regions. It is necessary to account for dust attenuation in order to reliably extract galaxy properties, such as the star formation rate (SFR), stellar ages and evolutionary state. The Legacy Survey of...
The Vera C. Rubin Observatory is currently conducting the largest sky survey in human history: the LSST. It will observe the entire sky every three days for ten years. It will collect astronomical amounts of data and observe nearly 20 billion galaxies. Despite these advantages, LSST observations will range from 338 to 1010 nm, thus leaving us without infrared measurements, which are crucial...
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Determining the Hubble constant through active galactic nuclei continuum reverberation mapping requires high quality photometric light curves to disentangle physical components near supermassive black holes. Within the framework of the Rubin LSST In Kind Contribution POL NCB S6, we utilize our dedicated HORIZON AGN code software to model continuum light curves and spectral energy...
Panchromatic data, by combining observations across multiple wavelengths, offer an unparalleled, comprehensive view of galaxies. This enables the determination of key physical properties and leads to discoveries not possible with single-wavelength data alone. While Rubin is preparing to make enormous discoveries in the optical wavebands, the MeerKAT radio telescope in South Africa is providing...
In this talk, I will present a machine learning-based approach to select a redshift-limited sample using multiband photometry when spectroscopic redshifts are not available. The technique is a decision tree-based binary classification, which has been further extended into a photometric redshift estimation method. This selection methodology has been applied to select targets for the WAVES...
I will present my current work on cosmological inference with quasars (QSOs) from the Kilo-Degree Survey (KiDS). In both the classification and the photometric redshift (photo-z) steps, I test how far the models can be extrapolated beyond the coverage of the spectroscopic training data, and how the resulting errors propagate into the cosmological constraints. I compare ML methods for...
Modelling blue straggler stars (BSSs) is a challenging task because they undergo non-single-star formation and evolution. Several formation scenarios have been proposed, but disentangling which pathway is responsible for the formation of a given BSS is not straightforward.
Two steps could significantly improve our understanding of these intriguing objects. Firstly, we need observables and...
As LSST will probe faint and distant stellar populations, it offers an unprecedented opportunity to study pulsating blue stragglers, particularly SX Phoenicis stars in stellar clusters. Mode identification is a crucial step in asteroseismic modelling, which can provide constraints on the internal structure and evolutionary history these stars. Photometric method of mode identification exploits...
The Rubin's LSST will transform time-domain astronomy while creating an unprecedented demand for rapid and sustained follow-up observations. BHTOM.space —the Black Hole Target and Observation Manager—coordinates a global network of nearly 200 professional and amateur telescopes and provides automated processing, calibration, and standardisation of heterogeneous photometric data. Originally...
The “Space Workshop Days” project is a regional STEM outreach initiative bringing modern astronomy, space science, and technology directly to secondary-school students across Greater Poland, Poland. Funded by the Local Government of the Greater Poland Region and coordinated by the Earth and Space Foundation in collaboration with Adam Mickiewicz University and Poznań University of Technology,...
