نتایج جستجو برای: magnetic field sources
تعداد نتایج: 1302846 فیلتر نتایج به سال:
We present Faraday rotation data for radio sources in the centers of the Abell clusters A400 and A2634. These clusters contain large ( > ∼ 100kpc), tailed radio sources, each attached to the central cD galaxy. These clusters do not have strong cooling cores. Our data extend previous work on rotation measure in cluster centers to larger scales and non-cooling clusters. The rotation measure, and ...
Background: There are disputed reports of the beneficial effects of magnetic fields on glucose homeostasis. Continuing from our previous work, we studied the effect of a constant magnetic field on blood glucose and weight gain in laboratory mice. Methods: 28 young, female bALB/c mice were randomly allocated into four groups A, B, C and D. Group A were placed in a constant magnetic field for 20 ...
Ultrashort flashes of THz light with low photon energies of a few meV, but strong electric or magnetic field transients have recently been employed to prepare various fascinating nonequilibrium states in matter. Here we present a new class of sources based on superradiant enhancement of radiation from relativistic electron bunches in a compact electron accelerator that we believe will revolutio...
چکیده ندارد.
Precise measurements of the magnetic properties of conventional, i.e., permanent magnet based insertion devices has undergone tremendous improvements over the past 10 to 15 years and initiated a new era in synchrotron light sources worldwide. A similar breakthrough is now necessary in the field of superconducting insertion devices. In this contribution we describe the planned instrumentation to...
In this paper we suggest a new way to identify single bright sources of UHECR on sky on top of background. We look for doublets of events at the highest energies, E > 6 × 10eV, and identify low energy tails, mainly deflected by the regular Galactic Magnetic Field (GMF). With the parameters adopted in this paper, for 68% of reconstructed sources, angular position is less than one degree from rea...
We propose that accretion can induce a neutron star magnetic field decay because the ferromagnetic accreted matter screens the magnetic field of neutron star. Our model results suggest that: (i) the surface magnetic field decay is inversely correlated with the accretion mass in the X-ray binary accretion phase as∆M−0.4, (ii) the ‘Bottom Field Strength ’ of about 108 G can occur when the accrete...
polyhydroxyalkanoates (phas) are naturally occurring polyester that can be accumulated in bacterial cells as a carbon and energy storage compound. they are metabolized by many microorganisms. these biopolymers accumulate in microbial cells under stress conditions such as limitation of nitrogen, phosphate, sulfur, oxygen, and excess carbon source. currently, phas have attracted increasing intere...
With the global search method of adaptive genetic algorithm (GA), an improved methodology is proposed to identify the equivalent radiating dipoles of real sources on substrates such as printed circuit boards (PCB) and then to regenerate the radiating far field. This methodology is based on a set of elemental electricand magnetic dipoles which model the real sources. The numbers, positions and o...
Magnetic fields are observed everywhere in the universe. In this review, we concentrate on the observational aspects of the magnetic fields of Galactic and extragalactic objects. Readers can follow the milestones in the observations of cosmic magnetic fields obtained from the most important tracers of magnetic fields, namely, the star-light polarization, the Zeeman effect, the rotation measures...
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