Review
Astronomy & Astrophysics
Claude-Andre Faucher-Giguere, S. Peng Oh
Summary: The past decade has witnessed significant theoretical progress in our understanding of the circumgalactic medium (CGM) due to rich observations and advanced simulations. The properties of the CGM are determined by the competition between gravity-driven infall and gas cooling. The interaction between the hot and cold phases of the multiphase gas and the effect of CGM on galaxy evolution remain open questions.
ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS
(2023)
Article
Astronomy & Astrophysics
Sahil Hegde, Steven R. Furlanetto
Summary: The formation of the first stars is a significant event in the universe's history, as these stars play a crucial role in the development of galaxies and the reionization process. A model analyzing the formation of these stars inside minihalos is constructed, taking into account factors such as the ultraviolet background, dark matter-baryon relative velocities, and X-ray background. The model reveals different key epochs for each process, with stream velocity dominating at high redshifts, the UV background setting the tone at intermediate times, and X-rays controlling the end of Pop III star formation at later times.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Atrideb Chatterjee, Pratika Dayal, Valentin Mauerhofer
Summary: We used the delphi model to calculate the redshift evolution of the global 21 cm signal in the first billion years. Our model predicts galaxy populations consistent with data from JWST and ALMA. We explored different scenarios and found that the dust attenuation does not have a significant impact on the global 21 cm signal.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Steven R. Furlanetto, Jordan Mirocha
Summary: In recent years, analytic models have shown that simple assumptions about halo growth and feedback-regulated star formation can match existing observational data on galaxies at z >= 6. By extending these models, it has been demonstrated that stellar feedback time delay caused by supernova explosions leads to burstiness in small galaxies. However, these burst cycles damp out quickly in massive galaxies due to their ability to resist feedback.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Yuxiang Qin, Andrei Mesinger, Sarah E. Bosman, Matteo Viel
Summary: Observations and analysis of Ly alpha forests can reveal information about the epoch of reionization and galaxy properties. The final stages of overlap may occur at lower redshifts, and by forward-modeling high-z Ly alpha forests, constraints on the progress of reionization and galaxy properties can be obtained.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Itamar Reis, Rennan Barkana, Anastasia Fialkov
Summary: This study quantifies the effects of Poisson fluctuations and scatter in the star formation efficiency on the 21-cm signal, and finds that both features have significant effects on the 21-cm power spectrum, especially in scenarios where the signal is dominated by massive galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Yuxiang Qin, J. Stuart B. Wyithe, Pascal A. Oesch, Garth D. Illingworth, Ecaterina Leonova, Simon J. Mutch, Rohan P. Naidu
Summary: This study investigates the Ly alpha IGM transmission and environment of bright galaxies during the epoch of reionization. It reveals that brighter galaxies are less affected by damping-wing absorption, while the transmission of fainter galaxies depends on UV luminosity. The brightest sources are located in the largest ionized regions, leading to a lower incidence of Ly alpha detection in fainter galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Steven R. Furlanetto
Summary: Recent studies have shown that simple models of galaxy formation can accurately match data on high-redshift luminosity functions. These models, while primarily phenomenological, provide insights into the physics of galaxy evolution. New galaxy models introduced here are based on a simple physical framework but incorporate more sophisticated models of feedback, star formation, and other processes.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Bradley Greig, Cathryn M. Trott, Nichole Barry, Simon J. Mutch, Bart Pindor, Rachel L. Webster, J. Stuart B. Wyithe
Summary: By utilizing the latest multiredshift upper limits on the 21-cm signal from the Murchison Widefield Array, disfavoured astrophysical models have been explored, with the majority found to be inconsistent with existing observational constraints. Interestingly, some models inconsistent with the MWA seem to align with other constraints, excluding X-ray emissivity, indicating the unique information provided by the current MWA limits. The study also presents the first limits on the soft-band X-ray emissivity from galaxies at high redshifts, as well as disfavoured limits on the IGM spin temperature.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Bradley Greig, Andrei Mesinger, Leon V. E. Koopmans, Benedetta Ciardi, Garrelt Mellema, Saleem Zaroubi, Sambit K. Giri, Raghunath Ghara, Abhik Ghosh, Ilian T. Iliev, Florent G. Mertens, Rajesh Mondal, Andre R. Offringa, Vishambhar N. Pandey
Summary: By utilizing the latest upper limits on the 21-cm power spectrum at z around 9.1 from LOFAR, the study explores regions of parameter space inconsistent with the data and connects them with existing observational constraints. Models exceeding the 21-cm signal limits are ruled out by other probes, demonstrating the potential of forward modeling tools like 21CMMC in constraining the astrophysics of galaxies at high redshifts.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Julian B. Munoz, Yuxiang Qin, Andrei Mesinger, Steven G. Murray, Bradley Greig, Charlotte Mason
Summary: This research introduces the formation process of the first galaxies during cosmic dawn and reionization, and demonstrates the use of the 21-cm line of neutral hydrogen to map these cosmic milestones and study the galaxies involved. The study upgrades the publicly available code 21cmFAST, introducing a new parametrization method to interpret the observations, and performs a large-scale simulation to improve the previous model by reproducing the observed UV luminosity functions and including a population of molecular-cooling galaxies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Simon Gazagnes, Leon V. E. Koopmans, Michael H. F. Wilkinson
Summary: This study demonstrates the use of 21-cm tomographic statistics in combination with power spectrum analysis to more accurately recover the astrophysics of reionization, providing crucial insights into the physical processes of the Epoch of Reionization.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Julian B. Munoz
Summary: The 21-cm signal during cosmic dawn plays a crucial role in understanding the formation of early cosmic structures. This study presents an effective analytical model, called Zeus21, for predicting the 21-cm signal. By analyzing the correlation between the local star-formation rate density and densities at early times, this model accurately predicts the statistics of radiative fields and demonstrates agreement with state-of-the-art simulations. Its modular design also allows for customization of astrophysical models and exploration of beyond standard-model cosmology. This represents a significant step towards achieving precision cosmology using the 21-cm signal.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
Sambit K. Giri, Garrelt Mellema
Summary: The study proposes measuring the 3D topology of ionized regions during the epoch of reionization using Betti numbers, which show characteristic evolution and can be fitted with simple analytical functions. The evolution of the Betti numbers is connected with the percolation of ionized and neutral regions, differing between reionization scenarios. Extracting topological information from mock 21-cm observations can constrain reionization models.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Harman Deep Kaur, Yuxiang Qin, Andrei Mesinger, Andrea Pallottini, Tassos Fragos, Antara Basu-Zych
Summary: Investigating the impact of metallicity on the X-ray luminosity to star formation rate ratio during Cosmic Dawn allows for indirect study of the properties of HMXBs in early galaxies. Mock observations suggest that constant luminosity to star formation rate models can accurately capture the evolution of the intergalactic medium only during the Epoch of Heating.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Sungryong Hong, Donghui Jeong, Ho Seong Hwang, Juhan Kim, Sungwook E. Hong, Changbom Park, Arjun Dey, Milos Milosavljevic, Karl Gebhardt, Kyoung-Soo Lee
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2020)
Article
Computer Science, Artificial Intelligence
Craig Michoski, Milos Milosavljevic, Todd Oliver, David R. Hatch
Article
Green & Sustainable Science & Technology
Nemanja Milanovic, Milos Milosavljevic, Sladana Benkovic, Dusan Starcevic, Zeljko Spasenic
Article
Economics
Milos Milosavljevic, Sandro Radonovanovic, Boris Delibasic
Summary: The paper proposes a new method combining preference learning and multi-criteria decision making technique to re-evaluate the public procurement performance of EU countries, aiming to provide unbiased ex-post evaluations and focus on critically important public procurement policies.
ECONOMIC COMPUTATION AND ECONOMIC CYBERNETICS STUDIES AND RESEARCH
(2021)
Article
Business
Milenko Radonic, Valentina Vukmirovic, Milos Milosavljevic
Summary: During the COVID-19 pandemic, most companies have implemented a safety-first principle and adopted flexible working arrangements. ICT companies have led the way in offering teleworking and incorporating flexible working hours into their policies. Research has shown that hybrid working models have a positive impact on the intangible assets of ICT companies, potentially driving their financial success.
AMFITEATRU ECONOMIC
(2021)
Article
Economics
Milenko Radonic, Milos Milosavljevic, Snezana Knezevic
Summary: The study analyzed the impact of human, relational, structural, and innovation capital on the financial performance of IT companies, collecting primary data from the IT ecosystem in Southeast Europe. The findings suggest a positive effect of intellectual capital on business performance, raising awareness among business experts in the field of intellectual capital.
E & M EKONOMIE A MANAGEMENT
(2021)
Article
Green & Sustainable Science & Technology
Milos Milosavljevic, Milan Okanovic, Slavica Cicvaric Kostic, Marija Jovanovic, Milenko Radonic
Summary: The aim of this article is to examine the influence of pandemic-specific factors on the use of e-payment, using Serbia as an example. The study is based on primary data gathered through a questionnaire, and the results confirm that variables such as hand sanitization, conspiracy mentality, and financial acumen significantly predict the use of e-payment.
Article
Economics
Milos Milosavljevic, Sandro Radovanovic, Boris Delibasic
Summary: An effective, efficient, fair, and trusted tax administration is crucial for every country, but it faces various challenges such as corruption and lack of flexibility. This study analyzed 35 European tax administrations and identified digitalization as the most influential driver of tax administration performance. Nordic countries and Switzerland serve as role models, and the country-level results can reflect the shadow economy. These findings provide guidance for policymakers in improving tax administration performance.
ECONOMIC MODELLING
(2023)
Review
Business, Finance
Milos Milosavljevic, Zeljko Spasenic, Jovan Krivokapic
Summary: Participatory budgeting has been advocated as an important tool for democratic innovation and has received significant scholarly attention in recent years. This bibliometric review demonstrates that research on participatory budgeting has reached its peak of interest before the COVID-19 pandemic and has expanded to various fields apart from political science.
INTERNATIONAL JOURNAL OF FINANCIAL STUDIES
(2023)
Review
Oncology
Aleksandar Lazovic, Milica Dimitrijevic Stojanovic, Milos Milosavljevic, Vesna Stankovic, Bojan Milosevic, Bojana S. Stojanovic, Marko Spasic, Aleksandar Cvetkovic, Bojan Stojanovic
Summary: This case report describes an incidental neuroendocrine tumor of the appendix discovered during surgery for rectal adenocarcinoma and provides a review of the relevant literature. The small appendiceal mass measuring 0.4 cm in diameter was excised during the operation and histopathological examination confirmed a well-differentiated NET of the appendix. The report underscores the importance of thorough intraoperative examination during colorectal surgeries and highlights the need for increased awareness of appendiceal NETs among surgeons.
Proceedings Paper
Computer Science, Interdisciplinary Applications
Milos Milosavljevic, Zeljko Spasenic, Vesna Damnjanovic
Summary: Limited access to credits by SMEEs is a major barrier for their development and economic growth. MFIs are considered a viable alternative for financing SMEEs. This paper collects evidence on the importance of MFIs for SMEEs' access to finance and concludes that the research in this area has reached saturation, providing sufficient knowledge for policymakers to establish an effective microfinance system.
SUSTAINABLE BUSINESS MANAGEMENT AND DIGITAL TRANSFORMATION: CHALLENGES AND OPPORTUNITIES IN THE POST-COVID ERA
(2023)
Article
Environmental Sciences
Zeljko Spasenic, Milos Milosavljevic, Nemanja Milanovic
Summary: This paper uses bibliometric analysis to explore the scholarly output, geographical distribution, and sub-areas of project financing of renewable energy projects. The results show a growing interest in this topic among scholars and provide potential directions for future research.
FRESENIUS ENVIRONMENTAL BULLETIN
(2022)
Proceedings Paper
Business
Valentina Vukmirovic, Milenko Radonic, Milos Milosavljevic
Summary: This study examines the electronic form of relational capital in fast-moving consumer goods retailers in Serbia and its respective drivers. The results indicate that customer loyalty and brand awareness play a significant role in the customers' side of e-relational capital, while supplier trust and relationship performance are crucial in the suppliers' side.
MARKETING AND SMART TECHNOLOGIES, ICMARKTECH 2021, VOL 2
(2022)
Article
Education & Educational Research
Sladjana Benkovic, Milos Milosavljevic, Zeljko Spasenic, Aleksandra Jovanovic
Summary: This study aims to investigate the effects of individual entrepreneurial orientation on entrepreneurial outcomes in Serbian higher education institutions, examining factors such as research mobilization, unconventionality, industry collaboration, and university policies. The results suggest that entrepreneurial orientation plays a significant role in commercial research outcomes.
CROATIAN JOURNAL OF EDUCATION-HRVATSKI CASOPIS ZA ODGOJ I OBRAZOVANJE
(2022)
Article
Business
Vesna Damnjanovic, William Proud, Milos Milosavljevic
Summary: This study examines the knowledge flow between mentors and strategic management undergraduates preparing for international business case competitions, highlighting the significant impact of extracurricular mentoring on student development and the recursive effects on mentoring activities.
EUROMED JOURNAL OF BUSINESS
(2021)