1. Testing cosmology and fundamental physics with the Cherenkov Telescope ArrayH. Martínez-Huerta, Christopher Eckner, Gašper Kukec Mezek, Samo Stanič, Serguei Vorobiov, Lili Yang, Gabrijela Zaharijas, Danilo Zavrtanik, Marko Zavrtanik, Lukas Zehrer, 2019, published scientific conference contribution Abstract: The Cherenkov Telescope Array (CTA) is the next generation ground-based observatory for γ-ray astronomy at energies above 30 GeV. Thanks to its unique capabilities, CTA observations will
address a plethora of open questions in astrophysics, ranging from the origin of cosmic messengers to the exploration of the frontiers of physics. In this note, we present a comprehensive sensitivity study to assess the potential of CTA to measure the γ-ray absorption on the extragalactic background light (EBL), to constrain or detect intergalactic magnetic fields (IGMFs), and probe physics beyond the standard model such as axion-like particles (ALPs) and Lorentz invariance violation (LIV), which could modify the γ-ray spectra features expected from EBL absorption. Our results suggest that CTA will have unprecedented sensitivity to detect IGMF signatures and will probe so-far unexplored regions of the LIV and ALP parameter space. Furthermore, an indirect measurement of the EBL and of its evolution will be performed with unrivaled precision. Keywords: very-high-energy gamma rays, the Cherenkov Telescope Array (CTA) Observatory, extragalactic background light (EBL), intergalactic magnetic fields (IGMFs), axion-like particles (ALPs), Lorentz invariance violation (LIV) Published in RUNG: 07.11.2024; Views: 256; Downloads: 4 Full text (739,83 KB) This document has many files! More... |
2. Literatura en práctica: retos profesionales de lectura, traducción y edición en la era digital : manual y cuaderno de actividadesPetra Bader, Raúl Cortés Mena, Emilio J. Gallardo-Saborido, Giuseppe Gatti Riccardi, Urša Geršak, Ilinca Ilian, Bojana Kovačević Petrović, Mercedes Martínez Esperilla, Gabriella Menczel, Barbara Pregelj, Gemma María Santiago Alonso, Maja Šabec, 2024, reviewed university, higher education or higher vocational education textbook Abstract: El manual y el cuaderno de actividades LITPRAX constan de dos partes: 1) un panorama de la producción literaria en español del siglo XXI que acerca a los alumnos a las tendencias actuales de la literatura contemporánea escrita en esta lengua; 2) una serie de planteamientos prácticos (ejercicios, propuestas de proyectos, actividades lúdicas, trabajo colaborativo) sobre las competencias de traducción, edición, escritura y lectura de obras literarias que tienen el fin de fomentar perfiles profesionales alternativos para los estudiantes implicados y, por tanto, potenciar su empleabilidad. Keywords: campo literario, toería de sistemas, Eslovenia, Serbia, Rumanía, literatura espanola y hispanoamericana Published in RUNG: 29.08.2024; Views: 620; Downloads: 5 Full text (8,80 MB) This document has many files! More... |
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: 1794; Downloads: 5 Full text (3,50 MB) This document has many files! More... |
4. A rational design of isoindigo-based conjugated microporous n-type semiconductors for high electron mobility and conductivityKayaramkodath C. Ranjeesh, Ayman Rezk, Jose Ignacio Martinez, Safa Gaber, Areej Merhi, Tina Škorjanc, Matjaž Finšgar, Gisha Elizabeth Luckachan, Ali Trabolsi, Bilal R. Kaafarani, 2023, original scientific article Abstract: The development of n-type organic semiconductors has evolved significantly slower in comparison to that of p-type organic semiconductors mainly due to the lack of electron-deficient building blocks with stability and processability. However, to realize a variety of organic optoelectronic devices, high-performance n-type polymer semiconductors are essential. Herein, conjugated microporous polymers (CMPs) comprising isoindigo acceptor units linked to benzene or pyrene donor units (BI and PI) showing n-type semiconducting behavior are reported. In addition, considering the challenges of deposition of a continuous and homogeneous thin film of CMPs for accurate Hall measurements, a plasma-assisted fabrication technique is developed to yield uniform thin films. The fully conjugated 2D networks in PI- and BI-CMP films display high electron mobility of 6.6 and 3.5 cm2 V−1 s−1, respectively. The higher carrier concentration in PI results in high conductivity (5.3 mS cm−1). Both experimental and computational studies are adequately combined to investigate structure–property relations for this intriguing class of materials in the context of organic electronics. Keywords: conjugated microporous polymers, isoindigo, semiconductors, conductivity, electron mobility Published in RUNG: 18.08.2023; Views: 1739; Downloads: 11 Full text (2,08 MB) This document has many files! More... |
5. Observation of the Cumbre Vieja volcano plume above the Observatorio del Roque de los Muchachos with the Barcelona Raman LIDARMiha Živec, Otger Ballester, Oscar Blanch, Juan Boix, Paolo G. Calisse, Anna Campoy Ordaz, Michele Doro, Lluis Font, Rafael Garcia, Markus Gaug, Roger Grau, Manel Martinez, David Roman, Samo Stanič, Santiago Ubach Ramírez, Marko Zavrtanik, 2022, published scientific conference contribution Keywords: lidar, remote sensing, CTA, CTAO, Cumbre Vieja, atmospheric monitoring, volcano Published in RUNG: 13.02.2023; Views: 1886; Downloads: 21 Full text (3,49 MB) |
6. Enterohemorrhagic Escherichia coli O157: H7 isolates from children in CubaAdalberto Águila, Robert Alvin Bernedo Navarro, Rosabel Falcón, Magilé Fonseca, Luis Sarmiento, Osmel Domínguez, Humberto Bonaechea, Liliam Martínez, 2008, other scientific articles Keywords: Escherichia coli, shiga toxins, children, Cuba Published in RUNG: 27.05.2019; Views: 9111; Downloads: 0 This document has many files! More... |
7. Flexible organic/inorganic hybrid solar cells based on conjugated polymer and ZnO nanorod arrayFei Tong, Kyusang Kim, Daniel Martinez, Resham Thapa, Ayayi Ahyi, John Williams, Dong-Joo Kim, Sungkoo Lee, Eunhee Lim, Kyeong K Lee, Minseo ParK, 2012, original scientific article Keywords: organic/inorganic hybrid solar cells, conjugated polymer, ZnO nanorod array Published in RUNG: 16.01.2017; Views: 5440; Downloads: 0 This document has many files! More... |
8. Encapsulation efficiency of CdSe/ZnS quantum dots by liposomes determined by thermal lens microscopyDorota Korte, Jessica Batalla, Humberto Cabrera, Eduardo San Martín-Martínez, Antonio Calderón, Ernesto Marín Moares, 2015, original scientific article Keywords: microscopy, imaging systems, thermal lensing, medical imaging, biological imaging, cell analysis Published in RUNG: 17.05.2016; Views: 5178; Downloads: 144 Link to full text |