The Effect of Hydrostatic Weighting on the Vertical Temperature Structure of the Solar Corona [0.03%]
流体静力加权对日冕垂直温度结构的影响
MJ Aschwanden,N Nitta
MJ Aschwanden
We investigate the effect of hydrostatic scale heights lambda(T) in coronal loops on the determination of the vertical temperature structure T&parl0;h&parr0; of the solar corona. Every method that determines an average temperature at a part...
PM Woods,C Kouveliotou,MH Finger et al.
PM Woods et al.
We have phase-connected a sequence of Rossi X-Ray Timing Explorer Proportional Counter Array observations of SGR 1806-20 covering 178 days. We find that a simple secular spin-down model does not adequately fit the data. The period derivativ...
B Zhang,AK Harding
B Zhang
We propose a unified picture of high magnetic field radio pulsars and magnetars by arguing that they are all rotating high-field neutron stars but that their magnetic axes have different orientations with respect to their rotation axes. In ...
Disk Accretion in the 10 Myr Old T Tauri Stars TW Hydrae and Hen 3-600A [0.03%]
年龄为10Myr的TTauri星TWHydrae和Hen3-600A的盘吸积
J Muzerolle,N Calvet,C Briceño et al.
J Muzerolle et al.
We have found that two members of the TW Hydrae association, TW Hydrae and Hen 3-600A, are still actively accreting, based on the ballistic infall signature of their broad Halpha emission profiles. We present the first quantitative analysis...
A Hui-Bon-Hoa,F LeBlanc,PH Hauschildt
A Hui-Bon-Hoa
We investigate the effects of diffusion in the atmospheres of hot horizontal-branch stars using a model atmosphere code including diffusion self-consistently. Equilibrium stratifications (i.e., for which the diffusion velocity equals zero i...
Smoothed Particle Hydrodynamics Simulations of Apsidal and Nodal Superhumps [0.03%]
apsidal和nodal超强潮的光滑粒子动力学模拟
MA Wood,MM Montgomery,JC Simpson
MA Wood
In recent years, a handful of systems have been observed to show "negative" (nodal) superhumps, with periods slightly shorter than the orbital period. It has been suggested that these modes are a consequence of the slow retrograde precessio...
R Sari,P Mészáros
R Sari
The standard model of gamma-ray burst afterglows is based on synchrotron radiation from a blast wave produced when the relativistic ejecta encounters the surrounding medium. We reanalyze the refreshed shock scenario, in which slower materia...
B Wu,E Fenimore
B Wu
The analysis of spectral lag between energy bands, which combines temporal and spectral analyses, can add strict constraints to gamma-ray burst (GRB) models. In previous studies, the lag analysis focused on the lags between channel 1 (25-57...
F Paerels,E Kuulkers,J Heise et al.
F Paerels et al.
Recently, detection of discrete features in the X-ray afterglow spectra of GRB 970508 and GRB 970828 was reported. The most natural interpretation of these features is that they are redshifted Fe K emission complexes. The identification of ...
B Moore,S Gelato,A Jenkins et al.
B Moore et al.
We compare the structure and substructure of dark matter halos in model universes dominated by collisional, strongly self-interacting dark matter (SIDM) and collisionless, weakly interacting dark matter (CDM). While SIDM virialized halos ar...