搜索结果: 1-11 共查到“高能天体物理学 Constraints”相关记录11条 . 查询时间(0.284 秒)
Joint spectral-timing modelling of the hard lags in GX 339-4: constraints on reflection models
Joint spectral-timing modelling the hard lags GX 339-4 constraints reflection models
2012/2/23
The X-ray variations of hard state black hole X-ray binaries above 2 keV show 'hard lags', in that the variations at harder energies follow variations at softer energies, with a time-lag \tau dependin...
Constraints on the Synchrotron Shock Model for the Fermi GBM Gamma-Ray Burst 090820A
Constraints Synchrotron Shock Model Fermi GBM Gamma-Ray Burst 090820A
2011/10/18
Discerning the radiative dissipation mechanism for prompt emission in Gamma-Ray Bursts (GRBs) requires detailed spectroscopic modeling that straddles the $\nu F_{\nu}$ peak in the 100 keV - 1 MeV rang...
Gyromagnetic Factors and Atomic Clock Constraints on the Variation of Fundamental Constants
Gyromagnetic Factors Atomic Clock Constraints Variation Fundamental Constants
2011/10/14
We consider the effect of the coupled variations of fundamental constants on the nucleon magnetic moment. The nucleon g-factor enters into the interpretation of the measurements of variations in the f...
Constraints on the origin of ultra-high-energy cosmic rays from cosmogenic neutrinos and photons
Astroparticle physics Acceleration of particles Abundances Neutrinos Gamma-rays Relativistic processes
2011/10/11
We study the production of cosmogenic neutrinos and photons during the extragalactic propagation of ultra-high-energy cosmic rays (UHECRs). For a wide range of models in cosmological evolution of sour...
Curvature perturbation spectra from waterfall transition, black hole constraints and non-Gaussianity
waterfall transition black hole constraints non-Gaussianity
2011/10/11
We carried out numerical calculations of a contribution of the waterfall field to the primordial curvature perturbation (on uniform density hypersurfaces) $\zeta$, which is produced during waterfall t...
Constraints on Enhanced Dark Matter Annihilation from IceCube Results
Dark matter Neutrinos Neutrino Telscopes
2011/10/18
Excesses on electromagnetic fluxes measured by ATIC, and the PAMELA and Fermi-LAT telescopes can be explained by dark matter annihilation in our Galaxy. However, this requires large boosts on the dark...
The curvaton scenario in Brane cosmology: model parameters and their constraints
Cosmology Intermediate Inflation Brane Curvaton
2010/11/16
We have studied the curvaton scenario in brane world cosmology in an intermediate inflationary
scenario. This approach has allowed us to find some constraints on different parameters that appear in t...
Abundance Patterns in S-type AGB stars : Setting Constraints on Nucleosynthesis and Stellar Evolution Models
Abundance Patterns Setting Constraints Stellar Evolution Models
2010/11/12
During the evolution on the AGB, S-type stars are the first objects to experience s-process nucleosynthesis and third dredge-ups, and therefore to exhibit sprocess signatures in their atmospheres.
Constraints on the Polarization of the Anomalous Microwave Emission in the Perseus Molecular Complex from 7-year WMAP data
diffuse radiation radiation mechanisms general – radio continuum ISM
2010/11/11
We have used the seven year Wilkinson Microwave Anisotropy Probe (WMAP) data in order to update
the measurements of the intensity signal in the G159.6-18.5 region within the Perseus Molecular
Comple...
Observational constraints on Galileon cosmology
Cosmology and Extragalactic Astrophysics (astro-ph.CO) General Relativity and Quantum Cosmology (gr-qc) High Energy Physics - Phenomenology (hep-ph) High Energy Physics - Theory (hep-th)
2010/12/23
We study the cosmology of a covariant Galileon field with five covariant Lagrangians and confront this theory with the most recent cosmological probes: the type Ia supernovae data (Constitution and Un...
Constraints of a pulsation frequency on stellar parameters in the eclipsing spectroscopic binary system: V577 Oph
binaries: eclipsing — binaries spectroscopic — stars fundamental parameters — stars
2010/11/15
We present a preliminary spectroscopic analysis of the binary system V577Oph, observed during the summer of 2007 on the 2.6m NOT telescope on La Palma. We have obtained time series spectroscopic obser...