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Rubin-LSST Polska 2024

23-24 October 2024
Europe/Warsaw timezone

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Programme

24 / 24
2. Knut Olsen (NOIRLab, Arizona), An Overview of Rubin Observatory and LSST
23/10/2024, 11:15

I will present an overview of the Vera C. Rubin Observatory project and its planned Legacy Survey of Space and Time (LSST), scheduled to start in 2025. The overview will include LSSTs science goals, the status of the construction project, the plans for operations (including the role of the Rubin In-Kind program), and the planned observing strategy.
3. Agnieszka Pollo (NCBJ), Status of Polish participation in the LSST
23/10/2024, 12:15

I will summarize the current status of Polish participation in the LSST, our in-kind program, agreements, and perspectives.
4. Krzysztof Nawrocki (NCBJ), Status of in-kind programme, astroinformatics and synergies
23/10/2024, 14:00

In the talk we would like to describe the current status of the Polish IDAC few months before first light. The talk will focus on the solution that we are implementing. We will give a general description of main science cases and how they affects the architecture of our IDAC.
5. Arkadiusz Hypki (UAM) Distribute data analysis of Big Data and machine learning applied on a large number of detailed MOCCA numerical simulations
23/10/2024, 14:15

MOCCA code is able to perform detailed numerical simulations of globular clusters of any size within a few days (http://moccacode.net). Because of its speed and a close agreement with N-body codes MOCCA code is perfect to perform a grid of simulations for various initial conditions. It is currently beyond the capabilities of any N-body codes. At this moment our MOCCA database consists of over...
6. Milagros Colazo (UAM), Developing algorithms for Phase Curve analysis using DP03 Simulated Data in the LSST era
23/10/2024, 14:30

Asteroids are remnants of planetary formation. Their current physi- cal properties and orbital distribution are related to their initial state in the early Solar System and their subsequent dynamic and physical evo- lution. The phase curves of asteroids relate to the variation of integrated brightness in the disk over the phase angle (the angle between the Sun and the observer, as seen from...
7. Edyta Podlewska-Gaca (UAM), A possibility of follow-up observations of Solar System Objects
23/10/2024, 14:45

I will present the Gaia Ground-based Observational Service for Asteroids (Gaia-GOSA) which was created to facilitate collaboration between amateur observers and professional researchers in order to support asteroid studies. It allows for follow-up observations of objects for which we critically need observations. Here, I’d like to discuss a need, and a possibility of creation of similar alert...
8. Hareesh Thuruthipilly (NCBJ), From DES to HSC: Identifying Low Surface Brightness Galaxies using Transfer Learning on Deep Abel 194 Cluster data
23/10/2024, 15:30

Low surface brightness galaxies (LSBGs) are crucial for understanding galaxy evolution and cosmology, yet their physical properties remain elusive due to the challenges in detection. Future large-scale surveys, such as LSST and Euclid, will uncover many LSBGs, necessitating automated methods for identification. We explore transfer learning for detecting LSBGs by training eight transformer...
9. Katarzyna Małek (NCBJ)/Patryk Matera (OAUW/NCBJ), Hidden message: looking for attenuation proxy in optical observations
23/10/2024, 15:45

Future large sky surveys, such as the Legacy Survey of Space and Time (LSST), will gather optical photometry for billions of galaxies. Dataset obtained from LSST will provide an amazing opportunity to test different theories of galaxy evolution. However, due to limitations in observed wavelength, and the lack of spectroscopic redshifts, modeling physical properties of the LSST galaxies will...
10. Oliver Newton (CFT), Constraints on the properties of vMSM dark matter using the satellite galaxies of the Milky Way
23/10/2024, 16:00

Low-mass galaxies provide a powerful tool with which to investigate departures from the standard cosmological paradigm in models that suppress the abundance of small dark matter structures. One of the simplest metrics that can be used to compare different models is the abundance of satellite galaxies in the Milky Way. Viable dark matter models must produce enough substructure to host the...
11. Discussion
23/10/2024, 16:15
12. Bożena Czerny (CFT), Continuum and BLR reverberation mapping of AGN as a tool for cosmology
24/10/2024, 10:00

As our contribution to LSST through in-kind contribution POL- NCB-S6 we developed a software which can use the delay of the broad emission lines from the Main Survey to constrain the cosmological models. This will mostly require 10-yr data due to the long time delays. Now we concentrate on continuum time delays which can be measured from the first year data from DDFs. Light echo from...
13. Amit Kumar Mandal (CFT), Dust reverberation mapping in AGN
24/10/2024, 10:15

Session: Extragalactic astrophysics (cosmology, galaxies & AGNs) We analyze the torus size luminosity relationship in Type 1 AGNs using reverberation mapping (RM) of optical and infrared light curves in the W1 and W2 bands of the WISE survey. Our sample includes 446 AGNs for W1 and 416 for W2, covering bolometric luminosities from 10^43.4 to 10^47.6 erg/s, with reliable lag measurements. After...
14. Anjitha Jon Williams (CFT), Photometric redshifts for Kilo-Degree Survey quasars with deep learning
24/10/2024, 10:30

Redshift is the key quantity in cosmology. In modern wide-angle deep surveys, most of the redshifts are derived indirectly from photometry rather than spectroscopy. In this talk, I will discuss the use of Convolutional Neural Networks (CNN) for photometric redshift (photo-z) estimation of Quasars of the Kilo-Degree Survey (KiDS) DR4. CNNs have recently shown promise in accurately estimating...
15. Paweł Bielewicz (NCBJ), Effect of photometric redshift errors on cross-correlation between LSST and CMB gravitational lensing potential
24/10/2024, 11:15

Cross-correlation of the cosmic microwave background (CMB) gravitational lensing potential with the LSST galaxy survey divided into narrow redshift bins will enable to map the evolution of the cosmological parameters with redshift. We will discuss the effect of the redshift bin mismatch of galaxies, that is due to photometric redshift errors, on cross- correlation measurements and estimation...
16. Boudewijn Roukema, IA, NCU, Detecting cosmic voids via maps of geometric-optics parameters
24/10/2024, 11:30

Can individual cosmic voids be detected in deep photometric surveys without spectroscopic data or photometric redshifts? The curved- spacetime geometric-optics maps of a deep survey should, in principle, contain information about voids present in the intrinsic three-dimensional dark matter distribution. A heuristic algorithm for detecting voids this way will be presented, with results...
25. Antonio Vanzanella (NCBJ) "Detection of Slow-moving objects with LSST"
24/10/2024, 11:45

We aim at detecting Solar System slow-moving objects (SMOs) in LSST images using a Three-Dimensional Convolutional Neural Network (3D-CNN). Since no preexisting dataset is available, we created a dataset containing samples able to condense exhaustively the characteristics of the SMOs. We used small (15x15 pixel) cut-outs of LSST DP0.2’s simulated images in which we painted a simulated SMO....
18. Łukasz Wyrzykowski (OAUW), Alerts in LSST - a challenge of the depth and volume
24/10/2024, 13:30

Vera Rubin Observatory is going to flood the community with mil- lions of alerts every day. These will be due to supernovae and other exotic extragalactic transients, as well as local Galactic transient events such as cataclysmic variables, microlensing events and many others. The unprecedented depth of the survey, reaching around 25 mag per single epoch, will pose a huge challenge for any...
19. Tomasz Kamiński (CAMK), Chances for observing red novae with LSST
24/10/2024, 13:45

I am going to review what are our chances of observing transients from mergers of non-compact stars and common-envelope systems.
20. Joanna Molenda-Żakowicz (UWr), The LAMOST Facility and Its Database of 20 millions Star Spectra
24/10/2024, 14:00

The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) is a quasi-meridian Schmidt telescope located at the Xinglong Station of the China Astronomical Observatory. I will present the current status of the LAMOST spectroscopic survey and the possibility of accessing its database, which already contains more than 20 million low- and medium-resolution spectra, including...
21. Suhani Gupta (CFT), Bending the web: exploring the impact of modified gravity on the density field and halo properties within the cosmic web
24/10/2024, 15:00

Dependence of the properties of galaxies and dark matter halos on the hosting environment is one of the central issues in cosmology. Also, owing to the large-scale cosmological data from present and future surveys, it is of paramount importance to model non-linear measures associated with both underlying dark matter density fields, and halos which can help forecast various large-scale...
22. Marek Biesiada (NCBJ), Strong lensing in the LSST: new opportunities for cosmology and fundamental physics
24/10/2024, 15:15

Strong gravitational lensing is one of the basic predictions of General Relativity. By now it has become a mature research field and brought many important results in extrgalactic astronomy and cosmology. However, the potential in this field is much bigger and not sufficiently explored yet. I will review some yet unexplored topics in which strong lensing systems discovered by the LSST may...
23. Shuaibo Geng (NCBJ), Investigating the redshift Evolution of Lensing Galaxy Density Slopes via Model-Independent Distance Ratios in the Era of LSST
24/10/2024, 15:30

Strong lensing systems, soon to be widely detected by LSST, serve as powerful tools for exploring cosmology and galaxy structure. Com- bined with stellar kinematics, the Einstein radius measures the lens’s total projected mass and helps constrain lens mass profiles. However, its observed angular size also varies with the cosmological model, specifically through the distance ratio D_ls/D_s,...
24. Agnieszka Kryszczyńska (UAM), Status of LSST@Europe7
24/10/2024, 15:45
17. Boudewijn Roukema (UMK), Detecting cosmic voids via maps of geometric-optics parameters

Can individual cosmic voids be detected in deep photometric surveys without spectroscopic data or photometric redshifts? The curved- spacetime geometric-optics maps of a deep survey should, in principle, contain information about voids present in the intrinsic three-dimensional dark matter distribution. A heuristic algorithm for detecting voids this way will be presented, with results...
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