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For graphs $G$ and $H$, an $H$-coloring of $G$ is an edge-preserving mapping
from $V(G)$ to $V(H)$. Note that if $H$ is the triangle, then $H$-colorings are
equivalent to $3$-colorings. In this paper we are interested in the case that
$H$ is the five-vertex cycle $C_5$.
A minimal obstruction to $C_5$-coloring is a ... | 2404.11704 |
A new analysis of high-resolution data from the Atacama Large
Millimeter/submillimeter Array (ALMA) for 5 luminous or ultra-luminous infrared
galaxies gives a slope for the Kennicutt-Schmidt (KS) relation equal to
$1.74^{+0.09}_{\rm -0.07}$ for gas surface densities $\Sigma_{\rm
mol}>10^3\;M_\odot$ pc$^{-2}$ and an a... | 1907.05432 |
The recent coronavirus pandemic follows in its early stages an almost
exponential growth, with the number of cases quite well fit in time by
$N(t)\propto e^{\alpha t}$, in many countries. We analyze the rate $\alpha$ for
each country, starting from a threshold of 30 total cases and using the next 12
days, capturing t... | 2003.12417 |
In the present thesis we study absorption spectra of spin polarized isolated
systems. Thus we introduce the density functional theory (DFT) formalism and
its time dependent extension (TDDFT) together with the approximation used. In
particula the Casida formulation of TDDFT is described. The equations for the
descript... | 1208.3152 |
The Dyck language, which consists of well-balanced sequences of parentheses,
is one of the most fundamental context-free languages. The Dyck edit distance
quantifies the number of edits (character insertions, deletions, and
substitutions) required to make a given parenthesis sequence well-balanced. RNA
Folding involv... | 2112.05866 |
Let $d\ge1$ and $0<\alpha<2$. Consider the integro-differential operator \[
\mathcal{L}f(x)
=\int_{\mathbb{R}^{d}\backslash\{0\}}\left[f(x+h)-f(x)-\chi_{\alpha}(h)\nabla
f(x)\cdot
h\right]\frac{n(x,h)}{|h|^{d+\alpha}}\mathrm{d}h+\mathbf{1}_{\alpha>1}b(x)\cdot\nabla
f(x), \] where
$\chi_{\alpha}(h):=\mathbf{1}_{\alpha... | 1709.02836 |
Nitrogen hydrides such as NH$_3$ and N$_2$H$^+$ are widely used by Galactic
observers to trace the cold dense regions of the interstellar medium. In
external galaxies, because of limited sensitivity, HCN has become the most
common tracer of dense gas over large parts of galaxies. We provide the first
systematic measu... | 2308.01342 |
We present evidence of non-excimer-based secondary scintillation in gaseous
xenon, obtained using both the NEXT-White TPC and a dedicated setup. Detailed
comparison with first-principle calculations allows us to assign this
scintillation mechanism to neutral bremsstrahlung (NBrS), a process that has
been postulated t... | 2202.02614 |
Recent results suggest that quantum computers possess the potential to speed
up nonconvex optimization problems. However, a crucial factor for the
implementation of quantum optimization algorithms is their robustness against
experimental and statistical noises. In this paper, we systematically study
quantum algorithm... | 2212.02548 |
Layered ferromagnetic-piezoelectric composites show mechanical strain
mediated electromagnetic coupling. Here we discuss dielectric and piezoelectric
properties of ferrite-lead zirconate titanate (PZT) and lanthanum manganite-PZT
samples. Results of our investigations on dielectric and pyroelectric
properties of mult... | cond-mat/0401481 |
The stellar velocity distribution function (DF) in the solar vicinity is
re-examined using data from the SDSS APOGEE survey's DR16 and \emph{Gaia} DR2.
By exploiting APOGEE's ability to chemically discriminate with great
reliability the thin disk, thick disk and (accreted) halo populations, we can,
for the first time... | 2005.14534 |
The decay amplitude analyses of $B^\pm\to \pi^+ \pi^-\pi^\pm$ decays in the
Dalitz plot performed by LHCb indicate that CP asymmetry for the dominant
quasi-two-body decay $B^\pm\to\rho(770)^0\pi^\pm$ was found to be consistent
with zero in all three approaches for the $S$-wave component and that
CP-violation effects ... | 2211.03965 |
Let $S \subset \mathbb{R}^{n}$ be a nonempty set. Given $d \in [0,n)$ and a
cube $\overline{Q} \subset \mathbb{R}^{n}$ with $l=l(\overline{Q}) \in (0,1]$,
we show that if the $d$-Hausdorff content
$\mathcal{H}^{d}_{\infty}(\overline{Q} \cap S) < \overline{\lambda}l^{d}$ for
some $\overline{\lambda} \in (0,1)$, then t... | 2101.03556 |
Let $X$ be a non-negative random variable and let the conditional
distribution of a random variable $Y$, given $X$, be ${Poisson}(\gamma \cdot
X)$, for a parameter $\gamma \geq 0$. We identify a natural loss function such
that: 1) The derivative of the mutual information between $X$ and $Y$ with
respect to $\gamma$ i... | 1101.0302 |
We present novel tests of pre$-$main-sequence models based on individual
dynamical masses for the M7 binary LSPM J1314+1320AB. Joint analysis of our
Keck adaptive optics astrometric monitoring along with Very Long Baseline Array
radio data from a companion paper yield component masses of $0.0885\pm0.0006$
$M_{\odot}$... | 1605.07182 |
Observations of recurrent explosive events (EEs) with time scale of 3-5
minutes are reported. These EEs have been observed with the Interface Region
Imaging Spectrograph (IRIS) and have a spatial dimension of $\sim1.5"$ along
the slit. The spectral line profiles of \ion{C}{2}~$1335/1336$ \AA\ and
\ion{Si}{4}~$1394/14... | 1506.05327 |
We present and compare in this paper new photometric redshift catalogs of the
galaxies in three public fields: the NTT Deep Field, the HDF-N and the HDF-S.
Photometric redshifts have been obtained for thewhole sample, by adopting a
$\chi^2$ minimization technique on a spectral library drawn from the Bruzual
and Charl... | astro-ph/0009158 |
Hydrogen-like light muonic ions, in which one negative muon replaces all the
electrons, are extremely sensitive probes of nuclear structure, because the
large muon mass increases tremendously the wave function overlap with the
nucleus. Using pulsed laser spectroscopy we have measured three 2S-2P
transitions in the mu... | 2305.11679 |
The impact of cosmic reionization on the Ly$\alpha$ forest power spectrum has
recently been shown to be significant even at low redshifts ($z \sim 2$). This
memory of reionization survives cosmological time scales because high-entropy
mean-density gas is heated to $\sim 3\times10^4$ K by reionization, which is
inhomo... | 2106.14492 |
In the prevailing model of galaxy formation and evolution, the process of gas
accretion onto central galaxies undergoes a transition from cold-dominated to
hot-dominated modes. This shift occurs when the mass of the parent dark matter
halos exceeds a critical threshold known as $M_{shock}$. Moreover, cold gas
usually... | 2403.08631 |
Our goal was to characterize the distant gaseous and dust activity of comet
C\2012 S1 (ISON), inbound, from observations of H2O, CO and the dust coma in
the far-infrared and submillimeter domains. In this paper, we report
observations undertaken with the Herschel Space Observatory on 8 & 13 March
2013 (rh = 4.54 - 4.... | 1311.6452 |
We revisit, in an elementary way, the classical statement of various ``Main
Conjectures'' for $p$-class groups $\mathcal{H}_K$ and $p$-ramified torsion
groups $\mathcal{T}_K$ of abelian fields $K$, in the non semi-simple case $p
\mid [K : \mathbb{Q}]$. The classical ``algebraic'' definition of the $p$-adic
isotopic c... | 2112.02865 |
Terbium doped silicon oxynitride host matrix is suitable for various
applications such as light emitters compatible with CMOS technology or
frequency converter systems for photovoltaic cells. In this study, amorphous
Tb3+ ion doped nitrogen-rich silicon oxynitride (NRSON) thin films were
fabricated using a reactive m... | 1703.02096 |
During recent years, the renaissance of neural networks as the major machine
learning paradigm and more specifically, the confirmation that deep learning
techniques provide state-of-the-art results for most of computer vision tasks
has been shaking up traditional research in image processing. The same can be
said for... | 2105.01339 |
With the grand desert hypothesis, we have proposed to probe the
supersymmetric Grand Unified Theories (GUTs) at the future proton-proton (pp)
colliders and Hyper-Kamiokande experiment previously. In this paper, we study
the supersymmetric GUTs with gravity mediated supersymmetry breaking in
details. First, considerin... | 2208.05257 |
The main purpose of this paper is to study the generalized Hilbert operator
{equation*}
\mathcal{H}_g(f)(z)=\int_0^1f(t)g'(tz)\,dt
{equation*} acting on the weighted Bergman space $A^p_\om$, where the weight
function $\om$ belongs to the class $\R$ of regular radial weights and
satisfies the Muckenhoupt type co... | 1210.3315 |
We proceed to study the $CP$ asymmetry in the angular distributions of
$\tau\to K_S\pi\nu_\tau$ decays within a general effective field theory
framework including four-fermion operators up to dimension-six. It is found
that, besides the commonly considered scalar-vector interference, the
tensor-scalar interference ca... | 2107.12310 |
The near-Earth asteroid (NEA) 2015 TB145 had a very close encounter with
Earth at 1.3 lunar distances on October 31, 2015. We obtained 3-band
mid-infrared observations with the ESO VLT-VISIR instrument and visual
lightcurves during the close-encounter phase. The NEA has a (most likely)
rotation period of 2.939 +/- 0.... | 1610.08267 |
As in the case of soliton PDEs in 2+1 dimensions, the evolutionary form of
integrable dispersionless multidimensional PDEs is non-local, and the proper
choice of integration constants should be the one dictated by the associated
Inverse Scattering Transform (IST). Using the recently made rigorous IST for
vector field... | 1511.04436 |
A long time ago, Brochard and de Gennes predicted the possibility of
significantly decreasing the critical magnetic field of the Fredericksz
transition (the magnetic Fredericksz threshold) in a mixture of nematic liquid
crystals and ferromagnetic particles, the so-called ferronematics. This
phenomenon has rarely been... | 1708.00286 |
The precise localization of the repeating fast radio burst (FRB 121102) has
provided the first unambiguous association (chance coincidence probability
$p\lesssim3\times10^{-4}$) of an FRB with an optical and persistent radio
counterpart. We report on optical imaging and spectroscopy of the counterpart
and find that i... | 1701.01100 |
A study on the intermediate polar EX Hya is presented, based on simultaneous
photometry and high dispersion spectroscopic observations, during four
consecutive nights. The strong photometric modulation related to with the
67-min spin period of the primary star is clearly present, as well as the
narrow eclipses associ... | 1606.03734 |
We report the detection of fulvenallene ($c$-C$_5$H$_4$CCH$_2$) in the
direction of TMC-1 with the QUIJOTE line survey. Thirty rotational transitions
with $K_a$=0,1,2,3 and $J$=9-15 were detected. The best rotational temperature
fitting of the data is 9\,K and a derived column density is
(2.7$\pm$0.3)$\times$10$^{12}... | 2207.09369 |
Since the main cooling lines of the gas phase are important tracers of the
interstellar medium in Galactic and extragalactic sources, proper and detailed
understanding of their emission, and the ambient conditions of the emitting
gas, is necessary for a robust interpretation of the observations. With high
resolution ... | 0910.4937 |
Let $p$ be a homogeneous polynomial of degree $n$ in $n$ variables,
$p(z_1,...,z_n) = p(Z)$, $Z \in C^{n}$. We call such a polynomial $p$ {\bf
H-Stable} if $p(z_1,...,z_n) \neq 0$ provided the real parts $Re(z_i) > 0, 1
\leq i \leq n$. This notion from {\it Control Theory} is closely related to the
notion of {\it Hyp... | 0711.3496 |
In this paper, we prove Dahmen and Beukers' conjecture that the number of
integral Lam\'{e} equations with index $n$ modulo scalar equivalence with the
monodromy group dihedral $D_{N}$ of order $2N$ is given by
\[L_{n}(N)=\frac{1}{2}\left( \frac{n(n+1)\Psi(N)}{24}-\left( a_{n}%
\phi(N)+b_{n}\phi(\tfrac{N}{2}) \right)... | 2105.04734 |
We study the supersymmetric extension of $SO(10)$-inspired thermal
leptogenesis showing the constraints on neutrino parameters and on the reheat
temperature $T_{\rm RH}$ that derive from the condition of successful
leptogenesis from next-to-lightest right handed (RH) neutrinos ($N_2$) decays
and the more stringent on... | 1512.06739 |
The (generalised) Mellin transforms of certain Chebyshev and Gegenbauer
functions based upon the Chebyshev and Gegenbauer polynomials, have polynomial
factors $p_n(s)$, whose zeros lie all on the `critical line' $\Re\,s=1/2$ or on
the real axis (called critical polynomials). The transforms are identified in
terms of ... | 1703.09251 |
We revisit the direct sum questions in communication complexity which asks
whether the resource needed to solve $n$ communication problems together is
(approximately) the sum of resources needed to solve these problems separately.
Our work starts with the observation that Dinur and Meir's fortification lemma
can be g... | 2208.07730 |
It is well known that any graph admits a crossing-free straight-line drawing
in $\mathbb{R}^3$ and that any planar graph admits the same even in
$\mathbb{R}^2$. For a graph $G$ and $d \in \{2,3\}$, let $\rho^1_d(G)$ denote
the smallest number of lines in $\mathbb{R}^d$ whose union contains a
crossing-free straight-li... | 1607.06444 |
We present a collection of $\mathrm{CP}$-odd observables for the process
$pp\to t\,\left(\rightarrow b {\ell}^+ \nu_{\ell}\right)
\bar{t}\,\left(\rightarrow \bar{b} {\ell}^-{\bar{\nu}}_{\ell}\right)\,H$ that
are linearly dependent on the scalar ($\kappa_t$) and pseudoscalar
($\tilde{\kappa}_t$) top-Higgs coupling and... | 1603.03632 |
This paper presents a study of the chemical compositions in cool gas around a
sample of 27 intermediate-redshift galaxies. The sample comprises 13 massive
quiescent galaxies at z=0.40-0.73 probed by QSO sightlines at projected
distances d=3-400 kpc, and 14 star-forming galaxies at z=0.10-1.24 probed by
QSO sightlines... | 1611.09874 |
Let $f = P[F]$ denote the Poisson integral of $F$ in the unit disk
$\mathbb{D}$ with $F$ is an absolute continuous in the unit circle $\mathbb{T}$
and $\dot{F}\in L^p(\mathbb{T})$, where $\dot{F}(e^{it}) = \frac{d}{dt}
F(e^{it})$ and $p \in [1,\infty]$. Recently, Chen et al. (J. Geom. Anal., 2021)
extended Zhu's resu... | 2302.09623 |
In the article [GS96], Gillet and Soul\'e define a weight complex on the
category of Voevodsky motives over a field of characteristic 0. In [Bon07],
Bondarko generalizes this construction for any f-category with a bounded weight
structure, as is the case for Beilinson motives (following Cisinski-D\'eglise ;
[CD09]). ... | 1010.5469 |
We present the discovery of a nuclear transient with the Caltech-NRAO Stripe
82 Survey (CNSS), a dedicated radio transient survey carried out with the Karl
G. Jansky Very Large Array (VLA). This transient, CNSS J001947.3+003527,
exhibited a turn-on over a timescale of $\lesssim$1 yr, increasing in flux
density at 3 G... | 1910.11912 |
We present a framework to obtain photometric redshifts (photo-zs) for
gamma-ray burst afterglows. Using multi-band photometry from GROND and
Swift/UVOT, photo-zs are derived for five GRBs for which spectroscopic
redshifts are not available. We use UV/optical/NIR data and synthetic
photometry based on afterglow observ... | 1011.1205 |
Let $g$ be locally homogeneous (LH) Riemannian metric on a differentiable
compact manifold $M$, and $K$ be a compact Lie group endowed with an $\mathrm
{ad}$-invariant inner product on its Lie algebra $\mathfrak{k}$. A connection
$A$ on a principal $K$-bundle $p:P\to M$ on $M$ is locally homogeneous if for
any two po... | 1811.07995 |
We present a detailed analysis from new multi-wavelength observations of the
exceptional galaxy cluster ACT-CL J0102-4915 "El Gordo," likely the most
massive, hottest, most X-ray luminous and brightest Sunyaev-Zeldovich (SZ)
effect cluster known at z>0.6. The Atacama Cosmology Telescope collaboration
discovered El Go... | 1109.0953 |
We present near-infrared (NIR) broadband (0.80--2.42 $\mu$m) spectroscopy of
two low mass X-ray binaries: V404 Cyg and Cen X-4. One important parameter
required in the determination of the mass of the compact objects in these
systems is the binary inclination. We can determine the inclination by modeling
the ellipsoi... | 1004.5358 |
We investigate the asymmetry of the scattering cross section of radiation
around Ly$\alpha$ by atomic hydrogen, which may be applied to analyses of
scattering media with high column neutral hydrogen densities including damped
Ly$\alpha$ absorption systems of quasars. The exact scattering cross section is
given by the... | astro-ph/0308083 |
Using 281 pb^-1 of data collected with the CLEO-c detector, we report on
first observations and new measurements of Cabibbo-suppressed decays of D
mesons to 2, 3, 4, and 5 pions. Branching fractions of previously unobserved
modes are measured to be: B(D^0\to
pi^+pi^-pi^0pi^0)=(9.9\pm0.6\pm0.7\pm0.2\pm0.1)x10^-3,
B(D^... | hep-ex/0512063 |
For a strongly elliptic pseudodifferential operator $L$ of order $2a$
($0<a<1$) with real kernel, we show an integration-by-parts formula for
solutions of the homogeneous Dirichlet problem, in the model case where the
operator is $x$-independent with homogeneous symbol, considered on the
halfspace $R^n_+$. The new as... | 2012.13964 |
We analyze two classic variants of the Traveling Salesman Problem using the
toolkit of fine-grained complexity. Our first set of results is motivated by
the Bitonic TSP problem: given a set of $n$ points in the plane, compute a
shortest tour consisting of two monotone chains. It is a classic
dynamic-programming exerc... | 1607.02725 |
Measurements of gas mass in protoplanetary gas disks form the basis for
estimating the conditions of planet formation. Among the most important
constraints derived from disk diagnostics are the abundances of gas-phase
species critical for understanding disk chemistry. Towards this end, we present
direct line-of-sight... | 2102.12558 |
We study approximate-near-neighbor data structures for time series under the
continuous Fr\'echet distance. For an attainable approximation factor $c>1$ and
a query radius $r$, an approximate-near-neighbor data structure can be used to
preprocess $n$ curves in $\mathbb{R}$ (aka time series), each of complexity
$m$, t... | 2008.09406 |
Matrix scaling is a simple to state, yet widely applicable linear-algebraic
problem: the goal is to scale the rows and columns of a given non-negative
matrix such that the rescaled matrix has prescribed row and column sums.
Motivated by recent results on first-order quantum algorithms for matrix
scaling, we investiga... | 2109.15282 |
We report novel cosmological constraints obtained from cosmic voids in the
final BOSS DR12 dataset. They arise from the joint analysis of geometric and
dynamic distortions of average void shapes (i.e., the stacked void-galaxy
cross-correlation function) in redshift space. Our model uses tomographic
deprojection to in... | 2007.07895 |
In this work, a flavour theory of a neutrino mass model based on $ A_{4} $
symmetry is considered to explain the phenomenology of neutrino mixing. The
spontaneous symmetry breaking of $ A_{4} $ symmetry in this model leads to
tribimaximal mixing in the neutrino sector at a leading order. We consider the
effect of $ Z... | 2106.12503 |
Two very closely related Rahman polynomials are constructed explicitly as the
left eigenvectors of certain multi-dimensional discrete time Markov chain
operators $K_n^{(i)}({\boldsymbol x},{\boldsymbol y};N)$, $i=1,2$. They are
convolutions of an $n+1$-nomial distribution $W_n({\boldsymbol x};N)$ and an
$n$-tuple of ... | 2310.17853 |
The iterative proportional fitting procedure, introduced in 1937 by Kruithof,
aims to adjust the elements of an array to satisfy specified row and column
sums. Given a rectangular non-negative matrix $X_0$ and two positive marginals
$a$ and $b$, the algorithm generates a sequence of matrices $(X_n)$ starting at
$X_0$... | 1606.09126 |
We introduce a family of random measures $M_{H,T} (d t)$, namely log S-fBM,
such that, for $H>0$, $M_{H,T}(d t) = e^{\omega_{H,T}(t)} d t$ where
$\omega_{H,T}(t)$ is a Gaussian process that can be considered as a stationary
version of an $H$-fractional Brownian motion. Moreover, when $H \to 0$, one has
$M_{H,T}(d t) ... | 2201.09516 |
We use a well-motivated galaxy formation framework to predict stellar masses,
star formation rates (SFR), and ultraviolet (UV) luminosities of galaxy
populations at redshifts $z\in 5-16$, taking into account stochasticity of SFR
in a controlled manner. We demonstrate that the model can match observational
estimates o... | 2405.04578 |
In this work, we obtain the following new results.
1. Given a sequence $D=((h_1,s_1), (h_2,s_2) ..., (h_n,s_n))$ of number
pairs, where $s_i>0$ for all $i$, and a number $L_h$, we propose an O(n)-time
algorithm for finding an index interval $[i,j]$ that maximizes
$\frac{\sum_{k=i}^{j} h_k}{\sum_{k=i}^{j} s_k}$ subj... | 0809.2097 |
We study the quasi-two-body decays $B\to D^*h \to D\pi h$ with $h=(\pi, K)$
in the perturbative QCD approach and focus on the virtual contributions from
the off-shell $D^{\ast}(2007)^0$ and $D^{\ast}(2010)^{\pm}$ in the four
measured decays $\bar B^0 \to D^0\pi^+\pi^-$, $\bar B^0\to D^0\pi^+K^-$, $B^-
\to D^+\pi^-\pi... | 1812.08524 |
The $d$-wave pseudospin current order ($d$PSCO) with staggered circulating
pseudospin current has been proposed as the hidden electronic order to describe
the unexpected breaking of spatial symmetries in stoichiometric
Sr$_{2}$IrO$_{4}$ and the unconventional pseudogap phenomena in electron doped
Sr$_{2}$IrO$_{4}$. H... | 2310.02119 |
We study the dust depletion pattern in eight well separated components of the
z=1.973, logN(HI)=20.83, damped Lyman-alpha system toward Q0013-004, four of
which have detectable H2 absorption. The apparent correlation between the
abundance ratios [Fe/S] and [Si/S] in the components indicates that the
abundance pattern... | astro-ph/0201477 |
We discuss, study, and compare experimentally three methods for solving the
system of algebraic equations $\mathbb{A}^\alpha \bf{u}=\bf{f}$, $0< \alpha
<1$, where $\mathbb{A}$ is a symmetric and positive definite matrix obtained
from finite difference or finite element approximations of second order
elliptic problems... | 1805.00711 |
We present sensitive 1-3 GHz ATCA radio continuum observations of the
hitherto unresolved star forming region known as either IRAS14482-5857 or
PMN1452-5910. At radio continuum frequencies, this source is characterised by a
"filled-bubble" structure reminiscent of a classical HII region, dominated by
three point sour... | 1411.7054 |
Let $(M, g)$ denote a cosmological spacetime describing the evolution of a
universe which is isotropic and homogeneous on large scales, but highly
inhomogeneous on smaller scales. We consider two past lightcones, the first,
$\mathcal{C}^-_L(p, g)$, is associated with the physical observer $p\in\,M$ who
describes the ... | 2101.12698 |
Magic wavelengthsfor the $7S_{1/2}-7P_{1/2,3/2}$ transitions in Fr were
reported by Dammalapati \textit{et al.} in [Phys. Rev. A 93, 043407 (2016)].
These $\lambda_{\rm{magic}}$ were determined by plotting dynamic
polarizabilities ($\alpha$) of the involved states with the above transitions
against a desired range of... | 1608.02073 |
We discuss the dynamics of multiple scalar fields and the possibility of
realistic inflation in the maximal gauged supergravity. In this paper, we
address this problem in the framework of recently discovered 1-parameter
deformation of ${\rm SO}(4,4)$ and ${\rm SO}(5,3)$ dyonic gaugings, for which
the base point of th... | 1502.01378 |
Dirac electrons with a zero-gap state (ZGS) in organic conductor
$\alpha$-(BEDT-TTF)$_2$I$_3$ result from a fine tuning of the seven nearest
neighbors transfer integrals ($a_1, a_2, a_3, b_1, b_2, b_3, b_4$) between the
four molecules of the unit cell. In this work we show that for given moduli
$|a_1|,...|b_4|$, the ... | 1502.01167 |
A detector has been constructed for measuring ion mobilities of gas mixtures
at atmospheric pressure and room temperature. The detector consists of a
standard triple GEM amplification region and a drift region where ions drift. A
method has been developed to measure the ions' arrival time at a cathode
wire-grid by di... | 1804.10288 |
We present a study of the CO isotopologues and the high-density tracers
H$_{2}$CO, HCO$^{+}$, and CS in Class 0/I proto-brown dwarfs (proto-BDs). We
have used the IRAM 30m telescope to observe the $^{12}$CO (2-1), $^{13}$CO
(2-1), C$^{18}$O (2-1), C$^{17}$O (2-1), H$_{2}$CO (3-2), HCO$^{+}$ (3-2), and
CS (5-4) lines ... | 1811.01722 |
We study the single electron spectra from $D-$ and $B-$meson semileptonic
decays in Au+Au collisions at $\sqrt{s_{\rm NN}}=$200, 62.4, and 19.2 GeV by
employing the parton-hadron-string dynamics (PHSD) transport approach that has
been shown to reasonably describe the charm dynamics at RHIC and LHC energies
on a micro... | 1605.07887 |
Given a graph $F$ and an integer $r \ge 2$, a partition $\widehat{F}$ of the
edge set of $F$ into at most $r$ classes, and a graph $G$, define $c_{r,
\widehat{F}}(G)$ as the number of $r$-colorings of the edges of $G$ that do not
contain a copy of $F$ such that the edge partition induced by the coloring is
isomorphic... | 1605.08013 |
We explore the behaviour of [CII]-157.74um forbidden fine-structure line
observed in a sample of 28 galaxies selected from ~50deg^2 of the H-ATLAS
survey. The sample is restricted to galaxies with flux densities higher than
S_160um>150mJy and optical spectra from the GAMA survey at 0.02<z<0.2. Far-IR
spectra centred ... | 1503.01128 |
The surface-density profiles of dense filaments, in particular those traced
by dust emission, appear to be well fit with Plummer profiles, i.e.
Sigma(b)=Sigma_B+Sigma_O{1+[b/w_O]^2}^{[1-p]/2}. Here Sigma_B is the background
surface-density; Sigma_B+Sigma_O is the surface-density on the filament spine;
b is the impact... | 2109.11924 |
Let $\Sigma$ be a compact oriented 2-manifold (possibly with boundary), and
let $\mathcal G_{\Sigma}$ be the linear span of free homotopy classes of closed
oriented curves on $\Sigma$ equipped with the Goldman Lie bracket $[\cdot,
\cdot]_\mathrm{Goldman}$ defined in terms of intersections of curves. A theorem
of Gold... | 2210.08944 |
We develop and evaluate point and interval estimates for the random effects
$\theta_i$, having made observations $y_i|\theta_i\stackrel{\m
athit{ind}}{\sim}N[\theta_i,V_i],i=1,...,k$ that follow a two-level Normal
hierarchical model. Fitting this model requires assessing the Level-2 variance
$A\equiv\operatorname {Va... | 1108.3234 |
We consider the reduced quasi-classical self-dual Yang-Mills equation (rYME)
and two recently found (Jahnov\'{a} and Voj\v{c}\'{a}k, 2024) invertible
recursion operators $\mathcal{R}^q$ and $\mathcal{R}^m$ for its full-fledged
(in a given differential covering) nonlocal symmetries. We introduce a
$\mathbb{Z}$-grading... | 2407.00622 |
We use FIRE-2 simulations to examine 3-D variations of gas-phase elemental
abundances of [O/H], [Fe/H], and [N/H] in 11 Milky Way (MW) and M31-mass
galaxies across their formation histories at $z \leq 1.5$ ($t_{\rm lookback}
\leq 9.4$ Gyr), motivated by characterizing the initial conditions of stars for
chemical tagg... | 2102.06220 |
Let $G$ be a graph and $t$ a nonnegative integer. Suppose $f$ is a mapping
from the vertex set of $G$ to $\{1,2,\dots, k\}$. If, for any vertex $u$ of
$G$, the number of neighbors $v$ of $u$ with $f(v)=f(u)$ is less than or equal
to $t$, then $f$ is called a $t$-relaxed $k$-coloring of $G$. And $G$ is said
to be $(k,... | 2106.07398 |
We consider the Laplacian on a class of smooth domains $\Omega\subset
\mathbb{R}^{\nu}$, $\nu\ge 2$, with attractive Robin boundary conditions: \[
Q^\Omega_\alpha u=-\Delta u, \quad \dfrac{\partial u}{\partial n}=\alpha u
\text{ on } \partial\Omega, \ \alpha>0, \] where $n$ is the outer unit normal,
and study the asy... | 1502.00877 |
We present measurements of the branching fractions of eight $\overline
B{}^0\to D^{(*)+} K^- K^{(*)0}_{(S)}$, $B^{-}\to D^{(*)0} K^- K^{(*)0}_{(S)}$
decay channels. The results are based on data from SuperKEKB electron-positron
collisions at the $\Upsilon(4S)$ resonance collected with the Belle II
detector, correspon... | 2406.06277 |
We perform SubHalo Abundance Matching (SHAM) studies on UNIT simulations with
\{$\sigma, V_{\rm ceil}, v_{\rm smear}$\}-SHAM and \{$\sigma, V_{\rm
ceil},f_{\rm sat}$\}-SHAM. They are designed to reproduce the clustering on
5--30$\,\hmpc$ of Luminous Red Galaxies (LRGs), Emission Line Galaxies (ELGs)
and Quasi-Stellar... | 2306.06313 |
Alspach [ Bull. Inst. Combin. Appl., 52 (2008), pp. 7-20] defined the maximal
matching sequencibility of a graph $G$, denoted $ms(G)$, to be the largest
integer $s$ for which there is an ordering of the edges of $G$ such that every
$s$ consecutive edges form a matching. Alspach also proved that $ms(K_n) =
\bigl\lfloo... | 1711.05013 |
We investigate the physical origins of the Balmer decrement anomalies in
GS-NDG-9422 (Cameron et al. 2023) and RXCJ2248-ID (Topping et al. 2024)
galaxies at $z\sim 6$ whose $\mathrm{H}\alpha/\mathrm{H}\beta$ values are
significantly smaller than $2.7$, the latter of which also shows anomalous
$\mathrm{H}\gamma/\mathr... | 2403.20118 |
The Standard Model (SM) does not contain by definition any new physics (NP)
contributions to any observable but contains four CKM parameters which are not
predicted by this model. We point out that if these four parameters are
determined in a global fit that includes processes which are infected by NP,
the resulting ... | 2209.03968 |
Lyman-$\alpha$ forest data are known to be a good probe of the small scale
matter power. In this paper, we explore the redshift evolution of the
observable effective optical depth $\tau_{\rm eff} (z)$ from the Lyman-$\alpha$
data as a discriminator between dark matter models that differ from the
$\Lambda$CDM model on... | 2101.09917 |
We determine the source of the diffuse [CII] emission by studying its spatial
(radial and vertical) distributions. We used the HIFI [CII] Galactic survey
(GOT C+), along with HI, 12CO, and 13CO data toward 354 lines of sight, and
several HIFI [CII] and [CI] position-velocity maps. We quantified the emission
in each s... | 1409.4788 |
Supernova (SN) 1987A was a peculiar H-rich event with a long-rising (LR)
light curve (LC), stemming from a compact blue supergiant star (BSG). Only a
few similar events have been presented in the literature. We present new data
for a sample of 6 LR Type II SNe (SNe II), 3 of which were discovered and
observed by the ... | 1601.07368 |
Recent BaBar limits on $\br(\Upsilon(3S)\to \gam a\to \gam \tau^+\tau^-)$ and
$\br(\Upsilon(3S)\to \gam a\to \gam \mu^+\mu^-)$ provide increased constraints
on the $a b\anti b$ coupling of a CP-odd Higgs boson, $a$, with
$m_a<M_{\Upsilon(3S)}$. We extract these limits from the BaBar data and compare
to the limits pre... | 1002.1971 |
We investigate the size complexity of proofs in $Res(s)$ -- an extension of
Resolution working on $s$-DNFs instead of clauses -- for families of
contradictions given in the {\em unusual binary} encoding. A motivation of our
work is size lower bounds of refutations in Resolution for families of
contradictions in the u... | 1809.02843 |
We report the detection of spatially resolved CO(1-0) emission in the z~3.4
submillimeter galaxies (SMGs) SMM J09431+4700 and SMM J13120+4242, using the
Expanded Very Large Array (EVLA). SMM J09431+4700 is resolved into the two
previously reported millimeter sources H6 and H7, separated by ~30kpc in
projection. We de... | 1105.4177 |
In this work, we investigate the surface thermophysical properties (thermal
emissivity, thermal inertia, roughness fraction and geometric albedo) of
asteroid (99942) Apophis, using the currently available thermal infrared
observations of CanariCam on Gran Telescopio CANARIAS and far-infrared data by
PACS of Herschel,... | 1703.06689 |
The hidden-charmed pentaquark $P_c(4450)$ and the charmonium-like state
$Y(4274)$ are investigated as a $\bar{D}^*\Sigma_c$ and a
$D_s\bar{D}_{s0}(2317)$ molecular state, respectively. The spin parities of
these two states cannot be well understood if only S-wave $\bar{D}^*\Sigma_c$
and $D_s\bar{D}_{s0}(2317)$ intera... | 1607.03223 |
The Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) has been conducted
over a five-year period at the CFHT with the MegaCam instrument, totaling 450
nights of observations. The Wide Synoptic Survey is one component of the
CFHTLS, covering 155 square degrees in four patches of 23 to 65 square degrees
through the... | 1709.04308 |
We examine the Standard Model under the electroweak symmetry group
$U_{EW}(2)$ subject to the Lie algebra condition $\mathfrak{u}_{EW}(2)\not\cong
\mathfrak{su}_{I}(2)\oplus \mathfrak{u}_{Y}(1)$. Physically, the condition
ensures that all electroweak gauge bosons interact with each other prior to
symmetry breaking. T... | 1709.04346 |
We introduce a new technique to constrain the line-of-sight integrated
electron density of our Galactic halo $\text{DM}_\text{MW,halo}$ through
analysis of the observed dispersion measure distributions of pulsars
$\text{DM}_\text{pulsar}$ and fast radio bursts $\text{DM}_\text{FRB}$. We
model these distributions, cor... | 2005.06256 |
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