5k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR339 papers
- European Southern ObservatoryCL298 papers
- Center for Astrophysics Harvard & SmithsonianUS294 papers
- University of CambridgeGB274 papers
- Osservatorio Astronomico di PadovaIT271 papers
- University of WarwickGB256 papers
- Stockholm UniversitySE237 papers
- Max Planck Institute for AstrophysicsDE213 papers
- Las Cumbres Observatory Global Telescope NetworkUS211 papers
- AlbaNovaSE210 papers
- Space Telescope Science InstituteUS208 papers
- University of St AndrewsGB193 papers
165 papers · 1 filter
Optimal 5-step nilpotent quadratic algebras
Natalia Iyudu, Stanislav Shkarin
By the Golod--Shafarevich Theorem, an associative algebra R given by n generators and d<n^2/3 homogeneous quadratic relations is not 5-step nilpotent. We prove that this estimate i…
Performance of Major Flare Watches from the Max Millennium Program (2001-2010)
D. Shaun Bloomfield, Peter T. Gallagher, William H. Marquette +2
The physical processes that trigger solar flares are not well understood and significant debate remains around processes governing particle acceleration, energy partition, and part…
Single Transit Candidates from K2: Detection and Period Estimation
H. P. Osborn, D. J. Armstrong, D. J. A. Brown +9
Photometric surveys such as Kepler have the precision to identify exoplanet and eclipsing binary candidates from only a single transit. K2, with its 75d campaign duration, is ideal…
Pressure anisotropy generation in a magnetized plasma configuration with a shear flow velocity
S. De Camillis, S. S. Cerri, F. Califano +1
The nonlinear evolution of the Kelvin Helmholtz instability in a magnetized plasma with a perpendicular flow close to, or in, the supermagnetosonic regime can produce a significant…
Cavity Mode Frequencies and Strong Optomechanical Coupling in Two-Membrane Cavity Optomechanics
J. Li, A. Xuereb, N. Malossi +1
We study the cavity mode frequencies of a Fabry-Pérot cavity containing two vibrating dielectric membranes. We derive the equations for the mode resonances and provide approximate…
Searching for swept-up Hydrogen and Helium in the late-time spectra of 11 nearby Type Ia supernovae
Kate Maguire, Stefan Taubenberger, Mark Sullivan +1
The direct detection of a stellar system that explodes as a Type Ia supernova (SN Ia) has not yet been successful. Various indirect methods have been used to investigate SN Ia prog…
ALMA Observations of a Gap and a Ring in the Protoplanetary Disk around TW Hya
Hideko Nomura, Takashi Tsukagoshi, Ryohei Kawabe +8
We report the first detection of a gap and a ring in 336 GHz dust continuum emission from the protoplanetary disk around TW Hya, using the Atacama Large Millimeter/Submillimeter Ar…
Nonequilibrium processes from Generalised Langevin Equations: realistic nanoscale systems connected to two thermal baths
H. Ness, A. Genina, L. Stella +2
We extend the Generalised Langevin Equation (GLE) method [Phys. Rev. B 89, 134303 (2014)] to model a central classical region connected to two realistic thermal baths at two differ…
Radio observations of a sample of broad-lined type Ic supernovae discovered by PTF/iPTF: A search for relativistic explosions
A. Corsi, A. Gal-Yam, S. R. Kulkarni +15
Long duration gamma-ray bursts are a rare subclass of stripped-envelope core-collapse supernovae that launch collimated relativistic outflows (jets). All gamma-ray-burst-associated…
Non-Markovian quantum processes: complete framework and efficient characterisation
Felix A. Pollock, César Rodríguez-Rosario, Thomas Frauenheim +2
Currently, there is no systematic way to describe a quantum process with memory solely in terms of experimentally accessible quantities. However, recent technological advances mean…
The global impact distribution of Near-Earth objects
Clemens Rumpf, Hugh G. Lewis, Peter M. Atkinson
Asteroids that could collide with the Earth are listed on the publicly available Near-Earth object (NEO) hazard web sites maintained by the US and European space agencies (NASA and…
The Kepler-454 System: A Small, Not-rocky Inner Planet, a Jovian World, and a Distant Companion
Sara Gettel, David Charbonneau, Courtney D. Dressing +47
Kepler-454 (KOI-273) is a relatively bright (V = 11.69 mag), Sun-like starthat hosts a transiting planet candidate in a 10.6 d orbit. From spectroscopy, we estimate the stellar tem…
The solid-liquid interfacial free energy out of equilibrium
Bingqing Cheng, Gareth A. Tribello, Michele Ceriotti
The properties of the interface between solid and melt are key to solidification and melting, as the interfacial free energy introduces a kinetic barrier to phase transitions. This…
WASP-135b: a highly irradiated, inflated hot Jupiter orbiting a G5V star
Jessica J. Spake, David J. A. Brown, Amanda P. Doyle +27
We report the discovery of a new transiting planet from the WASP survey. WASP-135b is a hot Jupiter with a radius of 1.30 pm 0.09 Rjup, a mass of 1.90 pm 0.08 Mjup and an orbital p…
2P/Encke, the Taurid complex NEOs and the Maribo and Sutter's Mill meteorites
C. Tubiana, C. Snodgrass, R. Michelsen +4
The Taurid meteoroid stream has long been linked with 2P/Encke owing to a good match of their orbital elements, even though the comet's activity is not strong enough to explain the…
The Host Stars of Keplers Habitable Exoplanets: Superflares, Rotation and Activity
D. J. Armstrong, C. E. Pugh, A. -M. Broomhall +4
We embark on a detailed study of the lightcurves of Keplers most Earth-like exoplanet host stars using the full length of Kepler data. We derive rotation periods, photometric activ…
Valence and L-shell photoionization of Cl-like Argon using R-matrix techniques
Niall Tyndall, Catherine Ramsbottom, Connor Ballance +1
Photoionization cross sections are obtained using the relativistic Dirac Atomic R-matrix Codes (DARC) for all valence and L-shell energy ranges between 27-270eV. A total of 557 lev…
Rational SO(2)-Equivariant Spectra
D. Barnes, J. P. C. Greenlees, M. Kedziorek +1
We prove that the category of rational SO(2)-equivariant spectra has a simple algebraic model. Furthermore, all of our model categories and Quillen equivalences are monoidal, so we…
Large and small-scale structure of the Intermediate and High Velocity Clouds towards the LMC and SMC
J. V. Smoker, A. J. Fox, F. P. Keenan
We employ CaII K and NaI D interstellar absorption-line spectroscopy of early-type stars in the Large and Small Magellanic Clouds to investigate the large- and small-scale structur…
The large- and small-scale CaII K structure of the Milky Way from observations of Galactic and Magellanic sightlines
J. V. Smoker, F. P. Keenan, A. J. Fox
Aims: By utilising spectra of early-type stellar probes of known distances in the same region of the sky, the large and small-scale (pc) structure of the Galactic ISM can be invest…
Supernova 2013fc in a circumnuclear ring of a luminous infrared galaxy: the big brother of SN 1998S
T. Kangas, S. Mattila, E. Kankare +30
We present photometric and spectroscopic observations of SN 2013fc, a bright type II supernova (SN) in a circumnuclear star-forming ring in the luminous infrared galaxy ESO 154-G01…
Progenitor-dependent Explosion Dynamics in Self-consistent, Axisymmetric Simulations of Neutrino-driven Core-collapse Supernovae
Alexander Summa, Florian Hanke, Hans-Thomas Janka +3
We present self-consistent, axisymmetric core-collapse supernova simulations performed with the Prometheus-Vertex code for 18 pre-supernova models in the range of 11-28 solar masse…
Positive extensions of Schur multipliers
Rupert H. Levene, Ying-Fen Lin, Ivan G. Todorov
We introduce partially defined Schur multipliers and obtain necessary and sufficient conditions for the existence of extensions to fully defined positive Schur multipliers, in term…
Rational Orthogonal Calculus
David Barnes
We show that one can use model categories to construct rational orthogonal calculus. That is, given a continuous functor from vector spaces to based spaces one can construct a towe…