نتایج جستجو برای: eaqìqah alma
تعداد نتایج: 6078 فیلتر نتایج به سال:
We report the first counts of faint submillimetre galaxies (SMG) in the 870-μm band derived from arcsecond resolution observations with the Atacama Large Millimeter Array (ALMA). We have used ALMA to map a sample of 122 870-μm-selected submillimetre sources drawn from the 0.5 × 0.5 LABOCA Extended Chandra Deep Field South Submillimetre Survey (LESS). These ALMA maps have an average depth of σ87...
We compare a Double-Sideband (DSB) system with 4 IFs of 2-GHz bandwidth each (4 GHz times two polarizations = 8 GHz total) and the two-Single-Sideband (2SB) system with 8 IFs of 2-GHz bandwidth each (4 GHz times two polarizations times separated two sidebands = 16 GHz total) that has been proposed for the baseline ALMA. We compare the sensitivity of these systems by adopting the state-of-art re...
15.1 NUMBER AND SIZE OF ANTENNA ELEMENTS ............................................................2 15.2 LIMITING CONFIGURATIONS, NUMBER OF CONFIGURATIONS, AND RESOLUTION SCALE FACTOR ......................................................................................................................2 15.2.1 Size of the Most Compact Array........................................................
Context. To characterize the mechanisms of planet formation it is crucial to investigate the properties and evolution of protoplanetary disks around young stars, where the initial conditions for the growth of planets are set. The high spatial resolution of Atacama Large Millimeter/submillimeter Array (ALMA) and Karl G. Jansky Very Large Array (VLA) observations now allows the study of radial va...
Analysis of the academic discourse on participation, empowerment, and the right to health since the 1978 Alma-Ata International Conference on Primary Health Care and the subsequent Alma-Ata Declaration shows that each phase of the evolution of these concepts added important new aspects to the discussion. This article focuses on three crucial issues that relate to these additions: the importance...
Following ALMA memo 371, I re-investigate the dual load calibration scheme which has been proposed for ALMA. This memo improves on the requirements derived in memo 371 by using a better prediction for the atmospheric fluctuations at short time scales. It is shown that because of atmospheric properties and of the antenna geometry, a dual-load system located in the ALMA antenna subreflectors need...
s of the session presentations 1. Overview of SKA science and technology drivers Steve Rawlings, Oxford University, UK There are many parallels between the probable future of astronomy and the recent history of particle physics. Astronomy too is becoming a “big science” in which large numbers of researchers rely on huge, but flexible instruments. The Square Kilometre Array (SKA), currently bein...
It is best to be considered father, mother and children health instead of mother and children health, because of health of children is related to father and mother health. Also The health of children should be considered before birth and even before the boys and girls get married. So youth should be received necessary education for becoming a father, mother and nurturing healthy children. Impl...
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