Huge cosmic lenses
نویسندگان
چکیده
منابع مشابه
The huge enhancement of Spectral-Spatial Fluctuations (SSF) in the Cosmic Background Radiation (CBR)
The luminescence process for proto-objects moving with a peculiar velocity at high redshift is considered. It is shown that some primordial molecules could produce low-frequency photons (which correspond to the rotational lines) by decaying high-frequency rovibration photons from the CBR. Due to the rather different numbers of these photons, a huge enhancement (relative to the pure reflection m...
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We report on the discovery of the new gravitational lens system CLASS B0631+519. Imaging with the Very Large Array, the Multi-Element Radio-Linked Interferometer Network (MERLIN) and the Very Long Baseline Array (VLBA) reveals a doubly imaged flat-spectrum radio core, a doubly imaged steep-spectrum radio lobe and possible quadruply imaged emission from a second lobe. The maximum separation betw...
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Cosmic Rays (CR) travel at speeds essentially indistinguishable from the speed of light. However whilst travelling through magnetic fields, both regular and turbulent, they are delayed behind the light since they are usually charged particles and their paths are not linear. Those delays can be so long that they are an impediment to correctly identifying sources which may be variable in time. Fu...
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Lingual thyroid (LT) is a rare developmental thyroid anomaly usually affecting. Although the exact pathogenesis of this ectopic, accessory thyroid tissue is not known, it generally originates from epithelial tissue of non-obliterated thyroglossal ductus. In this report, a case of lingual thyroid in a 45- year old male patient with difficulty in breathing and swallowing complaints for five years...
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Can one build, and efficiently use, networks of arbitrary size and topology using a "standard" node whose resources, in terms of memory and reliability, do not need to scale up with the complexity and size of the network? This thesis addresses two important aspects of this question. The first is whether one can achieve efficient connectivity despite the presence of a constant probability of fau...
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ژورنال
عنوان ژورنال: Europhysics News
سال: 2001
ISSN: 0531-7479,1432-1092
DOI: 10.1051/epn:2001609