Publications (58)
Spin reorientation transition in the incommensurate stripe-ordered phase of La3/2Sr1/2NiO4
P. G. Freeman, A. T. boothroyd, D. Prabhakaran +2
The spin ordering of La3/2Sr1/2NiO4 was investigated by magnetization measurements, and by unpolarized- and polarized-neutron diffraction. Spin ordering with an incommensurability…
Calibration and Monitoring of the Pierre Auger Observatory
The Pierre Auger Collaboration, J. Abraham, P. Abreu +470
Reports on the atmospheric monitoring, calibration, and other operating systems of the Pierre Auger Observatory. Contributions to the 31st International Cosmic Ray Conference, Lodz…
Trigger and Aperture of the Surface Detector Array of the Pierre Auger Observatory
J. Abraham, P. Abreu, M. Aglietta +469
The surface detector array of the Pierre Auger Observatory consists of 1600 water-Cherenkov detectors, for the study of extensive air showers (EAS) generated by ultra-high-energy c…
Operations of and Future Plans for the Pierre Auger Observatory
The Pierre Auger Collaboration, J. Abraham, P. Abreu +469
Technical reports on operations and features of the Pierre Auger Observatory, including ongoing and planned enhancements and the status of the future northern hemisphere portion of…
Pulse Shape Discrimination in the IGEX Experiment
D. Gonzalez, J. Morales, S. Cebrian +21
The IGEX experiment has been operating enriched germanium detectors in the Canfranc Underground Laboratory (Spain) in a search for the neutrinoless double decay of 76Ge. The implem…
Particle Dark Matter and Solar Axion Searches with a small germanium detector at the Canfranc Underground Laboratory
A. Morales, F. T. Avignone, R. L. Brodzinski +12
A small, natural abundance, germanium detector (COSME) has been operating recently at the Canfranc Underground Laboratory (Spanish Pyrenees) in improved conditions of shielding and…
Testing Scale-Dependent Modified Gravity with DESI DR1
D. Gonzalez, G. Niz, A. Aviles +42
The Dark Energy Spectroscopic Instrument (DESI) provides an unprecedented opportunity to test deviations from general relativity (GR) that introduce a new physical scale within its…
Spontaneous formation of well-defined Al rich shell structures in AlxGa1-xN/GaN nanowires
D. Gonzalez, R. Fath, T. Ben +1
Growth of catalyst-free AlxGa1-xN (0.15<x<0.50)/GaN nanowires by plasma assisted molecular beam epitaxy is thoroughly structural and chemical analyzed by using transmission electro…
Search for signatures of magnetically-induced alignment in the arrival directions measured by the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +496
We present the results of an analysis of data recorded at the Pierre Auger Observatory in which we search for groups of directionally-aligned events (or `multiplets') which exhibit…
Lyman- forest holography: 3D predictions from 1D measurements
J. Chaves-Montero, A. Font-Ribera, J. Aguilar +68
The paper introduces ForestFlow, an emulator that connects one‑dimensional Lyman‑α forest flux power spectrum measurements to three‑dimensional clustering predictions, enabling com…
The Pierre Auger Observatory II: Studies of Cosmic Ray Composition and Hadronic Interaction models
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Studies of the composition of the highest energy cosmic rays with the Pierre Auger Observatory, including examination of hadronic physics effects on the structure of extensive air…
Validation of the DESI DR2 Ly forest full-shape analysis
M. Herbold, A. Cuceu, P. Martini +107
The paper validates the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 analysis of the Lyman‑α forest, focusing on extracting the Alcock‑Paczynski (AP) measurement from…
Advanced functionality for radio analysis in the Offline software framework of the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +468
The advent of the Auger Engineering Radio Array (AERA) necessitates the development of a powerful framework for the analysis of radio measurements of cosmic ray air showers. As AER…
Optical Photometry of the Type Ia SN 1999ee and the Type Ib/c SN 1999ex in IC 5179
M. Stritzinger, M. Hamuy, N. B. Suntzeff +14
We present UBVRIz lightcurves of the Type Ia SN 1999ee and the Type Ib/c SN 1999ex, both located in the galaxy IC 5179. SN 1999ee has an extremely well sampled lightcurve spanning…
Constraints on Neutrino Physics from DESI DR2 BAO and DR1 Full Shape
W. Elbers, A. Aviles, H. E. Noriega +116
The Dark Energy Spectroscopic Instrument (DESI) Collaboration has obtained robust measurements of baryon acoustic oscillations (BAO) in the redshift range, , based o…
Falsifying Tree Level String Motivated Bouncing Cosmologies
C. P. Constantinidis, J. C. Fabris, R. G. Furtado +2
The string effective action at tree level contains, in its bosonic sector, the Einstein-Hilbert term, the dilaton, and the axion, besides scalar and gauge fields coming from the Ra…
Blade Antenna-SDR System Prototype for the CANTAR Global 21-cm Experiment: Simulations, Measurements, and In-Situ Results
F. P. Mosquera, J. Rodriguez-Ferreira, E. Acevedo +3
We present the design and initial testing of a low-frequency radio telescope prototype developed for the CANTAR (Colombian Antarctic Telescope for 21-cm Absorption during Reionizat…
A study of the electronic properties of liquid alkali metals. A self--consistent approach
W. Geertsma, D. Gonzalez, L. H. Gonzalez
We study the electronic properties (density of states, conductivity and thermopower) of some nearly--free--electron systems: the liquid alkali metals and two liquid alloys, Li-Na a…
Sensitivity plots for WIMP modulation searches
S. Scopel, S. Cebrian, E. Garcia +9
Prospects of WIMP searches using the annual modulation signature are discussed on statistical grounds, introducing sensitivity plots for the WIMP-nucleon scalar cross section.
CoLoRe-2LPT: Lyman- mock catalogues for the validation of DESI cosmological analyses
M. F. Ruiz-Herrera Bernal, S. Avila, A. Font-Ribera +90
The paper presents fast Lyman‑α forest mock catalogues generated with second‑order Lagrangian perturbation theory (2LPT) that accurately reproduce small‑scale clustering, BAO broad…
A search for ultra-high energy neutrinos in highly inclined events at the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +497
The Surface Detector of the Pierre Auger Observatory is sensitive to neutrinos of all flavours above 0.1 EeV. These interact through charged and neutral currents in the atmosphere…
The Fluorescence Detector of the Pierre Auger Observatory
The Pierre Auger Collaboration, J. Abraham, P. Abreu +515
The Pierre Auger Observatory is a hybrid detector for ultra-high energy cosmic rays. It combines a surface array to measure secondary particles at ground level together with a fluo…
Description of Atmospheric Conditions at the Pierre Auger Observatory using the Global Data Assimilation System (GDAS)
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +499
Atmospheric conditions at the site of a cosmic ray observatory must be known for reconstructing observed extensive air showers. The Global Data Assimilation System (GDAS) is a glob…
Strain-balanced type-II superlattices for efficient multi-junction solar cells
A. Gonzalo, A. D. Utrilla, D. F. Reyes +9
We propose type-II GaAsSb/GaAsN superlattices (SLs) lattice-matched to GaAs as a novel material for the 1 eV sub-cells present in highly efficient GaAs/Ge-based multi-junction sola…
The role of slip transfer at grain boundaries in the propagation of microstructurally short fatigue cracks in Ni-based superalloys
M. Jiménez, W. Ludwig, D. Gonzalez +1
Crack initiation and propagation under high-cycle fatigue conditions have been investigated for a polycrystalline Ni-based superalloy by in-situ synchrotron assisted diffraction an…
The Globular Cluster NGC 5286. II. Variable Stars
M. Zorotovic, M. Catelan, H. A. Smith +18
We present the results of a search for variable stars in the globular cluster NGC 5286, which has recently been suggested to be associated with the Canis Major dwarf spheroidal gal…
New constraints on WIMPs from the Canfranc IGEX dark matter search
A. Morales, C. E. Aalseth, F. T. Avignone +22
The IGEX Collaboration enriched 76Ge double-beta decay detectors are currently operating in the Canfranc Underground Laboratory with an overburden of 2450 m.w.e. A recent upgrade h…
Optical and Near-Infrared Observations of the Peculiar Type Ia Supernova 1999ac
Mark M. Phillips, Kevin Krisciunas, Nicholas B. Suntzeff +29
We present 39 nights of optical photometry, 34 nights of infrared photometry, and 4 nights of optical spectroscopy of the Type Ia SN 1999ac. This supernova was discovered two weeks…
The effect of the geomagnetic field on cosmic ray energy estimates and large scale anisotropy searches on data from the Pierre Auger Observatory
P. Abreu, M. Aglietta, E. J. Ahn +495
We present a comprehensive study of the influence of the geomagnetic field on the energy estimation of extensive air showers with a zenith angle smaller than , detected a…
Theoretical expectations and experimental prospects for solar axions searches with crystal detectors
S. Scopel, I. G. Irastorza, S. Cebrian +9
A calculation of the expected signal due to Primakov coherent conversion of solar axions into photons via Bragg scattering in several solid--state detectors is presented and compar…
Prospects for solar axions searches with crystals via Bragg scattering
I. G. Irastorza, S. Cebrian, E. Garcia +9
A calculation of the expected signal due to Primakov coherent conversion of solar axions into photons via Bragg scattering in several solid-state detectors is presented and compare…
Search for First Harmonic Modulation in the Right Ascension Distribution of Cosmic Rays Detected at the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +466
We present the results of searches for dipolar-type anisotropies in different energy ranges above eV with the surface detector array of the Pierre Auger Observa…
The Pierre Auger Observatory IV: Operation and Monitoring
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Technical reports on operations and monitoring of the Pierre Auger Observatory
The Pierre Auger Observatory I: The Cosmic Ray Energy Spectrum and Related Measurements
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Studies of the cosmic ray energy spectrum at the highest energies with the Pierre Auger Observatory
Upper limit on the cosmic-ray photon fraction at EeV energies from the Pierre Auger Observatory
The Pierre Auger Collaboration, J. Abraham, P. Abreu +458
From direct observations of the longitudinal development of ultra-high energy air showers performed with the Pierre Auger Observatory, upper limits of 3.8%, 2.4%, 3.5% and 11.7% (a…
Optical and Infrared Photometry of the Unusual Type Ia Supernova 2000cx
P. Candia, K. Krisciunas, Nicholas B. Suntzeff +16
We present optical and infrared photometry of the unusual Type Ia supernova 2000cx. With the data of Li et al. (2001) and Jha (2002), this comprises the largest dataset ever assemb…
Density functional theory modeling of vortex shedding in superfluid He-4
A. Freund, D. Gonzalez, X. Buelna +2
Formation of vortex rings around moving spherical objects in superfluid He-4 at 0 K is modeled by time-dependent density functional theory. The simulations provide detailed informa…
DESI DR2 Results II: Measurements of Baryon Acoustic Oscillations and Cosmological Constraints
DESI Collaboration, M. Abdul-Karim, J. Aguilar +184
We present baryon acoustic oscillation (BAO) measurements from more than 14 million galaxies and quasars drawn from the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (…
Can Transformers overcome the lack of data in the simulation of history-dependent flows?
P. Urdeitx, I. Alfaro, D. Gonzalez +2
It is well known that the lack of information about certain variables necessary for the description of a dynamical system leads to the introduction of historical dependence (lack o…
Assessing the stellar population and the environment of an HII region on the far side of the Galaxy
A. -N. Chené, R. A. Benjamin, S. RamÃrez AlegrÃa +15
We have investigated the stellar and interstellar content of the distant star formation region IRAS 17591-2228 (WISE HII region GAL 007.47+0.06). It is associated to a water maser,…
FolpsD: combining EFT and phenomenological approaches for joint power spectrum and bispectrum analyses
P. Bansal, A. Aviles, H. E. Noriega +56
We present a theoretical model for the power spectrum and bispectrum of galaxy clustering that exploits the complementarity between small-scale power spectrum information and large…
The Pierre Auger Observatory V: Enhancements
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Ongoing and planned enhancements of the Pierre Auger Observatory
Update on the correlation of the highest energy cosmic rays with nearby extragalactic matter
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +472
Data collected by the Pierre Auger Observatory through 31 August 2007 showed evidence for anisotropy in the arrival directions of cosmic rays above the Greisen-Zatsepin-Kuz'min ene…
The Cosmic Ray Energy Spectrum and Related Measurements with the Pierre Auger Observatory
The Pierre Auger Collaboration, J. Abraham, P. Abreu +469
Studies of the cosmic ray energy spectrum at the highest energies with the Pierre Auger Observatory.
The Igex 76ge Neutrinoless Double-Beta Decay Experiment: Prospects for Next Generation Experiments
C. E. Aalseth, F. T. Avignone, R. L. Brodzinski +22
The International Germanium Experiment (IGEX) has analyzed 117 mole yr of 76Ge data from its isotopically enriched (86% 76Ge) germanium detectors. Applying pulse-shape discriminati…
Data Release 1 of the Dark Energy Spectroscopic Instrument
DESI Collaboration, M. Abdul Karim, A. G. Adame +306
In 2021 May the Dark Energy Spectroscopic Instrument (DESI) collaboration began a 5-year spectroscopic redshift survey to produce a detailed map of the evolving three-dimensional s…
The Pierre Auger Observatory III: Other Astrophysical Observations
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +493
Astrophysical observations of ultra-high-energy cosmic rays with the Pierre Auger Observatory
SDSS J0018+3454: An Extremely Long Orbital Period CV
D. Gonzalez, G. Tovmassian, S. Zharikov +2
We present here results of an optical spectroscopic study of a new Cataclysmic Variable SDSS J001856.93+345444.3. We demonstrate that the most probable value of the orbital period…
Recent results from the canfranc dark matter search with germanium detectors
I. G. Irastorza, A. Morales, C. E. Aalseth +14
Two germanium detectors are currently operating in the Canfranc Underground Laboratory at 2450 m.w.e looking for WIMP dark matter. One is a 2 kg 76Ge IGEX detector (RG-2) which has…
Phase mapping of aging process in InN nanostructures: oxygen incorporation and the role of the zincblende phase
D. Gonzalez, J. G. Lozano, M. Herrera +4
Uncapped InN nanostructures undergo a deleterious natural aging process at ambient conditions by oxygen incorporation. The phases involved in this process and their localization is…
Sensitivity plots for WIMP direct detection using the annual modulation signature
S. Cebrian, E. Garcia, D. Gonzalez +9
Annual modulation due to the Earth's motion around the Sun is a well known signature of the expected WIMP signal induced in a solid state underground detector. In the present lette…
First results of the ROSEBUD Dark Matter experiment
S. Cebrian, N. Coron, G. Dambier +13
Rare Objects SEarch with Bolometers UndergrounD) is an experiment which attempts to detect low mass Weak Interacting Massive Particles (WIMPs) through their elastic scattering off…
Prospects of solar axion searches with crystal detectors
S. Cebrian, E. Garcia, D. Gonzalez +9
A calculation of the expected signal due to Primakoff coherent conversion of solar axions into photons via Bragg scattering in several crystal detectors is presented. The results a…
Astrophysical Sources of Cosmic Rays and Related Measurements with the Pierre Auger Observatory
The Pierre Auger Collaboration, J. Abraham, P. Abreu +469
Studies of the correlations of ultra-high energy cosmic ray directions with extra-Galactic objects, of general anisotropy, of photons and neutrinos, and of other astrophysical effe…
Optical and Infrared Photometry of the Type Ia Supernovae 1991T, 1991bg, 1999ek, 2001bt, 2001cn, 2001cz, and 2002bo
Kevin Krisciunas, Nicholas B. Suntzeff, Mark M. Phillips +28
We present optical and/or infrared photometry of the Type Ia supernovae SN 1991T, SN 1991bg, SN 1999ek, SN 2001bt, SN 2001cn, SN 2001cz, and SN 2002bo. All but one of these superno…
Anisotropy and chemical composition of ultra-high energy cosmic rays using arrival directions measured by the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +490
The Pierre Auger Collaboration has reported evidence for anisotropy in the distribution of arrival directions of the cosmic rays with energies eV. Thes…
The Lateral Trigger Probability function for the Ultra-High Energy Cosmic Ray Showers detected by the Pierre Auger Observatory
The Pierre Auger Collaboration, P. Abreu, M. Aglietta +495
In this paper we introduce the concept of Lateral Trigger Probability (LTP) function, i.e., the probability for an extensive air shower (EAS) to trigger an individual detector of a…
Studies of Cosmic Ray Composition and Air Shower Structure with the Pierre Auger Observatory
The Pierre Auger Collaboration, J. Abraham, P. Abreu +470
Studies of the composition of the highest energy cosmic rays with the Pierre Auger Observatory, including examination of hadronic physics effects on the structure of extensive air…