搜索结果: 1-15 共查到“天体物理学 effect”相关记录41条 . 查询时间(0.343 秒)
Effect of a Weak Electromagnetic Field on Particle Acceleration by a Rotating Black Hole
Weak Electromagnetic Field Particle Acceleration Rotating Black Hole
2012/2/23
We study high energy charged particle collisions near the horizon in an electromagnetic field around a rotating black hole and reveal the condition of the fine-tuning to obtain arbitrarily large cente...
Discovery of the correspondence between intra-cluster radio emission and a high pressure region detected through the Sunyaev-Zel'dovich effect
galaxies: clusters: individual: RX J1347-1145 – radio continuum: galaxies – X-rays: galaxies: clusters – cosmic back- ground radiation
2011/10/18
We analyzed new 237 MHz and 614 MHz GMRT data of the most X-ray luminous galaxy cluster, RX J1347-1145. Our radio results are compared with the MUSTANG 90 GHz Sunyaev-Zel'dovich effect map and with re...
Observation of the Cosmic Ray Moon shadowing effect with ARGO-YBJ
Observation Cosmic Ray Moon shadowing effect ARGO-YBJ
2011/10/19
Cosmic rays are hampered by the Moon and a deficit in its direction is expected (the so-called \emph{Moon shadow}). The Moon shadow is an important tool to determine the performance of an air shower a...
Future deceleration due to effect of event horizon on cosmic backreaction
Future deceleration cosmic backreaction
2011/1/10
The present acceleration of the universe leads to the formation of a cosmological future event horizon. We explore the effects of the event horizon on cosmological backreaction due to inhomogeneities ...
MUSTANG High Angular Resolution Sunyaev-Zel'dovich Effect Imaging of Sub-Structure in Four Galaxy Clusters
MUSTANG High Angular Resolution Sunyaev-Zel'dovich Effect Imaging
2011/1/11
We present 10" to 18" images of four massive clusters of galaxies through the Sunyaev-Zel'dovich Effect (SZE). These measurements, made at 90~GHz with the MUSTANG receiver on the Green Bank Telescope ...
Light WIMP Searches: The Effect of the Uncertainty in Recoil Energy Scale and Quenching Factor
Light WIMP Searches Recoil Energy Scale
2011/1/11
Taking liquid xenon detectors as a case study, the importance of a robust recoil energy calibration as a prerequisite to a search for light-mass Weakly Interacting Massive Particles (WIMPs) is emphasi...
The Effect of Environment on Shear in Strong Gravitational Lenses
gravitational lensing strong
2010/11/15
Using new photometric and spectroscopic data in the fields of nine strong gravitational lenses that lie in galaxy groups, we analyze the effects of both the local group environment and line-of-sight g...
Tkachenko modes in rotating neutron stars: the effect of compressibility and implications for pulsar timing noise
Tkachenko modes rotating neutron stars compressibility pulsar timing noise
2010/11/11
Long wavelength oscillations (Tkachenko waves) of the triangular lattice of quantized vortices in super uid neutron stars have been suggested as one of the possible explanations for the timing noise o...
Dark Matter as a Relativistic Inertial Effect in Einstein Canonical Gravity?
Dark Matter Relativistic Inertial Effect Einstein Canonical Gravity
2010/11/16
After the study of non-inertial frames in special relativity with emphasis on the problem of clock synchronization (i.e. of how to define 3-space), an overview is given of Einstein canonical gravity i...
Observational constraints on Chaplygin cosmology in a braneworld scenario with induced gravity and curvature effect
Cosmology Dark energy -Cosmology theory- Cosmology Observations
2010/11/16
We study cosmological dynamics and late-time evolution of an extended induced grav-ity braneworld scenario. In this scenario, curvature effects are taken into account via the
Gauss-Bonnet term in the...
MHD Simulations of Parker Instability Undergoing Cosmic-Ray Diffusion: Effect of the Initial Equilibrium Conditions on Mixing
cosmic rays magnetohydrodynamics instability numerical simulation
2010/11/9
Parker instability arises from the presence of magnetic fields in a plasma such as the interstellar medium (ISM),wherein the magnetic buoyant pressure expels the gas and causes the gas to move along t...
The effect of coronal radiation on a residual inner disk in the low/hard spectral state of black hole X-ray binary systems
accretion accretion disks — black hole physics —X-rays bi-naries — X-rays stars
2010/11/15
Thermal conduction between a cool accretion disk and a hot inner corona can result in either evaporation of the disk or condensation of the hot corona. At low mass accretion rates, evaporation dominat...
The effect of the infrared excess from the Be star on inverse Compton gamma-ray production in PSR B1259-63/SS 2883
radiation mechanisms non-thermal – pulsars individual PSR B1259-63–X-rays binaries
2010/11/12
The binary system PSR B1259-63 consists of a 48 ms pulsar in a 3.4 year or-bit around a Be star and unpulsed TeV gamma-ray emission has been detected near previous periastron passages.
Evolution and Distribution of Magnetic Fields from AGNs in Galaxy Clusters. I. The Effect of Injection Energy and Redshift
galaxies active — galaxies clusters general — methods numerical — MHD — turbulence
2010/11/9
We present a series of cosmological magnetohydrodynamic (MHD) simulations that simultaneously follow the formation of a galaxy cluster and evolution of magnetic fields ejected by an Active Galactic Nu...
Alpha effect due to buoyancy instability of a magnetic layer
magnetohydrodynamics Sun: magnetic fields Instabilities Turbulence Sun dynamo
2010/11/11
Context. A strong toroidal field can exist in form of a magnetic layer in the overshoot region below the solar convection zone. This motivates a more detailed study of the magnetic buoyancy instabilit...