bluuebunny/crossref_metadata_2025_split huggingface dataset:
The PAU Survey: a new constraint on galaxy formation models using the observed colour redshift relation
Authors: Manzoni G , Baugh C M , Norberg P , Cabayol L , van den Busch J L , Wittje A , Navarro-Gironés D , Eriksen M , Fosalba P , Carretero J , Castander F J , Casas R , De Vicente J , Fernandez E , García-Bellido J , Gaztanaga E , Helly J C , Hoekstra H , Hildebrandt H , Gonzalez E J , Koonkor S , Miquel R , Padilla C , Renard P , Sanchez E , Sevilla-Noarbe I , Siudek M , Soo J Y H , Tallada-Crespì P , Tortorelli L 
Published: March 2024

ABSTRACT
We use the GALFORM semi-analytical galaxy formation model implemented in the Planck Millennium N-body simulation to build a mock galaxy catalogue on an observer’s past lightcone. The mass resolution of this N-body simulation is almost an order of magnitude better than in previous simulations used for this purpose, allowing us to probe fainter galaxies and hence build a more complete mock catalogue at low redshifts. The high time cadence of the simulation outputs allows us to make improved calculations of galaxy properties and positions in the mock. We test the predictions of the mock against the Physics of the Accelerating Universe Survey, a narrow-band imaging survey with highly accurate and precise photometric redshifts, which probes the galaxy population over a lookback time of 8 billion years. We compare the model against the observed number counts, redshift distribution, and evolution of the observed colours and find good agreement; these statistics avoid the need for model-dependent processing of the observations. The model produces red and blue populations that have similar median colours to the observations. However, the bimodality of galaxy colours in the model is stronger than in the observations. This bimodality is reduced on including a simple model for errors in the GALFORM photometry. We examine how the model predictions for the observed galaxy colours change when perturbing key model parameters. This exercise shows that the median colours and relative abundance of red and blue galaxies provide constraints on the strength of the feedback driven by supernovae used in the model.
Budget equations and astrophysical non-linear mean-field dynamos
Authors: Rogachevskii I , Kleeorin N 
Published: March 2024

ABSTRACTSolar, stellar and galactic large-scale magnetic fields are originated due to a combined action of non-uniform (differential) rotation and helical motions of plasma via mean-field dynamos. Usually, non-linear mean-field dynamo theories take into account algebraic and dynamic quenching of alpha effect and algebraic quenching of turbulent magnetic diffusivity. However, the theories of the algebraic quenching do not take into account the effect of modification of the source of turbulence by the growing large-scale magnetic field. This phenomenon is due to the dissipation of the strong large-scale magnetic field resulting in an increase of the total turbulent energy. This effect has been studied using the budget equation for the total turbulent energy (which takes into account the feedback of the generated large-scale magnetic field on the background turbulence) for (i) a forced turbulence, (ii) a shear-produced turbulence, and (iii) a convective turbulence. As the result of this effect, a non-linear dynamo number decreases with increase of the large-scale magnetic field, so that that the mean-field αΩ, α2, and α2Ω dynamo instabilities are always saturated by the strong large-scale magnetic field.
Asteroseismic modelling of the chemically peculiar B-type pulsator with an asymptotic period spacing – a Cen
Authors: Walczak Przemysław , Kopacz Agnieszka 
Published: March 2024

ABSTRACT
A Cen is recognized as a magnetic variable star with peculiar helium abundance. The presence of large surface spots induces flux modulation, allowing for the derivation of the surface rotational period (∼8.8 d). TESS photometry has unveiled additional signals that we interpreted as SPB-type pulsation. Furthermore, we managed to find a regular period spacing pattern and hence identified pulsational modes. We performed an asteroseismic analysis that resulted in constraints for internal structure of the star. Taking into account the surface rotation period derived from spots and the internal rotation obtained from asteroseismology, we concluded that the gradient of the rotational velocity in the radial direction is very small, indicating nearly solid body rotation. We also constrained overshooting from the convective core, as well as the mass and metallicity of the star.
Large-scale excess H i absorption around z ≈ 4 galaxies detected in a background galaxy spectrum in the MUSE eXtremely deep field
Authors: Matthee Jorryt , Golling Christopher , Mackenzie Ruari , Pezzulli Gabriele , Lilly Simon , Schaye Joop , Bacon Roland , Kusakabe Haruka , Urrutia Tanya , Boogaard Leindert , Brinchmann Jarle , Maseda Michael V , Garel Thibault , Bouché Nicolas F , Wisotzki Lutz 
Published: March 2024

ABSTRACT
Observationally mapping the relation between galaxies and the intergalactic medium (IGM) is of key interest for studies of cosmic reionization. Diffuse hydrogen gas has typically been observed in H i Lyman-α (Lyα) absorption in the spectra of bright background quasars. However, it is important to extend these measurements to background galaxies as quasars become increasingly rare at high redshift and rarely probe closely separated sight lines. Here, we use deep integral field spectroscopy in the MUSE eXtremely Deep Field to demonstrate the measurement of the Lyα transmission at z ≈ 4 in absorption to a background galaxy at z = 4.77. The H i transmission is consistent with independent quasar sight lines at similar redshifts. Exploiting the high number of spectroscopic redshifts of faint galaxies (500 between z = 4.0–4.7 within a radius of 8 arcmin) that are tracers of the density field, we show that Lyα transmission is inversely correlated with galaxy density, i.e. transparent regions in the Lyα forest mark underdense regions at z ≈ 4. Due to large-scale clustering, galaxies are surrounded by excess H i absorption over the cosmic mean out to 4 cMpc/h70. We also find that redshifts from the peak of the Lyα line are typically offset from the systemic redshift by +170 km s−1. This work extends results from z ≈ 2–3 to higher redshifts and demonstrates the power of deep integral field spectroscopy to simultaneously measure the ionization structure of the IGM and the large-scale density field in the early Universe.
The GUAPOS project – V: The chemical ingredients of a massive stellar protocluster in the making
Authors: López-Gallifa Á , Rivilla V M , Beltrán M T , Colzi L , Mininni C , Sánchez-Monge Á , Fontani F , Viti S , Jiménez-Serra I , Testi L , Cesaroni R , Lorenzani A 
Published: March 2024

ABSTRACT
Most stars, including the Sun, are born in rich stellar clusters containing massive stars. Therefore, the study of the chemical reservoir of massive star-forming regions is crucial to understand the basic chemical ingredients available at the dawn of planetary systems. We present a detailed study of the molecular inventory of the hot molecular core G31.41+0.31 from the project GUAPOS (G31.41+0.31 Unbiased ALMA sPectral Observational Survey). We analyse 34 species for the first time plus 20 species analysed in previous GUAPOS works, including oxygen, nitrogen, sulfur, phosphorus, and chlorine species. We compare the abundances derived in G31.41+0.31 with those observed in other chemically-rich sources that represent the initial and last stages of the formation of stars and planets: the hot corino in the Solar-like protostar IRAS 16293-2422 B, and the comets 67P/Churyumov-Gerasimenko and 46P/Wirtanen. The comparative analysis reveals that the chemical feedstock of the two star-forming regions are similar. The abundances of oxygen- and nitrogen-bearing molecules exhibit a good correlation for all pair of sources, including the two comets, suggesting a chemical heritage of these species during the process of star formation, and hence an early phase formation of the molecules. However, sulfur- and phosphorus-bearing species present worse correlations, being more abundant in comets. This suggests that while sulfur- and phosphorus-bearing species are pre-dominantly trapped on the surface of icy grains in the hot close surroundings of protostars, they could be more easily released into gas phase in comets, allowing their cosmic abundances to be almost recovered.
Collisions of electrons with interstellar grains
Authors: Flower D R 
Published: March 2024

ABSTRACT
We have computed cross-sections for elastic and inelastic scattering of electrons on small grains at low-collision energies. Significant differences are again found between the results obtained in the presence and the absence of a ‘permanent’ grain dipole moment. In addition to spherical grains, scattering on ellipsoidal grains is investigated. We conclude that the rate of electron attachment to interstellar grains may be substantially lower in regions of molecular clouds from which the radiation field is excluded, and where the grains are less likely to possess a dipole moment.
Cold electrons at a weakly outgassing comet
Authors: Stephenson P , Galand M , Deca J , Henri P 
Published: March 2024

ABSTRACT
Throughout the Rosetta mission, cold electrons (&lt;1 eV) were measured in the coma of comet 67P/Churyumov–Gerasimenko. Cometary electrons are produced at ∼10 eV through photoionization or through electron-impact ionization collisions. The cold electron population is formed by cooling the warm population through inelastic electron–neutral collisions. Assuming radial electron outflow, electrons are collisional with the neutral gas coma below the electron exobase, which only formed above the comet surface in near-perihelion high-outgassing conditions (Q &gt; 3 × 1027 s−1). However, the cold population was identified at low outgassing (Q &lt; 1026 s−1), when the inner coma was not expected to be collisional. We examine cooling of electrons at a weakly outgassing comet, using a 3D collisional model of electrons at a comet. Electron paths are extended by trapping in an ambipolar electric field and by gyration around magnetic field lines. This increases the probability of electrons undergoing inelastic collisions with the coma and becoming cold. We demonstrate that a cold electron population can be formed and sustained, under weak outgassing conditions (Q = 1026 s−1), once 3D electron dynamics are accounted for. Cold electrons are produced in the inner coma through electron–neutral collisions and transported tailwards by an E × B drift We quantify the efficiency of trapping in driving electron cooling, with trajectories typically 100 times longer than expected from ballistic radial outflow. Based on collisional simulations, we define an estimate for a region where a cold electron population can form, bounded by an electron cooling exobase. This estimate agrees well with cold electron measurements from the Rosetta Plasma Consortium.
Positive Lynden-Bell derivative as a ticket to the bar trap?
Authors: Zozulia Viktor D , Smirnov Anton A , Sotnikova Natalia Ya 
Published: March 2024

ABSTRACT
We have translated the results of N-body simulations of one barred model into the language of action variables and frequencies. Using this language, we analysed the behaviour of all orbits in the model on a large time-scale at the stage of a mature bar. We show that the orbits join the bar while preserving their adiabatic invariant, which takes into account the three-dimensional structure of the orbits. This allows us to apply the concept of the Lynden-Bell derivative for each of these orbits and trace how the sign of the derivative changes; i.e. how asynchronous changes in angular momentum Lz and orbital precession rate Ωpr (normal orbital mode) change to synchronous (abnormal mode). The transition to the abnormal mode occurs when Ωpr reaches the angular velocity of the pattern Ωp, after which the orbit becomes stuck in the bar trap. All this happens against the background of secular changes in actions (Lz decreases, JR and Jz increase). At the same time, corotating particles near two stable Lagrange points are also subject to secular changes in their actions. They increase Lz and drift to the periphery, shifting corotation outwards. We also show that a change in the orbital mode from normal to abnormal and the trapping of orbits in a bar are possible only when the bar speed decreases with time, regardless of what is causing the bar to slow down. Our findings clarify and expand the picture of bar formation and evolution in numerical models.
Implication of nucleotides near the 3′ end of 16S rRNA in guarding the translational reading frame
Authors: Smart Alexandria , Lancaster Laura , Donohue John Paul , Niblett Dustin , Noller Harry F 
Published: March 2024

Abstract
Loss of the translational reading frame leads to misincorporation and premature termination, which can have lethal consequences. Based on structural evidence that A1503 of 16S rRNA intercalates between specific mRNA bases, we tested the possibility that it plays a role in maintenance of the reading frame by constructing ribosomes with an abasic nucleotide at position 1503. This was done by specific cleavage of 16S rRNA at position 1493 using the colicin E3 endonuclease and replacing the resulting 3′-terminal 49mer fragment with a synthetic oligonucleotide containing the abasic site using a novel splinted RNA ligation method. Ribosomes reconstituted from the abasic 1503 16S rRNA were highly active in protein synthesis but showed elevated levels of spontaneous frameshifting into the -1 reading frame. We then asked whether the residual frameshifting persisting in control ribosomes containing an intact A1503 is due to the absence of the N6-dimethyladenosine modifications at positions 1518 and 1519. Indeed, this frameshifting was rescued by site-specific methylation in vitro by the ksgA methylase. These findings thus implicate two different sites near the 3′ end of 16S rRNA in maintenance of the translational reading frame, providing yet another example of a functional role for ribosomal RNA in protein synthesis.
Impact of Total Indoor Smoking Ban on Cardiovascular Disease Hospitalizations and Mortality: The Case of Chile
Authors: Montes de Oca Daniela , Paraje Guillermo , Cuadrado Cristóbal 
Published: March 2024

Abstract

Introduction
The harmful effects of first and secondhand smoking are well-established. Smoke-free laws aim at protecting nonsmokers. This study aimed to assess the impact of the 2013 total ban on indoor smoking in Chile on hospitalizations and deaths of major cardiovascular events.

Aims and Methods
The logarithm of the monthly hospitalization and death rates, standardized by age for every 100 000 inhabitants, were estimated for ischemic heart disease, acute myocardial infarction, strokes, and a composite outcome of ischemic heart diseases (which includes acute myocardial infarction) and strokes. In addition, interrupted time series with synthetic control groups were used to assess changes in levels and trends after the intervention.

Results
The total ban on indoor smoking caused significant reductions in death rates for the three diseases studied for age groups above 20 years old. In addition, there were substantial decreases in the post-intervention hospitalization rates for ischemic heart disease: for the 20–44 age group, the decrease was 8.7% compared to the pre-intervention period (p &lt; .01). In comparison, such a reduction was 4% (p &lt; .01) for the ≥65 age group. For acute myocardial infarction, the decrease was 11.5% (p &lt; .01) for the 20–44 age group, while for stroke, it was a 1.2% (p &lt; .01) decrease for the total population. It is estimated that the smoking ban averted 15.6% of the deaths compared with the synthetic control groups.

Conclusions
The implementation of total smoke-free environments in Chile contributed to the reduction of mortality for main cardiovascular diseases. This study provides additional evidence of causality linking the policy to health outcomes.

Implications
The total indoor smoking ban significantly affected age-standardized hospitalization and deaths. The number of deaths averted by this policy is estimated at approximately 4758 and 5256 for IHD and stroke, respectively, during the 2013–2017 period (15.6% fewer deaths than predicted by the synthetic control groups). The study contributes to the body of evidence that supports total indoor smoking bans.
A Critical Inquiry into ‘Abuse’ in EU Competition Law
Authors: Akman Pınar 
Published: March 2024

Abstract
Disagreement abounds on what exactly constitutes an ‘abuse’ within article 102 TFEU, EU competition law’s prohibition of an abuse of a dominant position. This situation is highly undesirable, given the important role this prohibition is expected to play in alleviating concerns about substantial market power and its use in important sectors, typified by actions against ‘Big Tech’. This article responds to this problem by analysing and synthesising the jurisprudence of the Court of Justice of the European Union and its evolution to establish the constituent elements of an exclusionary ‘abuse’. The article corrects crucial legal misconceptions, including the putative dichotomy between violations ‘by object’ and ‘by effect’; the assumed disparate legal tests for pricing and non-pricing conduct; and the lost distinction between the ‘as efficient competitor test’ and the ‘as efficient competitor standard’. This critical inquiry allows one to draw concrete predictions on the future development of this challenging, yet vital, area of law.
Scattering spectra models for physics
Authors: Cheng Sihao , Morel Rudy , Allys Erwan , Ménard Brice , Mallat Stéphane 
Published: March 2024

Abstract
Physicists routinely need probabilistic models for a number of tasks such as parameter inference or the generation of new realizations of a field. Establishing such models for highly non-Gaussian fields is a challenge, especially when the number of samples is limited. In this paper, we introduce scattering spectra models for stationary fields and we show that they provide accurate and robust statistical descriptions of a wide range of fields encountered in physics. These models are based on covariances of scattering coefficients, i.e. wavelet decomposition of a field coupled with a pointwise modulus. After introducing useful dimension reductions taking advantage of the regularity of a field under rotation and scaling, we validate these models on various multiscale physical fields and demonstrate that they reproduce standard statistics, including spatial moments up to fourth order. The scattering spectra provide us with a low-dimensional structured representation that captures key properties encountered in a wide range of physical fields. These generic models can be used for data exploration, classification, parameter inference, symmetry detection, and component separation.
Reforming the Bench: Public Support for Supreme Court Institutional Change
Authors: Fleming Anna McCaghren , Montgomery Matthew D , Rogol Natalie C 
Published: March 2024

Abstract
Approval of the Supreme Court recently hit its lowest point in decades. Calls for reforming the Court have gained traction as a result. In this study, we look at how media framing can influence public support for two specific reforms: Court packing and term limits. In a survey experiment, we provide respondents with either a pro-, anti-, or mixed-valence framed message about one of these two reforms. We find support for the proposition that media messages have the power to decrease support for reform but not to increase support for reform. Additionally, we theorize that highlighting the conflict surrounding the Court activates ideological considerations individuals hold toward the Court. In support of this theory, we find that discussing either Court packing or term limits decreases specific support of the high Court among Democrats and increases specific support among Republicans across all conditions.
Integration through Expansive Unification: The Birth of the European Health Union
Authors: Ferrera Maurizio , Kyriazi Anna , Miró Joan 
Published: March 2024

Abstract
The coronavirus disease 2019 (COVID-19) pandemic pushed the European Union (EU) to centralize several public health functions. With the European Health Union (EHU) initiative, four reforms have been adopted to strengthen the EU’s health security framework: the extension of the European Medicines Agency and the European Centre for Disease Prevention and Control’s mandates, the creation of the Health Emergency Preparedness and Response Authority, and the upgrading of the Decision on serious cross-border threats to health. This article analyses the reconfiguration of authority patterns resulting from these reforms. It argues that the EHU exemplifies a distinct mode of integration (expansive unification) in which national sovereignty is not transferred to the center but is jointly exercised at the center. This mode of integration is suitable for capacity building in core state domains when functional needs confront reluctance from constituent units to surrender control.
Beyond sicca: high prevalence and predictors of baseline and worsening systemic involvement in patients with Sjögren’s disease
Authors: Bandeira Matilde , Silvério-António Manuel , Khmelinskii Nikita , Fonseca João E , Romão Vasco C 
Published: March 2024

Abstract

Objectives
Systemic extraglandular involvement in SS has been reported in one-third of patients but may be more frequent. We aimed to evaluate systemic disease prevalence at baseline and throughout follow-up and find its predictors.

Methods
We conducted a retrospective cohort study including SS patients followed in a tertiary centre. The cumulative EULAR SS disease activity index (ESSDAI) was calculated by adding each domain’s maximum score throughout follow-up. We identified independent predictors of systemic involvement (ESSDAI ≥1 at baseline and/or follow-up) through logistic regression modelling. A survival analysis was conducted to identify predictors of new/worsening ESSDAI domains.

Results
A total of 216 patients were included, most of whom had systemic involvement (86%), frequently at diagnosis (76%). Biological (53%) and articular ESSDAI domains (44%) were most commonly involved, but all were affected at least once. Around half of the patients with baseline systemic disease developed an additional/worsening domain throughout follow-up. Although most patients had low disease activity at baseline, 60% eventually reached moderately active disease. Younger age at diagnosis [odds ratio (OR) 0.95 (95% CI 0.91, 0.99)], a positive minor salivary gland biopsy [OR 4.08 (95% CI 1.40, 11.86)] and RF [OR 4.67 (95% CI 1.52, 14.33)] were independent predictors of systemic involvement. Patients with baseline constitutional involvement [hazard ratio (HR) 2.23 (95% CI 1.13, 4.40)] and RF [HR 1.89 (95% CI 1.20, 3.00)] were more likely to develop new/worsening systemic disease activity.

Conclusion
Systemic involvement is seen in most SS patients. Younger and RF and salivary gland biopsy-positive patients are at higher risk of systemic disease. Around half of patients with systemic involvement experienced aggravated disease over time, especially those with constitutional involvement or RF.
Unsmoothing Returns of Illiquid Funds
Authors: Couts Spencer J , Gonçalves Andrei S , Rossi Andrea 
Published: March 2024

Abstract
Funds investing in illiquid assets report returns with spurious autocorrelation. Consequently, investors need to unsmooth these funds’ returns when evaluating their risk exposures. We show that funds with similar investments share a common source of spurious autocorrelation not fully resolved by traditional unsmoothing methods and thereby leading to underestimation of systematic risk. Thus, we propose a generalized unsmoothing technique and apply it to hedge funds and private commercial real estate funds. Our method significantly improves the measurement of funds’ risk exposures and risk-adjusted performance, especially for highly illiquid funds. Overall, the average illiquid fund alpha is lower than previously thought. (JEL G11, G12, G23)