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2. Controllability for a non-local formulation of surface gravity waves

Author

Fontelos, M. A., Lecaros, R., López-Ríos, J., and Pérez, A.

Subjects
Mathematics - Analysis of PDEs, 93B05, 35Q31, 44A15
Abstract

In this paper, we study the approximate controllability of a system governed by an evolution problem known as the sloshing problem. This problem involves a spatial, nonlocal differential operator inherent in the dynamics of a two-dimensional, incompressible, non-viscous fluid within a confined domain. Our work establishes unique continuation results that enable the application of source control localized in an interior domain, allowing the aforementioned controllability.

Published
2024

3. Collisional alignment and molecular rotation control chemi-ionization of individual conformers

Author

Ploenes, L., Straňák, P., Mishra, A., Liu, X., Pérez-Ríos, J., and Willitsch, S.

Subjects
Physics - Chemical Physics
Abstract

The relationship between the shape of a molecule and its chemical reactivity is a central tenet in chemistry. However, the influence of the molecular geometry on reactivity can be subtle and result from several opposing effects. Using a novel crossed-molecular-beam experiment in which individual rotational quantum states of specific conformers of a molecule are separated, we study the chemi-ionization reaction of hydroquinone with metastable neon atoms. We show that collision-induced alignment of the reaction partners caused by geometry-dependent long-range forces crucially influences reaction pathways for distinct conformers which is, however, countered by molecular rotation. We demonstrate how the interplay between molecular geometry, chemical steering forces and rotational dynamics govern the outcome of reactions and illustrate the capability of advanced molecule-control techniques to unravel these effects., Comment: 17 pages, 9 figures

Published
2024

4. EUSO-SPB1 Mission and Science

Author

Collaboration, JEM-EUSO, Abdellaoui, G., Abe, S., Adams. Jr., J. H., Allard, D., Alonso, G., Anchordoqui, L., Anzalone, A., Arnone, E., Asano, K., Attallah, R., Attoui, H., Pernas, M. Ave, Bachmann, R., Bacholle, S., Bagheri, M., Bakiri, M., Baláz, J., Barghini, D., Bartocci, S., Battisti, M., Bayer, J., Beldjilali, B., Belenguer, T., Belkhalfa, N., Bellotti, R., Belov, A. A., Benmessai, K., Bertaina, M., Bertone, P. F., Biermann, P. L., Bisconti, F., Blaksley, C., Blanc, N., Blin-Bondil, S., Bobik, P., Bogomilov, M., Bolmgren, K., Bozzo, E., Briz, S., Bruno, A., Caballero, K. S., Cafagna, F., Cambié, G., Campana, D., Capdevielle, J. N., Capel, F., Caramete, A., Caramete, L., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Catalano, O., Cellino, A., Černý, K., Chikawa, M., Chiritoi, G., Christl, M. J., Colalillo, R., Conti, L., Cotto, G., Crawford, H. J., Cremonini, R., Creusot, A., Cummings, A., Gónzalez, A. de Castro, de la Taille, C., del Peral, L., Desiato, J., Damian, A. Diaz, Diesing, R., Dinaucourt, P., Djakonow, A., Djemil, T., Ebersoldt, A., Ebisuzaki, T., Eser, J., Fenu, F., Fernández-González, S., Ferrarese, S., Filippatos, G., Finch, W., Fornaro, C., Fouka, M., Franceschi, A., Franchini, S., Fuglesang, C., Fujii, T., Fukushima, M., Galeotti, P., García-Ortega, E., Gardiol, D., Garipov, G. K., Gascón, E., Gazda, E., Genci, J., Golzio, A., Gorodetzky, P., Gregg, R., Green, A., Guarino, F., Guépin, C., Guzmán, A., Hachisu, Y., Haungs, A., Heigbes, T., Carretero, J. Hernández, Hulett, L., Ikeda, D., Inoue, N., Inoue, S., Isgrò, F., Itow, Y., Jammer, T., Jeong, S., Jochum, J., Joven, E., Judd, E. G., Jung, A., Kajino, F., Kajino, T., Kalli, S., Kaneko, I., Kasztelan, M., Katahira, K., Kawai, K., Kawasaki, Y., Kedadra, A., Khales, H., Khrenov, B. A., Kim, Jeong-Sook, Kim, Soon-Wook, Kleifges, M., Klimov, P. A., Kreykenbohm, I., Krizmanic, J. F., Królik, K., Kungel, V., Kurihara, Y., Kusenko, A., Kuznetsov, E., Lahmar, H., Lakhdari, F., Licandro, J., Campano, L. López, Martínez, F. López, Mackovjak, S., Mahdi, M., Mandát, D., Manfrin, M., Marcelli, L., Marcos, J. L., Marszał, W., Martín, Y., Martinez, O., Mase, K., Mastafa, M., Matthews, J. N., Mebarki, N., Medina-Tanco, G., Menshikov, A., Merino, A., Mese, M., Meseguer, J., Meyer, S. S., Mimouni, J., Miyamoto, H., Mizumoto, Y., Monaco, A., Ríos, J. A. Morales de los, Nachtman, J. M., Nagataki, S., Naitamor, S., Napolitano, T., Neronov, A., Nomoto, K., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A. V., Onel, Y., Osteria, G., Otte, A. N., Pagliaro, A., Painter, W., Panasyuk, M. I., Panico, B., Parizot, E., Park, I. H., Pastircak, B., Paul, T., Pech, M., Pérez-Grande, I., Perfetto, F., Peter, T., Picozza, P., Pindado, S., Piotrowski, L. W., Piraino, S., Plebaniak, Z., Pollini, A., Popescu, E. M., Prevete, R., Prévôt, G., Prieto, H., Przybylak, M., Puehlhofer, G., Putis, M., Reardon, P., Reno, M. H., Reyes, M., Ricci, M., Frías, M. D. Rodríguez, Matamala, O. F. Romero, Ronga, F., Sabau, M. D., Saccá, G., Sagawa, H., Sahnoune, Z., Saito, A., Sakaki, N., Salazar, H., Sánchez, J. L., Balanzar, J. C. Sanchez, Santangelo, A., Sanz-Andrés, A., Saprykin, O. A., Sarazin, F., Sato, M., Scagliola, A., Schanz, T., Schieler, H., Schovánek, P., Scotti, V., Serra, M., Sharakin, S. A., Shimizu, H. M., Shinozaki, K., Soriano, J. F., Sotgiu, A., Stan, I., Strharský, I., Sugiyama, N., Supanitsky, D., Suzuki, M., Szabelski, J., Tajima, N., Tajima, T., Takahashi, Y., Takeda, M., Takizawa, Y., Talai, M. C., Tameda, Y., Tenzer, C., Thomas, S. B., Tibolla, O., Tkachev, L. G., Tomida, T., Tone, N., Toscano, S., Traïche, M., Tsunesada, Y., Tsuno, K., Turriziani, S., Uchihori, Y., Valdés-Galicia, J. F., Vallania, P., Valore, L., Vankova-Kirilova, G., Venters, T. M., Vigorito, C., Villaseñor, L., Vlcek, B., von Ballmoos, P., Vrabel, M., Wada, S., Watanabe, J., Watts. Jr., J., Muñoz, R. Weigand, Weindl, A., Wiencke, L., Wille, M., Wilms, J., Yamamoto, T., Yang, J., Yano, H., Yashin, I. V., Yonetoku, D., Yoshida, S., Young, R., Zgura, I. S., Zotov, M. Yu., and Marchi, A. Zuccaro

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The Extreme Universe Space Observatory on a Super Pressure Balloon 1 (EUSO-SPB1) was launched in 2017 April from Wanaka, New Zealand. The plan of this mission of opportunity on a NASA super pressure balloon test flight was to circle the southern hemisphere. The primary scientific goal was to make the first observations of ultra-high-energy cosmic-ray extensive air showers (EASs) by looking down on the atmosphere with an ultraviolet (UV) fluorescence telescope from suborbital altitude (33~km). After 12~days and 4~hours aloft, the flight was terminated prematurely in the Pacific Ocean. Before the flight, the instrument was tested extensively in the West Desert of Utah, USA, with UV point sources and lasers. The test results indicated that the instrument had sensitivity to EASs of approximately 3 EeV. Simulations of the telescope system, telescope on time, and realized flight trajectory predicted an observation of about 1 event assuming clear sky conditions. The effects of high clouds were estimated to reduce this value by approximately a factor of 2. A manual search and a machine-learning-based search did not find any EAS signals in these data. Here we review the EUSO-SPB1 instrument and flight and the EAS search., Comment: 18 pages, 19 figures

Published
2024
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5. Developments and results in the context of the JEM-EUSO program obtained with the ESAF Simulation and Analysis Framework

Author

Abe, S., Adams Jr., J. H., Allard, D., Alldredge, P., Anchordoqui, L., Anzalone, A., Arnone, E., Baret, B., Barghini, D., Battisti, M., Bayer, J., Bellotti, R., Belov, A. A., Bertaina, M., Bertone, P. F., Bianciotto, M., Biermann, P. L., Bisconti, F., Blaksley, C., Blin-Bondil, S., Bobik, P., Bolmgren, K., Briz, S., Burton, J., Cafagna, F., Cambié, G., Campana, D., Capel, F., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Černý, K., Christl, M. J., Colalillo, R., Conti, L., Cotto, G., Crawford, H. J., Cremonini, R., Creusot, A., Cummings, A., Gónzalez, A. de Castro, de la Taille, C., del Peral, L., Diesing, R., Dinaucourt, P., Di Nola, A., Ebersoldt, A., Ebisuzaki, T., Eser, J., Fenu, F., Ferrarese, S., Filippatos, G., Finch, W. W., Flaminio, F., Fornaro, C., Fuehne, D., Fuglesang, C., Fukushima, M., Gardiol, D., Garipov, G. K., Golzio, A., Gorodetzky, P., Guarino, F., Guépin, C., Guzmán, A., Haungs, A., Heibges, T., Hernández-Carretero, J., Isgrò, F., Judd, E. G., Kajino, F., Kaneko, I., Kawasaki, Y., Kleifges, M., Klimov, P. A., Kreykenbohm, I., Krizmanic, J. F., Kungel, V., Kuznetsov, E., Martínez, F. López, Mackovjak, S., Mandát, D., Manfrin, M., Marcelli, A., Marcelli, L., Marszał, W., Matthews, J. N., Menshikov, A., Mernik, T., Mese, M., Meyer, S. S., Mimouni, J., Miyamoto, H., Mizumoto, Y., Monaco, A., Ríos, J. A Morales de los, Nagataki, S., Nachtman, J. M., Naumov, D., Neronov, A., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A. V., Onel, Y., Osteria, G., Pagliaro, A., Panico, B., Parizot, E., Park, I. H., Pastircak, B., Paul, T., Pech, M., Perfetto, F., Picozza, P., Piotrowski, L. W., Plebaniak, Z., Posligua, J., Prevete, R., Prévôt, G., Prieto, H., Przybylak, M., Putis, M., Reali, E., Reardon, P., Reno, M. H., Ricci, M., Frías, M. Rodríguez, Romoli, G., Cano, G. Sáez, Sagawa, H., Sakaki, N., Santangelo, A., Saprykin, O. A., Sarazin, F., Sato, M., Schieler, H., Schovánek, P., Scotti, V., Selmane, S., Sharakin, S. A., Shinozaki, K., Soriano, J. F., Szabelski, J., Tajima, N., Tajima, T., Takahashi, Y., Takeda, M., Takizawa, Y., Tenzer, C., Thomas, S. B., Tkachev, L. G., Tomida, T., Toscano, S., Traïche, M., Trofimov, D., Tsuno, K., Vallania, P., Valore, L., Venters, T. M., Vigorito, C., von Ballmoos, P., Vrabel, M., Wada, S., Watts Jr., J., Weindl, A., Wiencke, L., Wilms, J., Winn, D., Wistrand, H., Yashin, I. V., Young, R., and Zotov, M. Yu.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, High Energy Physics - Experiment
Abstract

JEM--EUSO is an international program for the development of space-based Ultra-High Energy Cosmic Ray observatories. The program consists of a series of missions which are either under development or in the data analysis phase. All instruments are based on a wide-field-of-view telescope, which operates in the near-UV range, designed to detect the fluorescence light emitted by extensive air showers in the atmosphere. We describe the simulation software ESAFin the framework of the JEM--EUSO program and explain the physical assumptions used. We present here the implementation of the JEM--EUSO, POEMMA, K--EUSO, TUS, Mini--EUSO, EUSO--SPB1 and EUSO--TA configurations in ESAF. For the first time ESAF simulation outputs are compared with experimental data.

Published
2023
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6. Spectroscopic constants from atomic properties: a machine learning approach

Author

Ibrahim, Mahmoud A. E., LiU, X., and Pérez-Ríos, J.

Subjects
Physics - Chemical Physics
Abstract

We present a machine-learning approach toward predicting spectroscopic constants based on atomic properties. After collecting spectroscopic information on diatomics and generating an extensive database, we employ Gaussian process regression to identify the most efficient characterization of molecules to predict the equilibrium distance, vibrational harmonic frequency, and dissociation energy. As a result, we show that it is possible to predict the equilibrium distance with an absolute error of 0.04 {\AA} and vibrational harmonic frequency with an absolute error of 36 $\text{cm}^{-1}$, including only atomic properties. These results can be improved by including prior information on molecular properties leading to an absolute error of 0.02 {\AA} and 28 $\text{cm}^{-1}$ for the equilibrium distance and vibrational harmonic frequency, respectively. In contrast, the dissociation energy is predicted with an absolute error $\lesssim 0.4$ eV. Alongside these results, we prove that it is possible to predict spectroscopic constants of homonuclear molecules from the atomic and molecular properties of heteronuclear. Finally, based on our results, we present a new way to classify diatomic molecules beyond chemical bond properties.

Published
2023

8. Statistical adiabatic channel model for termolecular reactions.

Author

Pérez-Ríos, J.

Subjects
*DEGREES of freedom, *TEMPERATURE
Abstract

In this work, we present a statistical adiabatic channel model for termolecular reactions, A + B + C → Products. Our approach relies on hyperspherical coordinates, where the adiabatic channels are readily defined in the hyper-radius after averaging the hyperangular degrees of freedom. In this way, we find a general expression for termolecular rate constants. We focus on ion-neutral association reactions to test our approach's accuracy and predictive power, finding a good agreement between theory and experiment, especially in those reactions' temperature dependence. [ABSTRACT FROM AUTHOR]

Published
2024
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9. Trap-assisted complexes in cold atom-ion collisions

Author

Hirzler, H., Trimby, E., Gerritsma, R., Safavi-Naini, A., and Pérez-Ríos, J.

Subjects
Physics - Atomic Physics
Abstract

We theoretically investigate the trap-assisted formation of complexes in atom-ion collisions and their impact on the stability of the trapped ion. The time-dependent potential of the Paul trap facilitates the formation of temporary complexes by reducing the energy of the atom, which gets temporarily stuck in the atom-ion potential. As a result, those complexes significantly impact termolecular reactions leading to molecular ion formation via three-body recombination. We find that complex formation is more pronounced in systems with heavy atoms, but the mass has no influence on the lifetime of the transient state. Instead, the complex formation rate strongly depends on the amplitude of the ion's micromotion. We also show that complex formation persists even in the case of a time-independent harmonic trap. In this case, we find higher formation rates and longer lifetimes than the Paul trap, indicating that the atom-ion complex plays an essential role in atom-ion mixtures in optical traps., Comment: 6 pages, 4 figures

Published
2022
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10. The chemistry of AlF and CaF production in buffer gas sources

Author

Liu, X., Wang, W., Wright, S. C., Doppelbauer, M., Meijer, G., Truppe, S., and Pérez-Ríos, J.

Subjects
Physics - Computational Physics, Physics - Chemical Physics
Abstract

In this work, we explore the role of chemical reactions on the properties of buffer gas-cooled molecular beams. In particular, we focus on scenarios relevant to the formation of AlF and CaF via chemical reactions between the Ca and Al atoms ablated from a solid target in an atmosphere of a fluorine-containing gas, in this case, SF6 and NF3. Reactions are studied following an ab initio molecular dynamics approach, and the results are rationalized following a tree-shaped reaction model based on Bayesian inference. We find that NF3 reacts more efficiently with hot metal atoms to form monofluoride molecules than SF6. In addition, when using NF3, the reaction products have lower kinetic energy, requiring fewer collisions to thermalize with the cryogenic helium. Furthermore, we find that the reaction probability for AlF formation is much higher than for CaF across a broad range of temperatures.

Published
2022
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11. Snowmass2021 Cosmic Frontier: The landscape of low-threshold dark matter direct detection in the next decade

Author

Essig, Rouven, Giovanetti, Graham K., Kurinsky, Noah, McKinsey, Dan, Ramanathan, Karthik, Stifter, Kelly, Yu, Tien-Tien, Aboubrahim, A., Adams, D., Alves, D. S. M., Aralis, T., Araújo, H. M., Baxter, D., Berghaus, K. V., Berlin, A., Blanco, C., Bloch, I. M., Bonivento, W. M., Bunker, R., Burdin, S., Caminata, A., Carmona-Benitez, M. C., Chaplinsky, L., Chen, T. Y., Derenzo, S. E., de Viveiros, L., Dick, R., Di Marco, N., Du, P., Dutta, B., Ebadi, R., Emken, T., Esposito, A., Etzion, E., Feng, J. L., Fernandez, N., Ge, S. -F., Ghosh, S., Giroux, G., Hamaide, L., Hertel, S. A., Herrera, G., Hochberg, Y., Kahn, Y., Kavanagh, B. J., Khan, A. N., Kluck, H., Kravitz, S., von Krosigk, B., Kumar, J., Lawson, I. T., Lehmann, B. V., Lin, T., Liao, J., Lyon, S. A., Majewski, P. M., Manzari, C. A., Monroe, J., Monzani, M. E., Morrissey, D. E., Norcini, D., Orly, A., Parikh, A., Park, J. -C., Patel, P. K., Paul, S., Pèrez-Ríos, J., Phipps, A., Pocar, A., Ritz, A., Sarkis, Y., Schuster, P., Schwetz, T., Shaw, S., Shin, S., Singal, A., Singh, R., Slone, O., Sorensen, P., Sun, C., Szydagis, M., Temples, D. J., Testera, G., Thieme, K., Toro, N., Trickle, T., Uemura, S., Velan, V., Vitagliano, E., Wagner, F., Wang, G., Westerdale, S., and Zurek, K. M.

Subjects
High Energy Physics - Phenomenology, Astrophysics - Cosmology and Nongalactic Astrophysics, High Energy Physics - Experiment
Abstract

The search for particle-like dark matter with meV-to-GeV masses has developed rapidly in the past few years. We summarize the science case for these searches, the recent progress, and the exciting upcoming opportunities. Funding for Research and Development and a portfolio of small dark matter projects will allow the community to capitalize on the substantial recent advances in theory and experiment and probe vast regions of unexplored dark-matter parameter space in the coming decade., Comment: Contribution to Snowmass 2021. v2: includes endorsers and minor changes

Published
2022

12. JEM-EUSO Collaboration contributions to the 37th International Cosmic Ray Conference

Author

Abdellaoui, G., Abe, S., Adams Jr., J. H., Allard, D., Alonso, G., Anchordoqui, L., Anzalone, A., Arnone, E., Asano, K., Attallah, R., Attoui, H., Pernas, M. Ave, Bagheri, M., Baláz, J., Bakiri, M., Barghini, D., Bartocci, S., Battisti, M., Bayer, J., Beldjilali, B., Belenguer, T., Belkhalfa, N., Bellotti, R., Belov, A. A., Benmessai, K., Bertaina, M., Bertone, P. F., Biermann, P. L., Bisconti, F., Blaksley, C., Blanc, N., Blin-Bondil, S., Bobik, P., Bogomilov, M., Bolmgren, K., Bozzo, E., Briz, S., Bruno, A., Caballero, K. S., Cafagna, F., Cambié, G., Campana, D., Capdevielle, J-N., Capel, F., Caramete, A., Caramete, L., Carlson, P., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Catalano, O., Cellino, A., Černý, K., Chikawa, M., Chiritoi, G., Christl, M. J., Colalillo, R., Conti, L., Cotto, G., Crawford, H. J., Cremonini, R., Creusot, A., Gónzalez, A. de Castro, de la Taille, C., del Peral, L., Damian, A. Diaz, Diesing, R., Dinaucourt, P., Djakonow, A., Djemil, T., Ebersoldt, A., Ebisuzaki, T., Eser, J., Fenu, F., Fernández-González, S., Ferrarese, S., Filippatos, G., Fornaro, W. I. Finch C., Fouka, M., Franceschi, A., Franchini, S., Fuglesang, C., Fujii, T., Fukushima, M., Galeotti, P., García-Ortega, E., Gardiol, D., Garipov, G. K., Gascón, E., Gazda, E., Genci, J., Golzio, A., Alvarado, C. González, Gorodetzky, P., Green, A., Guarino, F., Guépin, C., Guzmán, A., Hachisu, Y., Haungs, A., Carretero, J. Hernández, Hulett, L., Ikeda, D., Inoue, N., Inoue, S., Isgrò, F., Itow, Y., Jammer, T., Jeong, S., Joven, E., Judd, E. G., Jochum, J., Kajino, F., Kajino, T., Kalli, S., Kaneko, I., Karadzhov, Y., Kasztelan, M., Katahira, K., Kawai, K., Kawasaki, Y., Kedadra, A., Khales, H., Khrenov, B. A., Kim, Jeong-Sook, Kim, Soon-Wook, Kleifges, M., Klimov, P. A., Kolev, D., Kreykenbohm, I., Krizmanic, J. F., Królik, K., Kungel, V., Kurihara, Y., Kusenko, A., Kuznetsov, E., Lahmar, H., Lakhdari, F., Licandro, J., Campano, L. López, Martínez, F. López, Mackovjak, S., Mahdi, M., Mandát, D., Manfrin, M., Marcelli, L., Marcos, J. L., Marszał, W., Martín, Y., Martinez, O., Mase, K., Matev, R., Matthews, J. N., Mebarki, N., Medina-Tanco, G., Menshikov, A., Merino, A., Mese, M., Meseguer, J., Meyer, S. S., Mimouni, J., Miyamoto, H., Mizumoto, Y., Monaco, A., Ríos, J. A. Morales de los, Mastafa, M., Nagataki, S., Naitamor, S., Napolitano, T., Neronov, J. M. Nachtman A., Nomoto, K., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A. V., Osteria, Y. Onel G., Otte, A. N., Pagliaro, A., Painter, W., Panasyuk, M. I., Panico, B., Parizot, E., Park, I. H., Pastircak, B., Paul, T., Pech, M., Pérez-Grande, I., Perfetto, F., Peter, T., Picozza, P., Pindado, S., Piotrowski, L. W., Piraino, S., Plebaniak, Z., Pollini, A., Popescu, E. M., Prevete, R., Prévôt, G., Prieto, H., Przybylak, M., Puehlhofer, G., Putis, M., Reardon, P., Reno, M. H., Reyes, M., Ricci, M., Frías, M. D. Rodríguez, Matamala, O. F. Romero, Ronga, F., Sabau, M. D., Saccá, G., Cano, G. Sáez, Sagawa, H., Sahnoune, Z., Saito, A., Sakaki, N., Salazar, H., Balanzar, J. C. Sanchez, Sánchez, J. L., Santangelo, A., Sanz-Andrés, A., Palomino, M. Sanz, Saprykin, O. A., Sarazin, F., Sato, M., Scagliola, A., Schanz, T., Schieler, H., Schovánek, P., Scotti, V., Serra, M., Sharakin, S. A., Shimizu, H. M., Shinozaki, K., Soriano, J. F., Sotgiu, A., Stan, I., Strharský, I., Sugiyama, N., Supanitsky, D., Suzuki, M., Szabelski, J., Tajima, N., Tajima, T., Takahashi, Y., Takeda, M., Takizawa, Y., Talai, M. C., Tameda, Y., Tenzer, C., Thomas, S. B., Tibolla, O., Tkachev, L. G., Tomida, T., Tone, N., Toscano, S., Traïche, M., Tsunesada, Y., Tsuno, K., Turriziani, S., Uchihori, Y., Vaduvescu, O., Valdés-Galicia, J. F., Vallania, P., Valore, L., Vankova-Kirilova, G., Venters, T. M., Vigorito, C., Villaseñor, L., Vlcek, B., von Ballmoos, P., Vrabel, M., Wada, S., Watanabe, J., Watts Jr., J., Muñoz, R. Weigand, Weindl, A., Wiencke, L., Wille, M., Wilms, J., Yamamoto, D. Winn T., Yang, J., Yano, H., Yashin, I. V., Yonetoku, D., Yoshida, S., Young, R., Zgura, I. S., Zotov, M. Yu., and Marchi, A. Zuccaro

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Compilation of papers presented by the JEM-EUSO Collaboration at the 37th International Cosmic Ray Conference (ICRC), held on July 12-23, 2021 (online) in Berlin, Germany., Comment: html page with links to the JEM-EUSO Collaboration papers presented at ICRC-2021, Berlin, Germany

Published
2022

13. Sulfur recombination: A direct approach.

Author

Koots, R., Brown, G., and Pérez-Ríos, J.

Subjects
SULFUR, THRUSHES, TEMPERATURE, MEASUREMENT
Abstract

This work presents a direct three-body recombination approach of the sulfur recombination reaction, S + S + M → S2 + M, at temperatures between 100 and 500 K. Our calculations for M = Ar, based on a classical trajectory approach in hyperspherical coordinates, show excellent agreement with the experimental measurement at T = 298 K of Fair and Thrush [Trans. Faraday Soc. 65, 1208 (1969)]. Similarly, we find that the production of S2 strongly depends on the SAr product, the other possible reaction channel. Finally, using the classical threshold law, we check sulfur recombination with another third body, M = H2S, and find no significant change in the rate. [ABSTRACT FROM AUTHOR]

Published
2024
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14. Observation of Chemical Reactions between a Trapped Ion and Ultracold Feshbach Dimers

Author

Hirzler, H., Lous, R. S., Trimby, E., Pérez-Ríos, J., Safavi-Naini, A., and Gerritsma, R.

Subjects
Physics - Atomic Physics, Quantum Physics
Abstract

We measure chemical reactions between a single trapped $^{174}$Yb$^+$ ion immersed in an ultracold bath of $^6$Li atoms containing trace amounts of Li$_2$ dimers. This produces LiYb$^+$ molecular ions that we detect via mass spectrometry. We explain the reaction rates by modelling the dimer density as a function of the magnetic field and obtain excellent agreement when we assume the reaction to follow the Langevin rate. Our results present a novel approach towards the creation of cold molecular ions and point to the exploration of ultracold chemistry in ion molecule collisions. What is more, with a detection sensitivity below molecule densities of $10^{14}\,\mathrm{m}^{-3}$, we provide a new method to detect low-density molecular gases., Comment: 10 pages, 8 figures

Published
2021
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16. Influence of laparoscopic surgery on the outcomes of radical cystectomy within a multimodal rehabilitation protocol

Author

Muñiz Suárez, L., Subirá Ríos, J., Gayarre Abril, P., Montero Martorán, A., Hijazo Conejos, J.I., García Alarcón, J., García-Magariño Alonso, J., Medrano Llorente, P., Ramírez Fabián, M., Elizalde Benito, F.X., Murillo Pérez, C., Utrilla Ibuarben, M., Asensio Matas, A., Marín Zaldívar, C., Casans Francés, R., Ramírez Rodríguez, J.M., Blasco Beltrán, B., and Carrera-Lasfuentes, P.

Published
2024
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17. Influencia de la cirugía laparoscópica dentro de un protocolo de rehabilitación multimodal en cistectomía radical

Author

Muñiz Suárez, L., Subirá Ríos, J., Gayarre Abril, P., Montero Martorán, A., Hijazo Conejos, J.I., García Alarcón, J., García-Magariño Alonso, J., Medrano Llorente, P., Ramírez Fabián, M., Elizalde Benito, F.X., Murillo Pérez, C., Utrilla Ibuarben, M., Asensio Matas, A., Marín Zaldívar, C., Casans Francés, R., Ramírez Rodríguez, J.M., Blasco Beltrán, B., and Carrera-Lasfuentes, P.

Published
2024
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18. The stability for an inverse problem of bottom recovering in water-waves

Author

Lecaros, R., López-Ríos, J., Ortega, J. H., and Zamorano, S.

Subjects
Mathematics - Analysis of PDEs
Abstract

In this article we deal with a class of geometric inverse problem for bottom detection by one single measurement on the free surface in water--waves. We found upper and lower bounds for the size of the region enclosed between two different bottoms, in terms of Neumann and/or Dirichlet data on the free surface. Starting from the general water--waves system in bounded domains with side walls, we manage to formulate the problem in terms of the Dirichlet to Neumann operator and thus, as an elliptic problem in a bounded domain with Neumann homogeneous condition on the rigid boundary. Then we study the properties of the Dirichlet to Neumann map and analyze the called method of size estimation., Comment: version 2

Published
2020
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19. Contributions to the 36th International Cosmic Ray Conference (ICRC 2019) of the JEM-EUSO Collaboration

Author

Abdellaoui, G., Abe, S., Adams Jr., J. H., Ahriche, A., Allard, D., Allen, L., Alonso, G., Anchordoqui, L., Anzalone, A., Arai, Y., Asano, K., Attallah, R., Attoui, H., Pernas, M. Ave, Bacholle, S., Bakiri, M., Baragatti, P., Barrillon, P., Bartocci, S., Bayer, J., Beldjilali, B., Belenguer, T., Belkhalfa, N., Bellotti, R., Belov, A., Belov, K., Benmessai, K., Bertaina, M., Biermann, P. L., Biktemerova, S., Bisconti, F., Blaksley, C., Blanc, N., Błęcki, J., Blin-Bondil, S., Bobik, P., Bogomilov, M., Bozzo, E., Pacheco, S. Briz, Bruno, A., Caballero, K. S., Cafagna, F., Campana, D., Capdevielle, J-N., Capel, F., Caramete, A., Caramete, L., Carlson, P., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Catalano, O., Cellino, A., Chikawa, M., Chiritoi, G., Christl, M. J., Connaughton, V., Conti, L., Cotto, G., Crawford, H. J., Cremonini, R., Creusot, A., Csorna, S., Cummings, A., Dagoret-Campagne, S., Gónzalez, A. de Castro, De Donato, C., de la Taille, C., De Santis, C., del Peral, L., Di Martino, M., Damian, A. Diaz, Djemil, T., Dutan, I., Ebersoldt, A., Ebisuzaki, T., Engel, R., Eser, J., Fenu, F., Fernández-González, S., Ferrarese, S., Flamini, M., Fornaro, C., Fouka, M., Franceschi, A., Franchini, S., Fuglesang, C., Fujii, T., Fujimoto, J., Fukushima, M., Galeotti, P., García-Ortega, E., Garipov, G., Gascón, E., Genci, J., Giraudo, G., Alvarado, C. González, Gorodetzky, P., Greg, R., Guarino, F., Guzmán, A., Hachisu, Y., Haiduc, M., Harlov, B., Haungs, A., Carretero, J. Hernández, Cruz, W. Hidber, Ikeda, D., Inoue, N., Inoue, S., Isgrò, F., Itow, Y., Jammer, T., Jeong, S., Joven, E., Judd, E. G., Jung, A., Jochum, J., Kajino, F., Kajino, T., Kalli, S., Kaneko, I., Karadzhov, Y., Karczmarczyk, J., Katahira, K., Kawai, K., Kawasaki, Y., Kedadra, A., Khales, H., Khrenov, B. A., Kim, Jeong-Sook, Kim, Soon-Wook, Kleifges, M., Klimov, P. A., Kolev, D., Krantz, H., Kreykenbohm, I., Krizmanic, J. F., Kudela, K., Kurihara, Y., Kusenko, A., Kuznetsov, E., La Barbera, A., Lahmar, H., Lakhdari, F., Larsson, O., Lee, J., Licandro, J., Campano, L. López, Martínez, F. López, Maccarone, M. C., Mackovjak, S., Mahdi, M., Maravilla, D., Marcelli, L., Marcos, J. L., Marini, A., Marszał, W., Martens, K., Martín, Y., Martinez, O., Martucci, M., Masciantonio, G., Mase, K., Matev, R., Matthews, J. N., Mebarki, N., Medina-Tanco, G., Menshikov, A., Merino, A., Meseguer, J., Meyer, S. S., Mimouni, J., Miyamoto, H., Mizumoto, Y., Monaco, A., Ríos, J. A. Morales de los, Mustafa, M., Nagataki, S., Naitamor, S., Napolitano, T., Nava, R., Neronov, A., Nomoto, K., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A. V., Orleaánski, P., Osteria, G., Pagliaro, A., Painter, W., Panasyuk, M. I., Panico, B., Parizot, E., Park, I. H., Pastircak, B., Patzak, T., Paul, T., Pérez-Grande, I., Perfetto, F., Peter, T., Picozza, P., Pindado, S., Piotrowski, L. W., Piraino, S., Placidi, L., Plebaniak, Z., Pliego, S., Pollini, A., Polonski, Z., Popescu, E. M., Prat, P., Prévôt, G., Prieto, H., Puehlhofer, G., Putis, M., Rabanal, J., Radu, A. A., Reyes, M., Rezazadeh, M., Ricci, M., Frías, M. D. Rodríguez, Ronga, F., Roudil, G., Rusinov, I., Rybczyński, M., Sabau, M. D., Cano, G. Sáaez, Sagawa, H., Sahnoune, Z., Saito, A., Sakaki, N., Salazar, H., Balanzar, J. C. Sanchez, Sánchez, J. L., Santangelo, A., Sanz-Andrés, A., Palomino, M. Sanz, Saprykin, O., Sarazin, F., Sato, M., Schanz, T., Schieler, H., Scotti, V., Selmane, S., Semikoz, D., Serra, M., Sharakin, S., Shimizu, H. M., Shinozaki, K., Shirahama, T., Spataro, B., Stan, I., Sugiyama, T., Supanitsky, D., Suzuki, M., Szabelska, B., Szabelski, J., Tajima, N., Tajima, T., Takahashi, Y., Takami, H., Takeda, M., Takizawa, Y., Talai, M. C., Tenzer, C., Thomas, S. B., Tibolla, O., Tkachev, L., Tokuno, H., Tomida, T., Tone, N., Toscano, S., Traïche, M., Tsenov, R., Tsunesada, Y., Tsuno, K., Tubbs, J., Turriziani, S., Uchihori, Y., Vaduvescu, O., Valdés-Galicia, J. F., Vallania, P., Vankova, G., Vigorito, C., Villaseñor, L., Vlcek, B., von Ballmoos, P., Vrabel, M., Wada, S., Watanabe, J., Watts Jr., J., Weber, M., Muñoz, R. Weigand, Weindl, A., Wiencke, L., Wille, M., Wilms, J., Włodarczyk, Z., Yamamoto, T., Yang, J., Yano, H., Yashin, I. V., Yonetoku, D., Yoshida, S., Young, R., Zgura, I. S, Zotov, M. Yu., and Marchi, A. Zuccaro

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Compilation of papers presented by the JEM-EUSO Collaboration at the 36th International Cosmic Ray Conference (ICRC), held July 24 through August 1, 2019 in Madison, Wisconsin., Comment: links to the 24 papers published in arXiv

Published
2019

21. Spectroscopic characterization of aluminum monofluoride with relevance to laser cooling and trapping

Author

Truppe, S., Marx, S., Kray, S., Doppelbauer, M., Hofsäss, S., Schewe, H. C., Walter, N., Pérez-Ríos, J., Sartakov, B. G., and Meijer, G.

Subjects
Physics - Atomic Physics, Physics - Chemical Physics
Abstract

Here we report on spectroscopic measurements of the aluminum monofluoride molecule (AlF) that are relevant to laser cooling and trapping experiments. We measure the detailed energy level structure of AlF in the X$^1\Sigma^+$ electronic ground state, in the A$^1\Pi$ state, and in the metastable a$^3\Pi$ state. We determine the rotational, vibrational and electronic branching ratios from the A$^1\Pi$ state. We also study how the rotational levels split and shift in external electric and magnetic fields. We find that AlF is an excellent candidate for laser cooling on any Q-line of the A$^1\Pi$ - X$^1\Sigma^+$ transition and for trapping at high densities.

Published
2019
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22. Extreme events in forced oscillatory media in 0, 1 and 2 dimensions

Author

Barland, S., Brambilla, M., Columbo, L., Garbin, B., Gibson, C. J., Giudici, M., Gustave, F., Masoller, C., Oppo, G. -L., Prati, F., Rimoldi, C., Rios, J. R., Tredicce, J. R., Tissoni, G., Walczak, P., Yao, A. M., and Zamora-Munt, J.

Subjects
Physics - Optics, Nonlinear Sciences - Pattern Formation and Solitons
Abstract

One of the open questions in the field of optical rogue waves is the relevance of the number of spatial dimensions in which waves propagate. Here we review recent results on extreme events obtained in 0, 1 and 2 spatial dimensions in the specific context of forced oscillatory media. We show that some dynamical scenarii can be relevant from 0 to 2D while others can take place only in sufficiently large number of spatial dimensions.

Published
2019
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23. First observations of speed of light tracks by a fluorescence detector looking down on the atmosphere

Author

Abdellaoui, G., Abe, S., Adams Jr., J. H., Ahriche, A., Allard, D., Allen, L., Alonso, G., Anchordoqui, L., Anzalone, A., Arai, Y., Asano, K., Attallah, R., Attoui, H., Pernas, M. Ave, Bacholle, S., Bakiri, M., Baragatti, P., Barrillon, P., Bartocci, S., Bayer, J., Beldjilali, B., Belenguer, T., Belkhalfa, N., Bellotti, R., Belov, A., Belov, K., Benmessai, K., Bertaina, M., Biermann, P. L., Biktemerova, S., Bisconti, F., Blanc, N., Błȩcki, J., Blin-Bondil, S., Bobik, P., Bogomilov, M., Bozzo, E., Bruno, A., Caballero, K. S., Cafagna, F., Campana, D., Capdevielle, J-N., Capel, F., Caramete, A., Caramete, L., Carlson, P., Caruso, R., Casolino, M., Cassardo, C., Castellina, A., Catalano, C. Catalano O., Cellino, A., Chikawa, M., Chiritoi, G., Christl, M. J., Connaughton, V., Conti, L., Cordero, G., Cotto, G., Crawford, H. J., Cremonini, R., Csorna, S., Cummings, A., Dagoret-Campagne, S., De Donato, C., de la Taille, C., De Santis, C., del Peral, L., Di Martino, M., Damian, A. Diaz, Djemil, T., Dutan, I., Ebersoldt, A., Ebisuzaki, T., Engel, R., Eser, J., Fenu, F., Fernández-González, S., Fernández-Soriano, J., Ferrarese, S., Flamini, M., Fornaro, C., Fouka, M., Franceschi, A., Franchini, S., Fuglesang, C., Fujii, T., Fujimoto, J., Fukushima, M., Galeotti, P., García-Ortega, E., Garipov, G., Gascón, E., Genci, J., Giraudo, G., Alvarado, C. González, Gorodetzky, P., Greg, R., Guarino, F., Guzmán, A., Hachisu, Y., Haiduc, M., Harlov, B., Haungs, A., Carretero, J. Hernández, Cruz, W. Hidber, Ikeda, D., Inoue, N., Inoue, S., Isgrò, F., Itow, Y., Jammer, T., Jeong, S., Joven, E., Judd, E. G., Jung, A., Jochum, J., Kajino, F., Kajino, T., Kalli, S., Kaneko, I., Karadzhov, Y., Karczmarczyk, J., Katahira, K., Kawai, K., Kawasaki, Y., Kedadra, A., Khales, H., Khrenov, B. A., Kim, Jeong-Sook, Kim, Soon-Wook, Kleifges, M., Klimov, P. A., Kolev, D., Krantz, H., Kreykenbohm, I., Kudela, K., Kurihara, Y., Kusenko, A., Kuznetsov, E., La Barbera, A., Lachaud, C., Lahmar, H., Lakhdari, F., Larson, R., Larsson, O., Lee, J., Licandro, J., Campano, L. López, Maccarone, M. C., Mackovjak, S., Mahdi, M., Maravilla, D., Marcelli, L., Marcos, J. L., Marini, A., Marszał, W., Martens, K., Martín, Y., Martinez, O., Martucci, M., Masciantonio, G., Mase, K., Mastafa, M., Matev, R., Matthews, J. N., Mebarki, N., Medina-Tanco, G., Mendoza, M. A., Menshikov, A., Merino, A., Meseguer, J., Meyer, S. S., Mimouni, J., Miyamoto, H., Mizumoto, Y., Monaco, A., Ríos, J. A. Morales de los, Nagataki, C. Moretto S., Naitamor, S., Napolitano, T., Naslund, W., Nava, R., Neronov, A., Nomoto, K., Nonaka, T., Ogawa, T., Ogio, S., Ohmori, H., Olinto, A. V., Orleański, P., Osteria, G., Pagliaro, A., Painter, W., Panasyuk, M. I., Panico, B., Pasqualino, G., Parizot, E., Park, I. H., Pastircak, B., Patzak, T., Paul, T., Pérez-Grande, I., Perfetto, F., Peter, T., Picozza, P., Pindado, S., Piotrowski, L. W., Piraino, S., Placidi, L., Plebaniak, Z., Pliego, S., Pollini, A., Polonski, Z., Popescu, E. M., Prat, P., Prévôt, G., Prieto, H., Puehlhofer, G., Putis, M., Rabanal, J., Radu, A. A., Reyes, M., Rezazadeh, M., Ricci, M., Frías, M. D. Rodríguez, Rodencal, M., Ronga, F., Roudil, G., Rusinov, I., Rybczyński, M., Sabau, M. D., Cano, G. Sáez, Sagawa, H., Sahnoune, Z., Saito, A., Sakaki, N., Salazar, H., Balanzar, J. C. Sanchez, Sánchez, J. L., Santangelo, A., Sanz-Andrés, A., Palomino, M. Sanz, Saprykin, O., Sarazin, F., Sato, M., Schanz, T., Schieler, H., Scotti, V., Selmane, S., Semikoz, D., Serra, M., Sharakin, S., Shimizu, H. M., Shinozaki, K., Shirahama, T., Spataro, B., Stan, I., Sugiyama, T., Supanitsky, D., Suzuki, M., Szabelska, B., Szabelski, J., Tajima, N., Tajima, T., Takahashi, Y., Takami, H., Takeda, M., Takizawa, Y., Talai, M. C., Tenzer, C., Thomas, S. B., Tibolla, O., Tkachev, L., Tokuno, H., Tomida, T., Tone, N., Toscano, S., Traïche, M., Tsenov, R., Tsunesada, Y., Tsuno, K., Tubbs, J., Turriziani, S., Uchihori, Y., Vaduvescu, O., Valdés-Galicia, J. F., Vallania, P., Vankova, G., Vigorito, C., Villaseñor, L., Vlcek, B., von Ballmoos, P., Vrabel, M., Wada, S., Watanabe, J., Watts Jr., J., Weber, M., Muñoz, R. Weigand, Weindl, A., Wiencke, L., Wille, M., Wilms, J., Włodarczyk, Z., Yamamoto, T., Yang, J., Yano, H., Yashin, I. V., Yonetoku, D., Yoshida, S., Young, R., Zgura, I. S, Zotov, M. Yu., and Marchi, A. Zuccaro

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

EUSO-Balloon is a pathfinder mission for the Extreme Universe Space Observatory onboard the Japanese Experiment Module (JEM-EUSO). It was launched on the moonless night of the 25$^{th}$ of August 2014 from Timmins, Canada. The flight ended successfully after maintaining the target altitude of 38 km for five hours. One part of the mission was a 2.5 hour underflight using a helicopter equipped with three UV light sources (LED, xenon flasher and laser) to perform an inflight calibration and examine the detectors capability to measure tracks moving at the speed of light. We describe the helicopter laser system and details of the underflight as well as how the laser tracks were recorded and found in the data. These are the first recorded laser tracks measured from a fluorescence detector looking down on the atmosphere. Finally, we present a first reconstruction of the direction of the laser tracks relative to the detector., Comment: 18 pages, 14 figures

Published
2018
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29. Lifetimes of ultralong-range strontium Rydberg molecules in a dense BEC

Author

Whalen, J. D., Camargo, F., Ding, R., Killian, T. C., Dunning, F. B., Pérez-Ríos, J., Yoshida, S., and Burgdörfer, J.

Subjects
Physics - Atomic Physics, Condensed Matter - Quantum Gases
Abstract

The lifetimes and decay channels of ultralong-range Rydberg molecules created in a dense BEC are examined by monitoring the time evolution of the Rydberg population using field ionization. Studies of molecules with values of principal quantum number, $n$, in the range $n=49$ to $n=72$ that contain tens to hundreds of ground state atoms within the Rydberg electron orbit show that their presence leads to marked changes in the field ionization characteristics. The Rydberg molecules have lifetimes of $\sim1-5\,\mu$s, their destruction being attributed to two main processes: formation of Sr$^+_2$ ions through associative ionization, and dissociation induced through $L$-changing collisions. The observed loss rates are consistent with a reaction model that emphasizes the interaction between the Rydberg core ion and its nearest neighbor ground-state atom. The measured lifetimes place strict limits on the time scales over which studies involving Rydberg species in cold, dense atomic gases can be undertaken and limit the coherence times for such measurements., Comment: 9 pages, 8 figures

Published
2017
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30. Ultracold Molecule Assembly with Photonic Crystals

Author

Pérez-Ríos, J., Kim, May E., and Hung, Chen-Lung

Subjects
Physics - Atomic Physics, Condensed Matter - Quantum Gases, Physics - Chemical Physics, Quantum Physics
Abstract

Photoassociation (PA) is a powerful technique to synthesize molecules directly and continuously from cold and ultracold atoms into deeply bound molecular states. In freespace, however, PA efficiency is constrained by the number of spontaneous decay channels linking the initial excited molecular state to a sea of final (meta)stable rovibronic levels. Here, we propose a novel scheme based on molecules strongly coupled to a guided photonic mode in a photonic crystal waveguide that turns PA into a powerful tool for near deterministic formation of ultracold molecules in their ground rovibrational level. Our example shows a potential ground state molecule production efficiency $> 90\%$, and a saturation rate $>10^6$ molecules per second. By combining state-of-the-art cold atomic and molecular physics with nanophotonic engineering, our scheme presents a novel experimental package for trapping, cooling, and optical manipulation of ultracold molecules, opening up new possibilities in the direction of ultracold chemistry and quantum information.

Published
2017
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31. Universal few-body physics and cluster formation

Author

Greene, Chris H., Giannakeas, P., and Perez-Rios, J.

Subjects
Condensed Matter - Quantum Gases, Nuclear Theory, Physics - Atomic and Molecular Clusters, Physics - Atomic Physics
Abstract

A recent rejuvenation of experimental and theoretical interest in the physics of few- body systems has provided deep, fundamental insights into a broad range of problems. Few-body physics is a cross-cutting discipline not restricted to conventional subject ar- eas such as nuclear physics or atomic or molecular physics. To a large degree, the recent explosion of interest in this subject has been sparked by dramatic enhancements of experimental capabilities in ultracold atomic systems over the past decade, which now permit atoms and molecules to be explored deep in the quantum mechanical limit with controllable two-body interactions. This control, typically enabled by magnetic or electromagnetically-dressed Fano-Feshbach resonances, allows in particular access to the range of universal few-body physics, where two-body scattering lengths far exceed all other length scales in the problem. The Efimov effect, where 3 particles experienc- ing short-range interactions can counterintuitively exhibit an infinite number of bound or quasi-bound energy levels, is the most famous example of universality. Tremendous progress in the field of universal Efimov physics has taken off, driven particularly by a combination of experimental and theoretical studies in the past decade, and prior to the first observation in 2006, by an extensive set of theoretical studies dating back to 1970. Because experimental observations of Efimov physics have usually relied on resonances or interference phenomena in three-body recombination, this connects naturally with the processes of molecule formation in a low temperature gas of atoms or nucleons, and more generally with N-body recombination processes. Some other topics not closely related to the Efimov effect are also reviewed in this article, including ..., Comment: review article

Published
2017
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32. Optimal control approach for moving bottom detection in one‐dimensional shallow waters by surface measurements.

Author

Lecaros, R., López‐Ríos, J., Montecinos, G. I., and Zuazua, E.

Subjects
*FINITE volume method, *COMPUTATIONAL physics, *WATER depth, *WATER waves, *FREE surfaces
Abstract

We consider the Boussinesq‐Peregrine (BP) system as described by Lannes [Lannes, D. (2013). The water waves problem: mathematical analysis and asymptotics (Vol. 188). American Mathematical Soc.], within the shallow water regime, and study the inverse problem of determining the time and space variations of the channel bottom profile, from measurements of the wave profile and its velocity on the free surface. A well‐posedness result within a Sobolev framework for (BP), considering a time dependent bottom, is presented. Then, the inverse problem is reformulated as a nonlinear PDE‐constrained optimization one. An existence result of the minimum, under constraints on the admissible set of bottoms, is presented. Moreover, an implementation of the gradient descent approach, via the adjoint method, is considered. For solving numerically both, the forward (BP) and its adjoint system, we derive a universal and low‐dissipation scheme, which contains non‐conservative products. The scheme is based on the FORCE‐ α$$ \alpha $$ method proposed in [Toro, E. F., Saggiorato, B., Tokareva, S., and Hidalgo, A. (2020). Low‐dissipation centred schemes for hyperbolic equations in conservative and non‐conservative form. Journal of Computational Physics, 416, 109545]. Finally, we implement this methodology to recover three different bottom profiles; a smooth bottom, a discontinuous one, and a continuous profile with a large gradient. We compare with two classical discretizations for (BP) and the adjoint system. These results corroborate the effectiveness of the proposed methodology to recover bottom profiles. [ABSTRACT FROM AUTHOR]

Published
2024
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33. Repeated Structural Reworking in the Basement of the Central Colombian Andes Unraveled by a Multi‐Chronometric Approach.

Author

Zapata, S., Cardona, A., Jaramillo‐Ríos, J. S., Siachoque, A., Peverelli, V., Chew, D., Wemmer, K., Rodríguez, M. C., Valencia‐Gomez, J. C., Sobel, E. R., Calderon‐Diaz, L. C., Valencia, V. A., Patiño, A. M., Parra, M., Botello, G. E., and Glodny, J.

Subjects
BASEMENTS, DEFORMATIONS (Mechanics), CARTOGRAPHY, ZIRCON, APATITE
Abstract

Long‐lived orogens are often characterized by basement blocks affected by polyphase thick‐skinned deformation. Deciphering these events is challenging due to the heterogeneous and complex structural histories resulting from the superposition of multiple deformation phases. For instance, the Central Cordillera of Colombia was shaped by multiple tectonic phases during the Mesozoic and Cenozoic, which have been poorly constrained in both space and time. To unravel the deformation history of this mountain belt, we conducted field mapping and applied a multi‐chronometric approach that included zircon and apatite U‐Pb dating of the igneous basement, epidote and titanite U‐Pb dating of structurally controlled mineralization events, K‐Ar dating of fault rock illite, and fission track and (U‐Th‐Sm)/He bedrock thermochronology of apatite and zircon. The results reveal six deformation events along two fault systems during the past 184 Myr. This deformation history started in the Jurassic with structurally controlled magmatism and ductile deformation; followed by brittle‐ductile and fluid‐assisted basin subsidence and inversion during the Cretaceous. Finally, the Cenozoic was characterized by brittle strike‐slip and compressional deformation. Our findings show the basement response to polyphase reworking, highlighting the prominent role of ancient upper‐plate discontinuities, magmatism, and fluids. Key Points: Polyphase extensional, compressional, and strike‐slip deformation in the Northern Andes Central CordilleraA geo‐ and thermochronological approach unravels the detailed deformation history of the Northern AndesRelations between exhumation, hydrothermal activity, and rock metamorphism during basement reworking [ABSTRACT FROM AUTHOR]

Published
2024
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36. Comparative Analysis of the Efficiency of a Classic MPPT System with Location of Sensors at the Output of the Converter, Compared to the Traditional Approach of Measurements at the Output of the Generator

Author

Ríos, J., Enrique, J. M., Vivas, F. J., Andújar, J. M., Monteiro, Jânio, editor, João Silva, António, editor, Mortal, António, editor, Aníbal, Jaime, editor, Moreira da Silva, Manuela, editor, Oliveira, Miguel, editor, and Sousa, Nelson, editor

Published
2020
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38. Outcome of treatment of MDR-TB or drug-resistant patients treated with bedaquiline and delamanid: Results from a large global cohort

Author

Koirala, S., Borisov, S., Danila, E., Mariandyshev, A., Shrestha, B., Lukhele, N., Dalcolmo, M., Shakya, S.R., Miliauskas, S., Kuksa, L., Manga, S., Aleksa, A., Denholm, J.T., Khadka, H.B., Skrahina, A., Diktanas, S., Ferrarese, M., Bruchfeld, J., Koleva, A., Piubello, A., Koirala, G.S., Udwadia, Z.F., Palmero, D.J., Munoz-Torrico, M., GC, R., Gualano, G., Grecu, V.I., Motta, I., Papavasileiou, A., Li, Y., Hoefsloot, W., Kunst, H., Mazza-Stalder, J., Payen, M.-C., Akkerman, O.W., Bernal, E., Manfrin, V., Matteelli, A., Mustafa Hamdan, H., Nieto Marcos, M., Cadiñanos Loidi, J., Cebrian Gallardo, J.J., Duarte, R., Escobar Salinas, N., Gomez Rosso, R., Laniado-Laborín, R., Martínez Robles, E., Quirós Fernandez, S., Rendon, A., Solovic, I., Tadolini, M., Viggiani, P., Belilovski, E., Boeree, M.J., Cai, Q., Davidavičienė, E., Forsman, L.D., De Los Rios, J., Drakšienė, J., Duga, A., Elamin, S.E., Filippov, A., Garcia, A., Gaudiesiute, I., Gavazova, B., Gayoso, R., Gruslys, V., Jonsson, J., Khimova, E., Madonsela, G., Magis-Escurra, C., Marchese, V., Matei, M., Moschos, C., Nakčerienė, B., Nicod, L., Palmieri, F., Pontarelli, A., Šmite, A., Souleymane, M.B., Vescovo, M., Zablockis, R., Zhurkin, D., Alffenaar, J.-W., Caminero, J.A., Codecasa, L.R., García-García, J.-M., Esposito, S., Saderi, L., Spanevello, A., Visca, D., Tiberi, S., Pontali, E., Centis, R., D'Ambrosio, L., van den Boom, M., Sotgiu, G., and Migliori, G.B.

Published
2021
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41. Design of the Front End Electronics for the Infrared Camera of JEM-EUSO, and manufacturing and verification of the prototype model

Author

Maroto, Oscar, Díez-Merino, Laura, Carbonell, Jordi, Tomàs, Albert, Reyes, Marcos, Joven, Enrique, Martín, Yolanda, Ríos, J. A. Morales de los, Del Peral, Luis, and Frías, M. D. Rodríguez

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Physics - Instrumentation and Detectors
Abstract

The Japanese Experiment Module (JEM) Extreme Universe Space Observatory (EUSO) will be launched and attached to the Japanese module of the International Space Station (ISS). Its aim is to observe UV photon tracks produced by ultra-high energy cosmic rays developing in the atmosphere and producing extensive air showers. The key element of the instrument is a very wide-field, very fast, large-lense telescope that can detect extreme energy particles with energy above $10^{19}$ eV. The Atmospheric Monitoring System (AMS), comprising, among others, the Infrared Camera (IRCAM), which is the Spanish contribution, plays a fundamental role in the understanding of the atmospheric conditions in the Field of View (FoV) of the telescope. It is used to detect the temperature of clouds and to obtain the cloud coverage and cloud top altitude during the observation period of the JEM-EUSO main instrument. SENER is responsible for the preliminary design of the Front End Electronics (FEE) of the Infrared Camera, based on an uncooled microbolometer, and the manufacturing and verification of the prototype model. This paper describes the flight design drivers and key factors to achieve the target features, namely, detector biasing with electrical noise better than $100 \mu$V from $1$ Hz to $10$ MHz, temperature control of the microbolometer, from $10^{\circ}$C to $40^{\circ}$C with stability better than $10$ mK over $4.8$ hours, low noise high bandwidth amplifier adaptation of the microbolometer output to differential input before analog to digital conversion, housekeeping generation, microbolometer control, and image accumulation for noise reduction.

Published
2015

42. Thin and thick cloud top height retrieval algorithm with the Infrared Camera and LIDAR of the JEM-EUSO Space Mission

Author

Sáez-Cano, G., Ríos, J. A. Morales de los, del Peral, L., Neronov, A., Wada, S., and Frías, M. D. Rodríguez

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - High Energy Astrophysical Phenomena
Abstract

The origin of cosmic rays have remained a mistery for more than a century. JEM-EUSO is a pioneer space-based telescope that will be located at the International Space Station (ISS) and its aim is to detect Ultra High Energy Cosmic Rays (UHECR) and Extremely High Energy Cosmic Rays (EHECR) by observing the atmosphere. Unlike ground-based telescopes, JEM-EUSO will observe from upwards, and therefore, for a properly UHECR reconstruction under cloudy conditions, a key element of JEM-EUSO is an Atmospheric Monitoring System (AMS). This AMS consists of a space qualified bi-spectral Infrared Camera, that will provide the cloud coverage and cloud top height in the JEM-EUSO Field of View (FoV) and a LIDAR, that will measure the atmospheric optical depth in the direction it has been shot. In this paper we will explain the effects of clouds for the determination of the UHECR arrival direction. Moreover, since the cloud top height retrieval is crucial to analyze the UHECR and EHECR events under cloudy conditions, the retrieval algorithm that fulfills the technical requierements of the Infrared Camera of JEM-EUSO to reconstruct the cloud top height is presently reported., Comment: 5 pages, 6 figures, Atmohead Conference 2014

Published
2015
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45. “Informativo matinal para ahorrar tiempo”. Un noticiario alternativo con fandom propio.

Author

Cano-Orón, L. and Gamir-Ríos, J.

Subjects
*SOCIAL networks, *TELEVISION broadcasting of news, *FANS (Persons), *COMEDIANS, *NARRATIVES
Abstract

Comedian Ángel Martín edits and presents the Informativo matinal para ahorrar tiempo (IMPAT), a daily two-minute audiovisual newscast distributed on major social networks, with a daily audience of around one million views. This format has generated a community of followers who expand its original content by creating mimetic sector-specific news programs. This study analyzes the thematic agenda and stylistic features of the IMPAT, as well as the news programs developed by its followers. The results show a predominance of soft news and non-news content, as well as the presence of narrative traits characteristic of infotainment. The followers expand the IMPAT by creating their own news programs, also focused on soft news and with similar styles. Thus, IMPAT stands out as an alternative newscast around which a unique informational fandom has been consolidated, with content generated by its users as news prodesigners. [ABSTRACT FROM AUTHOR]

Published
2024
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46. An Automatic Brain Tumor Segmentation Approach Based on Affinity Clustering

Author

Ramirez, C., Gomez, V., De la Pava, I., Alvarez, A., Echeverry, J., Rios, J., Orozco, A., Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Vera-Rodriguez, Ruben, editor, Fierrez, Julian, editor, and Morales, Aythami, editor

Published
2019
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