搜索结果: 1-13 共查到“天文学 Revisited”相关记录13条 . 查询时间(0.171 秒)
We investigate density perturbations sourced by a curvaton with a generic energy potential. The key feature of a curvaton potential which deviates from quadratic is that the curvaton experiences a non...
Catastrophic quenching in alpha-Omega dynamos revisited
Catastrophic quenching alpha-Omega revisited
2011/9/27
At large magnetic Reynolds numbers, magnetic helicity evolution plays an important role in astrophysical large-scale dynamos. The recognition of this fact led to the development of the dynamical alpha...
Cold uniform spherical collapse revisited
N-body simulations virialization spherical collapse
2010/11/10
We report results of a study of the Newtonian dynamics of N self-gravitating particles which start in a quasiuniform spherical configuration, without initial velocities.
Recently, Sun et al. (2008) published new Galactic 3D-models of magnetic fields in the disk and halo of the Milky Way and the distribution of cosmic-ray electron density by taking into account the the...
Analytic Solutions of Ultra-High Energy Cosmic Ray Nuclei Revisited
High Energy Astrophysical Phenomena (astro-ph.HE) High Energy Physics - Phenomenology (hep-ph)
2011/1/5
The chemical composition of ultra-high energy cosmic rays is a key question in particle astrophysics. The measured composition, inferred from the elongation rates of cosmic ray showers, looks in gener...
Positron annihilation spectrum from the Galactic Centre region observed by SPI/INTEGRAL, revisited: annihilation in a cooling ISM?
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/24
We analyse SPI/INTEGRAL data on the 511 keV line from the Galactic Centre, accumulated over ~6 years of observations.
Fourth-order gravity as the inflationary model revisited
Fourth-order gravity inflationary model
2010/3/19
We revisit the simplest (fourth-order or quadratically generated) modified gravity model in four space-time dimensions. It is equivalent to the certain quintessence model via a Legendre-Weyl transform...
PR AND PL (PMV) RELATIONS FOR CLASSICAL CEPHEIDS REVISITED
Cepheids Stars: distances Stars: statistics
2010/10/29
Using observational data available for a large number of Galactic Cepheids, we determine the relation between the radius and the period of pulsations, by means of a variant of the Baade{Wesselink meth...
Surface layer seeing at san Pedro Mártir revisited。
The Spin History of Protostars：Disk Locking, Revisited。
Relying on the Greek text related to Babylonian-Hellenic observations
of lunar eclipses in Ptolemy’s ”Almagest” (Halma M., 1813) and by analysing
some Arabian notes about solar and lunar eclipses – ...
MINIHALO MODEL FOR THE LOW-REDSHIFT Lyα ABSORBERS REVISITED
quasars absorption lines-Galaxies halos-dark matter
2009/2/9
We reconsider the basic properties of the classical minihalo model
of Rees and Milgrom in light of the new work, both observational (on "dark galax-
ies" and masses of baryonic haloes) and theoretic...
THE ANALYSIS OF THE POSSIBLE THERMAL EMISSION AT RADIO FREQUENCIES FROM AN EVOLVED SUPERNOVA REMNANT HB 3 (G132.7+1.3)：REVISITED
Radiation mechanisms thermal-Radio continuum general-ISM supernova remnants-ISM individual objects HB3
2009/1/19
It has recently been reported that some of the °ux density values
for an evolved supernova remnant (SNR) HB 3 (G132.7+1.3) are not accurate
enough. In this work we therefore revised the analysis of ...