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VERSION:2.0
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BEGIN:VEVENT
SUMMARY:Antonio Vanzanella (NCBJ) "Detection of Slow-moving objects with L
 SST"
DTSTART;VALUE=DATE-TIME:20241024T094500Z
DTEND;VALUE=DATE-TIME:20241024T100000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1751@events.ncbj.gov.pl
DESCRIPTION:We aim at detecting Solar System slow-moving objects (SMOs) in
  LSST images using a Three-Dimensional Convolutional Neural Network (3D-CN
 N). Since no preexisting dataset is available\, we created a dataset conta
 ining samples able to condense exhaustively the characteristics of the SMO
 s. We used small (15x15 pixel) cut-outs of LSST DP0.2’s simulated images
  in which we painted a simulated SMO. This simulated object is modeled on 
 Trans-Neptunian objects from the Jet Propulsion Laboratory Catalog but re-
 scaled to large distances. We further populated the dataset and increased 
 its dimension\, using data augmentation techniques\, and obtained over 500
 0 samples. During the training process\, regularization and normalization 
 techniques are applied to prevent overfitting. We evaluated the network pe
 rformance on a new test set of 200 samples and achieved an accuracy of 90%
 . In this talk\, we will present the model and discuss the details of how 
 the pipeline works. Moreover\, we will show how the network’s performanc
 e varies as a function of the apparent speed of the SMOs.\n\nhttps://event
 s.ncbj.gov.pl/event/364/contributions/1751/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1751/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Paweł Bielewicz (NCBJ)\, Effect of photometric redshift errors on
  cross-correlation between LSST and CMB gravitational lensing potential
DTSTART;VALUE=DATE-TIME:20241024T091500Z
DTEND;VALUE=DATE-TIME:20241024T093000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1740@events.ncbj.gov.pl
DESCRIPTION:Cross-correlation of the cosmic microwave background (CMB) gra
 vitational lensing potential with the LSST galaxy survey divided into narr
 ow redshift bins will enable to map the evolution of the cosmological para
 meters with redshift. We will discuss the effect of the redshift bin misma
 tch of galaxies\, that is due to photometric redshift errors\, on cross- c
 orrelation measurements and estimation of cosmological parameters.\n\nhttp
 s://events.ncbj.gov.pl/event/364/contributions/1740/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1740/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Katarzyna Małek (NCBJ)/Patryk Matera (OAUW/NCBJ)\, Hidden message
 : looking for attenuation proxy in optical observations
DTSTART;VALUE=DATE-TIME:20241023T134500Z
DTEND;VALUE=DATE-TIME:20241023T140000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1734@events.ncbj.gov.pl
DESCRIPTION: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 di
 fferent theories of galaxy evolution. However\, due to limitations in obse
 rved wavelength\, and the lack of spectroscopic redshifts\, modeling physi
 cal properties of the LSST galaxies will bring a lot of challenges which w
 e have to solve before the first data release. The most important question
  is the dust content in a galaxy. Since dust is one of the elements that t
 ruly shapes the spectral energy distribution of the galaxy\, we have to fi
 nd a way to estimate the amount of dust which covers stars. Fol- lowing ou
 r recent discovery of hidden attenuation proxy retrieved from surface brig
 htness and color using optical only data in the Sloan Digital Sky Survey (
 SDSS)\, we try to push the boundaries and look for similar relations in co
 smological simulation. We used SIMBA\, the state-of-the-art cosmological h
 ydrodynamic simulation\, due to its careful dust treatment with a rich che
 mical evolution of the ISM. Selecting similar samples of galaxies to those
  used in Maek et al.\, we are able to obtain similar relation for dust att
 enuation and optical properties of observed galaxies\, but also to go deep
 er in the surface brightness.\n\nhttps://events.ncbj.gov.pl/event/364/cont
 ributions/1734/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1734/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Boudewijn Roukema\, IA\, NCU\, Detecting cosmic voids via maps of 
 geometric-optics parameters
DTSTART;VALUE=DATE-TIME:20241024T093000Z
DTEND;VALUE=DATE-TIME:20241024T094500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1741@events.ncbj.gov.pl
DESCRIPTION:Can individual cosmic voids be detected in deep photometric su
 rveys without spectroscopic data or photometric redshifts? The curved- spa
 cetime geometric-optics maps of a deep survey should\, in principle\, cont
 ain information about voids present in the intrinsic three-dimensional dar
 k matter distribution. A heuristic algorithm for detecting voids this way 
 will be presented\, with results indicating that blind searches should be 
 able to make predictions of void locations and sizes that are falsifiable 
 by spectroscopic followup. This should lead to characterising voids both b
 y wall galaxies and by the straight paths of light through the voids that 
 reveal the voids’ spacetime curvature (which in the weak lensing formali
 sm is approximated as the "bending" of light in a fictitious uncurved spac
 etime).\n\nhttps://events.ncbj.gov.pl/event/364/contributions/1741/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1741/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Marek Biesiada (NCBJ)\, Strong lensing in the LSST: new opportunit
 ies for cosmology and fundamental physics
DTSTART;VALUE=DATE-TIME:20241024T131500Z
DTEND;VALUE=DATE-TIME:20241024T133000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1747@events.ncbj.gov.pl
DESCRIPTION:Strong gravitational lensing is one of the basic predictions o
 f General Relativity. By now it has become a mature research field and bro
 ught many important results in extrgalactic astronomy and cosmology. Howev
 er\, the potential in this field is much bigger and not sufficiently explo
 red yet. I will review some yet unexplored topics in which strong lensing 
 systems discovered by the LSST may bring a breakthrough\, in particular fo
 cusing on the experience of LSST Poland team.\n\nhttps://events.ncbj.gov.p
 l/event/364/contributions/1747/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1747/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Suhani Gupta (CFT)\, Bending the web: exploring the impact of modi
 fied gravity on the density field and halo properties within the cosmic we
 b
DTSTART;VALUE=DATE-TIME:20241024T130000Z
DTEND;VALUE=DATE-TIME:20241024T131500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1746@events.ncbj.gov.pl
DESCRIPTION:Dependence of the properties of galaxies and dark matter halos
  on the hosting environment is one of the central issues in cosmology. Als
 o\, owing to the large-scale cosmological data from present and future sur
 veys\, it is of paramount importance to model non-linear measures associat
 ed with both underlying dark matter density fields\, and halos which can h
 elp forecast various large-scale structure properties. In this work\, we s
 tudy the relative importance of different cosmic web (CW) environments in 
 influencing the dark matter density and halo properties in two modified gr
 avity (MG) models: namely Hu-Sawicki f(R) gravity model\, and normal branc
 h of Dvali-Gabadadze-Porrati (nDGP) gravity model. Both these models exhib
 it an enhanced structure formation scenario w.r.t. standard CDM case\, at 
 different cosmic scales and epochs. This is a result of an additional fift
 h force in these models\, which acts on top of the Newtonian gravitational
  force on the cosmological scales. The effect of the fifth-force is reflec
 ted in large-scale cosmic density fields\, and in the halo properties. We 
 study the hierarchical clustering properties of dark matter in different C
 W environments in these MG models. The clustering statistics in each envir
 onment exhibit a different trend from the overall density. Similarly\, eac
 h environment in MG models has a distinct departure from CDM\, and MG sign
 atures persist over a range of length scales and epochs. The difference of
  higher-order dark matter clustering statistics in these MG models w.r.t. 
 CDM\, and its dependence on the environment shows that the reduced cumulan
 ts can be used as cosmological probes of these beyond-GR models. We also f
 ocus on the halo properties\, such as the halo mass function\, halo spin a
 nd alignment\, and how the change in MG results is influenced in each CW e
 nvironment. The formation and evolution of DM halos\, which are sites of g
 alaxy formation\, is also influenced by the underlying theory of gravity\,
  and we show that the change in halo properties w.r.t. standard CDM is imp
 acted by the hosting CW environment. Such environmental dependence in the 
 change of dark matter and halo properties in MG scenarios will play an imp
 ortant role in future cosmological and galaxy formation studies\, and for 
 disentangling MG effects from the environmental impact in these large-scal
 e structure properties.\n\nhttps://events.ncbj.gov.pl/event/364/contributi
 ons/1746/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1746/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Łukasz Wyrzykowski (OAUW)\, Alerts in LSST - a challenge of the d
 epth and volume
DTSTART;VALUE=DATE-TIME:20241024T113000Z
DTEND;VALUE=DATE-TIME:20241024T114500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1743@events.ncbj.gov.pl
DESCRIPTION:Vera Rubin Observatory is going to flood the community with mi
 l- lions of alerts every day. These will be due to supernovae and other ex
 otic 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 epoc
 h\, will pose a huge challenge for any follow-up facility\, both photometr
 ic and spectroscopic. I will discuss the difficulty and possible solutions
  to how are we going to tackle this issue. I will present the global teles
 cope network\, BHTOM.space\, which is getting ready to pick and observe se
 lected alerts from LSST.\n\nhttps://events.ncbj.gov.pl/event/364/contribut
 ions/1743/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1743/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Amit Kumar Mandal (CFT)\, Dust reverberation mapping in AGN
DTSTART;VALUE=DATE-TIME:20241024T081500Z
DTEND;VALUE=DATE-TIME:20241024T083000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1738@events.ncbj.gov.pl
DESCRIPTION:Session: Extragalactic astrophysics (cosmology\, galaxies & AG
 Ns) 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 correcting for accretion disk co
 ntamination\, we find a torus size (R_dust) luminosity (L_bol) relation\, 
 with best-fit slopes of 0.39 for W1 and 0.33 for W2\, both shallower than 
 predicted by the dust radiation equilibrium model. By incorporating K-band
  data\, we confirm that torus size depends on dust emission wavelength\, w
 ith size ratios R_dust\,K:R_dust\,W1:R_dust\,W2 = 1.0:1.5:1.8 at L_bol=10^
 46 erg/s\, indicating a stratified torus structure. Additionally\, we obse
 rve a moder- ate correlation between deviations from the R_dustL_bol relat
 ion and the Eddington ratio\, suggesting that the Eddington ratio may infl
 uence the flattening of this relation. Looking ahead\, I plan to explore t
 he po- tential of using multi-epoch LSST data for reverberation mapping (B
 LR RM\, dust RM\, and accretion disk continuum RM) in conjunction with lig
 ht curves from other sources\, such as SPHEREx and Euclid.\n\nhttps://even
 ts.ncbj.gov.pl/event/364/contributions/1738/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1738/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Bożena Czerny (CFT)\, Continuum and BLR reverberation mapping of 
 AGN as a tool for cosmology
DTSTART;VALUE=DATE-TIME:20241024T080000Z
DTEND;VALUE=DATE-TIME:20241024T081500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1737@events.ncbj.gov.pl
DESCRIPTION:As our contribution to LSST through in-kind contribution POL- 
 NCB-S6 we developed a software which can use the delay of the broad emissi
 on lines from the Main Survey to constrain the cosmological models. This w
 ill mostly require 10-yr data due to the long time delays. Now we concentr
 ate on continuum time delays which can be measured from the first year dat
 a from DDFs. Light echo from irradiated accretion disk in active galaxies 
 was proposed as a cosmological tool in 1999\, allowing to determine the Hu
 bble constant directly but it was never working. The estimated disk sizes 
 were always too large\, and the attempted de- termination of the Hubble co
 nstant in 2007 gave much too low values. Recently\, there was a growing un
 derstanding that the problem is caused by the contamination of the accreti
 on disk continuum by the continuum produced in the Broad Line Region (BLR)
 . Using our model of the BLR and combining the mean spectrum and the measu
 red time delays from Swift we were able for the first time to disentangle 
 the two effects for the source NGC 5548. Our rough estimate gave the Hubbl
 e constant of 69 km/s/Mpc but more more work is needed to fit the data pro
 perly and to estimate the error in the claimed value. We now check if the 
 DDF cadence will be suitable for such measurements\, and it seems now that
  only for very massive black holes the measurement can be done.\n\nhttps:/
 /events.ncbj.gov.pl/event/364/contributions/1737/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1737/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Oliver Newton (CFT)\, Constraints on the properties of vMSM dark m
 atter using the satellite galaxies of the Milky Way
DTSTART;VALUE=DATE-TIME:20241023T140000Z
DTEND;VALUE=DATE-TIME:20241023T141500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1735@events.ncbj.gov.pl
DESCRIPTION:Low-mass galaxies provide a powerful tool with which to invest
 igate departures from the standard cosmological paradigm in models that su
 ppress the abundance of small dark matter structures. One of the simplest 
 metrics that can be used to compare different models is the abundance of s
 atellite galaxies in the Milky Way. Viable dark matter models must produce
  enough substructure to host the observed number of Galactic satellites. H
 ere\, we scrutinize the predictions of the neutrino Minimal Standard Model
  (MSM)\, a well-motivated extension of the Standard Model of particle phys
 ics in which the production of sterile neutrino dark matter is resonantly 
 enhanced by a lepton asymmetry in the primordial plasma. This process enab
 les the model to evade current constraints associated with non-resonantly 
 produced dark matter. Independently of assumptions about galaxy formation 
 physics we rule out\, with at least 95 per cent confidence\, all parameter
 izations of the MSM with sterile neutrino rest mass\, Ms1.4keV. Incorporat
 ing physically motivated prescriptions of baryonic processes and modelling
  the effects of reionization strengthen our constraints\, and we exclude a
 ll MSM parameterizations with Ms4keV. Unlike other literature\, our fiduci
 al constraints do not rule out the putative 3.55 keV X-ray line\, if it is
  indeed produced by the decay of a sterile neutrino\; however\, some of th
 e most favoured parameter space is excluded. If the Milky Way satellite co
 unt is higher than we assume\, or if the Milky Way halo is less massive th
 an M200=8 10^11 M\, we rule out the MSM as the origin of the 3.55 keV exce
 ss. In contrast with other work\, we find that the constraints from satell
 ite counts are substantially weaker than those reported from X-ray non-det
 ections.\n\nhttps://events.ncbj.gov.pl/event/364/contributions/1735/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1735/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Hareesh Thuruthipilly (NCBJ)\, From DES to HSC: Identifying Low Su
 rface Brightness Galaxies using Transfer Learning on Deep Abel 194 Cluster
  data
DTSTART;VALUE=DATE-TIME:20241023T133000Z
DTEND;VALUE=DATE-TIME:20241023T134500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1733@events.ncbj.gov.pl
DESCRIPTION:Low surface brightness galaxies (LSBGs) are crucial for unders
 tanding galaxy evolution and cosmology\, yet their physical properties rem
 ain elusive due to the challenges in detection. Future large-scale surveys
 \, such as LSST and Euclid\, will uncover many LSBGs\, necessitating autom
 ated methods for identification. We explore transfer learning for detectin
 g LSBGs by training eight transformer models on Dark Energy Survey (DES) d
 ata. These models were applied to Hyper Suprime-Cam (HSC) data of the deep
 er Abell 194 cluster\, leading to the discovery of 171 LSBGs\, with 87 bei
 ng new. The models achieved a recall rate of 93\n\nhttps://events.ncbj.gov
 .pl/event/364/contributions/1733/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1733/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Milagros Colazo (UAM)\, Developing algorithms for Phase Curve anal
 ysis using DP03 Simulated Data in the LSST era
DTSTART;VALUE=DATE-TIME:20241023T123000Z
DTEND;VALUE=DATE-TIME:20241023T124500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1731@events.ncbj.gov.pl
DESCRIPTION:Asteroids are remnants of planetary formation. Their current p
 hysi- 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 int
 egrated brightness in the disk over the phase angle (the angle between the
  Sun and the observer\, as seen from the object)\, providing information l
 inked to surface characteristics. By fitting a phase curve\, the most impo
 rtant parameters that can be determined are the H\, G1\, G2\, and G12 . Wi
 th the era of the LSST\, a large amount of data will be provided to the sc
 i- entific community\, including information about the Solar System. The m
 ain objective of this project is to develop software capable of obtaining 
 phase curves for a catalog of the magnitude that LSST will produce. The fi
 rst goal of this work is to improve our tools for fitting phase curves of 
 asteroids using photometric data obtained by the LSST\, and to include the
  rotational phase. Then\, we will construct a catalog of phase curve param
 eters and perform various statistical analyses. The next step will be to c
 ombine the LSST database with other surveys. Finally\, we will study the t
 axonomy of asteroids using the obtained phase parameters\, which will allo
 w us to deepen our understanding of these objects. Currently\, we have DP0
 .3\, which is a hybrid catalog containing both real and simulated Solar Sy
 stem objects. Based on it\, we have generated some tests with the codes we
  have already developed for analyzing large databases and have compared th
 em with what we obtained for ATLAS survey. In this presentation\, we will 
 share these preliminary results.\n\nhttps://events.ncbj.gov.pl/event/364/c
 ontributions/1731/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1731/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Arkadiusz Hypki (UAM) Distribute data analysis of Big Data and mac
 hine learning applied on a large number of detailed MOCCA numerical simula
 tions
DTSTART;VALUE=DATE-TIME:20241023T121500Z
DTEND;VALUE=DATE-TIME:20241023T123000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1730@events.ncbj.gov.pl
DESCRIPTION:MOCCA code is able to perform detailed numerical simulations o
 f 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 momen
 t our MOCCA database consists of over 2500 models for broad range of initi
 al parameters ( 200 TBs). To handle such amount of data from numerical sim
 ulations I created BEANS - a general purpose web-based software for intera
 ctive distributed data analysis with a clear interface for querying\, filt
 ering\, aggregating\, and plotting data (http://beanscode.net). BEANS soft
 ware relies on software which already proved its value in the industry lik
 e Apache Hadoop (distributed processing)\, Apache Pig (high level language
  for Apache Hadoop)\, Elastic (petabyte scale search engine) and more. Rec
 ently\, a plugin to BEANS was added\, which provides simple interface to t
 rain machine learning algorithms and then test their predictions. During t
 he talk I will demon- strate how one can query huge amount of MOCCA numeri
 cal simulations with Apache Pig to build a training set with some paramete
 rs describing the numerical models of GCs (e.g. core half-mass radii\, rel
 axation time\, pre/post core collapse phase). Then\, using a few different
  machine learning algorithms\, I will show how one can train them and fina
 lly test the predictions. More specifically\, the BEANS software will be u
 sed to show how one can automatically determine the dynamical age of GCs (
 whether a GC is in pre- or post-collapse phase).\n\nhttps://events.ncbj.go
 v.pl/event/364/contributions/1730/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1730/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Knut Olsen (NOIRLab\, Arizona)\, An Overview of Rubin Observatory 
 and LSST
DTSTART;VALUE=DATE-TIME:20241023T091500Z
DTEND;VALUE=DATE-TIME:20241023T101500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1727@events.ncbj.gov.pl
DESCRIPTION:I will present an overview of the Vera C. Rubin Observatory pr
 oject and its planned Legacy Survey of Space and Time (LSST)\, scheduled t
 o start in 2025. The overview will include LSSTs science goals\, the statu
 s of the construction project\, the plans for operations (including the ro
 le of the Rubin In-Kind program)\, and the planned observing strategy.\n\n
 https://events.ncbj.gov.pl/event/364/contributions/1727/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1727/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Agnieszka Kryszczyńska (UAM)\, Status of LSST@Europe7
DTSTART;VALUE=DATE-TIME:20241024T134500Z
DTEND;VALUE=DATE-TIME:20241024T140000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1749@events.ncbj.gov.pl
DESCRIPTION:https://events.ncbj.gov.pl/event/364/contributions/1749/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1749/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Shuaibo Geng (NCBJ)\, Investigating the redshift Evolution of Lens
 ing Galaxy Density Slopes via Model-Independent Distance Ratios in the Era
  of LSST
DTSTART;VALUE=DATE-TIME:20241024T133000Z
DTEND;VALUE=DATE-TIME:20241024T134500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1748@events.ncbj.gov.pl
DESCRIPTION: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\, it
 s observed angular size also varies with the cosmological model\, specific
 ally through the distance ratio D_ls/D_s\, entangling cosmology with galax
 y structure. Addressing this\, our study uses 161 strong lensing systems t
 o evaluate the power-law (PL) mass distribution slope and its redshift evo
 lution without relying on a specific cosmological model. We employ non-par
 ametric regression via Artificial Neural Networks and Gaussian Processes o
 n data from cosmic chronometers and Type Ia supernovae to reconstruct dist
 ance ratios. Our analysis differentiates between the total mass and lumino
 us matter density slopes\, revealing that the total mass concentration inc
 reases towards the present. While we observe only marginal increases in th
 e density slope of luminous matter as redshift decreasing. The study provi
 des a basis for using strong lensing to constrain cosmological parameters 
 and to understand galaxy evolution\, with ongoing potential applications b
 eing investigated.\n\nhttps://events.ncbj.gov.pl/event/364/contributions/1
 748/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1748/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Joanna Molenda-Żakowicz (UWr)\, The LAMOST Facility and Its Datab
 ase of 20 millions Star Spectra
DTSTART;VALUE=DATE-TIME:20241024T120000Z
DTEND;VALUE=DATE-TIME:20241024T121500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1745@events.ncbj.gov.pl
DESCRIPTION:The Large Sky Area Multi-Object Fiber Spectroscopic Telescope 
 (LAMOST) is a quasi-meridian Schmidt telescope located at the Xinglong Sta
 tion of the China Astronomical Observatory. I will present the current sta
 tus of the LAMOST spectroscopic survey and the possibility of accessing it
 s database\, which already contains more than 20 million low- and medium-r
 esolution spectra\, including time-series observations.\n\nhttps://events.
 ncbj.gov.pl/event/364/contributions/1745/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1745/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Tomasz Kamiński (CAMK)\, Chances for observing red novae with LSS
 T
DTSTART;VALUE=DATE-TIME:20241024T114500Z
DTEND;VALUE=DATE-TIME:20241024T120000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1744@events.ncbj.gov.pl
DESCRIPTION:I am going to review what are our chances of observing transie
 nts from mergers of non-compact stars and common-envelope systems.\n\nhttp
 s://events.ncbj.gov.pl/event/364/contributions/1744/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1744/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Anjitha Jon Williams (CFT)\, Photometric redshifts for Kilo-Degree
  Survey quasars with deep learning
DTSTART;VALUE=DATE-TIME:20241024T083000Z
DTEND;VALUE=DATE-TIME:20241024T084500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1739@events.ncbj.gov.pl
DESCRIPTION:Redshift is the key quantity in cosmology. In modern wide-angl
 e deep surveys\, most of the redshifts are derived indirectly from photome
 try rather than spectroscopy. In this talk\, I will discuss the use of Con
 volutional Neural Networks (CNN) for photometric redshift (photo-z) estima
 tion of Quasars of the Kilo-Degree Survey (KiDS) DR4. CNNs have recently s
 hown promise in accurately estimating photometric redshifts\, leveraging t
 he ability of deep learning algorithms to capture complex patterns in larg
 e datasets. I propose a new architecture based on CNN to estimate the phot
 ometric redshift of Quasars by training the network with images supplement
 ed with magnitudes. In this talk\, I will describe the architecture of our
  deep learning model and the training process\, the effect of model hyperp
 arameters and data preprocessing on photo-z estimation and\, highlight the
  advantages of using a CNN over traditional machine learning algorithms. I
  will present the results of experiments\, comparing the performance of th
 e model to other state-of-the-art photometric redshift estimation methods.
 \n\nhttps://events.ncbj.gov.pl/event/364/contributions/1739/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1739/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Discussion
DTSTART;VALUE=DATE-TIME:20241023T141500Z
DTEND;VALUE=DATE-TIME:20241023T143000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1736@events.ncbj.gov.pl
DESCRIPTION:https://events.ncbj.gov.pl/event/364/contributions/1736/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1736/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Edyta Podlewska-Gaca (UAM)\, A possibility of follow-up observatio
 ns of Solar System Objects
DTSTART;VALUE=DATE-TIME:20241023T124500Z
DTEND;VALUE=DATE-TIME:20241023T130000Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1732@events.ncbj.gov.pl
DESCRIPTION:I will present the Gaia Ground-based Observational Service for
  Asteroids (Gaia-GOSA) which was created to facilitate collaboration betwe
 en amateur observers and professional researchers in order to support aste
 roid 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 system for Solar System objects 
 observed by LSST.\n\nhttps://events.ncbj.gov.pl/event/364/contributions/17
 32/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1732/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Krzysztof Nawrocki (NCBJ)\, Status of in-kind programme\, astroinf
 ormatics and synergies
DTSTART;VALUE=DATE-TIME:20241023T120000Z
DTEND;VALUE=DATE-TIME:20241023T121500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1729@events.ncbj.gov.pl
DESCRIPTION:In the talk we would like to describe the current status of th
 e Polish IDAC few months before first light. The talk will focus on the so
 lution that we are implementing. We will give a general description of mai
 n science cases and how they affects the architecture of our IDAC.\n\nhttp
 s://events.ncbj.gov.pl/event/364/contributions/1729/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1729/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Agnieszka Pollo (NCBJ)\, Status of Polish participation in the LSS
 T
DTSTART;VALUE=DATE-TIME:20241023T101500Z
DTEND;VALUE=DATE-TIME:20241023T104500Z
DTSTAMP;VALUE=DATE-TIME:20260618T052625Z
UID:indico-contribution-364-1728@events.ncbj.gov.pl
DESCRIPTION:I will summarize the current status of Polish participation in
  the LSST\, our in-kind program\, agreements\, and perspectives.\n\nhttps:
 //events.ncbj.gov.pl/event/364/contributions/1728/
LOCATION:
URL:https://events.ncbj.gov.pl/event/364/contributions/1728/
END:VEVENT
END:VCALENDAR