نتایج جستجو برای: z track
تعداد نتایج: 212525 فیلتر نتایج به سال:
Our previous work on adaptation of the Cellular Automaton (CA) track finder [1] to the realistic STS geometry with overlapping sensors allowed to recover the high tracks-finding efficiency [2] which it has had for the simplified STS description with sensors of each station arranged at the same Z position (the “same-Z” geometry). Below we report on a detailed study of the behaviour of the track ...
We present the results of a combined investigation of the spectral and kHz QPO evolution around the Z-track in GX5-1 based on high-quality Rossi-XTE data. In spectral analysis, we find that the Extended ADC emission model provides very good fits to all of the spectra, and the results point clearly to a model for the nature of the Z-track in this source, in agreement with previous results for th...
We report on the first ten weeks of Rossi X-ray Timing Explorer observations of the X-ray transient XTE J1701–462. Large count rate variations were accompanied by changes in the source’s spectral and variability properties. Based on comparisons with other sources we conclude that XTE J1701–462 had all the characteristics of the neutron star Z sources, i.e., the class of the brightest persistent...
Aut(C) = {analytic bijections f : C −→ C}. Any automorphism of the plane must be conformal, for if f ′(z) = 0 for some z then f takes the value f(z) with multiplicity n > 1, and so by the Local Mapping Theorem it is n-to-1 near z, impossible since f is an automorphism. By a problem on the midterm, we know the form of such automorphisms: they are f(z) = az + b, a, b ∈ C, a 6= 0. This description...
We present an improved direct measurement of the parity-violation parameter Ab in the Z boson–b quark coupling using a self-calibrating track-charge technique applied to a sample enriched in Z → bb̄ events via the topological reconstruction of the B hadron mass. Manipulation of the SLC electron-beam polarization permits the measurement of Ab to be made independently of other Z-pole coupling para...
We present an improved direct measurement of the parity-violation parameter A(b) in the Z boson-b-quark coupling using a self-calibrating track-charge technique applied to a sample enriched in Z-->bb events via the topological reconstruction of the B hadron mass. Manipulation of the Stanford Linear Collider electron-beam polarization permits the measurement of A(b) to be made independently of o...
Based on the results of applying the extended ADC emission model to three Z-track sources: GX 340+0, GX 5-1 and Cyg X-2, we propose an explanation of the Z-track sources in which the Normal and Horizontal Branches are dominated by the increasing radiation pressure of the neutron star. The emitted flux becomes several times super-Eddington at the Hard Apex and Horizontal Branch and we suggest th...
We observed the low-mass X-ray binary and Z source GX 17+2 with the Rossi Xray Timing Explorer during 6–8 Feb 1997, 1–4 Apr 1997, and 26–27 Jul 1997. The X-ray color-color diagram shows a clear Z track. Two simultaneous kHz quasi-periodic oscillations (QPOs) are present in each observation, whose frequencies are well correlated with the position of the source on the Z-track. At the left end of ...
Investigation of the Influences of Track Superstructure Parameters on Ballasted Railway Track Design
The main design criteria of ballasted railway tracks include rail deflections, rail bending stresses, rail wheel contact stresses, sleeper bending moments and ballast sleeper contact pressures. Numerous criteria have been defined for the design of ballasted railway tracks owing to the various mechanical properties of track components and their complex interaction. Therefore, railway track desig...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید