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4. Cluster-lensed supernova yields from the Vera C. Rubin Observatory and Nancy Grace Roman Space TelescopeMateusz Bronikowski, Tanja Petrushevska, Justin Pierel, A. Acebron, D. Donevski, B. Apostolova, Nadejda Blagorodnova, Taj Jankovič, 2025, izvirni znanstveni članek Opis: Through gravitational lensing, galaxy clusters can magnify supernovae (SNe) and thereby create multiple images of the same SN. This enables measurements of cosmological parameters (primarily the Hubble constant), which will be increasingly important in the context of upcoming surveys from the Nancy Grace Roman Space Telescope ( Roman ) and Vera C. Rubin Observatory. We study the prospects of detecting strongly lensed supernovae in cluster fiels with Roman 's High Latitude Time Domain Survey (HLTDS) and the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST). We employed two approaches: one focusing on known multiply imaged galaxies (arcs) behind cluster fields, along with the SN rates specific to those galaxies (arc-specific), while the second is based on the expected number of lensed SNe exploding in a given volume behind a galaxy cluster (volumetric). We collected all the clusters in the literature that feature a) a well-constrained lens model and b) multiply imaged galaxies behind clusters with high-quality data for the multiply imaged galaxies behind clusters. This allowed us to determine the supernova rate for each galaxy. We provide predictions for 46 clusters visible to the Vera C. Rubin Observatory, as well as for 9 observable by Roman ’s HLTDS, depending on whether the clusters fall within the survey’s observing field. We predict that the number of multiply imaged SNe discovered by LSST in its first three years is $3.95 ± 0.89$ from the first approach or $4.94±1.02$ from the second. Based on the current proposed observing strategy for the HLTDS, which specifies the requirements on galactic and ecliptic latitudes, the expected number of multiply imaged supernovae ranges from $0.38 ± 0.15$ to $5.2 ± 2.2$, depending on the specific cluster observed. However, the exact fields to be targeted remain a matter of discussion. We conclude that LSST offers great prospects for detecting multiply imaged SNe. If adequate follow-up campaigns are conducted, these capabilities will enable measurements of cosmological parameters independent of conventional probes. These predictions are effectively lower limits, as we only considered the most massive and well-studied clusters in the present work. Here, we provide a recommendation for HLTDS observing field selection, namely: either MACS J0553.4-3342 or Abell 1758a should be observed by the survey to maximize the number of potential multiply imaged SN discoveries.
Ključne besede: supernovae, gravitational lensing
Objavljeno v RUNG: 14.05.2025; Ogledov: 2; Prenosov: 0
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8. Accounting and reporting in supporting the transition to a circular economy : a bibliometric analysisYuliia Maksymiv, Nadiia Skromyda, Jurij Urbančič, 2024, izvirni znanstveni članek Opis: The development of a circular economy is an important task for socially responsible politicians, scientists and businesses. Despite growing interest in this concept over the past decade, the implementation of circular business models remains limited. One of the key barriers is the insufficient utilization of accounting and reporting capabilities, which are practical tools for transitioning to a circular economy. These tools support informed managerial decision-making in building and maintaining circular business models and processes. To explore the scientific interest in accounting and reporting as a means of supporting the transition to and development of a circular economy, a bibliometric analysis was conducted. This analysis utilized data from the Scopus database (845 documents from 2004 to 2024) and was further processed using VOSviewer to construct maps based on bibliographic data. The data allowed for the identification of authors and their collaboration clusters, dominant publications and regions in the research field, as well as important directions for further studies. The clustering of the conceptual landscape under study revealed seven keyword-based clusters and their interconnections, highlighting research priorities. It was established that, despite significant progress in the theoretical development of the circular economy from an interdisciplinary perspective, organizational and economic tools—particularly accounting and reporting—remain underexplored. The findings indicate the significant potential of accounting and reporting, which must be considered in the training of socially responsible accountants, financiers, and managers. The study emphasizes the need for further adaptation of accounting and reporting to meet the requirements of the circular economy, thereby contributing to achieving the Sustainable Development Goals.
Ključne besede: circular economy, accounting, reporting, sustainability reports, sustainable development, social responsibility, bibliometric analysis
Objavljeno v RUNG: 14.05.2025; Ogledov: 2; Prenosov: 0
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