151. MAGIC detection of GRB 201216C at z = 1.1H. Abe, S. Abe, V. A. Acciari, I. Agudo, T. Aniello, S. Ansoldi, L. A. Antonelli, A. Arbet Engels, C. Arcaro, Andreja Gomboc, 2023, izvirni znanstveni članek Ključne besede: astronomija, izbruhi sevanja gama, MAGIC teleskop Objavljeno v RUNG: 15.01.2024; Ogledov: 318; Prenosov: 6 Celotno besedilo (630,81 KB) Gradivo ima več datotek! Več... |
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153. The third Fermi Large Area Telescope catalog of gamma-ray pulsarsD. A. Smith, S. Abdollahi, M. Ajello, M. Bailes, L. Baldini, J. Ballet, M. G. Baring, C. Bassa, J. Becerra Gonzalez, R. Bellazzini, Gabrijela Zaharijas, 2023, izvirni znanstveni članek Ključne besede: gamma ray astrophysics, catalogues, pulsars Objavljeno v RUNG: 15.01.2024; Ogledov: 353; Prenosov: 6 Celotno besedilo (10,64 MB) Gradivo ima več datotek! Več... |
154. Fermi-GBM discovery of GRB 221009A : an extraordinarily bright GRB from onset to afterglowS. Lesage, P. Veres, M. S. Briggs, A. Goldstein, D. Kocevski, E. Burns, C. A. Wilson-Hodge, P. N. Bhat, D. Huppenkothen, Gabrijela Zaharijas, 2023, izvirni znanstveni članek Ključne besede: gamma-ray bursts, GRB 221009A, cosmic ray astronomy Objavljeno v RUNG: 15.01.2024; Ogledov: 348; Prenosov: 4 Celotno besedilo (3,55 MB) Gradivo ima več datotek! Več... |
155. Mind the gap : the discrepancy between simulation and reality drives interpretations of the Galactic Center ExcessSascha Caron, Christopher Eckner, Luc Hendriks, Gudlaugur Johannesson, Roberto Ruiz de Austri, Gabrijela Zaharijas, 2023, izvirni znanstveni članek Ključne besede: gamma-ray astrophysics, dark matter, galactic center Objavljeno v RUNG: 15.01.2024; Ogledov: 340; Prenosov: 5 Celotno besedilo (7,22 MB) Gradivo ima več datotek! Več... |
156. The fourth catalog of active galactic nuclei detected by the Fermi Large Area Telescope : data release 3M. Ajello, L. Baldini, J. Ballet, D. Bastieri, J. Becerra Gonzalez, R. Bellazzini, A. Berretta, E. Bissaldi, R. Bonino, Gabrijela Zaharijas, 2022, izvirni znanstveni članek Ključne besede: gamma ray astrophysics, active galactic nucleai Objavljeno v RUNG: 15.01.2024; Ogledov: 331; Prenosov: 5 Celotno besedilo (1,00 MB) Gradivo ima več datotek! Več... |
157. A gamma-ray pulsar timing array constrains the nanohertz gravitational wave backgroundM. Ajello, W. B. Atwood, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, R. Bellazzini, A. Berretta, B. Bhattacharyya, Gabrijela Zaharijas, 2022, izvirni znanstveni članek Ključne besede: pulsar timing array, gravitational waves Objavljeno v RUNG: 15.01.2024; Ogledov: 330; Prenosov: 0 Gradivo ima več datotek! Več... |
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160. Variability in sediment particle size, mineralogy, and Fe mode of occurrence across dust-source inland drainage basins : the case of the lower Drâa Valley, MoroccoAdolfo Gonzalez-Romero, Cristina González-Flórez, Agnesh Panta, Jesús Yus-Díez, Cristina Reche, Patricia Córdoba, Natalia Moreno, Andrés Alastuey, Konrad Kandler, Martina Klose, 2023, izvirni znanstveni članek Opis: The effects of desert dust upon climate and ecosystems depend strongly on its particle size and size-resolved mineralogical composition. However, there is very limited quantitative knowledge on the particle size and composition of the parent sediments along with their variability within dust-source regions, particularly in dust emission hotspots. The lower Drâa Valley, an inland drainage basin and dust hotspot region located in the Moroccan Sahara, was chosen for a comprehensive analysis of sediment particle size and mineralogy. Different sediment type samples (n= 42) were collected, including paleo-sediments, paved surfaces, crusts, and dunes, and analysed for particle-size distribution (minimally and fully dispersed samples) and mineralogy. Furthermore, Fe sequential wet extraction was carried out to characterise the modes of occurrence of Fe, including Fe in Fe (oxyhydr)oxides, mainly from goethite and hematite, which are key to dust radiative effects; the poorly crystalline pool of Fe (readily exchangeable ionic Fe and Fe in nano-Fe oxides), relevant to dust impacts upon ocean biogeochemistry; and structural Fe. Results yield a conceptual model where both particle size and mineralogy are segregated by transport and deposition of sediments during runoff of water across the basin and by the precipitation of salts, which causes a sedimentary fractionation. The proportion of coarser particles enriched in quartz is higher in the highlands, while that of finer particles rich in clay, carbonates, and Fe oxides is higher in the lowland dust emission hotspots. There, when water ponds and evaporates, secondary carbonates and salts precipitate, and the clays are enriched in readily exchangeable ionic Fe, due to sorption of dissolved Fe by illite. The results differ from currently available mineralogical atlases and highlight the need for observationally constrained global high-resolution mineralogical data for mineral-speciated dust modelling. The dataset obtained represents an important resource for future evaluation of surface mineralogy retrievals from spaceborne spectroscopy. Ključne besede: mineral dust, aerosols, geology Objavljeno v RUNG: 12.01.2024; Ogledov: 427; Prenosov: 3 Celotno besedilo (7,63 MB) Gradivo ima več datotek! Več... |