Astrophysics and Space Science
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Equilibrium Structures of Differentially Rotating and Tidally Distorted White Dwarf Models of Stars
Astrophysics and Space Science - Tập 301 - Trang 51-60 - 2006
In this paper we present a method for computing the equilibrium structures and various physical parameters of a primary component of the binary system assuming that the primary is more massive than the secondary and is rotating differentially according to the law of the w2 = b0 + b1 × s2 + b2 × s4, w being the angular velocity of rotation of a fluid element distant s from the axis of rotation and ...... hiện toàn bộ
Oscillations in solar jets observed with the SOT of Hinode: viscous effects during reconnection
Astrophysics and Space Science - Tập 352 - Trang 7-15 - 2014
Transverse oscillatory motions and recurrence behavior in the chromospheric jets observed by Hinode/SOT are studied. A comparison is considered with the behavior that was noticed in coronal X-ray jets observed by Hinode/XRT. A jet like bundle observed at the limb in Ca II H line appears to show a magnetic topology that is similar to X-ray jets (i.e., the Eiffel tower shape). The appearance of such...... hiện toàn bộ
On the evolution of families of periodic orbits approaching a small primary
Astrophysics and Space Science - Tập 33 - Trang L29-L32 - 1975
A network of families of periodic orbits is obtained approximately for the case μ=0.1 of the restricted problem using a direct grid search. Only such orbits of the third body are considered that cross the synodical line of the primaries ‘outside’ the smaller of the two, perpendicularly, and in the direction of rotation of the system.
Mô phỏng Monte-Carlo của các hệ thống thiên hà Dịch bởi AI
Astrophysics and Space Science - Tập 86 - Trang 437-452 - 1982
Các mô hình máy tính về các trường thiên hà được tạo ra bằng cách sử dụng kỹ thuật mô phỏng Monte-Carlo được mô tả trong Bài báo I (MacGillivray et al., 1982b). Trong các mô hình, nhiều kịch bản về phân bố 3 chiều thật sự của các thiên hà (ví dụ: sự cụm lại trên các thang đo liên tục hoặc phân cấp) được bao gồm và các thiên hà được chiếu lên một tấm phim tổng hợp. Tất cả các yếu tố ảnh hưởng đến á...... hiện toàn bộ
#mô phỏng Monte-Carlo; thiên hà; phân bố 3 chiều; cụm lại; bậc hai; kính thiên văn Schmidt.
Numerical study of a random dynamical system with two degrees of freedom
Astrophysics and Space Science - Tập 37 - Trang 87-100 - 1975
The classical situation of dynamical systems with two degrees of freedom is completely modified by the introduction of a stochastic element which provides a slow dissolution of the zone of stability. Using a Fokker-Planck method it has been shown that the Gambler's ruin problem is a rather good approximation of the diffusion process. Furthermore the orbits exhibit aC-system character even during t...... hiện toàn bộ
Exploring Levi-Civita’s cylindrical solutions in $f(\mathcal{G},T)$ gravity
Astrophysics and Space Science - Tập 364 - Trang 1-11 - 2019
An exact solution pertaining to the existence of cosmic strings has been discussed for a cylindrically symmetric
$f(\mathcal{G},T)$
gravity model, with
...... hiện toàn bộ
Similarity solution of the propagation of spherical shock waves in a magnetogasdynamic self-gravitating system
Astrophysics and Space Science - Tập 146 Số 1 - Trang 175-182 - 1988
Dust and atomic hydrogen nearρ Ophiuchi
Astrophysics and Space Science - Tập 2 - Trang 510-519 - 1968
We discuss the distribution of dust and atomic hydrogen in and around a small dark cloud nearρ Ophiuchi. Although the obscuration reaches values as high as 8 magnitudes, the values ofN
H derived inside the cloud do not differ markedly from those found at nearby, less obscured points. At low values of the obscuration, dust and hydrogen isophotes show satisfactory agreement, i.e.,N
H increases withN...... hiện toàn bộ
INTEGRAL observations of TeV plerions
Astrophysics and Space Science - Tập 309 - Trang 215-219 - 2007
Amongst the sources seen in very high gamma-rays several are associated with Pulsar Wind Nebulae (“TeV plerions”). The study of hard X-ray/soft gamma-ray emission is providing an important insight into the energetic particle population present in these objects. The unpulsed emission from pulsar/pulsar wind nebula systems in the energy range accessible to the INTEGRAL satellite is mainly synchrotr...... hiện toàn bộ
Discussion session on star formation, molecular clouds and the interstellar medium
Astrophysics and Space Science - Tập 217 - Trang 227-230 - 1994
In this panel discussion contributions were made by K. Strom, L. Nordh and H. Zinnecker on the contributions of surveys to the study of star formation regions, by B. Burton on a survey of galactic H I and by E. Dwek on the detection of galactic supernovae by infrared surveys. The contributions of K. Strom, L. Nordh and E. Dwek are summarized here.
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