18.1k citations
- University of LisbonPT1.3k papers
- Universidade Técnica de LisboaPT388 papers
- Centre National de la Recherche ScientifiqueFR326 papers
- Instituto de Plasmas e Fusão NuclearPT209 papers
- European Organization for Nuclear ResearchCH202 papers
- Centro de Física Teórica de Partículas201 papers
- Instituto Politécnico de LisboaPT190 papers
- Instituto de TelecomunicaçõesPT175 papers
- Universitat de ValènciaES175 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR143 papers
- Centro de Astrofísica e GravitaçãoPT133 papers
- LIP - Laboratory of Instrumentation and Experimental Particle PhysicsPT133 papers
15 papers · 2 filters
Kinetics of Particles in Relativistic Collisionless Shocks
Mikhail V. Medvedev, Luis O. Silva, Ricardo A. Fonseca +2
Charged plasma particles form an anisotropic counter-streaming distribution at the front of a shock. In the near- and ultra-relativistic regimes, Weibel (or two-stream) instability…
Cosmological acceleration, varying couplings, and Lorentz breaking
Orfeu Bertolami, Ralf Lehnert, Robertus Potting +1
Many candidate fundamental theories contain scalar fields that can acquire spacetime-varying expectation values in a cosmological context. Such scalars typically obey Lorentz-viola…
Rapidly rotating superfluid neutron stars in Newtonian dynamics
Shijun Yoshida, Yoshiharu Eriguchi
We develop a formulation for constructing and examining rapidly rotating Newtonian neutron star models that contain two superfluids, taking account of the effect of the rotation ve…
New Constraints on , , and w from an Independent Set of Eleven High-Redshift Supernovae Observed with HST
R. A. Knop, G. Aldering, R. Amanullah +45
We report measurements of , , and w from eleven supernovae at z=0.36-0.86 with high-quality lightcurves measured using WFPC-2 on the HST. This is an independent set of hi…
Electrically charged compact stars and formation of charged black holes
Subharthi Ray, Aquino L. Espindola, Manuel Malheiro +2
We study the effect of electric charge in compact stars assuming that the charge distribution is proportional to the mass density. The pressure and the density of the matter inside…
Interpenetrating plasma shells: near-equipartition magnetic field generation and non-thermal particle acceleration
L. O. Silva, R. A. Fonseca, J. Tonge +3
We present the first three-dimensional fully kinetic electromagnetic relativistic particle-in-cell simulations of the collision of two interpenetrating plasma shells. The highly ac…