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A cornerstone of Einstein's special relativity is Lorentz invariance-the postulate that all observers measure exactly the same speed of light in vacuum, independent of photon-energy. While special relativity assumes that there is no fundamental length-scale associated with such invariance, there is a fundamental scale (the Planck scale, l(Planck)(More)
Pulsars are born with subsecond spin periods and slow by electromagnetic braking for several tens of millions of years, when detectable radiation ceases. A second life can occur for neutron stars in binary systems. They can acquire mass and angular momentum from their companions, to be spun up to millisecond periods and begin radiating again. We searched(More)
Gamma-ray bursts (GRBs) are highly energetic explosions signaling the death of massive stars in distant galaxies. The Gamma-ray Burst Monitor and Large Area Telescope onboard the Fermi Observatory together record GRBs over a broad energy range spanning about 7 decades of gammaray energy. In September 2008, Fermi observed the exceptionally luminous GRB(More)
The transport of 2-deoxyglucose (dGlc) by cultured rat Sertoli cells was stimulated by L-triiodothyronine (T3) in a time and dose-dependent manner. The lag-time was of about 6 h, the half-maximal dose (ED50) was 0.47 nM, which correlates with the Kd of the nuclear T3 receptor of rat Sertoli cells (Kd = 1-2 nM), and the stimulation was maintained up to 24 h.(More)
  • K Holland, P Minkowski, M Pepe, U.-J Wiese
  • 2008
We study theories with the exceptional gauge group G(2). The 14 adjoint " gluons " of a G(2) gauge theory transform as {3}, {3} and {8} under the subgroup SU(3), and hence have the color quantum numbers of ordinary quarks, anti-quarks and gluons in QCD. Since G(2) has a trivial center, a " quark " in the {7} representation of G(2) can be screened by "(More)
The NA48 experiment at CERN has performed a new measurement of direct CP violation, based on data taken in 1997 by simultaneously collecting K L and K S decays into π 0 π 0 and π + π −. The result for the CP violating parameter Re (ε ′ /ε) is (18.5 ± 4.5(stat) ± 5.8(syst)) × 10 −4. 1 Introduction CP violation has been observed so far only in the decays of(More)
  • C Granell, L Díaz, M Gould, V Pascual, J Guimet, P Carrara +1 other
  • 2007
Spatial data infrastructures support the most common requirements of spatial information users –discovery, access, and visual overlay of datasets– however specialized users such as hydrological scientists require more advanced services for capturing, analyzing and processing huge volumes of data. To shift from locally-processed complex tasks to on-line,(More)
Energetic young pulsars and expanding blast waves [supernova remnants (SNRs)] are the most visible remains after massive stars, ending their lives, explode in core-collapse supernovae. The Fermi Gamma-Ray Space Telescope has unveiled a radio quiet pulsar located near the center of the compact synchrotron nebula inside the supernova remnant CTA 1. The(More)
Pulsars are rapidly rotating, highly magnetized neutron stars emitting radiation across the electromagnetic spectrum. Although there are more than 1800 known radio pulsars, until recently only seven were observed to pulse in gamma rays, and these were all discovered at other wavelengths. The Fermi Large Area Telescope (LAT) makes it possible to pinpoint(More)
  • G D Barr, C Bruschini, G Bocquet, P Buchholz, D Cundy, N Doble +49 others
  • 1995
The NA48 collaboration is preparing a new experiment at CERN aiming to study CP violation in the K 0 K 0 system with an accuracy of 2 10 4 in the parameter Re(0 =). Decays into two 0 's will be recorded by a quasi-homogeneous liquid krypton calorimeter. A liquid krypton calorimeter has been chosen to combine good energy, position and time resolution with(More)