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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 ...
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。
Low-eccentricity orbits for the case of a spherically symmetric potential
are studied. The Lindblad approximation concerning nearly circular orbits
is treated. It is shown that this approximation is...