Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute of Astrophysics and Space SciencesPT1.2k papers
- Centre National de la Recherche ScientifiqueFR1.1k papers
- Centro de Astrofísica da Universidade do PortoPT1k papers
- University of GenevaCH636 papers
- Instituto de Astrofísica de CanariasES591 papers
- Universidad de La LagunaES520 papers
- European Southern ObservatoryCL446 papers
- Aix-Marseille UniversitéFR434 papers
- University of LisbonPT430 papers
- Institut d'Astrophysique de ParisFR425 papers
- Leiden UniversityNL398 papers
- University of CambridgeGB398 papers
212 papers · 1 filter
Stability Conditions for the Horndeski Scalar Field Gravity Model
Cláudio Gomes, Orfeu Bertolami
We constrain the viable models of Horndeski gravity, written in its equivalent Generalised Galileon version, by resorting to the Witten positive energy theorem. We find that the fr…
Dust polarized emission observations of NGC 6334; BISTRO reveals the details of the complex but organized magnetic field structure of the high-mass star-forming hub-filament network
D. Arzoumanian, R. Furuya, T. Hasegawa +145
[Abridged] Filaments and hubs have received special attention recently thanks to studies showing their role in star formation. While the column density and velocity structures of b…
Computing Nash equilibria for integer programming games
Margarida Carvalho, Andrea Lodi, João Pedro Pedroso
The recently defined class of integer programming games (IPG) models situations where multiple self-interested decision makers interact, with their strategy sets represented by a f…
Stellar chromospheric activity of 1,674 FGK stars from the AMBRE-HARPS sample I. A catalogue of homogeneous chromospheric activity
J. Gomes da Silva, N. C. Santos, V. Adibekyan +9
We present a catalogue of homogeneous determined chromospheric emission (CE), stellar atmospheric parameters and ages for 1,674 FGK main sequence (MS), subgiant, and giant stars. T…
Optical emission lines in the most massive galaxies: morphology, kinematics and ionisation properties
I. Pagotto, D. Krajnović, M. den Brok +5
To better characterize the upper end of the galaxy stellar mass range, the MUSE Most Massive Galaxies (M3G) Survey targeted the most massive galaxies (M M) foun…
Prospects for Galactic and stellar astrophysics with asteroseismology of giant stars in the Continuous Viewing Zones and beyond
J. Ted Mackereth, Andrea Miglio, Yvonne Elsworth +30
The NASA- mission presents a treasure trove for understanding the stars it observes and the Milky Way, in which they reside. We present a first look at the prospects for…
Observations of magnetic fields surrounding LkH 101 taken by the BISTRO survey with JCMT-POL-2
Nguyen Bich Ngoc, Pham Ngoc Diep, Harriet Parsons +146
We report the first high spatial resolution measurement of magnetic fields surrounding LkH 101, a part of the Auriga-California molecular cloud. The observations were taken with…
Engineered magnetization and exchange stiffness in direct-write Co-Fe nanoelements
S. A. Bunyaev, B. Budinska, R. Sachser +10
Media with engineered magnetization are essential building blocks in superconductivity, magnetism and magnon spintronics. However, the established thin-film and lithographic techni…
Dissecting a resonance wedge on heteroclinic bifurcations
Alexandre A. P. Rodrigues
This article studies routes to chaos occurring within a resonance wedge for a 3-parametric family of differential equations acting on a 3-sphere. Our starting point is an autonomou…
On Euler's rotation theorem
P. Gothen, A. Guedes de Oliveira
It is well known that a rigid motion of the Euclidean plane can be written as the composition of at most three reflections. It is perhaps not so widely known that a similar result…
Is FFT Fast Enough for Beyond-5G Communications?
Saulo Queiroz, João P. Vilela, Edmundo Monteiro
In this paper, we study the impact of computational complexity on the throughput limits of the {\color{black}fast Fourier transform (FFT)} algorithm for {\color{black}orthogonal fr…
Principal bundles on 2-dimensional CW-complexes with disconnected structure group
André Oliveira
Given any topological group , the topological classification of principal -bundles over a finite CW-complex is long-known to be given by the set of free homotopy classes…
Chaotic transients and hysteresis in an dynamo model
Dalton N. Oliveira, Erico L. Rempel, Roman Chertovskih +1
The presence of chaotic transients in a nonlinear dynamo is investigated through numerical simulations of the 3D magnetohydrodynamic equations. By using the kinetic helicity of the…
The perturbative CFT optical theorem and high-energy string scattering in AdS at one loop
António Antunes, Miguel S. Costa, Tobias Hansen +2
We derive an optical theorem for perturbative CFTs which computes the double discontinuity of conformal correlators from the single discontinuities of lower order correlators, in a…
Fundamental physics with Espresso: Towards an accurate wavelength calibration for a precision test of the fine-structure constant
Tobias M. Schmidt, Paolo Molaro, Michael T. Murphy +56
Observations of metal absorption systems in the spectra of distant quasars allow to constrain a possible variation of the fine-structure constant throughout the history of the Univ…
HIRES, the high-resolution spectrograph for the ELT
Alessandro Marconi, Manuel Abreu, Vardan Adibekyan +99
HIRES will be the high-resolution spectrograph of the European Extremely Large Telescope at optical and near-infrared wavelengths. It consists of three fibre-fed spectrographs prov…
ESPRESSO high resolution transmission spectroscopy of WASP-76b
H. M. Tabernero, M. R. Zapatero Osorio, R. Allart +87
Aims. We report on ESPRESSO high-resolution transmission spectroscopic observations of two primary transits of the highly-irradiated, ultra-hot Jupiter-size planet WASP-76b. We inv…
The Gaia-ESO Survey: Oxygen abundance in the Galactic thin and thick disks
Mariagrazia Franchini, Carlo Morossi, Paolo Di Marcantonio +18
We analyze the oxygen abundances of a stellar sample representative of the two major Galactic populations: the thin and thick disks. The aim is to investigate the differences betwe…
Design Approach for Additive Manufacturing in Spare Part Supply Chains
Filipe M. de Brito, Gélson da Cruz Júnior, Enzo M. Frazzon +2
In the current industrial revolution, additive manufacturing (AM) embodies a promising technology that can enhance the effectiveness, adaptability, and competitiveness of supply ch…
Automated approach to measure stellar inclinations: validation through large-scale measurements on the red giant branch
C. Gehan, B. Mosser, E. Michel +1
Measuring stellar inclinations is fundamental to understand planetary formation and dynamics as well as physical conditions during star formation. Oscillation spectra of red giant…
JCMT POL-2 and BISTRO Survey observations of magnetic fields in the L1689 molecular cloud
Kate Pattle, Shih-Ping Lai, James Di Francesco +26
We present 850m polarization observations of the L1689 molecular cloud, part of the nearby Ophiuchus molecular cloud complex, taken with the POL-2 polarimeter on the James Clerk…
Science Extraction from TESS Observations of Known Exoplanet Hosts
Stephen R. Kane, Jacob L. Bean, Tiago L. Campante +15
The transit method of exoplanet discovery and characterization has enabled numerous breakthroughs in exoplanetary science. These include measurements of planetary radii, mass-radiu…
On the nature of VX Sagitarii: Is it a TZO, a RSG or a high-mass AGB star?
H. M. Tabernero, R. Dorda, I. Negueruela +1
Aims. We present a spectroscopic analysis of the extremely luminous red star VX Sgr based on high-resolution observations combined with AAVSO light curve data. Given the puzzling c…
Searching for proto-planets with MUSE
C. Xie, S. Y. Haffert, J. de Boer +5
Protoplanetary disks contain structures such as gaps, rings, and spirals, which are thought to be produced by the interaction between the disk and embedded protoplanets. However, o…