bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hydrodynamics of Circumbinary Accretion: Angular Momentum Transfer and Binary Orbital Evolution
Authors: Muñoz Diego J. , Miranda Ryan , Lai Dong 
Published: January 2019

Abstract
We carry out 2D viscous hydrodynamical simulations of circumbinary accretion using the moving-mesh code AREPO. We self-consistently compute the accretion flow over a wide range of spatial scales, from the circumbinary disk (CBD) far from the central binary, through accretion streamers, to the disks around individual binary components, resolving the flow down to 2% of the binary separation. We focus on equal-mass binaries with arbitrary eccentricities. We evolve the flow over long (viscous) timescales until a quasi-steady state is reached, in which the mass supply rate at large distances

(assumed constant) equals the time-averaged mass transfer rate across the disk and the total mass accretion rate onto the binary components. This quasi-steady state allows us to compute the secular angular momentum transfer rate onto the binary,

, and the resulting orbital evolution. Through direct computation of the gravitational and accretional torques on the binary, we find that

is consistently positive (i.e., the binary gains angular momentum), with

in the range of

, depending on the binary eccentricity (where

are the binary semimajor axis and angular frequency); we also find that this

is equal to the net angular momentum current across the CBD, indicating that global angular momentum balance is achieved in our simulations. In addition, we compute the time-averaged rate of change of the binary orbital energy for eccentric binaries and thus obtain the secular rates

and

. In all cases,

is positive; that is, the binary expands while accreting. We discuss the implications of our results for the merger of supermassive binary black holes and for the formation of close stellar binaries.
Deciphering the Large-scale Environment of Radio Galaxies in the Local Universe: Where Are They Born? Where Do They Grow? Where Do They Die?
Authors: Massaro F. , Álvarez-Crespo N. , Capetti A. , Baldi R. D. , Pillitteri I. , Campana R. , Paggi A. 
Published: January 2019

Abstract
The role played by the large-scale environment in the nuclear activity of radio galaxies (RGs) is still not completely understood. Accretion mode, jet power, and galaxy evolution are connected with their large-scale environment on scales from tens to hundreds of kiloparsecs. Here we present a detailed statistical analysis of the large-scale environment for two samples of RGs up to redshifts z
src = 0.15. The main advantages of our study over studies in the literature are the extremely homogeneous selection criteria of the catalogs adopted to perform our investigation. This is also coupled with the use of several clustering algorithms. We performed a direct search of galaxy-rich environments around RGs by using them as beacons. To perform this study we also developed a new method that does not appear to suffer from a strong z
src dependence as other algorithms do. We conclude that, despite their radio morphological classification (FR I versus FR II) and/or their optical classification (high- or low-excitation radio galaxy (HERG or LERG)), RGs in the local universe tend to live in galaxy-rich large-scale environments that have similar characteristics and richness. We highlight that the fraction of FR I LERGs inhabiting galaxy-rich environments appears to be larger than that of FR II LERGs. We also found that five out of seven FR II HERGs, with z
src ≤ 0.11, lie in groups/clusters of galaxies. However, we recognize that, despite the high level of completeness of our catalogs, when restricting to the local universe, the low number of HERGs (∼10% of the total FR IIs investigated) prevents us drawing a strong statistical conclusion about this source class.
CO Outflow Survey of 68 Very Low Luminosity Objects: A Search for Proto-brown-dwarf Candidates
Authors: Kim Gwanjeong , Won Lee Chang , Maheswar Gopinathan , Kim Mi-Ryang , Soam Archana , Saito Masao , Kiyokane Kazuhiro , Kim Sungeun 
Published: January 2019

Abstract
We present the results of a systematic search for molecular outflows in 68 Very Low Luminosity Objects (VeLLOs) from single-dish observations in CO isotopologues, finding 16 VeLLOs that show clear outflow signatures in the CO maps. Together with an additional three VeLLOs from the literature, we analyzed the outflow properties for these 19 VeLLOs, identifying 15 VeLLOs as proto-brown-dwarf (proto-BD) candidates and 4 VeLLOs as likely faint protostar candidates. The proto-BD candidates are found to have a mass accretion rate (∼10−8–10−7
M
⊙ yr−1) lower than that of the protostar candidates (≳10−6
M
⊙ yr−1). Their accretion luminosities are similar to or smaller than their internal luminosities, implying that many proto-BD candidates might have had either small accretion activity in a quiescent manner throughout their lifetimes, or be currently exhibiting relatively higher (or episodic) mass accretion than in the past. Outflows of many proto-BDs show strong trends of being less active if they are fainter or have less massive envelopes. The outflow forces and internal luminosities for more than half of the proto-BD candidates seem to follow the evolutionary track of a protostar with an initial envelope mass of ∼0.08 M
⊙, indicating that some BDs may form in less massive dense cores in a similar way to normal stars. But, because there also exists a significant fraction (about 40%) of proto-BDs with a much weaker outflow force than expected from the relations for protostars, we should not rule out the possibility of other formation mechanism for BDs.
Fast, Ultraluminous X-Ray Bursts from Tidal Stripping of White Dwarfs by Intermediate-mass Black Holes
Authors: Shen 申荣 Rong-Feng 锋 
Published: January 2019

Abstract
Two X-ray sources were recently discovered by Irwin et al. that are compact companions to elliptical galaxies showing ultraluminous flares with fast rise (∼minute) and decay (∼hour), and with a peak luminosity ∼1040–41 erg s−1. Together with two other sources found earlier, they constitute a new type of fast transients that cannot be attributed to neutron stars, but might be due to intermediate-mass black holes (IMBHs;

). The flaring behavior is recurrent for at least two sources. If the flare represents a short period of accretion onto an IMBH during the periastron passage of a donor star on an eccentric (i.e., repeating) or parabolic (non-repeating) orbit, we argue that the flare’s rise time corresponds to the duration during which the donor’s tidally stripped mass joins a residual disk at the pericenter. This duration is in turn equal to three other timescales: the duration of stripping, the sound crossing time of the donor, and the circular orbit time at the pericenter radius. Only a white dwarf (WD) can have a sound crossing time as short as one minute. Therefore, the donor must be a WD and it was stripped of ∼10−10
M
⊙ upon each passage at several to tens of Schwarzschild radii from the IMBH. The flux decay corresponds to the viscous drainage of the supplied mass toward the hole. Aided by long-term X-ray monitoring, this type of fast transient would be an ideal target for next-generation gravitational wave detectors.
Discovery of Stars Surrounded by Iron Dust in the Large Magellanic Cloud
Authors: Marini Ester , Dell’Agli Flavia , Criscienzo Marcella Di , Puccetti Simonetta , García-Hernández D. A. , Mattsson Lars , Ventura Paolo 
Published: January 2019

Abstract
We consider a small sample of oxygen-rich, asymptotic giant branch stars in the Large Magellanic Cloud, observed by the Spitzer Space Telescope, exhibiting a peculiar spectral energy distribution, which can hardly be explained by the common assumption that dust around Asymptotic Giant Branch stars is primarily composed of silicate grains. We suggest that this uncommon class of objects is the progeny of a metal-poor generation of stars, with metallicity Z ∼ 1–2 × 10−3, formed ∼100 Myr ago. The main dust component in the circumstellar envelope is solid iron. In these stars the poor formation of silicates is set by the strong nucleosynthesis experienced at the base of the envelope, which provokes a scarcity of magnesium atoms and water molecules, required for the silicate formation. The importance of the present results to interpret the data from the incoming James Webb Space Telescope is also discussed.
Seismological Determination of the Alfvén Speed and Plasma Beta in Solar Photospheric Bright Points
Authors: Cho Il-Hyun , Moon Yong-Jae , Nakariakov Valery M. , Yu Dae Jung , Lee Jin-Yi , Bong Su-Chan , Kim Rok-Soon , Cho Kyung-Suk , Kim Yeon-Han , Lee Jae-Ok 
Published: January 2019

Abstract
The Alfvén speed and plasma beta in photospheric bright points (BPs) observed by the Broadband Filter Imager (BFI) of the Solar Optical Telescope on board the Hinode satellite are estimated seismologically. The diagnostics is based on the theory of slow magnetoacoustic waves in a non-isothermally stratified photosphere with a uniform vertical magnetic field. We identify and track BPs in a G-band movie by using the 3D region growing method, and align them with blue continuum images to derive their brightness temperatures. From the Fourier power spectra of 118 continuum light curves made in the BPs, we find that light curves of 91 BPs have oscillations with properties that are significantly different from oscillation in quiet regions, with the periods ranging 2.2–16.2 minutes. We find that the model gives a moderate value of the plasma beta when γ lies at around 5/3. The calculated Alfvén speed is 9.68 ± 2.02 km s−1, ranging in 6.3–17.4 km s−1. The plasma beta is estimated to be of 0.93 ± 0.36, ranging in 0.2–1.9.
Fantasy et boréalisme. Smaug, une étude de cas
Authors: Adam Virginie 
Published: January 2019

Smaug est le dragon maléfique voleur de trésor et principal antagoniste du roman The Hobbit (1937), premier texte publié de Tolkien à mettre en scène la Terre du Milieu. Universitaire et poète, il tire son inspiration de textes médiévaux anglais et norrois, écrits par des Scandinaves ou évoquant le Nord : Smaug ressemble fort à Fáfnir, le monstre tué par le héros Sigurðr, et au dragon de Beowulf . Tolkien a réutilisé certaines caractéristiques de ces œuvres mais au lieu de les rapporter à leur espace originel, la Scandinavie, il s’en sert pour créer un lieu fictionnel. Dans cet article, on examinera les implications liées à l’utilisation d’éléments boréalistes dans un roman fantasy , en utilisant Smaug comme étude de cas. Quels traits thématiques et rhétoriques Tolkien a-t-il emprunté à la description de ces dragons nordiques ? Quelles conséquences entraîne le recourt à ces éléments boréalistes déconnectés de leur référent géographique originel ?
Interrompre la distriveillance
Authors: Birchall Clare , Alloa Emmanuel 
Published: January 2019

Les sujets numérisés sont façonnés par ce qu’il faudrait appeler, à la suite de Rancière, le partage numérique du sensible – un arrangement qui détermine ce qui est visible, dicible et connaissable. Or cet arrangement implique des formes de surveillance distribuée, qu’on appellera « distriveillance », caractérisées par un transfert de la surveillance d’État vers les sujets eux-mêmes. Il est urgent d’interrompre ce partage de données automatisé pour ouvrir à nouveau à d’autres mises en commun.
Beyond Chrismukkah
Authors: Mehta Samira K. 
Published: January 2019

The rate of interfaith marriage in the United States has risen so radically since the sixties that it is difficult to recall how taboo the practice once was. How is this development understood and regarded by Americans generally, and what does it tell us about the nation’s religious life? Drawing on ethnographic and historical sources, Samira K. Mehta provides a fascinating analysis of wives, husbands, children, and their extended families in interfaith homes; religious leaders; and the social and cultural milieu surrounding mixed marriages among Jews, Catholics, and Protestants. Mehta’s eye-opening look at the portrayal of interfaith families across American culture since the mid-twentieth century ranges from popular TV shows, holiday cards, and humorous guides to “Chrismukkah” to children’s books, young adult fiction, and religious and secular advice manuals. Mehta argues that the emergence of multiculturalism helped generate new terms by which interfaith families felt empowered to shape their lived religious practices in ways and degrees previously unknown. They began to intertwine their religious identities without compromising their social standing. This rich portrait of families living diverse religions together at home advances the understanding of how religion functions in American society today.
The Limits of Theory in Trauma and Transcendence
Authors: Boynton Eric , Capretto Peter 
Published: January 2019

This introduction describes the challenge of how to think trauma in light of the field's burgeoning interdisciplinarity, and often its theoretical splintering. The introduction offers an overview of scholarship on trauma that has always been challenged by the temporal, affective, and corporeal dimensions of trauma itself, yet it has recently been rendered all the more complex by theoretical and methodological issues that have emerged for these disciplines in their attempts to think trauma. From distinctive disciplinary vectors, the introduction introduces the work of philosophers, social theorists, philosophical psychologists and theologians that considers the limits and prospects of theory when thinking trauma and transcendence, particularly as it relates to Continental Philosophy of Religion.
A Contribution to the phono-kinetic approach: An architectural experimentation to design a public shelter
Authors: Chelkoff Gregoire 
Published: January 2019

Despite the current evolution of several tools that help understanding, representing and constructing a better awareness of sound and more generally the sensory qualities of the built environment, the integration of sonic dimension in the ordinary architectural production remains difficult. Sonic dimension is still undervalued considered as an accessory or as a second dimension of the space. Till now, the sonic quality doesn’t have its legitimacy in the architectural and urban thinking except in specific situations where designer should solve certain problems of noise and propagation. Therefore, we should find the appropriate qualitative criteria of the architectural elements that don’t only integrate the perceptive aspects but also the action. In this sense, we shall present an experimentation that has been elaborated to clarify the relationship between sound and movement or sound and action in order to design spatial architectural elements. How can we identify the sonic role during the spatial experiment and explore the different corporal and movement modalities that emerge by hearing? We postulate that the actions potentials that emerge in a sonic context must be considered as an alternative that can modulate the environment in space and time[1]. [1] This paper is based on another article : Approche écologique de kinesthèses sonores : expérimentation d'un prototype d'abri public et ergonomie acoustique, Acoustique et techniques, n° 41, 2005, pp. 24-31
Conceptual overlays for urban soundscape design emerging from a transversal analysis of Lefebvre, Deleuze and Guattari, and Arendt
Authors: Lacey Jordan 
Published: January 2019

This paper describes theoretical developments that have emerged alongside the author’s urban soundscape design practice. The theory, which emerged from a transversal analysis of Henri Lefebvre, Gilles Deleuze and Felix Guattari, and Hannah Arendt, particularly their philosophical investigations of space, rhythm and nature, is presented as four conceptual overlays to aid soundscape design practices in urban spaces. The first conceptual overlay, Radiating Striations of Centralities, synthesises spatial discussions of Deleuze and Guattari and Lefebvre into soundscape design approaches that simultaneously respond to centralized controls and the peripheries of urban spaces. The second conceptual overlay, The Isorhythimc Refrain, convolves Deleuze and Guattari’s refrain and Lefebvre’s isorhythms into identifiable socially controlling rhythms that unfold as captured sonic and gestural forms throughout urban spaces. The third conceptual overlay, Altered Soundscapes as Emergent Ecologies, investigates Guattari’s a-signifying rupture and the potential of soundscape design as rupture to affect the emergence of Lefebvre’s new nature(s) in urban spaces. The fourth conceptual overlay, Disassembling the Collective Assemblage of Enunciation, discusses Arendt’s reflections on social rhythms subsuming society into automated behaviour, and the challenges that can be presented to such automated behaviour through the act of soundscape design. The four conceptual overlays provide sociopolitical and ecological understandings of the urban that contribute to a soundscape design practice from which public soundscape installations are created to subvert controlling spatiotemporal rhythms of the urban for the emergence of new nature(s). The article concludes by suggesting that due to the amorphous characteristics of sound the soundscape designer is in a unique position to affect immediate sociopolitical and experiential transformations of urban spaces.
Literary experience and the book trailer as intermedial paratext
Authors: Grøn Rasmus 
Published: January 2019

The article explores the characteristics and variations of the book trailer genre in light of the different ways in which book trailers stage the literary experience of their source texts. The book trailer’s intermedial character as audiovisual representation of linguistic texts raises a ‘question of representation’ that poses a significant artistic challenge and potentially violates the virtual quality of the literary reading experience. On the basis of an extensive sample, a number of book trailers are analysed and a tentative book trailer typology is established based on different modes of addressing the genre’s inherent ‘question of representation’.
Turning movement into music: Issues and applications of the MotionComposer, a therapeutic device for persons with different abilities
Authors: Bergsland Andreas , Wechsler Robert 
Published: January 2019

The article discusses the ways in which the MotionComposer (MC), a newly developed device that turns movement into music, engages users with different abilities, so as to provide positive psychological and somatic effects. It begins with a case study – the story of one application of the device involving a young man with cerebral palsy. His experiences are typical of many others and provide some useful generalisations. The article then discusses a number of goals and related design principles that have been important in the development of the device, including a discussion of two conflicting strategies which must be reconciled: On the one hand, there is a need for clear causality. On the other hand, for such a device to remain interesting over time, there is a need for variation. A technical description of the hardware and software is given, followed by a discussion of general mapping issues pertaining to the different sound environments or interaction modes of the MC.
Violence and post-hegemony - Theorising affective resonances between voice and habit memory
Authors: Szarecki Artur 
Published: January 2019

The prevailing accounts of voice within cultural studies often centre on issues of political representation and authority, bypassing the material aspects of voice and ensuing political effects thereof. By analysing a violent incident during a hip hop concert in Poland, this paper attempts to provide a post-hegemonic account of the politics of voice. It traces the circulation of sonic intensities comprising the event – including the sonority of voice, its electric amplification and the rhythmic organisation of verbal interactions – arguing that they directly modulated the behaviour patterns of the audience via affective transmission. Furthermore, the concept of habit memory is employed to indicate the limits of contagion. The paper thus rereads the outbreak of violence in terms of resonances that occur beneath the level of discourse, immanently restructuring the encounters between bodies.
Association of TIMP4 gene variants with steroid-induced osteonecrosis of the femoral head in the population of northern China
Authors: Wang Jiaqi , An Feimeng , Cao Yuju , Gao Hongyan , Sun Mingqi , Ma Chao , Wu Hao , Zhang Baoxin , Liu Wanlin , Wang Jianzhong 
Published: January 2019

BackgroundIn clinical treatment, the use of steroid hormones is an important etiological factor of non-traumatic osteonecrosis of the femoral head (ONFH) risk. As an endogenous inhibitor of matrix metalloproteinases (MMPs) in the extracellular matrix, the expression of tissue inhibitors of metalloprotease-4 (TIMP4) plays an essential role in cartilage and bone tissue damage and remodeling, vasculitis formation, intravascular thrombosis, and lipid metabolism.MethodsThis study aimed to detect the association between TIMP4 polymorphism and steroid-induced ONFH. We genotyped seven single-nucleotide polymorphisms (SNPs) in TIMP4 genes and analyzed the association with steroid-induced ONFH from 286 steroid-induced ONFH patients and 309 normal individuals.ResultsWe performed allelic model analysis and found that the minor alleles of five SNPs (rs99365,rs308952,rs3817004,rs2279750, andrs3755724) were associated with decreased steroid-induced ONFH (p = 0.02,p = 0.03,p = 0.04,p = 0.01,p = 0.04, respectively).rs2279750showed a significant association with decreased risk of steroid-induced ONFH in the Dominant and Log-additive models (p = 0.042,p = 0.028, respectively), andrs9935,rs30892, andrs3817004were associated with decreased risk in the Log-additive model (p = 0.038,p = 0.044,p = 0.042, respectively). In further stratification analysis, TIMP4 gene variants showed a significant association with steroid-induced ONFH in gender under the genotypes. Haplotype analysis also revealed that “TCAGAC” and “CCGGAA” sequences have protective effect on steroid-induced ONFH.ConclusionOur results indicate that five TIMP4 SNPs (rs99365,rs308952,rs3817004rs2279750, andrs3755724) are significantly associated with decreased risk of steroid-induced ONFH in the population of northern China.