pinecone/core-2020-05-10-deduplication huggingface dataset:
Variable stars in the globular cluster NGC 7492. New discoveries and
  physical parameters determination

We have performed a photometric V, R, I CCD time-series analysis with a
baseline of ~8 years of the outer-halo globular cluster NGC 7492 with the aim
of searching for new variables and using these (and the previously known
variables) to determine the physical parameters of interest for the cluster
(e.g. metallicity, absolute magnitude of the horizontal branch, distance,
etc.).
  We use difference image analysis (DIA) to extract precise light curves in the
relatively crowded star field, especially towards the densely populated central
region. Several approaches are used for variability detection that recover the
known variables and lead to new discoveries. We determine the physical
parameters of the only RR0 star using light curve Fourier decomposition
analysis.
  We find one new long period variable and two SX Phe stars in the blue
straggler region. We also present one candidate SX Phe star which requires
follow-up observations. Assuming that the SX Phe stars are cluster members and
using the period-luminosity relation for these stars, we estimate their
distances as ~25.2+-1.8 and 26.8+-1.8 kpc, and identify their possible modes of
oscillation. We refine the periods of the two RR Lyrae stars in our field of
view. We find that the RR1 star V2 is undergoing a period change and possibly
exhibits the Blazhko effect. Fourier decomposition of the light curve of the
RR0 star V1 allows us to estimate the metallicity [Fe/H]_ZW-1.68+-0.10 or
[Fe/H]_UVES-1.64+-0.13, log-luminosity ~1.76+-0.02, absolute magnitude
~0.38+-0.04 mag, and true distance modulus of ~16.93+-0.04 mag, which is
equivalent to a distance of ~24.3+-0.5 kpc. All of these values are consistent
with previous estimates in the literature.Comment: 12 pages, 13 figures, 6 tables, accepted for publication in A&
Conjugate observations of Saturn's northern and southern H3+ aurorae

We present an analysis of recent high spatial and spectral resolution
ground-based infrared observations of H3+ spectra obtained with the 10-metre
Keck II telescope in April 2011. We observed H3+ emission from Saturn's
northern and southern auroral regions, simultaneously, over the course of more
than two hours, obtaining spectral images along the central meridian as Saturn
rotates. Previous ground-based work has derived only an average temperature of
an individual polar region, summing an entire night of observations. Here we
analyse 20 H3+ spectra, 10 for each hemisphere, providing H3+ temperature,
column density and total emission in both the northern and southern polar
regions simultaneously, improving on past results in temporal cadence and
simultaneity. We find that: 1) the average thermospheric temperatures are
527+/-18 K in northern Spring and 583+/-13 K in southern Autumn, respectively;
2) this asymmetry in temperature is likely to be the result of an inversely
proportional relationship between the total thermospheric heating rate (Joule
heating and ion drag) and magnetic field strength - i.e. the larger northern
field strength leads to reduced total heating rate and a reduced temperature,
irrespective of season, and 3) this implies that thermospheric heating and
temperatures are relatively insensitive to seasonal effects.Comment: 31 pages (single column), 4 figures, 1 table. Accepted in Icarus 7th
  November 201
KLWMIJ Reggeon Field Theory beyond the large $N_c$ limit

We extend the analysis of KLWMIJ evolution in terms of QCD Reggeon fields
beyond leading order in the $1/N_c$ expansion. We show that there is only one
type of corrections to the leading order Hamiltonian discussed in \cite{last}.
These are terms linear in original Reggeons and quadratic in conjugate Reggeon
operators. All of these have the interpretation as vertices of the "`merging"'
type $2\rightarrow 1$, where two Reggeons merge into one. Importantly, the
triple Pomeron merging vertex does not emerge from the KLWMIJ Hamiltonian. We
show that, although in the range of applicability of the KLWMIJ Hamiltonian
these merging terms are subleading in $N_c$, in the dense-dense regime they all
become of the same (leading) order in $N_c$. In this regime vertices involving
higher Reggeons are enhanced by inverse powers of the coupling constant.Comment: 25 page
N=2 Heterotic-Type II duality and bundle moduli

Heterotic string compactifications on a $K3$ surface $\mathfrak{S}$ depend on
a choice of hyperk\"ahler metric, anti-self-dual gauge connection and
Kalb-Ramond flux, parametrized by hypermultiplet scalars. The metric on
hypermultiplet moduli space is in principle computable within the $(0,2)$
superconformal field theory on the heterotic string worldsheet, although little
is known about it in practice. Using duality with type II strings compactified
on a Calabi-Yau threefold, we predict the form of the quaternion-K\"ahler
metric on hypermultiplet moduli space when $\mathfrak{S}$ is elliptically
fibered, in the limit of a large fiber and even larger base. The result is in
general agreement with expectations from Kaluza-Klein reduction, in particular
the metric has a two-stage fibration structure, where the $B$-field moduli are
fibered over bundle and metric moduli, while bundle moduli are themselves
fibered over metric moduli. A more precise match must await a detailed analysis
of $R^2$-corrected ten-dimensional supergravity.Comment: 20 page
Wheeler-DeWitt Equation in AdS/CFT Correspondence

We discuss a quantum extension of the holographic RG flow equation obtained
previously from the classical Hamiltonian constraint in the bulk AdS
supergravity. The Wheeler-DeWitt equation is proposed to generate the extended
RG flow and to produce 1/N subleading corrections systematically. Our
formulation in five dimensions is applied to the derivation of the Weyl anomaly
of boundary N=4 SU(N) super-Yang-Mills theory beyond the large N limit. It is
shown that subleading 1/N^2 corrections arising from fields in AdS_5
supergravity agree with those obtained recently by Mansfield et al. using their
Schroedinger equation, thereby guaranteeing to reproduce the exact form of the
boundary Weyl anomaly after summing up all of the KK modes.Comment: 7 pages, LaTex, references adde
Lie-algebra expansions, Chern-Simons theories and the Einstein-Hilbert
  lagrangian

Starting from gravity as a Chern-Simons action for the AdS algebra in five
dimensions, it is possible to deform the theory through an expansion of the Lie
algebra that leads to a system consisting of the Einstein-Hilbert action plus
nonminimally coupled matter. The deformed system is gauge invariant under the
Poincare group enlarged by an Abelian ideal. Although the resulting action
naively looks like General Relativity plus corrections due to matter sources,
it is shown that the nonminimal couplings produce a radical departure from GR.
Indeed, the dynamics is not continuously connected to the one obtained from
Einstein-Hilbert action. In a matter-free configuration and in the torsionless
sector, the field equations are too strong a restriction on the geometry as the
metric must satisfy both the Einstein and pure Gauss-Bonnet equations. In
particular, the five-dimensional Schwarzschild geometry fails to be a solution;
however, configurations corresponding to a brane-world with positive
cosmological constant on the worldsheet are admissible when one of the matter
fields is switched on. These results can be extended to higher odd dimensions.Comment: 11 page
Exact solution of the Dirac equation for a Coulomb and a scalar
  Potential in the presence of of an Aharonov-Bohm and magnetic monopole fields

In the present article we analyze the problem of a relativistic Dirac
electron in the presence of a combination of a Coulomb field, a $1/r$ scalar
potential as well as a Dirac magnetic monopole and an Aharonov-Bohm potential.
Using the algebraic method of separation of variables, the Dirac equation
expressed in the local rotating diagonal gauge is completely separated in
spherical coordinates, and exact solutions are obtained. We compute the energy
spectrum and analyze how it depends on the intensity of the Aharonov-Bohm and
the magnetic monopole strengths.Comment: 19 pages, REVTEX, no figures
On a generalized Connes-Hochschild-Kostant-Rosenberg theorem

The central result here is an explicit computation of the Hochschild and
cyclic homologies of a natural smooth subalgebra of stable continuous trace
algebras having smooth manifolds X as their spectrum. More precisely, the
Hochschild homology is identified with the space of differential forms on X,
and the periodic cyclic homology with the twisted de Rham cohomology of X,
thereby generalizing some fundamental results of Connes and
Hochschild-Kostant-Rosenberg. The Connes-Chern character is also identified
here with the twisted Chern character.Comment: 35 pages, latex2e, uses xypic. To appear in, Advances in Mathematic
An approximation for zero-balanced Appell function $F_1$ near $(1,1)$

We suggest an approximation for the zero-balanced Appell hypergeometric
function $F_1$ near the singular point $(1,1)$. Our approximation can be viewed
as a generalization of Ramanujan's approximation for zero-balanced ${_2F_1}$
and is expressed in terms of ${_3F_2}$. We find an error bound and prove some
basic properties of the suggested approximation which reproduce the similar
properties of the Appell function. Our approximation reduces to the
approximation of Carlson-Gustafson when the Appell function reduces to the
first incomplete elliptic integral.Comment: 10 page
Continuous spectral decompositions of Abelian group actions on
  C*-algebras

Let G be a locally compact Abelian group. Following Ruy Exel, we view Fell
bundles over the Pontrjagin dual of G as continuous spectral decompositions of
G-actions on C*-algebras. We classify such spectral decompositions using
certain dense subspaces related to Marc Rieffel's theory of
square-integrability. There is a unique continuous spectral decomposition if
the group acts properly on the primitive ideal space of the C*-algebra. But
there are also examples of group actions without or with several inequivalent
spectral decompositions.Comment: 34 page
Forward coherent $\phi$-meson photoproduction from deuterons near
  threshold

Differential cross sections and decay asymmetries for coherent $\phi$-meson
photoproduction from deuterons were measured for the first time at forward
angles using linearly polarized photons at $E_{\gamma}$= 1.5-2.4 GeV. This
reaction offers a unique way to directly access natural-parity Pomeron dynamics
and gluon exchange at low energies. The cross sections at zero degrees increase
with increasing photon energy. The decay asymmetries demonstrate a complete
dominance of natural-parity exchange processes, showing that isovector
unnatural-parity $\pi$-meson exchange is small. Nevertheless the deduced cross
sections of $\phi$-mesons from nucleons contributed by isoscalar t-channel
exchange processes are not well described by the conventional Pomeron model.Comment: 14 pages, 6 figures. Final published versio
The Cool Accretion Disk in ESO 243-49 HLX-1: Further Evidence of an Intermediate-Mass Black Hole

With an inferred bolometric luminosity exceeding \(10^{42}\;erg\;s^{–1}\), HLX-1 in ESO 243-49 is the most luminous of ultraluminous X-ray sources and provides one of the strongest cases for the existence of intermediate-mass black holes. We obtain good fits to disk-dominated observations of the source with BHSPEC, a fully relativistic black hole accretion disk spectral model. Due to degeneracies in the model arising from the lack of independent constraints on inclination and black hole spin, there is a factor of 100 uncertainty in the best-fit black hole mass M. Nevertheless, spectral fitting of XMM-Newton observations provides robust lower and upper limits with \(3000\;M_{☉} \lesssim M \lesssim 3 × 10^{5} M_{☉}\), at 90% confidence, placing HLX-1 firmly in the intermediate-mass regime. The lower bound on M is entirely determined by matching the shape and peak energy of the thermal component in the spectrum. This bound is consistent with (but independent of) arguments based solely on the Eddington limit. Joint spectral modeling of the XMM-Newton data with more luminous Swift and Chandra observations increases the lower bound to \(6000\;M_☉\), but this tighter constraint is not independent of the Eddington limit. The upper bound on M is sensitive to the maximum allowed inclination i, and is reduced to \(M \lesssim 10^{5} M_{☉}\) if we limit \(i \lesssim 75°\).Astronom
Fractal Dimension Computation From Equal Mass Partitions

While the numerical methods which utilizes partitions of equal-size,
including the box-counting method, remain the most popular choice for computing
the generalized dimension of multifractal sets, two mass- oriented methods are
investigated by applying them to the one-dimensional generalized Cantor set. We
show that both mass-oriented methods generate relatively good results for
generalized dimensions for important cases where the box-counting method is
known to fail. Both the strengths and limitations of the methods are also
discussed.Comment: 11 pages, 11 figure
Search for supersymmetry with a photon, a lepton, and missing transverse
  momentum in pp collisions at sqrt(s) = 8 TeV

A search for supersymmetry involving events with at least one photon, one
electron or muon, and large missing transverse momentum has been performed by
the CMS experiment. The data sample corresponds to an integrated luminosity of
19.7 inverse femtobarns of pp collisions at sqrt(s) = 8 TeV, produced at the
CERN LHC. No excess of events is observed beyond expectations from standard
model processes. The result of the search is interpreted in the context of a
general model of gauge-mediated supersymmetry breaking, where the charged and
neutral winos are the next-to-lightest supersymmetric particles. Within this
model, winos with a mass up to 360 GeV are excluded at the 95% confidence
level. Two simplified models inspired by gauge-mediated supersymmetry breaking
are also examined, and used to derive upper limits on the production cross
sections of specific supersymmetric processes.Comment: Replaced with published version. Added journal reference and DOI. All
  figures and tables can be found at
  http://cms-results.web.cern.ch/cms-results/public-results/publications/SUS-14-013/index.htm
Electroexcitation of the $\Delta^{+}(1232)$ at low momentum transfer

We report on new p$(e,e^\prime p)\pi^\circ$ measurements at the
$\Delta^{+}(1232)$ resonance at the low momentum transfer region. The mesonic
cloud dynamics is predicted to be dominant and rapidly changing in this
kinematic region offering a test bed for chiral effective field theory
calculations. The new data explore the low $Q^2$ dependence of the resonant
quadrupole amplitudes while extending the measurements of the Coulomb
quadrupole amplitude to the lowest momentum transfer ever reached. The results
disagree with predictions of constituent quark models and are in reasonable
agreement with dynamical calculations that include pion cloud effects, chiral
effective field theory and lattice calculations. The reported measurements
suggest that improvement is required to the theoretical calculations and
provide valuable input that will allow their refinements
Relational development in psychotherapy from beginning to end : Connecting structural and interpersonal aspects

With the concept of the working alliance as a starting point, the aim is to explore relational development in psychotherapy in an experience-near and clinically relevant way. The approach is qualitative and hermeneutic phenomenological. Reflexive data from participants in psychotherapy is combined with observational data from the therapeutic interaction. Case studies are used to explore relational processes of development from different perspectives. The findings are presented in three separate articles. The first article is a single case study which explores the relational struggles early in a therapy process and the development of a therapeutic alliance in a case which started with relational strains but developed a good alliance and ended with good outcomes. The second article is a single case study which explores an ambiguous process of ending in an exceptional case. The third article explores the process of ending across twelve cases. A main finding is that patients and therapists seemed to share an ideal of reaching a concerted decision to end. The agreement seemed to be based on sensed affect, rather than for instance metacommunication
Characterisation and expression analysis of the Atlantic halibut (Hippoglossus hippoglossus L.) cytokines: IL-1b, IL-6, IL-11, IL-12b and IFNc

Genes encoding the five Atlantic halibut (Hippoglossus
hippoglossus L.) cytokines; interleukin (IL)-1b,
IL-6, IL-11b, IL-12bc, and interferon (IFN) c, were cloned
and characterised at a molecular level. The genomic organisation
of the halibut cytokine genes was similar to that
seen in mammals and/or other fish species. Several mRNA
instability motifs were found within the 30-untranslated
region (UTR) of all cytokine cDNA sequences. The putative
cytokine protein sequences showed a low sequence identity
with the corresponding homologues in mammals, avian and
other fish species. Nevertheless, important structural features
were presumably conserved such as the presence, or
absence in the case of IL-1b, of a signal peptide, secondary
structure and family signature motifs. The relative expression
pattern of the cytokine genes was analyzed in several
halibut organs, revealing a constitutive expression in both
lymphoid and non-lymphoid organs. Interestingly, the gills
showed a relatively high expression of IL-1b, IL-12bc and
IFNc. The real time RT-PCR data also showed that the
mRNA level of IL-1b, IL-6, IL-12bc and IFNc was high in
the thymus, while IL-11b was relatively highly expressed in
the posterior kidney and posterior gut. Moreover, the halibut
brain showed a relatively high level of IL-6 transcripts.
Anterior kidney leucocytes in vitro stimulated with imiquimod
showed a significant increase in mRNA level of the
five halibut cytokine genes. The sequence and characterisation
data presented here will be useful for further
investigation of both innate and adaptive immune responses
in halibut, and be helpful in the design of vaccines for the
control of various infectious diseases
Sequential Data Assimilation in High Dimensional Nonlinear Systems

Since its introduction in 1994, the ensemble Kalman filter (EnKF) has gained a lot
of attention as a tool for sequential data assimilation in many scientific areas. Due to
its computationally fast and easy to implement algorithm its popularity has increased
vastly over the last decades especially in the fields of oceanography and petroleum engineering.
Although EnKF has been successfully applied to many real world problems
it has a major drawback from a statistical point of view. The algorithm only converge to
the optimal solution if the system under consideration is linear and all random variables
describing the system are Gaussian.
There exist sequentialMonte Carlo methods (SMC) with correct asymptotic properties,
but both numerical and theoretical studies have shown that the number of samples
must increase exponentially with the dimension of the model to avoid a collapse of the
algorithm. For large scale geophysical systems, such as petroleum reservoirs or ocean
models, each sample requires the solution of a system of partial differential equations
on a large grid. The computational burden of solving these equations using numerical
schemes naturally puts an upper limit on the number of samples we can use in practice.
Hence these sequential Monte Carlo methods are not applicable, at least in their
simplest form, in large scale geophysical models.
This thesis explores the possibility of bridging the gap between EnKF and one of the
asymptotically correct SMC methods, known as particle filters, by extending already
known theory on Gaussian mixture filters. In addition a sensitivity analysis is carried
out for a new type of data in reservoir models.
A new approximative filter is developed by introducing an additional parameter in
the standard Gaussian mixture filter. The adaptive Gaussian mixture filter (AGM) consists
of two parameters and by choosing these differently the filter may run as EnKF, a
particle filter, or something in between. The method is tested on the Lorenz96 model for
comparison with EnKF and Gaussian mixture filters. Further comparison with EnKF is
made after running AGMon a 2D two-phase and a 3D three-phase petroleum reservoir.
We generalize AGMand compute error bounds and asymptotic properties using classical
approximation techniques before we explore the effects of estimating the first and
second order moments locally in Kalman type filters. By local estimation we mean local
in value and not in space. Two different approaches are suggested and applied to the
chaotic Lorenz63 model and a 1D reservoir model. Finally the sensitivity of reservoir
parameters to a new type of data, nanosensor observations, are calculated. Both analytical
and numerical results are provided. A simulation experiment is included from
which we can compute the resolution of the estimated parameters numerically
Freeze-out radii extracted from three-pion cumulants in pp, p–Pb and Pb–Pb collisions at the LHC

In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted using two-pion correlations, and characterize the system at the last stage of interaction, called kinetic freeze-out. In low-multiplicity collisions, unlike in high- multiplicity collisions, two-pion correlations are substantially altered by background correlations, e.g. mini-jets. Such correlations can be suppressed using three- pion cumulant correlations. We present the first measurements of the size of the system at freeze- out extracted from three-pion cumulant correlations in pp, p–Pb and Pb–Pb collisions at the LHC with ALICE. At similar multiplicity, the invariant radii extracted in p–Pb collisions are found to be 5–15% larger than those in pp, while those in Pb–Pb are 35–55% larger than those in p–Pb. Our measurements disfavor models which incorporate substantially stronger collective expansion in p–Pb as compared to pp collisions at similar multiplicity
Stress, psychosocial mediators, and cognitive mediators in parents of child cancer patients and cancer survivors: attention and working memory pathway perspectives

Objective: This review examines stress and its consequences on attention and working memory, stress symptoms in parents of child cancer patients and survivors and long-term consequences of stress on cognitive processing in parents of child cancer survivors. Method: Eligible studies were experimental, meta-analyses, and qualitative (2000–2013) from Pubmed, Medline, the Cochrane Library, PsycArticles, and Google Scholar. Results: We identified 92 eligible papers. They showed that elevated stress can impede performances on tasks requiring attention and memory patterns. In pediatric oncology, parental stress increased shortly after diagnosis involving depression and anxiety. Consequences of stress on cognitive performances were observed mainly among depressed individuals. As regards parents of child cancer survivors, female gender, low Socioeconomic Status (SES), and innate traits of anxiety/anger predicted the development of PTSS. Conclusion: Evidence of stress on attention and working memory processes in parents of child cancer survivors is insufficiently developed