bluuebunny/crossref_metadata_2025_split huggingface dataset:
SPITZER IRAC OBSERVATIONS OF IR EXCESS IN HOLMBERG IX X-1: A CIRCUMBINARY DISK OR A VARIABLE JET?
Authors: Dudik R. P. , Berghea C. T. , Roberts T. P. , Grisé F. , Singh A. , Pagano R. , Winter L. M. 
Published: October 2016

ABSTRACT
We present Spitzer Infrared Array Camera photometric observations of the ultraluminous X-ray source (ULX, X-1) in Holmberg IX. We construct a spectral energy distribution (SED) for Holmberg IX X-1 based on published optical, UV, and X-ray data combined with the IR data from this analysis. We modeled the X-ray and optical data with disk and stellar models; however, we find a clear IR excess in the ULX SED that cannot be explained by fits or extrapolations of any of these models. Instead, further analysis suggests that the IR excess results from dust emission, possibly a circumbinary disk, or a variable jet.
A NEW γ-RAY LOUD, ECLIPSING LOW-MASS X-RAY BINARY
Authors: Strader Jay , Li Kwan-Lok , Chomiuk Laura , Heinke Craig O. , Udalski Andrzej , Peacock Mark , Shishkovsky Laura , Tremou Evangelia 
Published: October 2016

ABSTRACT
We report the discovery of an eclipsing low-mass X-ray binary at the center of the 3FGL error ellipse of the unassociated Fermi/Large Area Telescope γ-ray source 3FGL J0427.9–6704. Photometry from OGLE and the SMARTS 1.3 m telescope and spectroscopy from the SOAR telescope have allowed us to classify the system as an eclipsing low-mass X-ray binary (P = 8.8 hr) with a main-sequence donor and a neutron-star accretor. Broad double-peaked H and He emission lines suggest the ongoing presence of an accretion disk. Remarkably, the system shows separate sets of absorption lines associated with the accretion disk and the secondary, and we use their radial velocities to find evidence for a massive (∼1.8–1.9 M
⊙) neutron-star primary. In addition to a total X-ray eclipse with a duration of ∼2200 s observed with NuSTAR, the X-ray light curve also shows properties similar to those observed among known transitional millisecond pulsars: short-term variability, a hard power-law spectrum (

), and a comparable 0.5–10 keV luminosity (

erg s−1). We find tentative evidence for a partial (

) γ-ray eclipse at the same phase as the X-ray eclipse, suggesting the γ-ray emission may not be confined to the immediate region of the compact object. The favorable inclination of this binary is promising for future efforts to determine the origin of γ-rays among accreting neutron stars.
FAINT SUBMILLIMETER GALAXIES IDENTIFIED THROUGH THEIR OPTICAL/NEAR-INFRARED COLORS. I. SPATIAL CLUSTERING AND HALO MASSES
Authors: Chen (陳建州) Chian-Chou , Smail Ian , Swinbank A. M. , Simpson James M. , Almaini Omar , Conselice Christopher J. , Hartley Will G. , Mortlock Alice , Simpson Chris , Wilkinson Aaron 
Published: October 2016

ABSTRACT
The properties of submillimeter galaxies (SMGs) that are fainter than the confusion limit of blank-field single-dish surveys (

2 mJy) are poorly constrained. Using a newly developed color selection technique, Optical-Infrared Triple Color (OIRTC), that has been shown to successfully select such faint SMGs, we identify a sample of 2938 OIRTC-selected galaxies, dubbed Triple Color Galaxies (TCGs), in the UKIDSS-UDS field. We show that these galaxies have a median 850 μm flux of

mJy (equivalent to a star formation rate SFR

yr−1 based on spectral energy distribution fitting), representing the first large sample of faint SMGs that bridges the gap between bright SMGs and normal star-forming galaxies in S
850 and L
IR. We assess the basic properties of TCGs and their relationship with other galaxy populations at

. We measure the two-point autocorrelation function for this population and derive a typical halo mass of log10(

)

,

, and

at

, 2–3, and 3–5, respectively. Together with the bright SMGs (

mJy) and a comparison sample of less far-infrared luminous star-forming galaxies, we find a lack of dependence between spatial clustering and S
850 (or SFR), suggesting that the difference between these populations may lie in their local galactic environment. Lastly, on the scale of

at

we find a tentative enhancement of the clustering of TCGs over the comparison star-forming galaxies, suggesting that some faint SMGs are physically associated pairs, perhaps reflecting a merging origin in their triggering.
MULTIFREQUENCY PHOTO-POLARIMETRIC WEBT OBSERVATION CAMPAIGN ON THE BLAZAR S5 0716+714: SOURCE MICROVARIABILITY AND SEARCH FOR CHARACTERISTIC TIMESCALES*
Authors: Bhatta G. , Stawarz Ł. , Ostrowski M. , Markowitz A. , Akitaya H. , Arkharov A. A. , Bachev R. , Benítez E. , Borman G. A. , Carosati D. , Cason A. D. , Chanishvili R. , Damljanovic G. , Dhalla S. , Frasca A. , Hiriart D. , Hu S-M. , Itoh R. , Jableka D. , Jorstad S. , Jovanovic M. D. , Kawabata K. S. , Klimanov S. A. , Kurtanidze O. , Larionov V. M. , Laurence D. , Leto G. , Marscher A. P. , Moody J. W. , Moritani Y. , Ohlert J. M. , Paola A. Di , Raiteri C. M. , Rizzi N. , Sadun A. C. , Sasada M. , Sergeev S. , Strigachev A. , Takaki K. , Troitsky I. S. , Ui T. , Villata M. , Vince O. , Webb J. R. , Yoshida M. , Zola S. 
Published: October 2016

ABSTRACT
Here we report on the results of the Whole Earth Blazar Telescope photo-polarimetric campaign targeting the blazar S5 0716+71, organized in 2014 March to monitor the source simultaneously in BVRI and near-IR filters. The campaign resulted in an unprecedented data set spanning ∼110 hr of nearly continuous, multiband observations, including two sets of densely sampled polarimetric data mainly in the R filter. During the campaign, the source displayed pronounced variability with peak-to-peak variations of about 30% and “bluer-when-brighter” spectral evolution, consisting of a day-timescale modulation with superimposed hour-long microflares characterized by ∼0.1 mag flux changes. We performed an in-depth search for quasi-periodicities in the source light curve; hints for the presence of oscillations on timescales of ∼3 and ∼5 hr do not represent highly significant departures from a pure red-noise power spectrum. We observed that, at a certain configuration of the optical polarization angle (PA) relative to the PA of the innermost radio jet in the source, changes in the polarization degree (PD) led the total flux variability by about 2 hr; meanwhile, when the relative configuration of the polarization and jet angles altered, no such lag could be noted. The microflaring events, when analyzed as separate pulse emission components, were found to be characterized by a very high PD (>30%) and PAs that differed substantially from the PA of the underlying background component, or from the radio jet positional angle. We discuss the results in the general context of blazar emission and energy dissipation models.
NUMERICAL SIMULATIONS OF PLASMA DYNAMICS IN THE VICINITY OF A RETRACTING FLUX TUBE
Authors: Scott Roger B. , Longcope Dana W. , McKenzie David E. 
Published: October 2016

ABSTRACT
In a previous paper, we presented an analytical, zero-β model for supra-arcade downflows in which a retracting flux tube deforms the surrounding magnetic field, constricting the flow of plasma along affected field lines and, in some cases, forcing the plasma to exhibit collimated shocks. Here we present a numerical simulation based on the same model construction—a retracting flux tube is treated as a rigid boundary around which the plasma is forced to flow and the magnetic field and plasma evolve according to the governing equations of magnetohydrodynamics. We find that the collimated shocks described in our previous study are recovered for plasma β in the range of 0 ≤ β ≲ 1, while for 1 ≲ β the behavior is similar to the simpler hydrodynamic case, with classical bow shocks forming when the acoustic Mach number approaches or exceeds unity. Furthermore, we find that while the plasma β is important for identifying the various types of behaviors, more important still is the Alfvén Mach number, which, if large, implies that the bulk kinetic energy of the fluid exceeds the internal energy of the magnetic field, thereby leading to the formation of unconfined, fast-mode magnetosonic shocks, even in the limit of small β.
UNCOVERING CIRCUMBINARY PLANETARY ARCHITECTURAL PROPERTIES FROM SELECTION BIASES
Authors: Li Gongjie , Holman Matthew J. , Tao Molei 
Published: October 2016

ABSTRACT
Studying newly discovered circumbinary planetary systems improves our understanding of planetary system formation. Learning the architectural properties of these systems is essential for constraining the different formation mechanisms. We first revisit the stability limit of circumbinary planets. Next, we focus on eclipsing stellar binaries and obtain an analytical expression for the transit probability in a realistic setting, where a finite observation period and planetary orbital precession are included. Our understanding of the architectural properties of the currently observed transiting systems is then refined, based on Bayesian analysis and a series of tested hypotheses. We find that (1) it is not a selection bias that the innermost planets reside near the stability limit for eight of the nine observed systems, and this pile-up is consistent with a log uniform distribution of the planetary semimajor axis; (2) it is not a selection bias that the planetary and stellar orbits are nearly coplanar (≲3°), and this—along with previous studies—may imply an occurrence rate of circumbinary planets similar to that of single star systems; (3) the dominance of observed circumbinary systems with only one transiting planet may be caused by selection effects; (4) formation mechanisms involving Lidov–Kozai oscillations, which may produce misalignment and large separation between planets and stellar binaries, are consistent with the lack of transiting circumbinary planets around short-period stellar binaries, in agreement with previous studies. As a consequence of (4), eclipse timing variations may better suit the detection of planets in such configurations.
HERSCHEL-RESOLVED OUTER BELTS OF TWO-BELT DEBRIS DISKS—EVIDENCE OF ICY GRAINS*
Authors: Morales F. Y. , Bryden G. , Werner M. W. , Stapelfeldt K. R. 
Published: October 2016

ABSTRACT
We present dual-band Herschel/PACS imaging for 59 main-sequence stars with known warm dust (T
warm ∼ 200 K), characterized by Spitzer. Of 57 debris disks detected at Herschel wavelengths (70 and/or 100 and 160 μm), about half have spectral energy distributions (SEDs) that suggest two-ring disk architectures mirroring that of the asteroid–Kuiper Belt geometry; the rest are consistent with single belts of warm, asteroidal material. Herschel observations spatially resolve the outer/cold dust component around 14 A-type and 4 solar-type stars with two-belt systems, 15 of which for the first time. Resolved disks are typically observed with radii >100 AU, larger than expected from a simple blackbody fit. Despite the absence of narrow spectral features for ice, we find that the shape of the continuum, combined with resolved outer/cold dust locations, can help constrain the grain size distribution and hint at the dust’s composition for each resolved system. Based on the combined Spitzer/IRS+Multiband Imaging Photometer (5-to-70 μm) and Herschel/PACS (70-to-160 μm) data set, and under the assumption of idealized spherical grains, we find that over half of resolved outer/cold belts are best fit with a mixed ice/rock composition. Minimum grain sizes are most often equal to the expected radiative blowout limit, regardless of composition. Three of four resolved systems around the solar-type stars, however, tend to have larger minimum grains compared to expectation from blowout (f
MB = a
min/a
BOS ∼ 5). We also probe the disk architecture of 39 Herschel-unresolved systems by modeling their SEDs uniformly, and find them to be consistent with 31 single- and 8 two-belt debris systems.
GENERAL-RELATIVISTIC THREE-DIMENSIONAL MULTI-GROUP NEUTRINO RADIATION-HYDRODYNAMICS SIMULATIONS OF CORE-COLLAPSE SUPERNOVAE
Authors: Roberts Luke F. , Ott Christian D. , Haas Roland , O’Connor Evan P. , Diener Peter , Schnetter Erik 
Published: October 2016

ABSTRACT
We report on a set of long-term general-relativistic three-dimensional (3D) multi-group (energy-dependent) neutrino radiation-hydrodynamics simulations of core-collapse supernovae. We employ a full 3D two-moment scheme with the local M1 closure, three neutrino species, and 12 energy groups per species. With this, we follow the post-core-bounce evolution of the core of a nonrotating

progenitor in full unconstrained 3D and in octant symmetry for ≳380 ms. We find the development of an asymmetric runaway explosion in our unconstrained simulation. We test the resolution dependence of our results and, in agreement with previous work, find that low resolution artificially aids explosion and leads to an earlier runaway expansion of the shock. At low resolution, the octant and full 3D dynamics are qualitatively very similar, but at high resolution, only the full 3D simulation exhibits the onset of explosion.
Global change impacts on ecosystem services: a spatially explicit assessment for Europe
Authors: Polce Chiara , Maes Joachim , Brander Luke , Cescatti Alessandro , Baranzelli Claudia , Lavalle Carlo , Zulian Grazia 
Published: October 2016

The widely reported impacts of climate change on ecosystems and biodiversity pose a threat also to the supply of ecosystem services. Ecosystem services (ES) arise when ecological structures or functions contribute toward meeting a human demand. Global change is impacting biodiversity and ecosystems properties and is therefore likely to affect the supply of ES and, consequently, human well-being. Assessing the possible bio-physical impacts of the ongoing and future changes in climate is relevant for designing mitigation and adaptation policies. Yet undergoing a comprehensive climate impact assessment continues to be a demanding research challenge due to the large knowledge gaps, for instance on impact areas such as the consequences on ecosystem services.
Here we present a preliminary assessment of the changes in ES supply as a function of projected changes in climate and land use / land cover (LULC). The assessment is carried out for the mainland of the 28 Member States (MS) of the European Union (EU-28). The focus of the analysis is on regulating ecosystem services, which are directly dependent on the proper functioning of ecosystems, they are not traded on markets so that their contribution to human well-being is more difficult to assess. We present an assessment of changes in ES supply for three regulating services: air quality regulation, soil erosion control, and water flow regulation. The assessment was carried out under the IPCC SRES A1B climate change scenario. Changes were expressed as a positive or negative percentage variation, relative to the present situation. Land conversion was found to have a much stronger impact on ES provision than climate change. When considering both climate change and LULC change the expected variation ranged between -100% and +100%. These results are explained by the key role that LULC plays in the delivery of regulating ES. The sensitivity of ES to climate change is smaller than that to LULC change, with variations ranging at the most between -27% and +27%. However, these changes are the most relevant to assess, for instance, potential economic impacts of climate change on the provision of ES. There are clearly major challenges to address within the area of climate-change impacts, yet the scale of global change requires prompt actions to mitigate or adapt to the new conditions. This work, therefore, represents perforce a preliminary spatially explicit assessment. Further research is needed not only to expand the analysis to other ES, but also to incorporate processes and scaling properties of the systems considered as they become available, and to account for spatial dependencies.
Quand dire, c’est exclure
Authors: Laufer Laurie 
Published: October 2016

Freud raconte dans L’interprétation des rêves le souvenir humiliant de son père insulté. L’insulte expulse d’un universel qui relève de l’imaginaire, produit par le discours d’un pouvoir en place, et crée une catégorie minoritaire. Cette scène paradigmatique produit chez Freud un questionnement sur les effets excluants de la violence du langage et tout à la fois un désir de répondre à cette humiliation. Comment un acte de bannissement peut-il permettre une subjectivation ? Dans Le pouvoir des mots , Judith Butler analyse cette transformation. Quels effets stigmatisants le discours de la science et les diagnostics psychiatriques peuvent-ils avoir sur le sujet ? Si l’injure produit de la honte, celle-ci peut se métamorphoser en puissance d’agir. Les écrits de Jean Genet en sont l’emblème.
Corps séparé, corps échoué : le sujet de l’exil
Authors: Assoun Paul-Laurent 
Published: October 2016

La question de l’étranger donne vue sur la logique inconsciente de la ségrégation, comme position subjective et condition sociale. Le sujet-en-exil n’est pas seulement retranché de la jouissance indigène, il déclenche à cette occasion quelque chose du corps propre, qui se dévoile dans et par la « condition exilique ». C’est le corps-épave, « échoué » sur le rivage, sur la rive de l’autre qui en donne la mesure. L’« échouage » d’une épave nommée Ulysse, dans laquelle Nausicaa reconnaît la forme du héros, peut en servir de paradigme. Cela permet de mettre en perspective la question du « soin » que requiert ce corps exilé et en quoi l’événement de l’exil révèle, sur le mode traumatique, une donnée structurale, soit l’éloignement du sujet par rapport à son corps, rencontre de son « extimité ». On trouve là l’objet d’origine de la clinique, ce mal du pays ( Heimweh ), « sentiment de l’Autre » dont l’exil est l’actualisation. Bref, l’exil déclenche le corps, ce qui, à travers la clinique des somatisations, donne vue sur une clinique de l’étranger.
La ségrégation comme prélude à l’extermination : le génocide des Tutsi au Rwanda
Authors: Waintrater Régine 
Published: October 2016

Dans tout génocide ou violence de masse, la ségrégation sociale, raciale ou spatiale, est le prélude à l’extermination. La mise en ghetto ou le rassemblement sur des lieux identifiables sont les étapes décisives d’un processus de désignation, de tri et de mise à l’écart souvent initié longtemps avant le crime. C’est précisément la planification ségrégative qui distingue les violences de masse spontanées des crimes de génocide : cette étape consiste à désigner un groupe comme spécifique et différent, pour mieux l’isoler, le qualifier et ensuite l’éliminer, en raison de sa dangerosité supposée. Ainsi, dans le cas des Tutsi au Rwanda, l’idéologie racialiste importée par le colonisateur s’est traduite longtemps avant 1994 par une série de mesures ségrégatives indispensables à l’élaboration et la réalisation du projet génocidaire.
Violence, différence et inégalité sociale dans un quartier indigène du Chaco argentin
Authors: Salamanca Villamizar Carlos 
Published: October 2016

L’analyse d’un cas de violence policière dans un quartier périurbain « indigène » habité par des familles Toba Qom , nous permettra de démontrer que les configurations contemporaines de la ségrégation ont affaire à la culture, reproduisent des différences sociales et ont recours au passé pour réécrire au présent les relations d’identité et d’altérité avec ceux qui sont désignés comme étant les « autres ». À partir d’une perspective spatiale et de l’analyse de trois figures (le leader politique, le médiateur avec les partis politiques, le pasteur), nous nous proposons de cerner les modalités complexes avec lesquelles la ségrégation se forme et se reproduit aujourd’hui dans des contextes locaux.
Handicap, figure de stigmatisation
Authors: Gargiulo Marcela 
Published: October 2016

La figure du handicap représente un paradigme intéressant pour réfléchir aux enjeux de la ségrégation et de la stigmatisation : elle fait figure d’étranger, éveille des représentations de monstruosité ; elle est source de projections violentes, d’un sentiment d’inquiétante étrangeté, de contagion et de dégoût. Notre expérience clinique avec des personnes porteuses de marques, de stigmates résultant des traces d’une pathologie somatique et/ou d’un handicap nous a permis de constater combien le repli sur soi, l’enfermement, voire l’auto-exclusion sont des mécanismes révélateurs d’un effort du sujet pour se maintenir sur le plan narcissique devant le regard d’autrui. Nous concluons que le processus de stigmatisation est le fruit d’une coconstruction sur le plan duel, groupal et social. Il ne laisse pas celui qui est porteur du stigma dans une position passive. Les représentations subjectives du handicap interviennent de manière active dans le processus de stigmatisation qui doit être compris non seulement en termes d’attribut mais aussi en termes de relation.
Inclusion paradoxale et ségrégations à l’école secondaire
Authors: Zelmanovich Perla , Bley Lucia 
Published: October 2016

Les processus de ségrégation, qui sont notamment à l’œuvre dans les écoles du secondaire, représentent l’une des formes contemporaines du malaise dans la culture ; ils complexifient, jour après jour, la violence dans le tissu social. Des recherches menées en Argentine et mises en perspective avec celles d’autres pays d’Amérique latine et d’Europe, permettent de repérer des effets paradoxaux des politiques universelles d’inclusion scolaire. Ces effets apparaissent d’autant plus déterminants sur le plan social et subjectif à l’occasion de l’adolescence. Orientés par la psychanalyse et le paradigme indiciaire , les ségrégations seront ici étudiées au cas par cas et envisagées dans l’articulation de trois dimensions : culturelle, institutionnelle et subjective. La figure de l’élève inclus qui apparaît paradoxalement exclu du discours éducatif émerge ici. Dans une perspective transdisciplinaire à partir de la psychanalyse (la théorie des quatre discours , le transfert , la logique du tout/pas-tout ) et de la pédagogie ( la théorie du lien éducatif), nous étudierons des expériences parvenant à ébranler les figures cristallisées de la ségrégation. Ces expériences nous permettront de formaliser des approches qui déjouent ces processus d’auto et d’hétéroségrégation.
L’intrus qui venait de l’intérieur
Authors: Leroy Fabrice , Fawaz Abir 
Published: October 2016

Si l’intrus est celui qui s’introduit de force dans un lieu sans y être invité et sans en avoir le droit (l’indésirable et l’illégitime), le cancer semble agir de même, à ceci près : l’intrus était déjà là, à l’intérieur, et on ne le savait pas. D’où un paradoxe : comment ce qui était déjà là peut-il faire intrusion ? Qu’est-ce qui fait intrusion : être malade, ou se savoir malade ? Comment ce qui a toujours été en soi, au plus intime d’une réalité biologique et psychique, peut-il se retrouver du jour au lendemain transformé en figure de l’étrange et de l’étranger en soi ? À travers deux récits, « l’intrus » de Jean-Luc Nancy, et « Hors de moi », de Claire Marin, nous nous proposons de cerner d’un peu plus près cette figure de l’intrus, et de l’articuler ensuite d’une part à l’inquiétante étrangeté chez Freud, d’autre part à l’extime chez Lacan. Autant de manière de dire ce qui, au plus intime, « à l’intérieur », s’éprouve comme extériorité troublante, au point de s’étendre parfois au sujet lui-même.