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8,529 results on '"Lopez, A. D."'

1. An Optimal Linear Fusion Estimation Algorithm of Reduced Dimension for T-Proper Systems with Multiple Packet Dropouts

Author

Fernández-Alcalá, Rosa M., Jiménez-López, José D., Bihan, Nicolas Le, and Took, Clive Cheong

Subjects
Mathematics - Statistics Theory
Abstract

This paper analyses the centralized fusion linear estimation problem in multi-sensor systems with multiple packet dropouts and correlated noises. Packet dropouts are modeled by independent Bernoulli distributed random variables. This problem is addressed in the tessarine domain under conditions of T1 and T2-properness, which entails a reduction in the dimension of the problem and, consequently, computational savings. The methodology proposed enables us to provide an optimal (in the least-mean-squares sense) linear fusion filtering algorithm for estimating the tessarine state with a lower computational cost than the conventional one devised in the real field. Simulation results illustrate the performance and advantages of the solution proposed in different settings.

Published
2024
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2. Faraday shield dissipation in the drivers of SPIDER based on electromagnetic 3D calculations

Author

López-Bruna, D., Denizeau, S., Predebon, I., La Rosa, A., Poggi, C., and Agostinetti, P.

Subjects
Physics - Plasma Physics
Abstract

SPIDER (Source for the Production of Ions of Deuterium Extracted from Rf plasma) is a full-scale prototype of the ITER NBI source. It is based on the concept of inductive coupling between radio-frequency current drive and plasma. Present three-dimensional (3D) electromagnetic calculations of stationary RF fields in SPIDER permit an evaluation of the power dissipation in its main constituents. Taking experimental plasma parameters as input, we concentrate on the power dissipation in the copper-made Faraday shield lateral wall (FSLW) of the source for discharges with and without a static magnetic filter field. In agreement with our previous results and a first comparison with calorimetry data from the FSLW cooling circuit, the FSLW cylinder alone absorbs around 50\% of the available power for the studied plasma parameters. A hypothesized improvement of transport confinement may increase significantly the efficiency., Comment: 14 pages, 8 figures

Published
2024

3. Surviving in the Hot Neptune Desert: The Discovery of the Ultra-Hot Neptune TOI-3261b

Author

Nabbie, Emma, Huang, Chelsea X., Burt, Jennifer A., Armstrong, David J., Mamajek, Eric E., Adibekyan, Vardan, Sousa, Sérgio G., Lopez, Eric D., Thorngren, Daniel P., Fernández, Jorge, Li, Gongjie, Jenkins, James S., Vines, Jose I., da Silva, João Gomes, Wittenmyer, Robert A., Bayliss, Daniel, Briceño, César, Collins, Karen A., Dumusque, Xavier, Horne, Keith D., Keniger, Marcelo F., Law, Nicholas, Lillo-Box, Jorge, Liu, Shang-Fei, Mann, Andrew W., Nielsen, Louise Dyregaard, Osborn, Ares, Relles, Howard M., Rodrigues, José J., Bell, Juan, Srdoc, Gregor, Stockdale, Chris, Strøm, Paul A., Gardner-Watkins, Cristilyn N., Wheatley, Peter J., Wright, Duncan J., Zhou, George, Ziegler, Carl, Ricker, George R., Seager, Sara, Vanderspek, Roland, Winn, Joshua W., Jenkins, Jon M., Fausnaugh, Michael, Kunimoto, Michelle, Osborn, Hugh P., Quinn, Samuel N., and Wohler, Bill

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

The recent discoveries of Neptune-sized ultra-short period planets (USPs) challenge existing planet formation theories. It is unclear whether these residents of the Hot Neptune Desert have similar origins to smaller, rocky USPs, or if this discrete population is evidence of a different formation pathway altogether. We report the discovery of TOI-3261b, an ultra-hot Neptune with an orbital period $P$ = 0.88 days. The host star is a $V = 13.2$ magnitude, slightly super-solar metallicity ([Fe/H] $\simeq$ 0.15), inactive K1.5 main sequence star at $d = 300$ pc. Using data from the Transiting Exoplanet Survey Satellite and the Las Cumbres Observatory Global Telescope, we find that TOI-3261b has a radius of $3.82_{-0.35}^{+0.42}$ $R_{\oplus}$. Moreover, radial velocities from ESPRESSO and HARPS reveal a mass of $30.3_{-2.4}^{+2.2}$ $M_{\oplus}$, more than twice the median mass of Neptune-sized planets on longer orbits. We investigate multiple mechanisms of mass loss that can reproduce the current-day properties of TOI-3261b, simulating the evolution of the planet via tidal stripping and photoevaporation. Thermal evolution models suggest that TOI-3261b should retain an envelope potentially enriched with volatiles constituting $\sim$5% of its total mass. This is the second highest envelope mass fraction among ultra-hot Neptunes discovered to date, making TOI-3261b an ideal candidate for atmospheric follow-up observations., Comment: 20 pages, 11 figures, accepted to AJ

Published
2024

4. Preliminary mapping of ionospheric total electron content (TEC) over Ecuador using global positioning system (GPS) data

Author

Lopez, Ericson D., Ubillus, Bryan A., and Meza, Ariel A.

Subjects
Physics - Space Physics
Abstract

The ionosphere affects radio signals by altering their speed, direction, and trajectory, causing a temporary delay known as ionospheric delay, which is directly related to the total electron content (TEC). Although research in other equatorial locations has explored TEC implications, qualitative research is required to predict its behavior in the ionosphere. This study aims to depict TEC intensity evolution through color maps using data from 14 GPS receivers placed across Ecuador. For this purpose, pseudorange observables collected from the stations were used to present a calculation method for the TEC and its evolution during January 2022. The results revealed an oscillatory behavior in the evolution of the TEC, with intensity peaks that, on some occasions, approach and even exceed 100 T ECU (TEC units), while its local minimums never reach zero values.

Published
2024

5. Unveiling the origins of galactic bars: insights from barred and unbarred galaxies

Author

López, Paula D., Scannapieco, Cecilia, Cora, Sofía A., and Gargiulo, Ignacio D.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

A significant fraction of local galaxies exhibit stellar bars, non-axisymmetric structures composed of stars, gas, and dust. Identifying key differences between the properties of barred and unbarred galaxies can uncover clues about the conditions for triggering bar formation. We explore the early stages of bar formation in a small sample of disc barred galaxies extracted from the TNG50 cosmological simulation, and compare their properties to those of unbarred galaxies. According to our results, the most important difference between barred and unbarred galaxies is that the former have systematically higher fractions of stellar to dark matter mass in their inner regions, from very early stages and prior to the formation of the bars. They harbour high initial gas content, fostering increased star formation rates and leading to a central mass concentration that grows faster over time compared to unbarred galaxies. Examining the evolution of the halo spin within 10 ckpc reveals that barred galaxies have higher angular momentum transfer from the disc to the halo. Curiously, both barred and unbarred galaxies share similar initial low values of the halo spin, consistent with those proposed in the literature for bar formation. Furthermore, we evaluate existing stability criteria to capture the complexity of the process, and investigate the effects of mergers, flybys, and environment as possible drivers of bar formation. We find no clear link between mergers and disc instabilities resulting in the formation of bars, even though some of the simulated barred galaxies might have been influenced by these events., Comment: 20 pages, 20 figures, 2 tables

Published
2024
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9. A growth diagram for plasma-assisted molecular beam epitaxy of GaN nanocolumns on Si(111)

Author

Fernández-Garrido, S., Grandal, J., Calleja, E., Sánchez-García, M. A., and López-Romero, D.

Subjects
Condensed Matter - Materials Science, Physics - Applied Physics
Abstract

The morphology of GaN samples grown by plasma-assisted molecular beam epitaxy on Si(111) was systematically studied as a function of impinging Ga/N flux ratio and growth temperature (750-850{\deg}C).Two different growth regimes were identified: compact and nanocolumnar. A growth diagram was established as a function of growth parameters, exhibiting the transition between growth regimes, and showing under which growth conditions GaN cannot be grown due to thermal decomposition and Ga desorption. Present results indicate that adatoms diffusion length and the actual Ga/N ratio on the growing surface are key factors to achieve nanocolumnar growth., Comment: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in (citation of published article) and may be found at J. Appl. Phys. 106, 126102 (2009) and may be found at https://doi.org/10.1063/1.3267151

Published
2024
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10. Time-dependent theory of reconstruction of attosecond harmonic beating by interference of multi-photon transitions

Author

López, Sebastián D., Ocello, Matias L., and Arbó, Diego G.

Subjects
Physics - Atomic Physics
Abstract

Phase and time delays of atomic above-threshold ionization are usually experimentally explored by the reconstruction of attosecond harmonic beating by interference of two-photon transitions (RABBIT) technique. Theoretical studies of RABBIT rely on the perturbative treatment of the probe (NIR or visible) laser pulse with respect to the atomic electric field and the pump composed of a train of attosecond pulses made of several harmonics with frequencies multiple of the probe fundamental frequency. In this work we present a semiclassical non-perturbative description of the phase delays for the emission of electrons from hydrogen atoms based on the strong-field approximation as the relative phase between pump and probe pulses is varied, where more than two photons are involved. Ionization times are calculated within the saddle-point approximations and serve to individualize the different electron wave packets that produce the RABBIT interferometric scheme. We observe different behaviors of the phase delays at different intensities of the probe. For example, for moderate and intense probe fields, the harmonics and sidebands happen to be in phase ($ \gtrsim 4 \times 10^{11}$ W/cm$^2$). In turn, when the probe field is sufficiently weak, we recover the well-known rule of thumb for the phase delays developed within the perturbative RABBIT theory [see D. Guenot et al. Phys. Rev. A 85, 053424 (2012)]. We show that the intracycle interference of the different paths contributing to the final energy (sideband or high harmonic) is responsible for the different behaviors of the interference pattern. Comparisons with the numerical solution of the strong-field approximation and time-dependent Schr\"odinger equation confirm the reliability of our semiclassical non-perturbative theory., Comment: 42 pages, 12 figures, to be sent for peer reviewed publishing

Published
2024

11. Searches for neutrinos in the direction of radio-bright blazars with the ANTARES telescope

Author

ANTARES Collaboration, Albert, A., Alves, S., André, M., Ardid, M., Ardid, S., Aubert, J. J., Aublin, J, Baret, B., Basa, S., Becherini, Y., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Campion, S., Capone, A., Caramete, L., Carenini, F., Carr, J., Carretero, V., Celli, S., Cerisy, L., Chabab, M., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coelho, J. A. B., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Cruz, A. S. M., Díaz, A. F., De Martino, B., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Hedri, S. El, Khayati, N. El, Enzenhöfer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gagliardini, S., García, J., Oliver, C. Gatius, Gay, P., Geißelbrecht, N., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Haegel, L., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Kouchner, A., Kovalev, Y. A, Kovalev, Y. Y, Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamoureux, M., Lazo, A., Lefèvre, D., Leonora, E., Levi, G., Stum, S. Le, Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Migliozzi, P., Moussa, A., Muller, R., Navas, S., Nezri, E., Fearraigh, B. Ó, Oukacha, E., Păun, A., Păvălaş, G. E., Peña-Martínez, S., Perrin-Terrin, M., Pestel, V., Piattelli, P., Plavin, A., Poirè, C., Popa, V., Pradier, T., Pushkarev, A., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Saina, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Troitsky, S., Vallage, B., Vannoye, G., Van Elewyck, V., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., Zúñiga, J., Collaboration, OVRO, Hovatta, T., Kiehlmann, S., Liodakis, I., Pavlidou, V., and Readhead, A. C. S

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Active galaxies, especially blazars, are among the most promising neutrino source candidates. To date, ANTARES searches for these objects considered GeV-TeV $\gamma$-ray bright blazars. Here, a statistically complete radio-bright blazar sample is used as the target for searches of origins of neutrinos collected by the ANTARES neutrino telescope over 13 years of operation. The hypothesis of a neutrino-blazar directional correlation is tested by pair counting and by a complementary likelihood-based approach. The resulting post-trial $p$-value is $3.0\%$ ($2.2\sigma$ in the two-sided convention), possibly indicating a correlation. Additionally, a time-dependent analysis is performed to search for temporal clustering of neutrino candidates as a mean of detecting neutrino flares in blazars. None of the investigated sources alone reaches a significant flare detection level. However, the presence of 18 sources with a pre-trial significance above $3\sigma$ indicates a $p=1.4\%$ ($2.5\sigma$ in the two-sided convention) detection of a time-variable neutrino flux. An \textit{a posteriori} investigation reveals an intriguing temporal coincidence of neutrino, radio, and $\gamma$-ray flares of the J0242+1101 blazar at a $p=0.5\%$ ($2.9\sigma$ in the two-sided convention) level. Altogether, the results presented here suggest a possible connection of neutrino candidates detected by the ANTARES telescope with radio-bright blazars.

Published
2023
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12. An Eclipsing 47 minute Double White Dwarf Binary at 400 pc

Author

Munday, James, Tremblay, P. -E., Hermes, J. J., Barlow, Brad, Pelisoli, Ingrid, Marsh, T. R., Parsons, Steven G., Jones, David, Kepler, S. O., Brown, Alex, Littlefair, S. P., Hegedus, R., Baran, Andrzej, Breedt, Elmé, Dhillon, V. S., Dyer, Martin J., Green, Matthew J., Kennedy, Mark R., Kerry, Paul, Lopez, Isaac D., Romero, Alejandra D., Sahman, Dave, and Worters, Hannah L.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We present the discovery of the eclipsing double white dwarf (WD) binary WDJ 022558.21-692025.38 that has an orbital period of 47.19 min. Following identification with the Transiting Exoplanet Survey Satellite, we obtained time-series ground based spectroscopy and high-speed multi-band ULTRACAM photometry which indicate a primary DA WD of mass 0.40 +- 0.04 Msol and a 0.28 +- 0.02 Msol mass secondary WD, which is likely of type DA as well. The system becomes the third-closest eclipsing double WD binary discovered with a distance of approximately 400 pc and will be a detectable source for upcoming gravitational wave detectors in the mHz frequency range. Its orbital decay will be measurable photometrically within 10 yrs to a precision of better than 1%. The fate of the binary is to merge in approximately 41 Myr, likely forming a single, more massive WD., Comment: Accepted for publication in MNRAS, 8 pages + 2 appendix pages, 6 figures

Published
2023
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13. Energy efficient cell-free massive MIMO on 5G deployments: sleep modes strategies and user stream management

Author

Riera-Palou, F., Femenias, G., López-Pérez, D., Piovesan, N., and De Domenico, A.

Subjects
Computer Science - Networking and Internet Architecture, Electrical Engineering and Systems Science - Signal Processing
Abstract

This paper proposes the utilization of cell-free massive MIMO (CF-M-MIMO) processing on top of the regular micro/macrocellular deployments typically found in current 5G networks. Towards this end, it contemplates the connection of all base stations to a central processing unit (CPU) through fronthaul links, thus enabling the joint processing of all serviced user equipment (UE), yet avoiding the expensive deployment and maintenance of dozens of randomly scattered access points (APs). Moreover, it allows the implementation of centralized strategies to exploit the sleep mode capabilities of current baseband/RF hardware to (de)activate selected Base Stations (BSs) in order to maximize the network energy efficiency and to react to changes in UE behaviour and/or operator requirements. In line with current cellular network deployments, it considers the use of multiple antennas at the UE side that unavoidably introduces the need to effectively manage the number of streams to be directed to each UE in order to balance multiplexing gains and increased pilot contamination., Comment: 14 pages, 12 figures

Published
2023

17. RECORD, a high-throughput, customizable system that unveils behavioral strategies leveraged by rodents during foraging-like decision-making

Author

Ibáñez Alcalá, Raquel J., Beck, Dirk W., Salcido, Alexis A., Davila, Luis D., Giri, Atanu, Heaton, Cory N., Villarreal Rodriguez, Kryssia, Rakocevic, Lara I., Hossain, Safa B., Reyes, Neftali F., Batson, Serina A., Macias, Andrea Y., Drammis, Sabrina M., Negishi, Kenichiro, Zhang, Qingyang, Umashankar Beck, Shreeya, Vara, Paulina, Joshi, Arnav, Franco, Austin J., Hernandez Carbajal, Bianca J., Ordonez, Miguel M., Ramirez, Felix Y., Lopez, Jonathan D., Lozano, Nayeli, Ramirez, Abigail, Legaspy, Linnete, Cruz, Paulina L., Armenta, Abril A., Viel, Stephanie N., Aguirre, Jessica I., Quintanar, Odalys, Medina, Fernanda, Ordonez, Pablo M., Munoz, Alfonzo E., Martínez Gaudier, Gustavo E., Naime, Gabriela M., Powers, Rosalie E., O’Dell, Laura E., Moschak, Travis M., Goosens, Ki A., and Friedman, Alexander

Published
2024
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19. 2D electromagnetic simulations of RF heating via inductive coupling in the SPIDER device

Author

López-Bruna, D., Jain, P., Recchia, M., Zaniol, B., Sartori, E., Poggi, C., Candeloro, V., Serianni, G., and Veltri, P.

Subjects
Physics - Plasma Physics
Abstract

SPIDER is the prototype ion source of MITICA, the full-size neutral beam heating system conceived for the ITER tokamak. It includes eight drivers to heat and sustain the inductively coupled plasma (ICP). Owing to their near cylindrical symmetry, the coupling between the radio-frequency (RF) active currents and the source plasma is studied using a 2D electromagnetic approach with simplified expressions for the plasma electrical conductivity taken from the literature. The power absorbed by the plasma and the effect of the induced plasma currents in lowering the inductance of the driver are based on data from the dedicated S16 experimental campaign (y.~2020) of SPIDER: plasma electron densities on the order of $10^{18}$ m$^{-3}$, electron temperatures $\sim 10$ eV; neutral gas pressure $\sim 0.3$ Pa and up to $50$ kW of net power per driver. It is found that the plasma conductivity cannot be explained by the friction forces associated to local collisional processes alone. The inclusion of an effective collisionality associated to non-local processes seems also insufficient to explain the experimental information. Only when the electrical conductivity is reduced where the RF magnetic field is more intense, can the heating power and driver inductance be acceptably reproduced. We present the first 2D electromagnetic ICP calculations in SPIDER for two types of plasma, without and with the addition of a static magnetic field. The power transfer efficiency to the plasma of the first drivers of SPIDER, in view of these models, is around 50%, Comment: 33 pages, 13 figures

Published
2023

20. Lessons learned after three years of SPIDER operation and the first MITICA integrated tests

Author

Marcuzzi, D., Toigo, V., Boldrin, M., Chitarin, G., Bello, S. Dal, Grando, L., Luchetta, A., Pasqualotto, R., Pavei, M., Serianni, G., Zanotto, L., Agnello, R., Agostinetti, P., Agostini, M., Aprile, D., Barbisan, M., Battistella, M., Berton, G., Bigi, M., Brombin, M., Candela, V., Candeloro, V., Canton, A., Casagrande, R., Cavallini, C., Cavazzana, R., Cordaro, L., Cruz, N., Palma, M. Dalla, Dan, M., De Lorenzi, A., Delogu, R., De Muri, M., De Nardi, M., Denizeau, S., Fadone, M., Fellin, F., Ferro, A., Gaio, E., Gasparrini, C., Gnesotto, F., Jain, P., La Rosa, A., Lopez-Bruna, D., Lorenzini, R., Maistrello, A., Manduchi, G., Manfrin, S., Marconato, N., Mario, I., Martini, G., Milazzo, R., Patton, T., Peruzzo, S., Pilan, N., Pimazzoni, A., Poggi, C., Pomaro, N., Pouradier-Duteil, B., Recchia, M., Rigoni-Garola, A., Rizzetto, D., Rizzolo, A., Santoro, F., Sartori, E., Segalini, B., Shepherd, A., Siragusa, M., Sonato, P., Sottocornola, A., Spada, E., Spagnolo, S., Spolaore, M., Taliercio, C., Tinti, P., Tomsič, P., Trevisan, L., Ugoletti, M., Valente, M., Valisa, M., Veronese, F., Vignando, M., Zaccaria, P., Zagorski, R., Zaniol, B., Zaupa, M., Zuin, M., Cavenago, M., Boilson, D., Rotti, C., Decamps, H., Geli, F., Sharma, A., Veltri, P., Zacks, J., Simon, M., Paolucci, F., Garbuglia, A., Gutierrez, D., Masiello, A., Mico, G., Labate, C., Readman, P., Bragulat, E., Bailly-Maitre, L., Gomez, G., Kouzmenko, G., Albajar, F., Kashiwagi, M., Tobari, H., Kojima, A., Murayama, M., Hatakeyama, S., Oshita, E., Maejima, T., Shibata, N., Yamashita, Y., Watanabe, K., Singh, N. P., Singh, M. J., Dhola, H., Fantz, U., Heinemann, B., Wimmer, C., Wünderlich, D., Tsumori, K., Croci, G., Gorini, G., Muraro, A., Rebai, M., Tardocchi, M., Giacomelli, L., Rigamonti, D., Taccogna, F., Bruno, D., Rutigliano, M., Longo, S., Deambrosis, S., Miorin, E., Montagner, F., Tonti, A., and Panin, F.

Subjects
Physics - Plasma Physics, Physics - Accelerator Physics
Abstract

ITER envisages the use of two heating neutral beam injectors plus an optional one as part of the auxiliary heating and current drive system. The 16.5 MW expected neutral beam power per injector is several notches higher than worldwide existing facilities. A Neutral Beam Test Facility (NBTF) was established at Consorzio RFX, exploiting the synergy of two test beds, SPIDER and MITICA. SPIDER is dedicated to developing and characterizing large efficient negative ion sources at relevant parameters in ITER-like conditions: source and accelerator located in the same vacuum where the beam propagates, immunity to electromagnetic interferences of multiple radio-frequency (RF) antennas, avoidance of RF-induced discharges on the outside of the source. Three years of experiments on SPIDER have addressed to the necessary design modifications to enable full performances. The source is presently under a long shut-down phase to incorporate learnings from the experimental campaign. Parallelly, developments on MITICA, the full-scale prototype of the ITER NBI featuring a 1 MV accelerator and ion neutralization, are underway including manufacturing of in-vessel components, while power supplies and auxiliary plants are already under final testing and commissioning. Integration, commissioning and tests of the 1MV power supplies are essential for this first-of-kind system, unparalleled both in research and industry field. The integrated test to confirm 1MV output by combining invertor systems, DC generators and transmission lines extracted errors/accidents in some components. To realize a concrete system for ITER, solutions for the repair and the improvement of the system were developed. Hence, NBTF is emerging as a necessary facility, due to the large gap with existing injectors, effectively dedicated to identify issues and find solutions to enable successful ITER NBI operations in a time bound fashion.

Published
2023
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21. Exploring the internal rotation of the extremely low-mass He-core white dwarf GD 278 with TESS asteroseismology

Author

Calcaferro, Leila M., Córsico, Alejandro H., Althaus, Leandro G., Lopez, Isaac D., and Hermes, J. J.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

(Abridged) We present an exploration of the internal rotation of GD 278, the first pulsating extremely low-mass white dwarf that shows rotational splittings within its periodogram. We assess the theoretical frequency splittings expected for different rotation profiles and compare them to the observed frequency splittings of GD 278. To this aim, we employ an asteroseismological model representative of the pulsations of this star, obtained by using the LPCODE stellar evolution code. We also derive a rotation profile that results from detailed evolutionary calculations carried out with the MESA stellar evolution code and use it to infer the expected theoretical frequency splittings. We found that the best-fitting solution when assuming linear profiles for the rotation of GD 278 leads to values of the angular velocity at the surface and the center that are only slightly differential, and still compatible with rigid rotation. The values of the angular velocity at the surface and the center for the simple linear rotation profiles and for the rotation profile derived from evolutionary calculations are in very good agreement. Also, the resulting theoretical frequency splittings are compatible with the observed frequency splittings, in general, for both cases. The results obtained from the different approaches followed in this work to derive the internal rotation of GD 278 agree. The fact that they were obtained employing two independent stellar evolution codes gives robustness to our results. Our results suggest only a marginally differential behavior for the internal rotation in GD 278, and considering the uncertainties involved, very compatible with the rigid case, as has been observed previously for white dwarfs and pre-white dwarfs. The rotation periods derived for this star are also in line with the values determined asteroseismologically for white dwarfs and pre-white dwarfs in general., Comment: 9 pages, 6 figures. Accepted for publication in Astronomy & Astrophysics

Published
2023
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22. Search for neutrino counterparts to the gravitational wave sources from LIGO/Virgo O3 run with the ANTARES detector

Author

ANTARES Collaboration, Albert, A., Alves, S., André, M., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Becherini, Y., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Campion, S., Capone, A., Caramete, L., Carenini, F., Carr, J., Carretero, V., Celli, S., Cerisy, L., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coelho, J. A. B., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Cruz, A. S. M., Díaz, A. F., De Martino, B., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Hedri, S. El, Khayati, N. El, Enzenhöfer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gagliardini, S., García, J., Oliver, C. Gatius, Gay, P., Geißelbrecht, N., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Haegel, L., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamoureux, M., Lazo, A., Lefèvre, D., Leonora, E., Levi, G., Stum, S. Le, Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. Ó, Păun, A., Păvălaş, G. E., Perrin-Terrin, M., Pestel, V., Piattelli, P., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Saina, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Vannoye, G., Van Elewyck, V., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Since 2015 the LIGO and Virgo interferometers have detected gravitational waves from almost one hundred coalescences of compact objects (black holes and neutron stars). This article presents the results of a search performed with data from the ANTARES telescope to identify neutrino counterparts to the gravitational wave sources detected during the third LIGO/Virgo observing run and reported in the catalogues GWTC-2, GWTC-2.1, and GWTC-3. This search is sensitive to all-sky neutrinos of all flavours and of energies $>100$ GeV, thanks to the inclusion of both track-like events (mainly induced by $\nu_\mu$ charged-current interactions) and shower-like events (induced by other interaction types). Neutrinos are selected if they are detected within $\pm 500$ s from the GW merger and with a reconstructed direction compatible with its sky localisation. No significant excess is found for any of the 80 analysed GW events, and upper limits on the neutrino emission are derived. Using the information from the GW catalogues and assuming isotropic emission, upper limits on the total energy $E_{\rm tot, \nu}$ emitted as neutrinos of all flavours and on the ratio $f_\nu = E_{\rm tot, \nu}/E_{\rm GW}$ between neutrino and GW emissions are also computed. Finally, a stacked analysis of all the 72 binary black hole mergers (respectively the 7 neutron star - black hole merger candidates) has been performed to constrain the typical neutrino emission within this population, leading to the limits: $E_{\rm tot, \nu} < 4.0 \times 10^{53}$ erg and $f_\nu < 0.15$ (respectively, $E_{\rm tot, \nu} < 3.2 \times 10^{53}$ erg and $f_\nu < 0.88$) for $E^{-2}$ spectrum and isotropic emission. Other assumptions including softer spectra and non-isotropic scenarios have also been tested., Comment: 13 pages, 4 figures

Published
2023
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23. The transmission spectrum of the potentially rocky planet L 98-59 c

Author

Barclay, Thomas, Sheppard, Kyle B., Latouf, Natasha, Mandell, Avi M., Quintana, Elisa V., Gilbert, Emily A., Liuzzi, Giuliano, Villanueva, Geronimo L., Arney, Giada, Brande, Jonathan, Colón, Knicole D., Covone, Giovanni, Crossfield, Ian J. M., Damiano, Mario, Domagal-Goldman, Shawn D., Fauchez, Thomas J., Fiscale, Stefano, Gallo, Francesco, Hedges, Christina L., Hu, Renyu, Kite, Edwin S., Koll, Daniel, Kopparapu, Ravi K., Kostov, Veselin B., Kreidberg, Laura, Lopez, Eric D., Mang, James, Morley, Caroline V., Mullally, Fergal, Mullally, Susan E., Pidhorodetska, Daria, Schlieder, Joshua E., Vega, Laura D., Youngblood, Allison, and Zieba, Sebastian

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We present observations of the 1.35+/-0.07 Earth-radius planet L 98-59 c using Wide Field Camera~3 on the Hubble Space Telescope. L 98-59 is a nearby (10.6 pc), bright (H=7.4 mag), M3V star that harbors three small, transiting planets. As one of the closest known transiting multi-planet systems, L 98-59 offers one of the best opportunities to probe and compare the atmospheres of rocky planets that formed in the same stellar environment. We measured the transmission spectrum of L 98-59 c during a single transit, with the extracted spectrum showing marginal evidence for wavelength-dependent transit depth variations which would indicate the presence of an atmosphere. Forward modeling was used to constrain possible atmospheric compositions of the planet based on the shape of the transmission spectrum. Although L 98-59 is a fairly quiet star, we have seen evidence for stellar activity, and therefore we cannot rule out a scenario where the source of the signal originates with inhomogeneities on the host-star surface. While intriguing, our results are inconclusive and additional data is needed to verify any atmospheric signal. Fortunately, additional data will soon be collected from both HST and JWST. Should this result be confirmed with additional data, L 98-59 c would be the first planet smaller than 2 Earth-radii with a detected atmosphere, and among the first small planets with a known atmosphere to be studied in detail by the JWST., Comment: Submitted to AAS Journals

Published
2023

24. Hint for a TeV neutrino emission from the Galactic Ridge with ANTARES

Author

Albert, A., Alves, S., André, M., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Becherini, Y., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Campion, S., Capone, A., Caramete, L., Carenini, F., Carr, J., Carretero, V., Celli, S., Cerisy, L., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coelho, J. A. B., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Díaz, A. F., De Martino, B., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Hedri, S. El, Khayati, N. El, Enzenhöfer, A., Fasano, M., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gagliardini, S., García, J., Oliver, C. Gatius, Gay, P., Geißelbrecht, N., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Haegel, L., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamoureux, M., Lazo, A., Lefèvre, D., Leonora, E., Levi, G., Stum, S. Le, Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Neronov, A., Nezri, E., Fearraigh, B. Ó, Păun, A., Păvălaş, G. E., Perrin-Terrin, M., Pestel, V., Piattelli, P., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Saina, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Savchenko, D., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Vannoye, G., Van Elewyck, V., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Interactions of cosmic ray protons, atomic nuclei, and electrons in the interstellar medium in the inner part of the Milky Way produce a $\gamma$-ray flux from the Galactic Ridge. If the $\gamma$-ray emission is dominated by proton and nuclei interactions, a neutrino flux comparable to the $\gamma$-ray flux is expected from the same sky region. Data collected by the ANTARES neutrino telescope are used to constrain the neutrino flux from the Galactic Ridge in the 1-100 TeV energy range. Neutrino events reconstructed both as tracks and showers are considered in the analysis and the selection is optimized for the search of an excess in the region $|l| < 30\deg$, $|b| < 2\deg$. The expected background in the search region is estimated using an off-zone region with similar sky coverage. Neutrino signal originating from a power-law spectrum with spectral index ranging from $\Gamma_\nu=1$ to $4$ is simulated in both channels. The observed energy distributions are fitted to constrain the neutrino emission from the Ridge. The energy distributions in the signal region are inconsistent with the background expectation at $\sim 96\%$ confidence level. The mild excess over the background is consistent with a neutrino flux with a power law with a spectral index $2.45^{+0.22}_{-0.34}$ and a flux normalization $dN_\nu/dE_\nu = 4.0^{+2.7}_{-2.0} \times 10^{-16} \text{GeV}^{-1} \text{cm}^{-2} \text{s}^{-1} \text{sr}^{-1}$ at 40 TeV reference energy. Such flux is consistent with the expected neutrino signal if the bulk of the observed $\gamma$-ray flux from the Galactic Ridge originates from interactions of cosmic ray protons and nuclei with a power-law spectrum extending well into the PeV energy range., Comment: 8 pages, 5 figures

Published
2022
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26. Microplastics in the Marine Environment

Author

López, A. D. Forero, Colombo, C. V., De la Torre, G. E., Fernandez-Severini, M. D., Mishra, Ajay Kumar, editor, Raizada, Pankaj, editor, T. Helmy, Elsayed, editor, Arockiasamy, Santhiagu, editor, and Selvasembian, Rangabhashiyam, editor

Published
2024
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27. Microplastics and Food Safety

Author

De-la-Torre, Gabriel Enrique, Dioses-Salinas, Diana Carolina, Fernández Severini, Melisa D., Forero López, Ana D., Mishra, Ajay Kumar, editor, Raizada, Pankaj, editor, T. Helmy, Elsayed, editor, Arockiasamy, Santhiagu, editor, and Selvasembian, Rangabhashiyam, editor

Published
2024
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28. Immigration and Immigrant Policies, Health, and Health Equity in the United States

Author

LEBRÓN, ALANA MW, TORRES, IVY R, KLINE, NOLAN, LOPEZ, WILLIAM D, DE TRINIDAD YOUNG, MARIA‐ELENA, and NOVAK, NICOLE

Subjects
Health Services and Systems, Public Health, Health Sciences, Behavioral and Social Science, Basic Behavioral and Social Science, Good Health and Well Being, United States, Humans, Emigration and Immigration, Health Equity, Emigrants and Immigrants, Public Policy, Health Policy, immigration policy, immigrant policy, immigrant health, Public Health and Health Services, Demography, Health Policy & Services, Health services and systems, Public health
Abstract

Policy Points There is growing attention to the role of immigration and immigrant policies in shaping the health and well-being of immigrants of color. The early 21st century in the United States has seen several important achievements in inclusionary policies, practices, and ideologies toward immigrants, largely at subnational levels (e.g., states, counties, cities/towns). National policies or practices that are inclusionary toward immigrants are often at the discretion of the political parties in power. Early in the 21st century, the United States has implemented several exclusionary immigration and immigrant policies, contributing to record deportations and detentions and worsening inequities in the social drivers of health.

Published
2023

29. Assessing the policy utility of routine mortality statistics: a global classification of countries/Evaluer l'utilite politique des statistiques de mortalite habituelles: classification globale des pays/ Evaluar la utilidad politica de las estadisticas de mortalidad de rutina: una clasificacion mundial de paises

Author

Adair, Tim, Mikkelsen, Lene, Hooper, Jessica, Badr, Azza, and Lopez, Alan D.

Subjects
Mortality -- Statistics -- Analysis, Data entry -- Analysis -- Health aspects -- Statistics, Information management -- Analysis -- Statistics -- Health aspects, Information accessibility, Health, World Health Organization -- Statistics, United Nations -- Statistics
Abstract

Objective To evaluate the utility and quality of death registration data across countries. Methods We compiled routine death and cause of death statistics data from 2015- 2019 from national authorities. We estimated completeness of death registration using the Adair-Lopez empirical method. The quality of cause of death data was assessed by evaluating the assignment of usable causes of death among people younger than 80 years. We grouped data into nine policy utility categories based on data availability, registration completeness and diagnostic precision. Findings Of an estimated 55 million global deaths in 2019, 70% of deaths were registered across 156 countries, but only 52% had medically certified causes and 42% of deaths were assigned a usable cause. In 54 countries, which are mostly high-income, there is complete and high-quality mortality data. In a further 29 countries, located across different regions, death registration is complete, but cause of death data quality remains suboptimal. Additionally, 37 countries possess functional death registration systems with cause of death data of poor to moderate quality. In 30 countries, death registration ranges from limited to nascent completeness, accompanied by poor or unavailable cause of death data. Furthermore, 38 countries lack accessible data altogether. Conclusion By implementing more proactive death notification processes, expanding the use of digitized data collection platforms, streamlining data compilation procedures and improving data quality assessment, governments could enhance the policy utility of mortality data. Encouraging the routine application of automated verbal autopsy methods is crucial for accurately determining the causes of deaths occurring at home. Objectif Mesurer le degre d'utilite et la qualite de 1'enregistrement de la mortalite selon les pays. Methodes Nous avons compile les donnees statistiques habituelles relatives a la mortalite et aux causes de deces entre 2015 et 2019 en nous les procurant aupres des autorites nationales. Nous avons ensuite determine l'exhaustivite de l'enregistrement des deces a l'aide de la methode empirique Adair-Lopez. La qualite des donnees sur les causes de deces a ete mesuree en evaluant l'attribution des causes de deces utilisables parmi les personnes de moins de 80 ans. Enfin, nous avons regroupe les donnees en neuf categories d'utilite politique en fonction de leur disponibilite, de l'exhaustivite de l'enregistrement et de la precision diagnostique. Resultats Sur environ 55 millions de deces estimes a travers le monde en 2019, 70% d'entre eux ont ete enregistres dans 156 pays; en revanche, seuls 52% indiquaient des causes medicalement certifiees et 42% se sont vu assigner une cause utilisable. Dans 54 pays, principalement a revenu eleve, les donnees sur la mortalite sont completes et de grande qualite. Dans 29 autres pays repartis entre differentes regions, l'enregistrement des deces est complet mais la qualite des donnees concernant les causes demeure insuffisante. En outre, 37 pays possedent des systemes fonctionnels d'enregistrement des deces, avec des donnees de qualite mediocre ou moyenne en ce qui concerne les causes. Dans 30 pays, l'enregistrement des deces presente une exhaustivite limitee a rudimentaire, et va de pair avec des donnees mediocres ou indisponibles quant aux causes de deces. Par ailleurs, 38 pays manquent totalement de donnees accessibles. Conclusion En instaurant des processus plus proactifs de notification des deces, en etendant l'usage de plateformes de collecte de donnees numerisees, en simplifiant les procedures de regroupement de donnees et en ameliorant l'evaluation de la qualite de ces donnees, les gouvernements devraient pouvoir accroitre l'utilite politique des donnees de mortalite. Encourager l'application de methodes d'autopsie verbale au quotidien est crucial pour determiner avec precision les causes de deces survenus a domicile. Objetivo Evaluar la utilidad y la calidad de los datos del registro de defunciones en diferentes paises. Metodos Se recopilaron datos estadisticos de rutina sobre defunciones y causas de muerte de 2015 a 2019 de las autoridades nacionales. Se estimo la completitud del registro de defunciones mediante el metodo empirico de Adair-Lopez. La calidad de los datos de causas de muerte se evaluo mediante la evaluacion de la asignacion de causas de muerte utilizables entre las personas menores de 80 anos. Se agruparon los datos en nueve categorias de utilidad politica basadas en la disponibilidad de datos, la completitud del registro y la precision diagnostica. Resultados De los 55 millones de muertes en el mundo estimadas en 2019, el 70% de las muertes se registraron en 156 paises; pero solo el 52% tenian causas medicamente certificadas y al 42% de las muertes se les asigno una causa utilizable. En 54 paises, en su mayoria de ingresos altos, se dispone de datos de mortalidad completos y de alta calidad. En otros 29 paises, situados en diferentes regiones, el registro de defunciones es completo, pero la calidad de los datos sobre la causa de muerte sigue siendo deficiente. Asimismo, 37 paises cuentan con sistemas funcionales de registro de defunciones con datos sobre las causas de defuncion de calidad deficiente a moderada. En 30 paises, el registro de defunciones oscila entre un nivel de completitud limitado e incipiente, acompanado de datos sobre las causas de defuncion deficientes o no disponibles. Ademas, 38 paises carecen por completo de datos accesibles. Conclusion Si los gobiernos implementaran procesos de notificacion de defunciones mas proactivos, ampliaran el uso de plataformas digitalizadas de recopilacion de datos, racionalizaran los procedimientos de compilacion de datos y mejoraran la evaluacion de la calidad de los datos, podrian aumentar la utilidad politica de los datos de mortalidad. Es fundamental fomentar la aplicacion sistematica de metodos automatizados de autopsia verbal para determinar con exactitud las causas de las muertes que ocurren en el hogar., Introduction Health planning and policy evaluation requires reliable, detailed and timely mortality statistics and cause of death data. Functional civil registration and vital statistics systems ensure the continuous registration and [...]

Published
2023
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30. Global analysis of birth statistics from civil registration and vital statistics systems/Analyse mondiale des statistiques de natalite issues des systemes d'enregistrement des faits d'etat civil et de statistiques d'etat civil/Analisis global de las estadisticas de nacimientos a partir de los sistemas de registro civil y estadisticas vitales

Author

Adair, Tim, Badr, Azza, Mikkelsen, Lene, Hooper, Jessica, and Lopez, Alan D.

Subjects
Health, World Health Organization -- Statistics -- Surveys, United Nations. Children's Fund -- Statistics -- Surveys
Abstract

Objective To assess civil registration and vital statistics completeness for births in World Health Organization's Member States and identify data completeness gaps. Methods For the 194 Member States, we sourced birth registration data from the United Nations Children's Fund database of national surveys, and, where available, vital registration reports. We acquired publicly available vital statistics compiled by national authorities. We determined civil registration completeness as the percentage of living children younger than five years whose births have been reported as registered. We evaluated vital statistics completeness against the United Nations World Population Prospects' live birth estimates, and grouped countries into seven categories based on their civil registration and vital statistics completeness. Findings Globally, civil registration completeness for births was 77%, exceeding vital statistics completeness for births at 63%. Twenty countries had limited civil registration (25% to 74% completeness) and had nascent or no vital statistics data (completeness < 25%) for births. Five countries had nascent or no civil registration and vital statistics for births. Twenty countries had functional civil registration (75% to 94% completeness) but nascent or no available vital statistics. Approximately half (96) of the countries had complete civil registration and vital statistics for births, but contributed to only 22% of global births. Conclusion The gap in completeness between civil registration data and vital statistics for births is most pronounced in countries with lower civil registration completeness. Enhancing data transfer processes for birth registration, along with targeted investments to elevate registration rates, is crucial for yielding comprehensive fertility statistics for governmental planning. Objectif Evaluer le degre d'exhaustivite de I'enregistrement des faits d'etat civil et de statistiques d'etat civil pour les naissances au sein des Etats Membres de Organisation mondiale de la Sante et identifier les lacunes dans les donnees. Methodes Pour les 194 Etats Membres, nous nous sommes procure les informations relatives a l'enregistrement des naissances dans la base de donnees sur les enquetes nationales du Fonds des Nations Unies pour l'enfance et, le cas echeant, dans les rapports d'enregistrement des faits d'etat civil. Nous avons egalement recupere les statistiques d'etat civil accessibles au public et recueillies par les autorites nationales. Nous avons ensuite mesure l'exhaustivite des faits d'etat civil en calculant le pourcentage d'enfants vivants de moins de cinq ans dont la naissance a ete indiquee comme declaree. Enfin, nous avons evalue l'exhaustivite des statistiques d'etat civil en fonction des naissances vivantes estimees par les Nations Unies dans leurs Perspectives de la population mondiale, avant de classer les pays en sept categories selon leur exhaustivite en la matiere. Resultats A l'echelle mondiale, l'exhaustivite des faits d'etat civil pour les naissances s'elevait a 77%, depassant ainsi les 63% obtenus pour l'exhaustivite des statistiques d'etat civil. Dans vingt pays, l'enregistrement des faits d'etat civil etait limite (25% a 74% d'exhaustivite) et les donnees concernant les statistiques d'etat civil etaient soit rudimentaires, soit inexistantes (exhaustivite < 25%) pour les naissances. Cinq pays disposaient de systemes d'enregistrement des faits d'etat civil et de statistiques d'etat civil rudimentaires ou inexistants pour les naissances. Vingt possedaient un systeme d'enregistrement des faits d'etat civil fonctionnel (75% a 94% d'exhaustivite) mais des statistiques d'etat civil rudimentaires ou inexistantes. Et pres de la moitie (96) des pays etaient munis d'un systeme complet d'enregistrement des faits d'etat civil et de statistiques d'etat civil, mais ne representaient que 22% des naissances a travers le monde. Conclusion En ce qui concerne les naissances, les differences d'exhaustivite entre les donnees d'enregistrement des faits d'etat civil et les statistiques d'etat civil sont principalement observees dans les pays ou les donnees sur les faits d'etat civil comportent des lacunes. Afin de fournir des statistiques detaillees sur la fertilite, utiles a la planification gouvernementale, il est essentiel d'ameliorer les procedures de transfert des donnees pour l'enregistrement des naissances, mais aussi d'investir de maniere ciblee pour faire progresser les taux d'enregistrement. Objetivo Evaluar la completitud del registro civil y las estadisticas vitales de los nacimientos en los Estados Miembros de la Organizacion Mundial de la Salud e identificar lagunas en la completitud de los datos. Metodos Para los 194 Estados Miembros, se obtuvieron los datos de registro de nacimientos de la base de datos de encuestas nacionales del Fondo de las Naciones Unidas para la Infancia y, cuando estaban disponibles, de los informes de registro civil. Ademas, se obtuvieron las estadisticas vitales de acceso publico que recopilan las autoridades nacionales. Se determino la completitud del registro civil como el porcentaje de ninos vivos menores de cinco anos cuyos nacimientos se habian notificado como registrados. Se evaluo la completitud de las estadisticas vitales comparandola con las estimaciones de nacidos vivos de las Perspectivas de la Poblacion Mundial de las Naciones Unidas y se agruparon los paises en siete categorias segun la completitud del registro civil y de las estadisticas vitales. Resultados En todo el mundo, la completitud del registro civil para los nacimientos era del 77%, superando la completitud de las estadisticas vitales para los nacimientos en un 63%. Veinte paises tenian un registro civil limitado (entre un 25% y un 74% de completitud) y datos incipientes o inexistentes de estadisticas vitales (completitud Conclusion La diferencia de completitud entre los datos del registro civil y las estadisticas vitales para los nacimientos es mas evidente en los paises con un registro civil menos completo. La mejora de los procesos de transferencia de datos para el registro de nacimientos, junto con inversiones especificas para elevar las tasas de registro, es esencial para obtener estadisticas de fecundidad completas que faciliten la planificacion gubernamental., Introduction Evaluations of the performance of civil registration and vital statistics systems should emphasize both the functions of legal registration and certification of vital events, and the production of vital [...]

Published
2023
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31. Comparative performance of national civil registration and vital statistics systems: a global assessment/Performances comparatives des systemes nationaux d'enregistrement des faits d'etat civil et de statistiques d'etat civil: evaluation mondiale/Rendimiento comparativo de los sistemas nacionales de registro civil y estadisticas vitales: una evaluacion global

Author

Mikkelsen, Lene, Hooper, Jessica, Adair, Tim, Badr, Azza, and Lopez, Alan D.

Subjects
Health care reform -- Statistics -- Comparative analysis, Health, University of Melbourne -- Statistics, World Health Organization -- Statistics
Abstract

Objective To assess the current state of the world's civil registration and vital statistics systems based on publicly available data and to propose strategic development pathways, including priority interventions, for countries at different levels of civil registration and vital statistics performance. Methods We applied a performance assessment framework to publicly available data, using a composite indicator highly correlated with civil registration and vital statistics performance which we then adjusted for data incomparability and missing values. Findings Globally, civil registration and vital statistics systems score on average 0.70 (0-1 scale), with substantial variations across countries and regions. Scores ranged from less than 0.50 in emerging systems to nearly 1.00 in the most developed systems. Approximately one fifth of the world's population live in the 43 countries with low system performance (< 0.477). Irrespective of system development, health sector indicators consistently scored lower than other determinants of civil registration and vital statistics performance. Conclusion From our assessment, we provide three main recommendations for how the health sector can contribute to improving civil registration and vital statistics systems: (i) enhanced health sector engagement in birth and death notification; (ii) a more systematic approach to training cause of death diagnostics; and (iii) leadership in the implementation of verbal autopsy methods. Four different civil registration and vital statistics improvement pathways for countries at different levels of system development are proposed, that can constitute a blueprint for regional civil registration and vital statistics strengthening activities that countries can adapt and refine to suit their capabilities, resources, and particular challenges. Objective Evaluer l'etat actuel des systemes d'enregistrement des faits d'etat civil et de statistiques d'etat civil dans le monde en fonction des donnees accessibles au public et proposer des pistes de developpement strategique, notamment des interventions prioritaires, aux pays presentant differents niveaux de performance en la matiere. Methodes Nous avons applique un cadre devaluation des performances aux donnees accessibles au public, en utilisant un indicateur composite etroitement lie a l'efficacite des systemes d'enregistrement des faits d'etat civil et de statistiques d'etat civil. Nous l'avons ensuite ajuste pour tenir compte de l'incomparabilite des donnees et des valeurs manquantes. Resultats Globalement, le score des systemes d'enregistrement des faits d'etat civil et de statistiques d'etat civil s'elevent en moyenne a 0,70 (echelle 0-1), avec des variations considerables d'un pays et d'une region a l'autre. Les scores vont de moins de 0,50 dans les systemes emergents a pres de 1,00 dans les plus developpes. Environ un cinquieme de la population mondiale vit dans les 43 pays ou le systeme affiche les plus basses performances (< 0,477). Quel que soit le stade de developpement du systeme, les indicateurs du secteur de la sante ont invariablement obtenu des scores inferieurs a d'autres determinants des performances d'enregistrement des faits d'etat civil et de statistiques d'etat civil. Conclusion En nous fondant sur notre evaluation, nous formulons trois recommandations majeures pour que le secteur de la sante puisse contribuer a l'amelioration des systemes d'enregistrement des faits d'etat civil et de statistiques d'etat civil: (i) une plus grande mobilisation du secteur dans la notification des naissances et des deces; (ii) une approche plus systematique des formations au diagnostic des causes de deces; et enfin, (iii) un meilleur leadership dans la mise en reuvre de methodes d'autopsie verbale. Nous suggerons egalement quatre pistes d'amelioration differentes dans l'enregistrement des faits d'etat civil et de statistiques d'etat civil pour les pays a divers degres devolution en la matiere. Elles peuvent servir de modele aux activites de renforcement de l'enregistrement des faits d'etat civil et de statistiques d'etat civil, un modele que les pays peuvent adapter et optimiser en fonction de leurs capacites, ressources et defis specifiques. Objetivo Evaluar el estado actual de los sistemas de registro civil y estadisticas vitales a escala mundial a partir de los datos disponibles publicamente y proponer vias estrategicas de desarrollo, incluidas intervenciones prioritarias, para paises con diferentes niveles de rendimiento en materia de registro civil y estadisticas vitales. Metodos Se aplico un marco de evaluacion del rendimiento a los datos disponibles al publico, mediante un indicador compuesto altamente relacionado con el rendimiento del registro civil y las estadisticas vitales, que luego se ajusto para tener en cuenta la incomparabilidad de los datos y los valores que faltaban. Resultados A nivel mundial, los sistemas de registro civil y estadisticas vitales obtienen una puntuacion media de 0,70 (escala 0-1), con variaciones sustanciales entre paises y regiones. Las puntuaciones oscilan entre menos de 0,50 en los sistemas emergentes y casi 1,00 en los sistemas mas desarrollados. Aproximadamente una quinta parte de la poblacion mundial vive en los 43 paises con un bajo rendimiento del sistema ( Conclusion A partir de la evaluacion, se ofrecen tres recomendaciones principales sobre como puede contribuir el sector sanitario a la mejora de los sistemas de registro civil y estadisticas vitales: (i) un mayor compromiso del sector sanitario en la notificacion de nacimientos y defunciones; (ii) un enfoque mas sistematico de la formacion en el diagnostico de la causa de muerte; y (iii) liderazgo en la aplicacion de metodos de autopsia verbal. Se proponen cuatro vias diferentes de mejora del registro civil y las estadisticas vitales para paises con distintos niveles de desarrollo del sistema, que pueden constituir un anteproyecto de actividades regionales para el fortalecimiento del registro civil y las estadisticas vitales que los paises pueden adaptar y perfeccionar segun sus capacidades, recursos y desafios especificos., Introduction Fundamental to the assessment of population health is accurate and timely information on patterns and trends in human fertility and mortality. (1) Almost all countries have a method to [...]

Published
2023
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32. Removal of Hot Saturns in Mass-Radius Plane by Runaway Mass Loss

Author

Thorngren, Daniel P., Lee, Eve J., and Lopez, Eric D.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

The hot Saturn population exhibits a boundary in mass-radius space, such that no planets are observed at a density less than $\sim$0.1 g cm$^{-3}$. Yet, planet interior structure models can readily construct such objects as the natural result of radius inflation. Here, we investigate the role XUV-driven mass-loss plays in sculpting the density boundary by constructing interior structure models that include radius inflation, photoevaporative mass loss and a simple prescription of Roche lobe overflow. We demonstrate that planets puffier than $\sim$0.1 g cm$^{-3}$ experience a runaway mass loss caused by adiabatic radius expansion as the gas layer is stripped away, providing a good explanation of the observed edge in mass-radius space. The process is also visible in the radius-period and mass-period spaces, though smaller, high-bulk-metallicity planets can still survive at short periods, preserving a partial record of the population distribution at formation., Comment: 11 pages, 5 figures, Accepted to ApJ Letters. This revision includes the effect of orbital evolution resulting from Roche lobe overflow; the overall conclusions are the same

Published
2022
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33. Review of the online analyses of multi-messenger alerts and electromagnetic transient events with the ANTARES neutrino telescope

Author

Albert, A., Alves, S., André, M., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Campion, S., Capone, A., Caramete, L., Carr, J., Carretero, V., Celli, S., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coelho, J. A. B., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Díaz, A. F., De Martino, B., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Khayati, N. El, Enzenhöfer, A., Fasano, M., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gagliardini, S., García, J., Gay, P., Geißelbrecht, N., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Haegel, L., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamoureux, M., Lefèvre, D., Leonora, E., Levi, G., Stum, S. Le, Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Melis, K., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. Ó, Păun, A., Păvălaş, G. E., Pellegrino, C., Perrin-Terrin, M., Pestel, V., Piattelli, P., Pieterse, C., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Saina, A., Sánchez-Losa, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Van Elewyck, V., Versari, F., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

By constantly monitoring at least one complete hemisphere of the sky, neutrino telescopes are well designed to detect neutrinos emitted by transient astrophysical events. Real-time searches with the ANTARES telescope have been performed to look for neutrino candidates coincident with gamma-ray bursts detected by the Swift and Fermi satellites, highenergy neutrino events registered by IceCube, transient events from blazars monitored by HAWC, photon-neutrino coincidences by AMON notices and gravitational wave candidates observed by LIGO/Virgo. By requiring temporal coincidence, this approach increases the sensitivity and the significance of a potential discovery. Thanks to the good angular accuracy of neutrino candidates reconstructed with the ANTARES telescope, a coincident detection can also improve the positioning area of non-well localised triggers such as those detected by gravitational wave interferometers. This paper summarises the results of the follow-up performed by the ANTARES telescope between 01/2014 and 02/2022, which corresponds to the end of the data taking period., Comment: 21 pages, 10 figures, JCAP08 (2023) 072 (19 pp

Published
2022

34. Search for Gamma-Ray and Neutrino Coincidences Using HAWC and ANTARES Data

Author

Solares, H. A. Ayala, Coutu, S., Cowen, D., Fox, D. B., Grégoire, T., McBride, F., Mostafá, M., Murase, K., Wissel, S., Albert, A., Alves, S., André, M., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Capone, A., Caramete, L., Carr, J., Carretero, V., Celli, S., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coelho, J. A. B., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Díaz, A. F., de Wasseige, G., De Martino, B., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Khayati, N. El, Enzenhöfer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., García, J., Gay, P., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamoureux, M., Breton, R. Le, Lefèvre, D., Leonora, E., Levi, G., Stum, S. Le, Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Melis, K., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. Ó, Păaun, A., Păvălaş, G. E., Pellegrino, C., Perrin-Terrin, M., Pestel, V., Piattelli, P., Pieterse, C., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Van Elewyck, V., Versari, F., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., Zúñiga, J., Alvarez, C., Arteaga-Velázquez, J. C., Babu, R., Belmont-Moreno, E., Caballero-Mora, K. S., Capistrán, T., Carramiñana, A., Casanova, S., Cotti, U., Chaparro-Amaro, O., Cotzomi, J., de León, S. Coutiño, De la Fuente, E., de León, C., Hernandez, R. Diaz, DuVernois, M. A., Durocher, M., Díaz-Vélez, J. C., Engel, K., Espinoza, C., Fan, K. L., Alonso, M. Fernández, Fraija, N., García-González, J. A., Garfias, F., González, M. M., Goodman, J. A., Harding, J. P., Hernandez, S., Huang, D., Hueyotl-Zahuantitla, F., Hüntemeyer, P., Iriarte, A., Joshi, V., Kaufmann, S., Lara, A., Vargas, H. León, Linnemann, J. T., Longinotti, A. L., Luis-Raya, G., Malone, K., Martinez, O., Martinez-Castellanos, I., Martínez-Castro, J., Matthews, J. A., Miranda-Romagnoli, P., Morales-Soto, J. A., Moreno, E., Nayerhoda, A., Nellen, L., Nisa, M. U., Noriega-Papaqui, R., Omodei, N., Peisker, A., Araujo, Y. Pérez, Pérez-Pérez, E. G., Rho, C. D., Rosa-González, D., Ruiz-Velasco, E., Salazar, H., Greus, F. Salesa, Sandoval, A., Schneider, M., Smith, A. J., Son, Y., Springer, R. W., Tibolla, O., Tollefson, K., Torres, I., Torres-Escobedo, R., Turner, R., Ureña-Mena, F., Varela, E., Wang, X., Whitaker, K., Willox, E., Zepeda, A., and Zhou, H.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

In the quest for high-energy neutrino sources, the Astrophysical Multimessenger Observatory Network (AMON) has implemented a new search by combining data from the High Altitude Water Cherenkov (HAWC) observatory and the Astronomy with a Neutrino Telescope and Abyss environmental RESearch (ANTARES) neutrino telescope. Using the same analysis strategy as in a previous detector combination of HAWC and IceCube data, we perform a search for coincidences in HAWC and ANTARES events that are below the threshold for sending public alerts in each individual detector. Data were collected between July 2015 and February 2020 with a livetime of 4.39 years. Over this time period, 3 coincident events with an estimated false-alarm rate of $< 1$ coincidence per year were found. This number is consistent with background expectations., Comment: 12 pages, 5 figures, 3 tables

Published
2022
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36. Limits on the nuclearite flux using the ANTARES neutrino telescope

Author

ANTARES Collaboration, Albert, A., Alves, S., André, M., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Capone, A., Caramete, L., Carr, J., Carretero, V., Celli, S., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coelho, J. A. B., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Díaz, A. F., de Wasseige, G., De Martino, B., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Khayati, N. El, Enzenhöfer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., García, J., Gay, P., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Lamoureux, M., Breton, R. Le, Lefèvre, D., Leonora, E., Levi, G., Stum, S. Le, Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Melis, K., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. Ó, Păun, A., Păvălaş, G. E., Pellegrino, C., Perrin-Terrin, M., Pestel, V., Piattelli, P., Pieterse, C., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Van Elewyck, V., Versari, F., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

In this work, a search for nuclearites of strange quark matter by using nine years of ANTARES data taken in the period 2009-2017 is presented. The passage through matter of these particles is simulated %according to the model of de R\'{u}jula and Glashow taking into account a detailed description of the detector response to nuclearites and of the data acquisition conditions. A down-going flux of cosmic nuclearites with Galactic velocities ($\beta = 10^{-3}$) was considered for this study. The mass threshold for detecting these particles at the detector level is \mbox{ $4 \times 10^{13}$ GeV/c$^{2}$}. Upper limits on the nuclearite flux for masses up to $10^{17}$ GeV/c$^{2}$ at the level of $\sim 5 \times 10^{-17}$ cm$^{-2}$ s$^{-1}$ sr$^{-1}$ are obtained. These are the first upper limits on nuclearites established with a neutrino telescope and the most stringent ever set for Galactic velocities., Comment: 17 pages, 7 figures

Published
2022
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37. Semiclassical strong-field theory of phase delays in $\omega -2\omega$ above-threshold ionization

Author

Arbó, Diego G., López, Sebastián D., and Burgdörfer, Joachim

Subjects
Physics - Atomic Physics, Quantum Physics
Abstract

Phase and time delays of atomic above-threshold ionization were recently experimentally explored in an $\omega -2\omega$ setting [Zipp et al, Optica 1, 361 (2014)]. The phases of wavepackets ejected from argon by a strong $2\omega$ pulse were probed as a function of the relative phase of a weaker $\omega$ probe pulse. Numerical simulations solving the time-dependent Schr\"{o}dinger equation (TDSE) displayed a sensitive dependence of the doubly differential momentum distribution on the relative phase between the $\omega$ and $2\omega$ fields. Moreover, a surprisingly strong variation of the extracted phase delays on the intensity of the probe pulse was found. We present a semiclassical strong-field description of the phase delays in the emission of electrons in an $\omega -2\omega$ setting and apply it to atomic hydrogen. Non-perturbative effects in both the $2\omega$ pump and the $\omega$ probe field are included. The semiclassical description allows tracing phase delays to path interferences between emission during different points in time of emission within the temporal unit cell of the two-color laser field. We find good agreement between the semiclassical saddle-point approximation, the full strong field approximation (SFA), and previous results applicable in the perturbative limit of probe fields. We show that the RABBIT-like perturbative description of phase delays breaks down for stronger fields and higher-energy electron emission. In this regime, characterization of the ionization signal requires an entire ensemble of phase delays {$\delta_i(E)$} with $i=1,2,\ldots$ the difference in photon numbers of the strong $2\omega$ field involved in the interfering paths. Comparison between SFA and TDSE calculations reveals the influence of the Coulomb field even in this strong-field scenario., Comment: 32 pages, 12 figures

Published
2022
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38. Right-handed neutrinos, domain walls and tadpoles in the superstring inspired $\mu\nu$SSM

Author

Lopez-Fogliani, D. E. and Munoz, C.

Subjects
High Energy Physics - Phenomenology, High Energy Physics - Theory
Abstract

We discuss the special role of right-handed neutrinos in the $\mu\nu$SSM for solving the $\mu$- and $\nu$-problems, simultaneously avoiding the potential domain wall and tadpole problems, In particular, embedding the $\mu\nu$SSM in the framework of superstrings implies that not all gauge invariant terms are necessarily present in the superpotential, and thus there is more flexibility to allow only those that avoid the domain wall and tadpole problems to be present. These can be non-renormalizable terms of dimension 4 or terms of higher dimensions. In addition, non-perturbative effects can also solve both problems. We discuss another implication of the superstring inspired $\mu\nu$SSM, since the right-handed neutrino is expected to have extra $U(1)$ charges at high energies. In this case, the cubic right-handed neutrino terms in the superpotential, helpful for generating Majorana masses and solving domain wall and tadpole problems, can arise through a variety of stringy mechanisms., Comment: Discussions expanded, 1 table and references added. Version published in Nucl. Phys. B, 24 pages, 2 figures, 1 table

Published
2022
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40. Modulation of myeloid and T cells in vivo by Bruton's tyrosine kinase inhibitor ibrutinib in patients with metastatic pancreatic ductal adenocarcinoma.

Author

Sinha, Meenal, Betts, Courtney, Zhang, Li, Griffith, Madeline J, Solman, Isabelle, Chen, Brandon, Liu, Eric, Tamaki, Whitney, Stultz, Jacob, Marquez, Jaqueline, Sivagnanam, Shamilene, Cheung, Alexander, Pener, Denise, Fahlman, Anne, Taber, Erin, Lerner, Kimberly, Crocker, Matthew, Todd, Kendra, Rajagopalan, Brindha, Ware, Clarisha, Bridge, Mark, Vo, Johnson, Dragomanovich, Hannah, Sudduth-Klinger, Julie, Vaccaro, Gina, Lopez, Charles D, Tempero, Margaret, Coussens, Lisa M, and Fong, Lawrence

Subjects
Humans, Adenocarcinoma, Carcinoma, Pancreatic Ductal, Pancreatic Neoplasms, Antineoplastic Agents, Tumor Microenvironment, Programmed Cell Death 1 Receptor, Gemcitabine, Tyrosine Protein Kinase Inhibitors, Immunomodulation, Immunotherapy, Lymphocyte Activation, Receptors, Immunologic, Stem Cell Research, Cancer, Clinical Trials and Supportive Activities, Clinical Research, Rare Diseases, Pancreatic Cancer, Digestive Diseases, Orphan Drug, Evaluation of treatments and therapeutic interventions, 6.2 Cellular and gene therapies, 6.1 Pharmaceuticals, Good Health and Well Being, Receptors, Immunologic
Abstract

BackgroundIn preclinical studies of pancreatic ductal adenocarcinoma (PDAC), ibrutinib improved the antitumor efficacy of the standard of care chemotherapy. This led to a phase 1b clinical trial to determine the safety, tolerability, and immunologic effects of ibrutinib treatment in patients with advanced PDAC.MethodsPreviously untreated patients with PDAC were enrolled in a phase 1b clinical trial (ClinicalTrials.gov) to determine the safety, toxicity, and maximal tolerated dose of ibrutinib when administered with the standard regimen of gemcitabine and nab-paclitaxel. To study the immune response to ibrutinib alone, the trial included an immune response arm where patients were administered with ibrutinib daily for a week followed by ibrutinib combined with gemcitabine and nab-paclitaxel. Endoscopic ultrasonography-guided primary PDAC tumor biopsies and blood were collected before and after ibrutinib monotherapy. Changes in abundance and functional state of immune cells in the blood was evaluated by mass cytometry by time of flight and statistical scaffold analysis, while that in the local tumor microenvironment (TME) were assessed by multiplex immunohistochemistry. Changes in B-cell receptor and T-cell receptor repertoire were assessed by sequencing and analysis of clonality.ResultsIn the blood, ibrutinib monotherapy significantly increased the frequencies of activated inducible T cell costimulator+(ICOS+) CD4+ T cells and monocytes. Within the TME, ibrutinib monotherapy led to a trend in decreased B-cell abundance but increased interleukin-10+ B-cell frequency. Monotherapy also led to a trend in increased mature CD208+dendritic cell density, increased late effector (programmed cell death protein 1 (PD-1-) eomesodermin (EOMES+)) CD8+ T-cell frequency, with a concomitantly decreased dysfunctional (PD-1+ EOMES+) CD8+ T-cell frequency. When ibrutinib was combined with chemotherapy, most of these immune changes were not observed. Patients with partial clinical responses had more diverse T and B cell receptor repertoires prior to therapy initiation.ConclusionIbrutinib monotherapy skewed the immune landscape both in the circulation and TME towards activated T cells, monocytes and DCs. These effects were not observed when combining ibrutinib with standard of care chemotherapy. Future studies may focus on other therapeutic combinations that augment the immunomodulatory effects of ibrutinib in solid tumors.Trial registration numberNCT02562898.

Published
2023

41. Search for secluded dark matter towards the Galactic Centre with the ANTARES neutrino telescope

Author

Albert, A., Alves, S., Andre, M., Anghinolfi, M., Anton, G., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Branzas, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Capone, A., Caramete, L., Carr, J., Carretero, V., Celli, S., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Diaz, A. F., de Wasseige, G., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Khayati, N. El, Enzenhoefer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gatelet, Y., Gay, P., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernandez-Rey, J. J., Hoessl, J., Hofestaedt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Khan-Chowdhury, N. R., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Gualda, C. Lagunas, Lahmann, R., Breton, R. Le, LeStum, S., Lefevre, D., Leonora, E., Levi, G., Lincetto, M., Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martinez-Mora, J. A., Martino, B., Melis, K., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. O, Paun, A., Pavalas, G. E., Pellegrino, C., Perrin-Terrin, M., Pestel, V., Piattelli, P., Pieterse, C., Poire, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sala, F., Sanchez-Losa, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schuessler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Van Elewyck, V., Versari, F., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., and Zuniga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Phenomenology
Abstract

Searches for dark matter (DM) have not provided any solid evidence for the existence of weakly interacting massive particles in the GeV-TeV mass range. Coincidentally, the scale of new physics is being pushed by collider searches well beyond the TeV domain. This situation strongly motivates the exploration of DM masses much larger than a TeV. Secluded scenarios contain a natural way around the unitarity bound on the DM mass, via the early matter domination induced by the mediator of its interactions with the Standard Model. High-energy neutrinos constitute one of the very few direct accesses to energy scales above a few TeV. An indirect search for secluded DM signals has been performed with the ANTARES neutrino telescope using data from 2007 to 2015. Upper limits on the DM annihilation cross section for DM masses up to 6 PeV are presented and discussed.

Published
2022
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42. Estudio CORCOBIA: determinación de puntos de corte de biomarcadores de enfermedad de Alzheimer en LCR en una cohorte clínica

Author

Puig-Pijoan, A., García-Escobar, G., Fernández-Lebrero, A., Manero Borràs, R.M., Sánchez-Benavides, G., Navalpotro-Gómez, I., Cascales Lahoz, D., Suárez-Calvet, M., Grau-Rivera, O., Boltes Alandí, A., Pont-Sunyer, M.C., Ortiz-Gil, J., Carrillo-Molina, S., López-Villegas, D., Abellán-Vidal, M.T., Martínez-Casamitjana, M.I., Hernández-Sánchez, J.J., Peña-Casanova, J., Roquer, J., Padrós Fluvià, A., and Puente-Périz, V.

Published
2024
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46. Search for Magnetic Monopoles with ten years of the ANTARES neutrino telescope

Author

ANTARES Collaboration, Albert, A., Alves, S., André, M., Anghinolfi, M., Anton, G., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Capone, A., Caramete, L., Carr, J., Carretero, V., Celli, S., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Díaz, A. F., de Wasseige, G., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Khayati, N. El, Enzenhöfer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gatelet, Y., Gay, P., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Khan-Chowdhury, N. R., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Breton, R. Le, LeStum, S., Lefèvre, D., Leonora, E., Levi, G., Lincetto, M., Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Martino, B., Melis, K., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. Ó, Păun, A., Păvălaş, G. E., Pellegrino, C., Perrin-Terrin, M., Pestel, V., Piattelli, P., Pieterse, C., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Van Elewyck, V., Versari, F., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

This work presents a new search for magnetic monopoles using data taken with the ANTARES neutrino telescope over a period of 10 years (January 2008 to December 2017). Compared to previous ANTARES searches, this analysis uses a run-by-run simulation strategy, with a larger exposure as well as a new simulation of magnetic monopoles taking into account the Kasama, Yang and Goldhaber model for their interaction cross-section with matter. No signal compatible with the passage of relativistic magnetic monopoles is observed, and upper limits on the flux of magnetic monopoles with $\beta$ = v/c $\geq$ 0.55, are presented. For ultra-relativistic magnetic monopoles the flux limit is $\sim$ 7$\times$$10^{-18}$ $\rm cm^{-2} s^{-1} sr^{-1}$., Comment: 20 pages, 7 figures, accepted for publication in the Journal of High Energy Astrophysics

Published
2022
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47. Search for solar atmospheric neutrinos with the ANTARES neutrino telescope

Author

ANTARES Collaboration, Albert, A., Alves, S., André, M., Anghinolfi, M., Anton, G., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Capone, A., Caramete, L., Carr, J., Carretero, V., Celli, S., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Díaz, A. F., de Wasseige, G., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Khayati, N. El, Enzenhöfer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gatelet, Y., Gay, P., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Khan-Chowdhury, N. R., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Breton, R. Le, LeStum, S., Lefèvre, D., Leonora, E., Levi, G., Lincetto, M., Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Martino, B., Melis, K., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. Ó, Păun, A., Păvălaş, G. E., Pellegrino, C., Perrin-Terrin, M., Pestel, V., Piattelli, P., Pieterse, C., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Van Elewyck, V., Versari, F., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., and Zúñiga, J.

Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

Solar Atmospheric Neutrinos (SA$\nu$s) are produced by the interaction of cosmic rays with the solar medium. The detection of SA$\nu$s would provide useful information on the composition of primary cosmic rays as well as the solar density. These neutrinos represent an irreducible source of background for indirect searches for dark matter towards the Sun and the measurement of their flux would allow for a better assessment of the uncertainties related to these searches. In this paper we report on the analysis performed, based on an unbinned likelihood maximisation, to search for SA$\nu$s with the ANTARES neutrino telescope. After analysing the data collected over 11 years, no evidence for a solar atmospheric neutrino signal has been found. An upper limit at 90\% confidence level on the flux of solar atmospheric neutrinos has been obtained, equal to 7$\times$$10^{-11}$ [TeV$^{-1}$cm$^{-2}$s$^{-1}$] at E$_\nu =$ 1 TeV for the reference cosmic ray model assumed., Comment: Sections renamed and reorganized as asked by the Journal

Published
2022
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48. Search for Spatial Correlations of Neutrinos with Ultra-High-Energy Cosmic Rays

Author

The ANTARES collaboration, Albert, A., Alves, S., André, M., Anghinolfi, M., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzaş, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Capone, A., Caramete, L., Carr, J., Carretero, V., Celli, S., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Díaz, A. F., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Khayati, N. El, Enzenhöfer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gatelet, Y., Gay, P., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Khan-Chowdhury, N. R., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Breton, R. Le, LeStum, S., Lefèvre, D., Leonora, E., Levi, G., Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Martino, B., Melis, K., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. Ó, Păun, A., Păvălaş, G. E., Pellegrino, C., Perrin-Terrin, M., Pestel, V., Piattelli, P., Pieterse, C., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Tingay, S. J., Vallage, B., Van Elewyck, V., Versari, F., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., Zúñiga, J., collaboration, The IceCube, Abbasi, R., Ackermann, M., Adams, J., Aguilar, J. A., Ahlers, M., Ahrens, M., Alameddine, J. M., Alispach, C., Alves Jr., A. A., Amin, N. M., Andeen, K., Anderson, T., Anton, G., Argüelles, C., Ashida, Y., Axani, S., Bai, X., V., A. Balagopal, Barbano, A., Barwick, S. W., Bastian, B., Basu, V., Baur, S., Bay, R., Beatty, J. J., Becker, K. -H., Tjus, J. Becker, Bellenghi, C., BenZvi, S., Berley, D., Bernardini, E., Besson, D. Z., Binder, G., Bindig, D., Blaufuss, E., Blot, S., Boddenberg, M., Bontempo, F., Borowka, J., Böser, S., Botner, O., Böttcher, J., Bourbeau, E., Bradascio, F., Braun, J., Brinson, B., Bron, S., Brostean-Kaiser, J., Browne, S., Burgman, A., Burley, R. T., Busse, R. S., Campana, M. A., Carnie-Bronca, E. G., Chen, C., Chen, Z., Chirkin, D., Choi, K., Clark, B. A., Clark, K., Classen, L., Collin, G. H., Conrad, J. M., Coppin, P., Correa, P., Cowen, D. F., Cross, R., Dappen, C., Dave, P., De Clercq, C., DeLaunay, J. J., López, D. Delgado, Dembinski, H., Deoskar, K., Desai, A., Desiati, P., de Vries, K. D., de Wasseige, G., de With, M., DeYoung, T., Diaz, A., Díaz-Vélez, J. C., Dittmer, M., Dujmovic, H., Dunkman, M., DuVernois, M. A., Dvorak, E., Ehrhardt, T., Eller, P., Erpenbeck, H., Evans, J., Evenson, P. A., Fan, K. L., Fazely, A. R., Fedynitch, A., Feigl, N., Fiedlschuster, S., Fienberg, A. T., Filimonov, K., Finley, C., Fischer, L., Fox, D., Franckowiak, A., Friedman, E., Fritz, A., Fürst, P., Gaisser, T. K., Gallagher, J., Ganster, E., Garcia, A., Garrappa, S., Gerhardt, L., Ghadimi, A., Glaser, C., Glauch, T., Glüsenkamp, T., Gonzalez, J. G., Goswami, S., Grant, D., Grégoire, T., Griswold, S., Günther, C., Gutjahr, P., Haack, C., Hallgren, A., Halliday, R., Halve, L., Halzen, F., Minh, M. Ha, Hanson, K., Hardin, J., Harnisch, A. A., Haungs, A., Hebecker, D., Helbing, K., Henningsen, F., Hettinger, E. C., Hickford, S., Hignight, J., Hill, C., Hill, G. C., Hoffman, K. D., Hoffmann, R., Hokanson-Fasig, B., Hoshina, K., Huber, M., Huber, T., Hultqvist, K., Hünnefeld, M., Hussain, R., Hymon, K., In, S., Iovine, N., Ishihara, A., Jansson, M., Japaridze, G. S., Jeong, M., Jin, M., Jones, B. J. P., Kang, D., Kang, W., Kang, X., Kappes, A., Kappesser, D., Kardum, L., Karg, T., Karl, M., Karle, A., Kauer, M., Kellermann, M., Kelley, J. L., Kheirandish, A., Kin, K., Kintscher, T., Kiryluk, J., Klein, S. R., Koirala, R., Kolanoski, H., Kontrimas, T., Köpke, L., Kopper, C., Kopper, S., Koskinen, D. J., Koundal, P., Kovacevich, M., Kowalski, M., Kozynets, T., Kun, E., Kurahashi, N., Lad, N., Gualda, C. Lagunas, Lanfranchi, J. L., Larson, M. J., Lauber, F., Lazar, J. P., Lee, J. W., Leonard, K., Leszczyńska, A., Li, Y., Lincetto, M., Liu, Q. R., Liubarska, M., Lohfink, E., Mariscal, C. J. Lozano, Lucarelli, F., Ludwig, A., Luszczak, W., Lyu, Y., Ma, W. Y., Madsen, J., Mahn, K. B. M., Makino, Y., Mancina, S., Martinez-Soler, I., Maruyama, R., Mase, K., McElroy, T., McNally, F., Mead, J. V., Meagher, K., Mechbal, S., Medina, A., Meier, M., Meighen-Berger, S., Micallef, J., Mockler, D., Montaruli, T., Moore, R. W., Morse, R., Moulai, M., Naab, R., Nagai, R., Naumann, U., Necker, J., Nguyên, L. V., Niederhausen, H., Nisa, M. U., Nowicki, S. C., Pollmann, A. Obertacke, Oehler, M., Oeyen, B., Olivas, A., O'Sullivan, E., Pandya, H., Pankova, D. V., Park, N., Parker, G. K., Paudel, E. N., Paul, L., Heros, C. Pérez de los, Peters, L., Peterson, J., Philippen, S., Pieper, S., Pittermann, M., Pizzuto, A., Plum, M., Popovych, Y., Porcelli, A., Rodriguez, M. Prado, Price, P. B., Pries, B., Przybylski, G. T., Raab, C., Rack-Helleis, J., Raissi, A., Rameez, M., Rawlins, K., Rea, I. C., Rehman, A., Reichherzer, P., Reimann, R., Renzi, G., Resconi, E., Reusch, S., Rhode, W., Richman, M., Riedel, B., Roberts, E. J., Robertson, S., Roellinghoff, G., Rongen, M., Rott, C., Ruhe, T., Ryckbosch, D., Cantu, D. Rysewyk, Safa, I., Saffer, J., Herrera, S. E. Sanchez, Sandrock, A., Santander, M., Sarkar, S., Satalecka, K., Schaufel, M., Schindler, S., Schmidt, T., Schneider, A., Schneider, J., Schröder, F. G., Schumacher, L., Schwefer, G., Sclafani, S., Seckel, D., Seunarine, S., Sharma, A., Shefali, S., Silva, M., Skrzypek, B., Smithers, B., Snihur, R., Soedingrekso, J., Soldin, D., Spannfellner, C., Spiczak, G. M., Spiering, C., Stachurska, J., Stamatikos, M., Stanev, T., Stein, R., Stettner, J., Steuer, A., Stezelberger, T., Stürwald, T., Stuttard, T., Sullivan, G. W., Taboada, I., Ter-Antonyan, S., Tilav, S., Tischbein, F., Tollefson, K., Tönnis, C., Toscano, S., Tosi, D., Trettin, A., Tselengidou, M., Tung, C. F., Turcati, A., Turcotte, R., Turley, C. F., Twagirayezu, J. P., Ty, B., Elorrieta, M. A. Unland, Valtonen-Mattila, N., Vandenbroucke, J., van Eijndhoven, N., Vannerom, D., van Santen, J., Verpoest, S., Walck, C., Watson, T. B., Weaver, C., Weigel, P., Weindl, A., Weiss, M. J., Weldert, J., Wendt, C., Werthebach, J., Weyrauch, M., Whitehorn, N., Wiebusch, C. H., Williams, D. R., Wolf, M., Woschnagg, K., Wrede, G., Wulff, J., Xu, X. W., Yanez, J. P., Yoshida, S., Yu, S., Yuan, T., Zhang, Z., Zhelnin, P., collaboration, The Pierre Auger, Abreu, P., Aglietta, M., Albury, J. M., Allekotte, I., Cheminant, K. Almeida, Almela, A., Alvarez-Muñiz, J., Batista, R. Alves, Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Aramo, C., Ferreira, P. R. Araújo, Arnone, E., Velázquez, J. C. Arteaga, Asorey, H., Assis, P., Avila, G., Badescu, A. M., Bakalova, A., Balaceanu, A., Barbato, F., Bellido, J. A., Berat, C., Bertaina, M. E., Bertou, X., Bhatta, G., Biermann, P. 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Subjects
Astrophysics - High Energy Astrophysical Phenomena
Abstract

For several decades, the origin of ultra-high-energy cosmic rays (UHECRs) has been an unsolved question of high-energy astrophysics. One approach for solving this puzzle is to correlate UHECRs with high-energy neutrinos, since neutrinos are a direct probe of hadronic interactions of cosmic rays and are not deflected by magnetic fields. In this paper, we present three different approaches for correlating the arrival directions of neutrinos with the arrival directions of UHECRs. The neutrino data is provided by the IceCube Neutrino Observatory and ANTARES, while the UHECR data with energies above $\sim$50 EeV is provided by the Pierre Auger Observatory and the Telescope Array. All experiments provide increased statistics and improved reconstructions with respect to our previous results reported in 2015. The first analysis uses a high-statistics neutrino sample optimized for point-source searches to search for excesses of neutrinos clustering in the vicinity of UHECR directions. The second analysis searches for an excess of UHECRs in the direction of the highest-energy neutrinos. The third analysis searches for an excess of pairs of UHECRs and highest-energy neutrinos on different angular scales. None of the analyses has found a significant excess, and previously reported over-fluctuations are reduced in significance. Based on these results, we further constrain the neutrino flux spatially correlated with UHECRs., Comment: 39 pages, 7 figures, 4 tables; updated source files including xml authorlist

Published
2022
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50. Search for non-standard neutrino interactions with 10 years of ANTARES data

Author

Albert, A., Alves, S., André, M., Anghinolfi, M., Anton, G., Ardid, M., Ardid, S., Aubert, J. -J., Aublin, J., Baret, B., Basa, S., Belhorma, B., Bendahman, M., Benfenati, F., Bertin, V., Biagi, S., Bissinger, M., Boumaaza, J., Bouta, M., Bouwhuis, M. C., Brânzas, H., Bruijn, R., Brunner, J., Busto, J., Caiffi, B., Calvo, D., Capone, A., Caramete, L., Carr, J., Carretero, V., Celli, S., Chabab, M., Chau, T. N., Moursli, R. Cherkaoui El, Chiarusi, T., Circella, M., Coleiro, A., Coniglione, R., Coyle, P., Creusot, A., Díaz, A. F., de Wasseige, G., Distefano, C., Di Palma, I., Domi, A., Donzaud, C., Dornic, D., Drouhin, D., Eberl, T., van Eeden, T., van Eijk, D., Khayati, N. El, Enzenhöfer, A., Fermani, P., Ferrara, G., Filippini, F., Fusco, L., Gatelet, Y., Gay, P., Glotin, H., Gozzini, R., Ruiz, R. Gracia, Graf, K., Guidi, C., Hallmann, S., van Haren, H., Heijboer, A. J., Hello, Y., Hernández-Rey, J. J., Hößl, J., Hofestädt, J., Huang, F., Illuminati, G., James, C. W., Jisse-Jung, B., de Jong, M., de Jong, P., Kadler, M., Kalekin, O., Katz, U., Khan-Chowdhury, N. R., Kouchner, A., Kreykenbohm, I., Kulikovskiy, V., Lahmann, R., Breton, R. Le, LeStum, S., Lefèvre, D., Leonora, E., Levi, G., Lincetto, M., Lopez-Coto, D., Loucatos, S., Maderer, L., Manczak, J., Marcelin, M., Margiotta, A., Marinelli, A., Martínez-Mora, J. A., Martino, B., Melis, K., Migliozzi, P., Moussa, A., Muller, R., Nauta, L., Navas, S., Nezri, E., Fearraigh, B. Ó, Paun, A., Pavalas, G. E., Pellegrino, C., Perrin-Terrin, M., Pestel, V., Piattelli, P., Pieterse, C., Poirè, C., Popa, V., Pradier, T., Randazzo, N., Real, D., Reck, S., Riccobene, G., Romanov, A., Sánchez-Losa, A., Greus, F. Salesa, Samtleben, D. F. E., Sanguineti, M., Sapienza, P., Schnabel, J., Schumann, J., Schüssler, F., Seneca, J., Spurio, M., Stolarczyk, Th., Taiuti, M., Tayalati, Y., Thakore, T., Tingay, S. J., Vallage, B., Van Elewyck, V., Versari, F., Viola, S., Vivolo, D., Wilms, J., Zavatarelli, S., Zegarelli, A., Zornoza, J. D., and Zúñiga, J.

Subjects
High Energy Physics - Experiment
Abstract

Non-standard interactions of neutrinos arising in many theories beyond the Standard Model can significantly alter matter effects in atmospheric neutrino propagation through the Earth. In this paper, a search for deviations from the prediction of the standard 3-flavour atmospheric neutrino oscillations using the data taken by the ANTARES neutrino telescope is presented. Ten years of atmospheric neutrino data collected from 2007 to 2016, with reconstructed energies in the range from $\sim$16 GeV to $100$ GeV, have been analysed. A log-likelihood ratio test of the dimensionless coefficients $\varepsilon_{\mu\tau}$ and $\varepsilon_{\tau\tau} - \varepsilon_{\mu\mu}$ does not provide clear evidence of deviations from standard interactions. For normal neutrino mass ordering, the combined fit of both coefficients yields a value 1.7$\sigma$ away from the null result. However, the 68% and 95% confidence level intervals for $\varepsilon_{\mu\tau}$ and $\varepsilon_{\tau\tau} - \varepsilon_{\mu\mu}$, respectively, contain the null value. Best fit values, one standard deviation errors and bounds at the 90% confidence level for these coefficients are given for both normal and inverted mass orderings. The constraint on $\varepsilon_{\mu\tau}$ is among the most stringent to date and it further restrains the strength of possible non-standard interactions in the $\mu - \tau$ sector., Comment: 22 pages, 4 figures

Published
2021

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