2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- A. Zezas3 profiles106 · h 46
- P. Reig2 profiles88 · h 30
- I. Papadakis2 profiles84 · h 43
- V. Charmandaris2 profiles76 · h 70
- V. Pavlidou2 profiles58 · h 50
- C. Soukoulis54 · h 111
- K. Tassis2 profiles52 · h 26
- E. Stratakis47 · h 63
- N. Kylafis2 profiles43 · h 34
- C. Galiotis39 · h 57
- D. Blinov3 profiles33 · h 41
- M. Kafesaki33 · h 54
- University of CreteGR1.1k papers
- California Institute of TechnologyUS231 papers
- Centre National de la Recherche ScientifiqueFR216 papers
- Center for Astrophysics Harvard & SmithsonianUS175 papers
- FORTH Institute of Electronic Structure and LaserGR151 papers
- Max Planck Institute for Radio AstronomyDE139 papers
- Observatoire de ParisFR102 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR94 papers
- Goddard Space Flight CenterUS93 papers
- Max Planck Institute for Extraterrestrial PhysicsDE89 papers
- Aalto UniversityFI84 papers
- Leiden UniversityNL82 papers
51 papers · 1 filter
Anomalous temperature-dependent spin-valley polarization in monolayer WS
Aubrey T. Hanbicki, George Kioseoglou, Marc Currie +4
Single layers of transition metal dichalcogenides (TMDs) are direct gap semiconductors with nondegenerate valley indices. An intriguing possibility for these materials is the use o…
An Event Calculus Production Rule System for Reasoning in Dynamic and Uncertain Domains
Theodore Patkos, Dimitris Plexousakis, Abdelghani Chibani +1
Action languages have emerged as an important field of Knowledge Representation for reasoning about change and causality in dynamic domains. This article presents Cerbere, a produc…
Distributed Methods for Computing Approximate Equilibria
Artur Czumaj, Argyrios Deligkas, Michail Fasoulakis +3
We present a new, distributed method to compute approximate Nash equilibria in bimatrix games. In contrast to previous approaches that analyze the two payoff matrices at the same t…
Multiwavelength Study of Quiescent States of Mrk 421 with Unprecedented Hard X-Ray Coverage Provided by NuSTAR in 2013
M. Baloković, D. Paneque, G. Madejski +305
We present coordinated multiwavelength observations of the bright, nearby BL Lac object Mrk 421 taken in 2013 January-March, involving GASP-WEBT, Swift, NuSTAR, Fermi-LAT, MAGIC, V…
Phase space barriers and dividing surfaces in the absence of critical points of the potential energy: Application to roaming in ozone
Frédéric A. L. Mauguière, Peter Collins, Zeb C. Kramer +4
We examine the phase space structures that govern reaction dynamics in the absence of critical points on the potential energy surface. We show that in the vicinity of hyperbolic in…
From amorphous speckle pattern to reconfigurable Bessel beam via wavefront shaping
Diego Di Battista, Daniele Ancora, Marco Leonetti +1
Bessel beams are non-diffracting light structures, which can be produced with simple tabletop optical elements such as axicon lenses or ring spatial filters and coherent laser beam…
Estimating the distribution of rest-frame timescales for blazar jets: a statistical approach
I. Liodakis, D. Blinov, I. Papadakis +1
In any flux-density limited sample of blazars, the distribution of the timescale modulation factor , which quantifies the change in observed timescales compared to the rest…
A jet model for Galactic black-hole X-ray sources: the cutoff energy-phase-lag correlation
P. Reig, N. Kylafis
Galactic black-hole X-ray binaries emit a compact, optically thick, mildy relativistic radio jet when they are in the hard and hard-intermediate states. In a series of papers, we h…
Flux and spectral variability of the blazar PKS 2155-304 with XMM-Newton: Evidence of Particle Acceleration and Synchrotron Cooling
Jai Bhagwana, A. C. Gupta, I. E. Papadakis +1
We have analyzed XMM-Newton observations of the high energy peaked blazar, PKS 2155-304, made on 24 May 2002 in the 0.3 - 10 keV X-ray band. These observations display a mini-flare…
Evolving Twitter: an experimental analysis of graph properties of the social graph
Despoina Antonakaki, Sotiris Ioannidis, Paraskevi Fragopoulou
Twitter is one of the most prominent Online Social Networks. It covers a significant part of the online worldwide population~20% and has impressive growth rates. The social graph o…
Space Telescope and Optical Reverberation Mapping Project. III. Optical Continuum Emission and Broad-Band Time Delays in NGC 5548
M. M. Fausnaugh, K. D. Denney, A. J. Barth +94
We present ground-based optical photometric monitoring data for NGC 5548, part of an extended multi-wavelength reverberation mapping campaign. The light curves have nearly daily ca…
Relative energy for the Korteweg theory and related Hamiltonian flows in gas dynamics
Jan Giesselmann, Corrado Lattanzio, Athanasios E. Tzavaras
For an Euler system, with dynamics generated by a potential energy functional, we propose a functional format for the relative energy and derive a relative energy identity. The lat…
Gradient induced liquid motion on laser structured black Si surfaces
I. Paradisanos, C. Fotakis, S. H. Anastasiadis +1
This letter reports on the femtosecond laser fabrication of gradient-wettability micro/nano- patterns on Si surfaces. The dynamics of directional droplet spreading on the surface t…
L-Drawings of Directed Graphs
Patrizio Angelini, Giordano Da Lozzo, Marco Di Bartolomeo +4
We introduce L-drawings, a novel paradigm for representing directed graphs aiming at combining the readability features of orthogonal drawings with the expressive power of matrix r…
Qubit lattice coherence induced by electromagnetic pulses in superconducting metamaterials
Z. Ivic, N. Lazarides, G. P. Tsironis
Quantum bits (qubits) are at the heart of quantum information processing schemes. Currently, solid-state qubits, and in particular the superconducting ones, seem to satisfy the req…
Broad-band X-ray spectra of anomalous X-ray pulsars and soft -ray repeaters: pulsars in a weak-accretion regime ?
A. Zezas, J. E. Trümper, N. D. Kylafis
We present the results from the analysis of the broad-band X-ray spectra of 5 Anomalous X-ray Pulsars (AXPs) and Soft -ray Repeaters (SGRs). We fit their Suzaku and INTEGRAL spe…
Band bending inversion in BiSe nanostructures
Louis Veyrat, Fabrice Iacovella, Joseph Dufouleur +8
Shubnikov-de-Haas oscillations were studied under high magnetic field in BiSe nanostructures grown by Chemical Vapor Transport, for different bulk carrier densities ranging…
Variability of the soft X-ray excess in IRAS 13224-3809
E. S. Kammoun, I. E. Papadakis, B. M. Sabra
We study the soft excess variability of the narrow line Seyfert 1 galaxy IRAS 13224-3809. We considered all five archival XMM-Newton observations, and we applied the 'flux-flux plo…
Path-space variational inference for non-equilibrium coarse-grained systems
Vagelis Harmandaris, Evangelia Kalligiannaki, Markos A. Katsoulakis +1
In this paper, we discuss information-theoretic tools for obtaining optimized coarse-grained molecular models for both equilibrium and non-equilibrium molecular dynamics. The latte…
Ripple formation on Nickel irradiated with radially polarized femtosecond beams
George D. Tsibidis, Evangelos Skoulas, Emmanuel Stratakis
We report on the morphological effects induced by the inhomogeneous absorption of radially polarized femtosecond laser irradiation of nickel (Ni) in sub-ablation conditions. A theo…
Long-lived discrete breathers in free-standing graphene
Alberto Fraile, Emmanuel N. Koukaras, Konstantinos Papagelis +2
Intrinsic localized modes or discrete breathers are investigated by molecular dynamics simulations in free-standing graphene. Discrete breathers are generated either through therma…
Spontaneous spin bifurcations and ferromagnetic phase transitions in a spinor exciton-polariton condensate
H. Ohadi, A. Dreismann, Y. G. Rubo +6
We observe a spontaneous parity breaking bifurcation to a ferromagnetic state in a spatially trapped exciton-polariton condensate. At a critical bifurcation density under nonresona…
Notes on Galerkin-finite element methods for the Shallow Water equations with characteristic boundary conditions
D. C. Antonopoulos, V. A. Dougalis
We consider the Shallow Water equations in the supercritical and subcritical cases in one space variable,posed in a finite spatial interval with characteristic boundary conditions…
Spectral and temporal properties of the ultra-luminous X-ray pulsar in M82 from 15 years of Chandra observations and analysis of the pulsed emission using NuSTAR
Murray Brightman, Fiona Harrison, Dominic J. Walton +8
The recent discovery by Bachetti et al. (2014) of a pulsar in M82 that can reach luminosities of up to 10^40 ergs s^-1, a factor of ~100 the Eddington luminosity for a 1.4 Msol com…