most citedGaia Data Release 2. Summary of the contents and survey properties

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physics.optics2021★ 6 cited

Dynamics and stability conditions of semiconductor lasers under external optical feedback from both sides of the laser cavity

Mónica Far Brusatori, Nicolas Volet

To increase the spectral efficiency of coherent communication systems, lasers with ever-narrower linewidths are required as they enable higher-order modulation formats with lower b…

astro-ph.HE2021

A Linear Relation Between the Color Stretch and the Rising Color Slope of Type Ia Supernovae

Ping Chen, Subo Dong, Chris Ashall +34

Using data from the Complete Nearby () sample of Type Ia Supernovae (CNIa0.02), we discover a linear relation between two parameters derived from the color cur…

math.OA2021★ 3 cited

On the bundle of KMS state spaces for flows on a Z-absorbing C*-algebra

George A. Elliott, Yasuhiko Sato, Klaus Thomsen

We obtain three results: 1) Every compact simplex bundle with exactly one point in the fiber over 0 is the KMS bundle of a periodic flow on the Jiang-Su algebra. 2) Let A be a sepa…

physics.atom-ph2021★ 6 cited

Time-resolved quantum beats in the fluorescence of helium resonantly excited by XUV radiation

AC LaForge, A Benediktovitch, V Sukharnikov +18

We report on the observation of time-resolved quantum beats in the helium fluorescence from the transition 1s3p -> 1s2s, where the initial state is excited by XUV free-electron las…

astro-ph.SR2021★ 7 cited

Causal Interaction between the subsurface rotation rate residuals and radial magnetic field in different timescales

Fadil Inceoglu, Rachel Howe, Paul T. M. Loto'aniu

We studied the presence and spatiotemporal characteristics and evolution of the variations in the differential rotation rates and radial magnetic fields in the Schwabe and Quasi-bi…

physics.atom-ph2021★ 6 cited

Improved stabilization scheme for extreme ultraviolet quantum interference experiments

Daniel Uhl, Andreas Wituschek, Ulrich Bangert +18

Interferometric pump-probe experiments in the extreme ultraviolet (XUV) domain are experimentally very challenging due to the high phase stability required between the XUV pulses.…

astro-ph.SR2021★ 9 cited

The Kepler IRIS Catalog: Image subtraction light curves for 9,150 stars in and around the open clusters NGC 6791 and NGC 6819

Isabel L. Colman, Timothy R. Bedding, Daniel Huber +1

The four-year Kepler mission collected long cadence images of the open clusters NGC 6791 and NGC 6819, known as "superstamps." Each superstamp region is a 200-pixel square that cap…

physics.optics2021★ 3 cited

Polarization-independent optical spatial differentiation with a doubly-resonant one-dimensional guided-mode grating

Ali Akbar Darki, Søren Peder Madsen, Aurélien Dantan

We report on the design and experimental characterization of a suspended silicon nitride subwavelength grating possessing a polarization-independent guided-mode resonance at obliqu…

astro-ph.SR2021★ 21 cited

Mass transfer and tidally tilted pulsation in the Algol-type system TZ Dra

F. Kahraman Alicavus, G. Handler, F. Alicavus +6

Oscillating eclipsing Algols (oEAs) are remarkable systems which allow us to determine accurate fundamental stellar parameters (mass, radius) and probe the stellar interiors throug…

astro-ph.CO2021★ 7 cited

Carnegie Supernova Project: kinky -band light-curves of Type Ia supernovae

P. J. Pessi, E. Y. Hsiao, G. Folatelli +19

We present detailed investigation of a specific -band light-curve feature in Type Ia supernovae (SNe Ia) using the rapid cadence and high signal-to-noise ratio light-curves obta…

physics.ins-det2021★ 1 cited

Measurements of the neutron absorption in supermirror coatings

D. D. DiJulio, V. Santoro, A. Devishvili +5

In this work we report on measurements of neutron absorption in supermirror coatings. The measurements were carried out using the SuperADAM instrument at the Institut Laue-Langevin…

astro-ph.SR2021★ 10 cited

Chemo-dynamics and asteroseismic ages of seven metal-poor red giants from the Kepler field

Arthur Alencastro Puls, Luca Casagrande, Stephanie Monty +5

In this work we combine information from solar-like oscillations, high-resolution spectroscopy and Gaia astrometry to derive stellar ages, chemical abundances and kinematics for a…

cond-mat.quant-gas2021★ 83 cited

Transition from a polaronic condensate to a degenerate Fermi gas of heteronuclear molecules

Marcel Duda, Xing-Yan Chen, Andreas Schindewolf +5

The interplay of quantum statistics and interactions in atomic Bose--Fermi mixtures leads to a phase diagram markedly different from pure fermionic or bosonic systems. However, inv…

astro-ph.EP2021★ 74 cited

GJ 367b: A dense ultra-short period sub-Earth planet transiting a nearby red dwarf star

Kristine W. F. Lam, Szilárd Csizmadia, Nicola Astudillo-Defru +75

Ultra-short-period (USP) exoplanets have orbital periods shorter than one day. Precise masses and radii of USPs could provide constraints on their unknown formation and evolution p…

cs.SE2021★ 27 cited

A Manifesto for Applicable Formal Methods

Mario Gleirscher, Jaco van de Pol, Jim Woodcock

Formal methods were frequently shown to be effective and, perhaps because of that, practitioners are interested in using them more often. Still, these methods are far less applied…

cond-mat.quant-gas2021★ 3 cited

Universal Properties of Anisotropic Dipolar Bosons in Two Dimensions

J. Sánchez-Baena, L. A. Peña Ardila, G. Astrakharchik +1

The energy of ultra-dilute quantum many-body systems is known to exhibit a universal dependence on the gas parameter , with the density, the dimensionality of th…

astro-ph.CO2021★ 12 cited

Euclid: Covariance of weak lensing pseudo- estimates. Calculation, comparison to simulations, and dependence on survey geometry

R. E. Upham, M. L. Brown, L. Whittaker +102

An accurate covariance matrix is essential for obtaining reliable cosmological results when using a Gaussian likelihood. In this paper we study the covariance of pseudo- es…

econ.GN2021★ 19 cited

30.000 ways to reach 55% decarbonization of the European electricity sector

Tim T. Pedersen, Mikael Skou Andersen, Marta Victoria +1

Climate change mitigation is a global challenge that, however, needs to be resolved by national-level authorities, resembling a tragedy of the commons. This paradox is reflected at…

astro-ph.CO2021★ 14 cited

The cosmological simulation code

Jeppe Dakin, Steen Hannestad, Thomas Tram

We present version 1.0 of the cosmological simulation code , designed for simulations of large-scale structure formation. $\scriptstyle{\rm CO}N{\r…

astro-ph.SR2021★ 22 cited

THE BANANA PROJECT. VI. Close double stars are well aligned with noticeable exceptions; results from an ensemble study using apsidal motion and Rossiter-McLaughlin measurements

Marcus L. Marcussen, Simon H. Albrecht

Here we present an ensemble study of spin-orbit alignment in 51 close double star systems. We determine spin-orbit angles, obliquities, in 39 of these systems making use of recentl…

astro-ph.CO2021★ 19 cited

Pseudoscalar sterile neutrino self-interactions in light of Planck, SPT and ACT data

Mattia Atzori Corona, Riccardo Murgia, Matteo Cadeddu +4

We reassess the viability of a cosmological model including a fourth additional sterile neutrino species that self-interacts through a new pseudoscalar degree of freedom. We perfor…

astro-ph.EP2021

K2-99 revisited: a non-inflated warm Jupiter, and a temperate giant planet on a 522-d orbit around a subgiant

A. M. S. Smith, S. N. Breton, Sz. Csizmadia +29

We report new photometric and spectroscopic observations of the K2-99 planetary system. Asteroseismic analysis of the short-cadence light curve from K2's Campaign 17 allows us to r…

physics.atom-ph2021★ 11 cited

Propagation time and nondipole contributions to intraband high-harmonic generation

Simon Vendelbo Bylling Jensen, Lars Bojer Madsen

Applying the semiclassical model, we identify two connected effects in intraband high-harmonic generation (HHG): (1) propagation time from the point of emission at the source to th…

hep-ph2021

Comparison with experimental data of different theoretical approaches to high-energy electron bremsstrahlung including quantum coherence effects

A. Mangiarotti, P. Sona, U. I. Uggerhøj

The basic expressions for the differential nuclear bremsstrahlung cross section at high electron energy, as derived under different theoretical approaches and approximations to qua…