cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A depolarizing HI tidal tail in the western lobe of Fornax A
Creators: name: Loi, Francesca
name: Serra, Paolo
name: Murgia, Matteo
name: Govoni, Federica
name: Anderson, Craig
name: Heald, George
name: Kleiner, Dane
name: Lenc, Emil
name: Vacca, Valentina
name: Maccagni, Filippo Marcello
name: Dettmar, Ralf-Jürgen
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recent MeerKAT neutral hydrogen (HI) observations of Fornax A reveal tidal material intersecting in projection the western lobe of this radio galaxy. We found a spatial coincidence between the northern HI tail and a depolarized structure observed for the first time with the Australian Square Kilometre Array Pathfinder (ASKAP) at 1.2 GHz. We analyzed the properties of the rotation measure (RM) image obtained with ASKAP data at the location of the HI tail and in its neighborhood. We modeled the observed RM structure function to investigate the magnetic field power spectrum at the location of the HI tail and in a nearby control region. We found that the observed RM, in the control region and in a region enclosing the HI tail, cannot be due to the intracluster Faraday screen caused by the Fornax cluster. An intragroup magnetized medium with a central magnetic field strength of 18.5 $\rmμ$G can explain the control region RM, but it is clear that there is an excess in correspondence with the HI tail region. We evaluated several scenarios in which the HI tail is either in the lobe foreground or embedded in the lobe. We determined a magnetic field strength on the order of $\sim$9.5$-$11 $μ$G in the HI tail, a value consistent with constraints derived from narrowband H$α$ imaging of the ionized gas. The spatial coincidence between HI tail and depolarization analyzed in this paper could be the first observed evidence of a magnetic field that either has passed through a radio galaxy lobe or has survived the lobe expansion.
description: 11 pages, 9 figures, 1 table, accepted by A&A
The archival discovery of a strong Lyman-$α$ and [CII] emitter at z = 7.677
Creators: name: Valentino, Francesco
name: Brammer, Gabriel
name: Fujimoto, Seiji
name: Heintz, Kasper E.
name: Weaver, John R.
name: Strait, Victoria
name: Gould, Katriona M. L.
name: Mason, Charlotte
name: Watson, Darach
name: Laursen, Peter
name: Toft, Sune
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the archival discovery of Lyman-$α$ emission from the bright ultraviolet galaxy Y002 at $z=7.677$, spectroscopically confirmed by its ionized carbon [CII] 158$μ$m emission line. The Ly$α$ line is spatially associated with the rest-frame UV stellar emission ($M_{\rm UV}$~-22, 2x brighter than $M^\star_{\rm UV}$) and it appears offset from the peak of the extended [CII] emission at the current ~1" spatial resolution. We derive an estimate of the unobscured SFR(UV)=$(22\pm1)\,M_\odot$ yr$^{-1}$ and set an upper limit of SFR(IR)$<15\,M_\odot$ yr$^{-1}$ from the far-infrared wavelength range, which globally place Y002 on the SFR(UV+IR)-L([CII]) correlation observed at lower redshifts. In terms of velocity, the peak of the Ly$α$ emission is redshifted by $Δv$(Ly$α$)~500 km s$^{-1}$ from the systemic redshift set by [CII] and a high-velocity tail extends to up to ~1000 km s$^{-1}$. The velocity offset is up to ~3.5x higher than the average estimate for similarly UV-bright emitters at z~6-7, which might suggest that we are witnessing the merging of two clumps. A combination of strong outflows and the possible presence of an extended ionized bubble surrounding Y002 would likely facilitate the escape of copious Ly$α$ light, as indicated by the large equivalent width EW(Ly$α$)=$24^{+5}_{-6}$ Å. Assuming that [CII] traces the neutral hydrogen, we estimate a HI gas fraction of $M({\rm HI})/M_\star\gtrsim8$ for Y002 as a system and speculate that patches of high HI column densities could contribute to explain the observed spatial offsets between Ly$α$ and [CII] emitting regions. The low dust content, implied by the non-detection of the far-infrared continuum emission at rest-frame ~160 $μ$m, would be sufficient to absorb any potential Ly$α$ photons produced within the [CII] clump as a result of large HI column densities.
description: 10 pages, 4 figures. Accepted for publication in The Astrophysical Journal Letters
Unveiling an old disk around a massive young leaking blueberry in SDSS-IV MaNGA
Creators: name: Paswan, Abhishek
name: Saha, Kanak
name: Borgohain, Anshuman
name: Leitherer, Claus
name: Dhiwar, Suraj
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Extreme emission-line galaxies, such as blue compact dwarfs (BCDs), Green Peas (GPs) and blueberries in the local Universe are the potential candidates to understand the nature of galaxies that re-ionized the early Universe. Being low-mass, metal-poor starburst systems they are understood as local analogs of the high redshift Lyman Continuum (LyC) and Lyman-$α$ emitters (LAEs). Even with their proximity to us, we know little about their spatially resolved properties, most of the blueberries and GPs are indeed compact, remain unresolved. Here, we report the detection of a disk-like lower-surface brightness (LSB) stellar host with very old population around a blueberry LAE system using broad i-band imaging and integral field spectroscopic data from SDSS and SDSS-IV MaNGA surveys, respectively. The LSB stellar host is structurally similar to that observed around15 local starburst BCDs. Furthermore, the kinematics of the studied blueberry source bear sign of misalignment between the gas and stellar components. Our findings establish an intriguing thread connecting the blueberry and an LSB disk with old stellar population, and suggest that blueberries and their high redshift counterparts such as GPs do not represent peculiar cases of dwarf galaxy evolution. In fact, with respect to the structural properties of their host galaxies, they are compatible with a common evolutionary track of the main population of local BCDs.
description: Accepted for publication in ApJ
Very high--order discontinuous Galerkin method
Creators: name: Jaskowiec, Jan
Publisher: name: figshare
Year: 2016
Subjects: subject: 91502 Computational Heat Transfer
subject: FOS: Other engineering and technologies
subject: 10301 Numerical Analysis
subject: FOS: Mathematics

description: The paper deals with high-order discontinuous Galerkin (DG) method with the approximation order that exceeds 20 and reaches 100 and even 1000 with respect to one-dimensional case. To achieve such a high order solution, the DG method with finite difference (DGFD) method has to be applied. The basis functions of this method are high-order orthogonal polynomials such as Legendre or Chebyshev polynomials. These polynomials are defined in one-dimensional space (1D), but they can be easily adapted to two-diemnsional space (2D) just by cross products. There are no nodes in the elements and the degrees of freedom are just coefficients of linear combination of basis functions. In this sort of analysis the reference elements are needed, so the transformations of the reference element into the real one are needed as well as the transformations connected with the mesh skeleton. Due to orthogonality of the basis functions, the obtained matrices are sparse even for finite elements with more than thousands degrees of freedom. In consequence, the truncation errors are limited and very high-order analysis can be performed. The paper is illustrated with a set of benchmark examples of 1D and 2D for the elliptic problem.
COSMOS2020: Ubiquitous AGN Activity of Massive Quiescent Galaxies at $0
Creators: name: Ito, Kei
name: Tanaka, Masayuki
name: Miyaji, Takamitsu
name: Ilbert, Olivier
name: Kauffmann, Olivier B.
name: Koekemoer, Anton M.
name: Marchesi, Stefano
name: Shuntov, Marko
name: Toft, Sune
name: Valentino, Francesco
name: Weaver, John R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We characterize the average X-ray and radio properties of quiescent galaxies (QGs) with $\log{(M_\star/M_\odot)}>10$ at $01.5$ is higher than that of star-forming galaxies (SFGs), derived in the same manner as QGs. The stacking analysis of the VLA-COSMOS images is conducted for the identical sample, and the radio signal for QGs is also detected up to $z\sim5$. We find that the radio AGN luminosity of QGs at $z>1.5$ is also higher than SFGs, which is in good agreement with the X-ray analysis. The enhanced AGN activity in QGs suggested by the individual analysis in the X-ray and radio wavelength supports its important role for quenching at high redshift. Their enhanced AGN activity is less obvious at $z<1.5$, which can be interpreted as an increasing role of others at lower redshifts, such as environmental quenching.
description: 24 pages, 20 figures, 2 tables, Accepted for publication in ApJ
Digging into the Interior of Hot Cores with ALMA (DIHCA). II. Exploring the Inner Binary (Multiple) System Embedded in G335 MM1 ALMA1
Creators: name: Olguin, Fernando A.
name: Sanhueza, Patricio
name: Ginsburg, Adam
name: Chen, Huei-Ru Vivien
name: Zhang, Qizhou
name: Li, Shanghuo
name: Lu, Xing
name: Sakai, Takeshi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We observed the high-mass protostellar core G335.579-0.272 ALMA1 at ${\sim}200$ au (0.05") resolution with the Atacama Large Millimeter/submillimeter Array (ALMA) at 226 GHz (with a mass sensitivity of $5σ=0.2$ M$_\odot$ at 10 K). We discovered that at least a binary system is forming inside this region, with an additional nearby bow-like structure (${\lesssim}1000$ au) that could add an additional member to the stellar system. These three sources are located at the center of the gravitational potential well of the ALMA1 region and the larger MM1 cluster. The emission from CH$_3$OH (and many other tracers) is extended ($>1000$ au), revealing a common envelope toward the binary system. We use CH$_2$CHCN line emission to estimate an inclination angle of the rotation axis of $26^\circ$ with respect to the line of sight based on geometric assumptions and derive a kinematic mass of the primary source (protostar+disk) of 3.0 M$_\odot$ within a radius of 230 au. Using SiO emission, we find that the primary source drives the large scale outflow revealed by previous observations. Precession of the binary system likely produces a change in orientation between the outflow at small scales observed here and large scales observed in previous works. The bow structure may have originated by entrainment of matter into the envelope due to widening or precession of the outflow, or, alternatively, an accretion streamer dominated by the gravity of the central sources. An additional third source, forming due to instabilities in the streamer, cannot be ruled out as a temperature gradient is needed to produce the observed absorption spectra.
description: 23 pages, 16 figures, 4 tables, 2 appendices. Accepted for publication in ApJ
Use of an inside buffer method to extract the extent of urban areas from DMSP/OLS nighttime light data in North China
Creators: name: Minghong Tan
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Inorganic Chemistry
subject: Plant Biology

description: Defense Meteorological Satellite Program (DMSP)/Operational Linescan System (OLS) nighttime imagery provides a valuable data source for mapping urban areas. However, the spatial extents of large cities are often overestimated because of the effect of over-glow from nighttime light if a fixed thresholding technique is used. In the work reported here, an inside buffer method was developed to solve this issue. The method is based on the fact that the area overestimated is proportional to the extent of the lit area if a fixed threshold is used to extract urban areas in a region/county. Using this method, the extents of urban areas in North China were extracted and validated by interpretations from Landsat Thematic Mapper images. The results showed that the lit areas had a significant linear relationship with the urban areas for 120 representative cities in North China in 2000, with an R2 value of over 0.95. This demonstrates that the inside buffer method can be used to extract urban areas. The validation results showed that the inside buffer model developed in 2000 can be directly used to extract the extent of urban areas using more recent nighttime light imagery. This is of great value for the timely updating of urban area databases in large regions or countries.
Non-ideal fields solve the injection problem in relativistic reconnection
Creators: name: Sironi, Lorenzo
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Magnetic reconnection in relativistic plasmas is well established as a fast and efficient particle accelerator, capable of explaining the most dramatic astrophysical flares. With particle-in-cell simulations, we demonstrate the importance of non-ideal fields for the early stages ("injection") of particle acceleration. Most of the particles ending up with high energies (near or above the mean magnetic energy per particle) must have passed through non-ideal regions where the assumptions of ideal magnetohydrodynamics are broken (i.e., regions with $E>B$ or nonzero $E_\parallel={\bf E}\cdot {\bf B}/B$), whereas particles that do not experience non-ideal fields end up with Lorentz factors of order unity. Thus, injection by non-ideal fields is a necessary prerequisite for further acceleration. Our results have important implications for the origin of nonthermal particles in high-energy astrophysical sources.
The Economic Impact for Farm Injury in Minnesota, 2004–2010
Creators: name: Landsteiner, Adrienne M. K.
name: McGovern, Patricia M.
name: Nyman, John A.
name: Alexander, Bruce H.
name: Lindgren, Paula G.
name: Williams, Allan N.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy

description: Only 2% of Minnesota’s employed population worked in agriculture between the years 2005 and 2012. However, this small portion of the state’s employed population accounted for 31% of total work-related deaths in the state during that same time period. During a similar time period, 2007–2013, the contribution of agriculture to Minnesota’s gross domestic product increased from approximately 1.5% to about 2.3%. This article describes the economic impact of injuries related to farm work between the years 2004 and 2010. Using hospital discharge data and the Census of Fatal Occupational Injuries (CFOI), estimates of the number of injuries and fatalities related to agricultural work were compiled. A cost of illness model was applied to these injury and fatality estimates to calculate the related indirect and direct costs in 2010 dollars. Estimated total costs, in 2010 dollars, ranged between $21 and $31 million annually over the 7-year study period. The majority of the costs were attributable to indirect costs, such as lost productivity at work and home. Fatal injuries accrued the largest proportion of the estimated costs followed by hospitalized and nonhospitalized injuries. A sensitivity analysis was performed to evaluate the impact each selected data source had upon the cost estimate. The magnitude of the costs associated with these injuries argues for better surveillance of injury related to agriculture to prioritize resources and evaluate intervention and prevention programs.
Controlling the volume fraction of glass-forming colloidal suspensions using thermosensitive host `mesogels'
Creators: name: Behra, J. S.
name: Thiriez, A.
name: Truzzolillo, D.
name: Ramos, L.
name: Cipelletti, L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The key parameter controlling the glass transition of colloidal suspensions is $φ$, the fraction of the sample volume occupied by the particles. Unfortunately, changing $φ$ by varying an external parameter, \textit{e.g.} temperature $T$ as in molecular glass formers, is not possible, unless one uses thermosensitive colloidal particles, like the popular poly(N-isopropylacrylamide) (PNiPAM) microgels. These however have several drawbacks, including high deformability, osmotic deswelling and interpenetration, which complicate their use as a model system to study the colloidal glass transition. Here, we propose a new system consisting of a colloidal suspension of non-deformable spherical silica nanoparticles, in which PNiPAM hydrogel spheres of ~$100-200 μm$ size are suspended. These non-colloidal `mesogels' allow for controlling the sample volume effectively available to the silica nanoparticles and hence their $φ$, thanks to the $T$-induced change in mesogels volume. Using optical microscopy, we first show that the mesogels retain their ability to change size with $T$ when suspended in Ludox suspensions, similarly as in water. We then show that their size is independent of the sample thermal history, such that a well-defined, reversible relationship between $T$ and $φ$ may be established. Finally, we use space-resolved dynamic light scattering to demonstrate that, upon varying $T$, our system exhibits a broad range of dynamical behaviors across the glass transition and beyond, comparable with those exhibited by a series of distinct silica nanoparticle suspensions of various $φ$.
description: The following article has been accepted by The Journal of Chemical Physics. After it is published, it will be found at https://publishing.aip.org/resources/librarians/products/journals/ Copyright (2022) J.S. Behra, A. Thiriez, D. Truzzolillo, L. Ramos, L. Cipelletti. This article is distributed under a Creative Commons Attribution (CC BY) License
High-density disc reflection spectroscopy of low-mass active galactic nuclei
Creators: name: Mallick, L.
name: Fabian, A. C.
name: García, J. A.
name: Tomsick, J. A.
name: Parker, M. L.
name: Dauser, T.
name: Wilkins, D. R.
name: De Marco, B.
name: Steiner, J. F.
name: Connors, R. M. T.
name: Mastroserio, G.
name: Markowitz, A. G.
name: Pinto, C.
name: Alston, W. N.
name: Lohfink, A. M.
name: Gandhi, P.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The standard alpha-disc model predicts an anti-correlation between the density of the inner accretion disc and the black hole mass times square of the accretion rate, as seen in higher mass ($M_{\rm BH}>10^{6} M_{\odot}$) active galactic nuclei (AGNs). In this work, we test the predictions of the alpha-disc model and study the properties of the inner accretion flow for the low-mass end ($M_{\rm BH}\approx 10^{5-6}M_{\odot}$) of AGNs. We utilize a new high-density disc reflection model where the density parameter varies from $n_{\rm e}=10^{15}$ to $10^{20}$ cm$^{-3}$ and apply it to the broadband X-ray (0.3-10 keV) spectra of the low-mass AGN sample. The sources span a wide range of Eddington fractions and are consistent with being sub-Eddington or near-Eddington. The X-ray spectra reveal a soft X-ray excess below $\sim 1.5$ keV which is well modeled by high-density reflection from an ionized accretion disc of density $n_{\rm e}\sim 10^{18}$ cm$^{-3}$ on average. The results suggest a radiation pressure-dominated disc with an average of 70% fraction of the disc power transferred to the corona, consistent with that observed in higher mass AGNs. We show that the disc density higher than $10^{15}$ cm$^{-3}$ can result from the radiation pressure compression when the disc surface does not hold a strong magnetic pressure gradient. We find tentative evidence for a drop in black hole spin at low-mass regimes.
description: 20 pages, 10 figures, 6 tables. Accepted for publication in MNRAS
Simple analytic formula relating the mass and spin of accreting compact objects to their rapid X-ray variability
Creators: name: Török, Gabriel
name: Kotrlová, Andrea
name: Matuszková, Monika
name: Klimovičová, Kateřina
name: Lančová, Debora
name: Urbancová, Gabriela
name: Šrámková, Eva
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Following the previous research on epicyclic oscillations of accretion disks around black holes (BHs) and neutron stars (NSs), a new model of high-frequency quasi-periodic oscillations (QPOs) has been proposed (CT model), which deals with oscillations of fluid in marginally overflowing accretion tori (i.e., tori terminated by cusps). According to preliminary investigations, the model provides better fits of the NS QPO data compared to the relativistic precession (RP) model. It also implies a significantly higher upper limit on the Galactic microquasars BH spin. A short analytic formula has been noticed to well reproduce the model's predictions on the QPO frequencies in Schwarzschild spacetimes. Here we derive an extended version of this formula that applies to rotating compact objects. We start with the consideration of Kerr spacetimes and derive a formula that is not restricted to a particular specific angular momentum distribution of the inner accretion flow, such as Keplerian or constant. Finally, we consider Hartle-Thorne spacetimes and include corrections implied by the NS oblateness. For a particular choice of a single parameter, our relation provides frequencies predicted by the CT model. For another value, it provides frequencies predicted by the RP model. We conclude that the formula is well applicable for rotating oblateness NSs and both models. We briefly illustrate application of our simple formula on several NS sources and confirm the expectation that the CT model is compatible with realistic values of the NS mass and provides better fits of data than the RP model.
description: 9 pages, 5 figures, accepted for publication in The Astrophysical Journal
Modelling Quintessential Inflation in Palatini Modified Gravity
Creators: name: Dimopoulos, Konstantinos
name: Karam, Alexandros
name: López, Samuel Sánchez
name: Tomberg, Eemeli
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a model of quintessential inflation constructed in $R^2$ modified gravity with a non-minimally coupled scalar field, in the Palatini formalism. Our non-minimal inflaton field is characterised by a simple exponential potential. We find that successful quintessential inflation can be achieved with no fine-tuning on the model parameters. Predictions on the characteristics of dark energy will be tested by observations in the near future, while contrast with existing observations provides insights on the modified gravity background, such as the value of the non-minimal coupling and its running.
description: 20 pages, 7 figures, 1 table; published version
On the Einstein relation between mobility and diffusion coefficient in an active bath
Creators: name: Solon, Alexandre
name: Horowitz, Jordan M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: An active bath, made of self-propelling units, is a nonequilibrium medium in which the Einstein relation $D=μk_B T$ between the mobility $μ$ and the diffusivity $D$ of a tracer particle cannot be expected to hold a priori. We consider here heavy tracers for which these coefficients can be related to correlation functions which we estimate. We show that, to a good approximation, an Einstein relation does hold in an active bath upon using a different temperature which is defined mechanically, through the pressure exerted on the tracer.
Understanding the Nature of an Unusual Post-Starburst Quasar with Exceptionally Strong Ne V Emission
Creators: name: Swiggum, Cameren
name: Tremonti, Christy
name: Perrotta, Serena
name: Schaefer, Adam
name: Hickox, Ryan
name: Coil, Alison
name: Sell, Paul
name: Diamond-Stanic, Aleksandar
name: Krause, Jalyn
name: Mosby, Gregory
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a $z = 0.94$ quasar, SDSS J004846.45-004611.9, discovered in the SDSS-III BOSS survey. A visual analysis of this spectrum reveals highly broadened and blueshifted narrow emission lines, in particular [Ne~V]$\lambda3426$ and [O~III]$\lambda5007$, with outflow velocities of 4000 km s$^{-1}$, along with unusually large [Ne V]$\lambda3426$/[Ne III]$\lambda3869$ ratios. The gas shows higher ionization at higher outflow velocities, indicating a connection between the powerful outflow and the unusual strength of the high ionization lines. The SED and the $i - \text{W3}$ color of the source reveal that it is likely a "core" Extremely Red Quasar (core ERQ); a candidate population of young AGN that are violently "blowing out" gas and dust from their centers. The dominance of host galaxy light in its spectrum and its fortuitous position in the SDSS S82 region allows us to measure its star formation history and investigate for variability for the first time in an ERQ. Our analysis indicates that SDSS J004846.45-004611.9 underwent a short-lived starburst phase 400 Myr ago and was subsequently quenched, possibly indicating a time-lag between star formation quenching and the onset of AGN activity. We also find that the strong extinction can be uniquely attributed to the AGN and does not persist in the host galaxy, contradicting a scenario where the source has recently transitioned from being a dusty sub-mm galaxy. In our relatively shallow photometric data, the source does not appear to be variable at $0.24-2.4~μ$m in the restframe, most likely due to the dominant contribution of host galaxy starlight at these wavelengths.
description: 23 pages, 8 figures, accepted for publication in ApJ
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Creators: name: Pila Angulor
Publisher: name: figshare
Year: 2016
Subjects: subject: 160304 Mortality
subject: FOS: Sociology

description: Iniciando un estudio sobre el mundo del disfraz y festividades. Como la sociedad cambia, actua e interpreta un día festivo como el día de los muertos, sí halloween. Esa festividad de nacimiento Estado Unidos que cada año que pasa cala con mayor fuerza en nuestra sociedad y costumbres. Con estos disfraces de Halloween estamos alterando la cotidianidad de nuestras vidas para darle importancia a la oscura muerte.

Mi trabajo actualmente sigue este camino y pretendo realizar pruebas y análisis en la conducta de las personas en ciertas festividades. Poco a poco iré compartiendo conclusiones y documentación al respecto.
Heterogene Diskurslandschaften im Spiegel der Sozialen Netzwerkanalyse - Ein Werkstattbericht
Creators: name: Schneider, Philipp
Publisher: name: Zenodo
Year: 2020
Subjects: Digital Humanities
Soziale Netzwerkanalyse
Aufgeklärte Gesellschaft

description: Vortrag im Rahmen des Arbeitskreises Digital Humanities an der WWU Münster.
Superconducting dome associated with the suppression and re-emergence of charge density wave states upon sulfur substitution in CuIr2Te4 chalcogenides
Creators: name: Boubeche, Mebrouka
name: Wang, Ningning
name: Sun, Jianping
name: Yang, Pengtao
name: Zeng, Lingyong
name: Luo, Shaojuan
name: He, Yiyi
name: Yu, Jia
name: Wang, Meng
name: Cheng, Jinguang
name: Luo, Huixia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the path from the charge density wave (CDW)-bearing superconductor CuIr2Te4 to the metal insulator transition (MIT)-bearing compound CuIr2S4 by chemical alloying with the gradual substitution of S for Te. The evolution of structural and physical properties of the CuIr2Te4-xSx polycrystalline system with the doping range from 0 to 4 is systemically examined. The X-ray diffraction (XRD) results imply CuIr2Te4-xSx in the range between 0 and 0.5 crystallizes in a NiAs defected trigonal structure, whereas it adapts to the cubic spinel structure in the doping range from 3.6 to 4 and it is a mixed phase in the doping range from 0.5 to 3.6. Unexpectedly, the resistivity and magnetization measurements reveal that small-concentration S substitution for Te can suppress the CDW transition, but it reappears around x = 0.2, and the CDW transition temperature enhances clearly as x augments in the range from 0.2 to 0.5. Besides, the superconducting critical temperature (Tc) first increases with S doping content and then decreases after reaching a maximum Tc = 2.82 K for CuIr2Te3.85S0.15. MIT order has been observed in the spinel region from 3.6 to 4 associated with TMI increasing with x increasing. Finally, the rich electronic phase diagram of temperature versus x for this CuIr2Te4-xSx system is assembled, where the superconducting dome is associated with the suppression and re-emergence of CDW as well as MIT states at the end upon sulfur substitution in the CuIr2Te4-xSx chalcogenides.
description: 33 pages, 8 figures, 4 tables; The manuscript with the same title will be published by JOURNAL OF PHYSICS-CONDENSED MATTER
Dangling bonds on the Cl- and Br-terminated Si(100) surfaces
Creators: name: Pavlova, T. V.
name: Shevlyuga, V. M.
name: Andryushechkin, B. V.
name: Eltsov, K. N.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Halogen monolayer on a silicon surface is attracting active attention for applications in electronic device fabrication with individual impurities. To create a halogen mask for the impurities incorporation, it is desirable to be able to remove a single halogen atom from the surface. We report the desorption of individual halogen atoms from the Si(100)-2x1-Cl and -Br surfaces in a scanning tunneling microscope (STM). Silicon dangling bonds (DBs) formed on the Si surface after halogen desorption were investigated using STM and the density functional theory. Three charge states: positive, neutral, and negative were identified. Our results show that the charge states of DBs can be manipulated, which will allow to locally tune the reactivity of the Cl- and Br-terminated Si(100) surfaces.
description: 8 pages, 5 figures
Map-aided annotation for pole base detection
Creators: name: Missaoui, Benjamin
name: Noizet, Maxime
name: Xu, Philippe
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: For autonomous navigation, high definition maps are a widely used source of information. Pole-like features encoded in HD maps such as traffic signs, traffic lights or street lights can be used as landmarks for localization. For this purpose, they first need to be detected by the vehicle using its embedded sensors. While geometric models can be used to process 3D point clouds retrieved by lidar sensors, modern image-based approaches rely on deep neural network and therefore heavily depend on annotated training data. In this paper, a 2D HD map is used to automatically annotate pole-like features in images. In the absence of height information, the map features are represented as pole bases at the ground level. We show how an additional lidar sensor can be used to filter out occluded features and refine the ground projection. We also demonstrate how an object detector can be trained to detect a pole base. To evaluate our methodology, it is first validated with data manually annotated from semantic segmentation and then compared to our own automatically generated annotated data recorded in the city of Compi{è}gne, France. Erratum: In the original version [1], an error occurred in the accuracy evaluation of the different models studied and the evaluation method applied on the detection results was not clearly defined. In this revision, we offer a rectification to this segment, presenting updated results, especially in terms of Mean Absolute Errors (MAE).
Electrochemical 3D Printing of Ni-Mn and Ni-Co alloy with FluidFM
Creators: name: Shen, Chunjian
name: Zhu, Zengwei
name: Zhu, Di
name: van Nisselroy, Cathelijn
name: Zambelli, Tomaso
name: Momotenko, Dmitry
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Additive manufacturing can realize almost any designed geometry, enabling the fabrication of innovative products for advanced applications. Local electrochemical plating is a powerful approach for additive manufacturing of metal microstructures; however, previously reported data have been mostly obtained with copper, and only a few cases have been reported with other elements. In this study, we assessed the ability of fluidic force microscopy (FluidFM) to produce Ni-Mn and Ni-Co alloy structures. Once the optimal deposition potential window was determined, pillars with relatively smooth surfaces were obtained. The printing process was characterized by printing rates in the range of 50-60 nm/s. Cross-sections exposed by focused ion beam showed highly dense microstructures, while the corresponding face scan with energy-dispersive X-ray spectroscopy (EDX) spectra revealed a uniform distribution of alloy components.
The Economic Impact for Farm Injury in Minnesota, 2004 - 2010
Creators: name: Landsteiner, Adrienne M.K.
name: McGovern, Patricia M.
name: Nyman, John A.
name: Alexander, Bruce H.
name: Lindgren, Paula G.
name: Williams, Allan N.
Publisher: name: Taylor & Francis
Year: 2016
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy

description: Only 2% of Minnesota’s employed population worked in agriculture between the years 2005–2012. However, this small portion of the state’s employed population accounted for 31% of total work related deaths in the state during that same time period. During a similar time period, 2007–2013, the contribution of agriculture to Minnesota’s Gross Domestic Product increased from approximately 1.5% to about 2.3%.This paper describes the economic impact of injuries related to farm work between the years 2004–2010. Using hospital discharge data and the Census of Fatal Occupational Injuries (CFOI) estimates of the number of injuries and fatalities related to agricultural work were compiled. A cost of illness model was applied to these injury and fatality estimates to calculate the related indirect and direct costs in 2010 dollars. Estimated total costs, in 2010 dollars, ranged between $21 and $31 million annually over the seven year study period. The majority of the costs were attributable to indirect costs, such as lost productivity at work and home. Fatal injuries accrued the largest proportion of the estimated costs followed by hospitalized and non-hospitalized injuries. A sensitivity analysis was performed to evaluate the impact each selected data source had upon the cost estimate. The magnitude of the costs associated with these injuries argues for better surveillance of injury related to agriculture to prioritize resources and evaluate intervention and prevention programs.
Seismogenic Potential of the Subduction Zone in Northern Chile
Creators: name: Michel, Sylvain
name: Jolivet, Romain
name: Jara, Jorge
name: Rollins, Chris
Publisher: name: arXiv
Year: 2024
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: The northern Chile region of the Nazca subduction zone ruptured in an Mw$\sim$8.5--9.0 earthquake in 1877, which induced a tsunami. The various magnitude estimates of this event are based on the evaluation of historical records, seismic intensities, and/or tide gauge information; however, its actual along-strike extent is debated. Based on geodetic data, the previous studies have suggested that this region has the potential for an Mw8.2--8.8 event. We re-evaluate the seismic potential of the region, accounting for the buildup rate of moment deficit along the megathrust, the earthquake magnitude--frequency distribution, and the physics of earthquakes. We combine an improved probabilistic estimate of moment deficit rate with results from dynamic models of the earthquake cycle, testing, in particular, the influence of a potential aseismic barrier near the city of Iquique, which may influence the extent and magnitude of large events in this region. We find that Mw8.8 is the most probable maximum magnitude earthquake in the region, and that the potential barrier likely has a limited impact considering uncertainties. We discuss the effect of the moment deficit rate on the fault, the b-value, and the importance of postseismic processes on our results.
The VVV survey: Long-period variable stars I. Photometric catalog of ten VVV/OGLE tiles
Creators: name: Nikzat, F.
name: Lopes, C. E. Ferreira
name: Catelan, M.
name: Ramos, R. Contreras
name: Zoccali, M.
name: Rojas-Arriagada, A.
name: Braga, V. F.
name: Minniti, D.
name: Borissova, J.
name: Becker, I.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Long-period variable stars (LPVs) are pulsating red giants, primarily in the asymptotic giant branch phase, and they include both Miras and semi-regular variables (SRVs). Their period-age and period-luminosity relations enable us to trace different stellar populations, as they are intrinsically very bright and cover a wide range in distances and ages. The purpose of this study is to establish a census of LPV stars in a region close to the Galactic center, using the six-year database of the Vista Variables in the Vía Láctea (VVV) ESO Public Survey, as well as to describe the methodology that was employed to search for and characterize LPVs using VVV data. Near-IR surveys such as VVV provide a unique opportunity to probe the high-extinction innermost regions of the Milky Way. The detection and analysis of the intrinsically bright Miras in this region could provide us with an excellent probe of the properties of the Milky Way far behind its bulge. We used point-spread function photometry for all available $K_{s}$-band images in ten VVV tiles, covering $16.4~°^2$ in total, overlapping fields observed in the course of the Optical Gravitational Lensing Experiment (OGLE)-III survey. We designed a method to select LPV candidates, and we used the known variables from OGLE-III and other known variables from the literature to test our approach. The reduced $χ^2$ statistic, along with the flux-independent index $K_{(fi)}$, were used in our analysis. The Lomb-Scargle period search method, Fourier analysis, template fitting, and visual inspection were then performed to refine our sample and characterize the properties of the stars included in our catalog. A final sample of 130 Mira candidates, of which 129 are new discoveries, was thus obtained, with periods in the range between about 80 and 1400~days.
I DPID It My Way! A Covert Timing Channel in Software-Defined Networks
Creators: name: Krösche, Robert
name: Thimmaraju, Kashyap
name: Schiff, Liron
name: Schmid, Stefan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Software-defined networking is considered a promising new paradigm, enabling more reliable and formally verifiable communication networks. However, this paper shows that the separation of the control plane from the data plane, which lies at the heart of Software-Defined Networks (SDNs), can be exploited for covert channels based on SDN Teleportation, even when the data planes are physically disconnected.
 This paper describes the theoretical model and design of our covert timing channel based on SDN Teleportation. We implement our covert channel using a popular SDN switch, Open vSwitch, and a popular SDN controller, ONOS. Our evaluation of the prototype shows that even under load at the controller, throughput rates of 20 bits per second are possible, with a communication accuracy of approximately 90\%. We also discuss techniques to increase the throughput further.
A regular non-weakly discretely generated P-space
Creators: name: Spadaro, Santi
name: Szeptycki, Paul
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: Primary: 54A25 Secondary: 54G10

description: We construct a consistent example of a topological space $Y=X \cup \{\infty\}$ such that:
 1) $Y$ is regular.
 2) Every $G_δ$ subset of $Y$ is open.
 3) The point $\infty$ is not isolated, but it is not in the closure of any discrete subset of $X$.
La Vinchuca (Timbuku)
Creators: name: Lardeux, Frederic
name: Torrez, Libia
name: Buhezo, Wendy
Publisher: name: Laboratorio de Entomologia Medica, Universidad Mayor de San Simon, Bolivia
Year: 2021
Subjects: Chagas
TRiatoma infestans
Bolivia
Chaco
CHAGLAG

description: Poster réalisé  dans le cadre du programme de recherche CHAGLAG « “Estudio piloto de la enfermedad de Chagas en comunidades Guaraníes de Lagunillas” (2018-2021), réalisé par l’ IRD (Institut de Recherche pour le Développement, Cooperación de Francia) et le Laboratorio de Entomología Médica de la UMSS (Universidad Mayor de San Simon, Cochabamba, Bolivia) ; financé par l’IRD (Institut de Recherche pour le Développement, Cooperación de Francia), TOTAL E&P Bolivia (TOTAL Energies) et la CAF-Bolivia (Banco de Desarrollo de América Latina, Corporación Andina de Fomento).

Le poster est à destination des villageois, habitants des villages ruraux du Chaco Boliviano et a servi de matériel didactique à des "férias de salud" (foires de la santé) dans la zone du projet CHAGLAG (zone de Lagunillas, Chaco Boliviano), en 2021
Revisiting BD-06 1339b: A Likely False Positive Caused by Stellar Activity
Creators: name: Simpson, Emilie
name: Fetherolf, Tara
name: Kane, Stephen R.
name: Li, Zhexing
name: Pepper, Joshua
name: Mocnik, Teo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: As long as astronomers have searched for exoplanets, the intrinsic variability of host stars has interfered with the ability to reliably detect and confirm exoplanets. One particular source of false positives is the presence of stellar magnetic or chromospheric activity that can mimic the radial-velocity reflex motion of a planet. Here we present the results of a photometric data analysis for the known planet hosting star, BD-06 1339, observed by the Transiting Exoplanet Survey Satellite (TESS) during Sector 6 at 2 minute cadence. We discuss evidence that suggests the observed 3.9 day periodic radial velocity signature may be caused by stellar activity rather than a planetary companion, since variability detected in the photometric data are consistent with the periodic signal. We conclude that the previously reported planetary signature is likely the result of a false positive signal resulting from stellar activity, and discuss the need for more data to confirm this conclusion.
description: 9 pages, 3 figures, accepted to The Astronomical Journal
Mass loss by atmospheric escape from extremely close-in planets
Creators: name: Koskinen, Tommi
name: Lavvas, Panayotis
name: Huang, Chenliang
name: Bergsten, Galen
name: Fernandes, Rachel
name: Young, Mitchell
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We explore atmospheric escape from close-in exoplanets with the highest mass loss rates. First, we locate the transition from stellar X-ray and UV-driven escape to rapid Roche lobe overflow, which occurs once the 10-100 nbar pressure level in the atmosphere reaches the Roche lobe. Planets enter this regime when the ratio of the substellar radius to the polar radius along the visible surface pressure level, that aligns with a surface of constant Roche potential, is X/Z~$\gtrsim$~1.2 for Jovian planets (Mp~$\gtrsim$~100 M$_{\Earth}$) and X/Z~$\gtrsim$~1.02 for sub-Jovian planets ($M_p \approx$~10--100 M$_{\Earth}$). Around a sun-like star, this regime applies to orbital periods of less than two days for planets with radii of about 3--14 R$_{\Earth}$. Our results agree with the properties of known transiting planets and can explain parts of the sub-Jovian desert in the population of known exoplanets. Second, we present detailed numerical simulations of atmospheric escape from a planet like Uranus or Neptune orbiting close to a sun-like star that support the results above and point to interesting qualitative differences between hot Jupiters and sub-Jovian planets. We find that hot Neptunes with solar metallicity hydrogen and helium envelopes have relatively more extended upper atmospheres than typical hot Jupiters, with a lower ionization fraction and higher abundances of escaping molecules. This is consistent with existing ultraviolet transit observations of warm Neptunes and it might provide a way to use future observations and models to distinguish solar metallicity atmospheres from higher metallicity atmospheres.
description: Accepted to Astrophysical Journal