Showing 2020Show all

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astro-ph.SR2020★ 12 cited

Damping of slow surface kink modes in solar photospheric waveguides modeled by one-dimensional inhomogeneities

Shao-Xia Chen, Bo Li, Tom Van Doorsselaere +3

Given the recent interest in magnetohydrodynamic (MHD) waves in pores and sunspot umbrae, we examine the damping of slow surface kink modes (SSKMs) by modeling solar photospheric w…

nucl-ex2020★ 81 cited

Laser spectroscopy of neutron-rich Hg isotopes: Illuminating the kink and odd-even staggering in charge radii across the shell closure

T. Day Goodacre, A. V. Afanasjev, A. E. Barzakh +41

The mean-square charge radii of Hg () have been studied for the first time and those of Hg () remeasured by the applicat…

physics.app-ph2020★ 105 cited

Investigation of microwave loss induced by oxide regrowth in high-Q Nb resonators

J. Verjauw, A. Potočnik, M. Mongillo +16

The coherence of state-of-the-art superconducting qubit devices is predominantly limited by two-level-system defects, found primarily at amorphous interface layers. Reducing microw…

nlin.PS2020★ 4 cited

BLUES iteration applied to nonlinear ordinary differential equations for wave propagation and heat transfer

Jonas Berx, Joseph O. Indekeu

The iteration sequence based on the BLUES (Beyond Linear Use of Equation Superposition) function method for calculating analytic approximants to solutions of nonlinear ordinary dif…

cs.IR2020

Autoregressive Reasoning over Chains of Facts with Transformers

Ruben Cartuyvels, Graham Spinks, Marie-Francine Moens

This paper proposes an iterative inference algorithm for multi-hop explanation regeneration, that retrieves relevant factual evidence in the form of text snippets, given a natural…

physics.plasm-ph2020★ 18 cited

Electromagnetic ion cyclotron instability stimulated by the suprathermal ions in space plasmas: A quasi-linear approach

S. M. Shaaban, M. Lazar, R. Schlickeiser

In collision-poor space plasmas protons with an excess of kinetic energy or temperature in direction perpendicular to background magnetic field can excite the electromagnetic ion c…

astro-ph.SR2020★ 45 cited

TESS observations of Cepheid stars: first light results

E. Plachy, A. Pál, A. Bódi +33

We present the first analysis of Cepheid stars observed by the TESS space mission in Sectors 1 to 5. Our sample consists of 25 pulsators: ten fundamental mode, three overtone and t…

physics.atm-clus2020★ 4 cited

Vibrational angular momentum level densities of linear molecules

Klavs Hansen, Piero Ferrari

While linear molecules in their vibrational ground state cannot carry angular momentum around their symmetry axis, the presence of vibrational excitations can induce deformations a…

math.NA2020★ 15 cited

Kinetic-diffusion asymptotic-preserving Monte Carlo algorithm for Boltzmann-BGK in the diffusive scaling

Bert Mortier, Martine Baelmans, Giovanni Samaey

We develop a novel Monte Carlo strategy for the simulation of the Boltzmann-BGK model with both low-collisional and high-collisional regimes present. The presented solution to main…

math.NA2020★ 62 cited

Interior-point methods for the phase-field approach to brittle and ductile fracture

Jef Wambacq, Jacinto Ulloa, Geert Lombaert +1

The governing equations of the variational approach to brittle and ductile fracture emerge from the minimization of a non-convex energy functional subject to irreversibility constr…

astro-ph.HE2020

Gravitational-wave asteroseismology with f-modes from neutron star binaries at the merger phase

Harry Ho-Yin Ng, Patrick Chi-Kit Cheong, Lap-Ming Lin +1

Gravitational-wave signals from coalescing binary neutron stars can yield important information about the properties of nuclear-matter equation of state from the early part of the…

astro-ph.IM2020

MARVEL, a four-telescope array for high-precision radial-velocity monitoring

Gert Raskin, Christian Schwab, Bart Vandenbussche +23

Since the first discovery of a planet outside of our Solar System in 1995, exoplanet research has shifted from detecting to characterizing worlds around other stars. The TESS (NASA…

astro-ph.HE2020★ 76 cited

Stellar-mass microlensing of gravitational waves

Mark H. Y. Cheung, Joseph Gais, Otto A. Hannuksela +1

When gravitational waves pass through the nuclear star clusters of galactic lenses, they may be microlensed by the stars. Such microlensing can cause potentially observable beating…

physics.space-ph2020★ 3 cited

Kinetic Modeling of Magnetospheres

Stefano Markidis, Vyacheslav Olshevsky, Gabor Toth +4

This paper presents the state of the art of kinetic modeling techniques for simulating plasma kinetic dynamics in magnetospheres. We describe the critical numerical techniques for…

astro-ph.SR2020★ 10 cited

Mixed properties of magnetohydrodynamic waves undergoing resonant absorption in the cusp continuum

Marcel Goossens, Shao-Xia Chen, Michaël Geeraerts +2

Observations of magnetohydrodynamic (MHD) waves in the structured solar atmosphere have shown that these waves are damped and can thus contribute to atmospheric heating. In this pa…

astro-ph.SR2020★ 31 cited

Dynamically inflated wind models of classical Wolf-Rayet stars

L. G. Poniatowski, J. O. Sundqvist, N. D. Kee +6

Vigorous mass loss in the classical Wolf-Rayet (WR) phase is important for the late evolution and final fate of massive stars. We develop spherically symmetric time-dependent and s…

astro-ph.IM2020

Characterization of the optical properties of the buried contact of the JWST MIRI Si:As infrared blocked impurity band detectors

Ioannis Argyriou, George H. Rieke, Michael E. Ressler +2

The Mid-Infrared Instrument MIRI on-board the James Webb Space Telescope uses three Si:As impurity band conduction detector arrays. MIRI medium resolution spectroscopic measurement…

cs.NI2020★ 2 cited

Edge Computing Assisted Autonomous Flight for UAV: Synergies between Vision and Communications

Quan Chen, Hai Zhu, Lei Yang +3

Autonomous flight for UAVs relies on visual information for avoiding obstacles and ensuring a safe collision-free flight. In addition to visual clues, safe UAVs often need connecti…

astro-ph.SR2020★ 33 cited

A beta Cephei pulsator and a changing orbital inclination in the high-mass eclipsing binary system VV Orionis

John Southworth, D. M. Bowman, K. Pavlovski

We present an analysis of the high-mass eclipsing binary system VV Ori based on photometry from the TESS satellite. The primary star (B1V, 9.5 Msun) shows beta Cephei pulsations an…

nucl-ex2020★ 3 cited

Detailed low-spin spectroscopy of 65Ni via neutron capture reaction

C. Porzio, C. Michelagnoli, N. Cieplicka-Orynczak +17

An extended investigation of the low-spin structure of the Ni nucleus was performed at the Institut Laue-Langevin, Grenoble, via the neutron capture reaction Ni(n,…

cond-mat.mes-hall2020★ 15 cited

Robust Spin Interconnect with Isotropic Spin Dynamics in Chemical Vapour Deposited Graphene Layers and Boundaries

Dmitrii Khokhriakov, Bogdan Karpiak, Anamul Md. Hoque +3

The utilization of large-area graphene grown by chemical vapour deposition (CVD) is crucial for the development of scalable spin interconnects in all-spin-based memory and logic ci…

astro-ph.SR2020★ 340 cited

Gaia Early Data Release 3: The Gaia Catalogue of Nearby Stars

Gaia Collaboration, R. L. Smart, L. M. Sarro +420

We produce a clean and well-characterised catalogue of objects within 100\,pc of the Sun from the \G\ Early Data Release 3. We characterise the catalogue through comparisons to the…

astro-ph.GA2020★ 112 cited

Gaia Early Data Release 3: Acceleration of the solar system from Gaia astrometry

Gaia Collaboration, S. A. Klioner, F. Mignard +414

Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quali…

nucl-ex2020★ 148 cited

Charge radii of exotic potassium isotopes challenge nuclear theory and the magic character of

Á. Koszorús, X. F. Yang, W. G. Jiang +26

Nuclear charge radii are sensitive probes of different aspects of the nucleon-nucleon interaction and the bulk properties of nuclear matter; thus, they provide a stringent test and…