搜索结果: 1-15 共查到“天文学 Linear”相关记录17条 . 查询时间(0.059 秒)
Large-scale structure of the molecular gas in Taurus revealed by high linear dynamic range spectral line mapping
molecules structure
2014/12/23
We report the results of a 100 deg2 survey of the Taurus molecular cloud region in 12CO and 13CO J = 1→ 0. The image of the cloud in each velocity channel includes 3 × 106 Nyquist-sampled pixels on a ...
LINEAR POLARIZATION AND TOTAL FLUX DENSITY OF SILICON MONOXIDE MASERS AND ACTIVE EXTRAGALACTIC OBJECTS AT MILLIMETER WAVELENGTHS
Millimeter-wave wireless resources Linear polarization Radio astronomy observatory telescope Maser The Milky Way
2014/12/10
In order to investigate the linear polarization properties of millimeter-wave radio sources, a polarimeter was constructed for use on the Five College Radio Astronomy Observatory 14m telescope. Linear...
The linear expansion hyperspherical universe
large scale structure of universe bolometric flux luminosity distance quasars galaxies redshift space redshift periodicity
2011/9/25
From Karlsson’s formula and the polar effect, we realize that the half periodic parameter of redshift is 0.206, in theory, we finally explain why the great wall is at redshift Z=0.079 in redshift spac...
Existence of Equilibrium Points and their Linear Stability in the Generalized Photogravitational Chermnykh-Like Problem with Power-law Profile
Existence of Equilibrium Points and their Linear Stability in the Generalized Photogravitational Chermnykh-Like Problem with Power-law Profile
2011/10/14
We consider the modified restricted three body problem with power-law density profile of disk, which rotates around the center of mass of the system with perturbed mean motion. Using analytical and nu...
Redshift and distances in a ΛCDM cosmology with non-linear inhomogeneities
cosmology: theory, relativity, large-scale structure of Universe, super- novae: general
2011/10/13
In this paper we study the effects of inhomogeneities on light propagation in a flat {\Lambda}CDM background. To this end we use exact solutions of Einstein's equations (Meures & Bruni 2011) where, st...
The Non-Linear Matter Power Spectrum in Warm Dark Matter Cosmologies
Cosmology: theory – large-scale structure of the Universe – dark matter,methods: numerical – gravitational lensing: weak
2011/10/12
We investigate the non-linear evolution of the matter power spectrum by using a large set of high-resolution N-body/hydrodynamic simulations. The linear matter power in the initial conditions is consi...
Near-infrared Linear Polarization of Ultracool Dwarfs
Near-infrared Linear Polarization tracool Dwarfs
2011/10/8
We report on near-infrared J- and H-band linear polarimetric photometry of eight ultracool dwarfs (two late-M, five L0-L7.5, and one T2.5) with known evidence for photometric variability due to dust c...
Non-linear corrections to inflationary power spectrum
Non-linear corrections inflationary power spectrum
2010/11/15
We study non-linear contributions to the power spectrum of the curvature perturbation on super-horizon scales, produced during slow-roll inflation driven by a canonical single scalar field. We find th...
On the linear coupling between fast and slow MHD waves due to line-tying effects
Magnetohydrodynamics Waves Magnetic fields Sun atmosphere—Sun oscillations
2010/11/10
Context. Oscillations in coronal loops are usually interpreted in terms of uncoupled magnetohydrodynamic (MHD) waves. Examples of these waves are standing transverse motions, interpreted as the kink M...
General relativistic effects on non-linear power spectra
Cosmology and Extragalactic Astrophysics (astro-ph.CO)
2011/1/6
Non-linear nature of Einstein equation introduces genuine relativistic higher order corrections to the usual Newtonian fluid equations describing the evolution of cosmological perturbations.
Stokes tomography of radio pulsar magnetospheres. I. Linear polarization
Solar and Stellar Astrophysics (astro-ph.SR)
2011/1/4
Polarimetric studies of pulsar radio emission traditionally concentrate on how the Stokes vector (I, Q, U, V) varies with pulse longitude, with special emphasis on the position angle (PA) swing of the...
Using Absorptive Linear Polarization Spectroscopy to Understand Imbedded Stars
Solar and Stellar Astrophysics (astro-ph.SR)
2010/12/24
Sensitive measurements of the linearly polarized spectra of stars can be used to deduce geometric properties of their otherwise unresolved circumstellar environments. This paper describes some of the ...
Spatial Damping of Linear Compressional Magnetoacoustic Waves in Quiescent Prominences
Sun: prominences oscillations magnetohydrodynamics radiation thermal
2010/9/17
We study the spatial damping of magnetoacoustic waves in an unbounded quiescent prominence invoking the technique of MHD seismology. We consider Newtonian radiation in the energy equation and derive a...
Application of non-linear analysis to variability of 3C390.3。
Non-linear resonances in accretion disks and qpos
Non-linear resonances accretion disks qpos
2009/6/17
Non-linear resonances in accretion disks and qpos。