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1.
Strongly lensed supernovae : the past and the future
Tanja Petrushevska, 2024, predavanje na tuji univerzi

Ključne besede: invited seminar, supernova, strong lensing, James Webb space telescope
Objavljeno v RUNG: 11.06.2024; Ogledov: 333; Prenosov: 2
.pdf Celotno besedilo (18,12 MB)
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Rubin Observatory's survey strategy performance for tidal disruption events
Katja Bricman, S. Van Velzen, M. Nicholl, Andreja Gomboc, 2023, izvirni znanstveni članek

Ključne besede: Rubin Observatory, legacy survey time, tidal disruption event, legacy survey of space
Objavljeno v RUNG: 29.08.2023; Ogledov: 1165; Prenosov: 8
.pdf Celotno besedilo (1,18 MB)
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5.
Strong lensing as a tool to study the early universe : written report
Brankica Apostolova, 2023, raz. nal. na višji ali visoki šoli

Ključne besede: strong lensing, astrophysics, Roman Space Telescope, galaxy clustersv, galaxies
Objavljeno v RUNG: 23.08.2023; Ogledov: 978; Prenosov: 0
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6.
On an algebraic description of projective geometries
Alessandro Linzi, predavanje na tuji univerzi

Ključne besede: Projective geometry, projective space, hypergroup
Objavljeno v RUNG: 06.06.2023; Ogledov: 1443; Prenosov: 0
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7.
Semihypergroup-Based Graph for Modeling International Spread of COVID-n in Social Systems
Narjes Firouzkouhi, Reza Ameri, Abbas Amini, Hashem Bordbar, 2022, izvirni znanstveni članek

Opis: Graph theoretic techniques have been widely applied to model many types of links in social systems. Also, algebraic hypercompositional structure theory has demonstrated its systematic application in some problems. Influenced by these mathematical notions, a novel semihypergroup based graph (SBG) of G = hH, Ei is constructed through the fundamental relation gn on H, where semihypergroup H is appointed as the set of vertices and E is addressed as the set of edges on SBG. Indeed, two arbitrary vertices x and y are adjacent if xgny. The connectivity of graph G is characterized by xg y, whereby the connected components SBG of G would be exactly the elements of the fundamental group H/g . Based on SBG, some fundamental characteristics of the graph such as complete, regular, Eulerian, isomorphism, and Cartesian products are discussed along with illustrative examples to clarify the relevance between semihypergroup H and its corresponding graph. Furthermore, the notions of geometric space, block, polygonal, and connected components are introduced in terms of the developed SBG. To formulate the links among individuals/countries in the wake of the COVID (coronavirus disease) pandemic, a theoretical SBG methodology is presented to analyze and simplify such social systems. Finally, the developed SBG is used to model the trend diffusion of the viral disease COVID-n in social systems (i.e., countries and individuals).
Ključne besede: graph theory, hypergroup, fundamental relation, social systems, geometric space
Objavljeno v RUNG: 23.11.2022; Ogledov: 1248; Prenosov: 0
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8.
Cluster-lensed supernovae with the Roman Space Telescope and Vera Rubin observatory
Mateusz Bronikowski, Tanja Petrushevska, Justin Pierel, 2022, objavljeni povzetek znanstvenega prispevka na konferenci

Opis: I will present our current efforts to enable the use of strongly lensed supernovae behind galaxy clusters as powerful tools to tackle several open questions in astrophysics and cosmology. As a preparatory task, we are collecting all available gravitational telescopes into a database, and estimating the properties of all reported multiply-imaged galaxies behind clusters. We are building a tool that will enable accurate estimates of cluster-lensed supernova yields for a given survey. In addition, we are developing the methods to extract the cosmological parameters from cluster-lensed supernovae in the Rubin and Roman data.
Ključne besede: supernova, gravitational lensing, Vera Rubin Observatory, Roman Space telescope, LSST, Hubble constant
Objavljeno v RUNG: 09.11.2022; Ogledov: 1336; Prenosov: 5
URL Povezava na celotno besedilo
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9.
The Christi-Kirk Fixed Point Theorem and equivalent principles : A viewpoint from the theory of ballspaces
Alessandro Linzi, vabljeno predavanje na konferenci brez natisa

Ključne besede: ball space, fixed point theorem, metric space, Caristi-Kirk, Oettli-Thera
Objavljeno v RUNG: 07.10.2022; Ogledov: 1082; Prenosov: 0
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