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3. Wavelength-resolved reverberation mapping of quasar CTS C30.10: Dissecting Mg II and Fe II emission regionsRaj Prince, Michal Zajaček, Bożena Czerny, Piotr Trzcionkowski, Mateusz Bronikowski, Catalina Sobrino Figaredo, Swayamtrupta Panda, Mary Loli Martinez-Aldama, Krzysztof Hryniewicz, Vikram Kumar Jaiswal, Marzena Śniegowska, Mohammad-Hassan Naddaf, Maciej Bilicki, Martin Haas, Marek Jacek Sarna, Vladimir Karas, Aleksandra Olejak, Robert Przyłuski, Mateusz Rałowski, Andrzej Udalski, Ramotholo R. Sefako, Anja Genade, Hannah L. Worters, 2022, original scientific article Abstract: Context. We present the results of the reverberation monitoring of the Mg II broad line and Fe II pseudocontinuum for the luminous quasar CTS C30.10 (z = 0.90052) with the Southern African Large Telescope in 2012–2021.
Aims. We aimed at disentangling the Mg II and UV Fe II variability and the first measurement of UV Fe II time delay for a distant quasar.
Methods. We used several methods for the time-delay measurements and determined the Fe II and Mg II time delays. We also performed a wavelength-resolved time delay study for a combination of Mg II and Fe II in the 2700–2900 Å rest-frame wavelength range.
Results. We obtain a time delay for Mg II of 275.5−19.5+12.4 days in the rest frame, and we have two possible solutions of 270.0−25.3+13.8 days and 180.3−30.0+26.6 in the rest frame for Fe II. Combining this result with the old measurement of Fe II UV time delay for NGC 5548, we discuss for first time the radius-luminosity relation for UV Fe II with the slope consistent with 0.5 within the uncertainties.
Conclusions. Because the Fe II time delay has a shorter time-delay component but the lines are narrower than Mg II, we propose that the line-delay measurement is biased toward the part of the broad line region (BLR) facing the observer. The bulk of the Fe II emission may arise from the more distant BLR region, however, the region that is shielded from the observer. Keywords: accretion, accretion disks / quasars: emission lines / quasars: individual: CTS C30.10 / techniques: spectroscopic / techniques: photometric Published in RUNG: 13.11.2023; Views: 877; Downloads: 4 Full text (3,50 MB) This document has many files! More... |
4. Galvanostatic charge/discharge of thermally treated and ion-beam irradiated graphene oxide/12-tungstophosphoric acid nanocompositesŽeljko Mravik, Jelena Rmuš, Blaž Belec, Andrzej Olejniczak, Nikita Kirilkin, Nemanja Gavrilov, Vladimir Skuratov, Zoran Jovanivić, 2022, published scientific conference contribution abstract Keywords: graphene, tungsten, nanocoposites Published in RUNG: 16.12.2022; Views: 1260; Downloads: 0 This document has many files! More... |
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6. The finite size effects and two-state paradigm of protein foldingArtem Badasyan, Matjaž Valant, Jože Grdadolnik, Vladimir N. Uversky, 2021, original scientific article Abstract: The coil to globule transition of the polypeptide chain is the physical phenomenon behind the folding of globular proteins. Globular proteins with a single domain usually consist of about 30 to 100 amino acid residues, and this finite size extends the transition interval of the coil-globule phase transition. Based on the pedantic derivation of the two-state model, we introduce the number of amino acid residues of a polypeptide chain as a parameter in the expressions for two cooperativity measures and reveal their physical significance. We conclude that the k2 measure, defined as the ratio of van ’t Hoff and calorimetric enthalpy is related to the degeneracy of the denatured state and describes the number of cooperative units involved in the transition; additionally, it is found that the widely discussed k2=1 is just the necessary condition to classify the protein as the two-state folder. We also find that Ωc, a quantity not limited from above and growing with system size, is simply proportional to the square of the transition interval. This fact allows us to perform the classical size scaling analysis of the coil-globule phase transition. Moreover, these two measures are shown to describe different characteristics of protein folding Keywords: protein folding, two-state model, size scaling, thermodynamic cooperativity Published in RUNG: 24.02.2021; Views: 2294; Downloads: 68 Link to full text This document has many files! More... |
7. Ga2Se3 Nanowires via Au-Assisted Heterovalent Exchange Reaction on GaAsFederico Berto, Niloofar Haghighian, Katja Ferfolja, Sandra Gardonio, Mattia Fanetti, Faustino Martelli, Valentina Mussi, Vladimir G. Dubrovskii, Igor V. Shtrom, Alfonso Franciosi, Silvia Rubini, 2020, original scientific article Keywords: nanowires, Gallium arsenide, Gallium Selenide, gold, molecular beam epitaxy Published in RUNG: 15.12.2020; Views: 2608; Downloads: 0 This document has many files! More... |
8. The Yugoslav Partisan ArtGal Kirn, Vladimir Habjan, 2016, original scientific article Abstract: Jernej Habjan and Gal Kirn have edited a special issue of Slavica tergestina devoted to the Yugoslav Partisan art (1941-1945). All the chapters are in English, with abstracts in Russian and English as well as summaries in Slovenian. We highlight the theoretical discussion between Rastko Mocnik and Miklavz Komelj. The chapters are preceded by the introduction by Gal Kirn, and followed by reviews of new books on the Yugoslav Partisan art. Keywords: partisan art, left art, political aesthetics, propaganda, liberation struggle, new Yugoslavia Published in RUNG: 19.08.2020; Views: 2718; Downloads: 0 This document has many files! More... |
9. Measurement of the spectrum of cosmic rays above 10^16.5 eV with Cherenkov–dominated events at the Pierre Auger ObservatoryVladimír Novotný, Andrej Filipčič, Gašper Kukec Mezek, Samo Stanič, Marta Trini, Serguei Vorobiov, Lili Yang, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2019, published scientific conference contribution Keywords: ultra-high energy cosmic rays (UHECRs), Pierre Auger Observatory, UHECR energy spectrum, Cherenkov–dominated UHECR events Published in RUNG: 24.07.2020; Views: 2573; Downloads: 76 Full text (377,09 KB) |
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