منابع مشابه
Constraining 26 Al 1 p resonances using 26 Al „ 3 He , d ... 27
Interest in the origin of Al following observation of its decay radiation in the galactic plane @1–6# and its isotopic residues in meteorites @7,8# has prompted measurements of the reactions involved in its production and destruction. Prior to the present work, resonances in the Al~p ,g!Si destruction reaction as low as Ep5288 keV had been observed directly @9#. Spectroscopy of transfer reactio...
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www.sciencemag.org (this information is current as of September 1, 2009 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/325/5943/985 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/325/5943/985/DC1 can be fou...
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We study the angular correlations of various galaxy catalogs (CfA1, SSRS1, Perseus-Pisces, APM Bright Galaxies and Zwicky). We find that the angular correlation exponent is γ a = 0.1 ± 0.1 rather than γ a = 0.7 as usually found by the standard correlation function ω(θ). We identify the problem in the artificial decay of ω(θ). Moreover we find that no characteristic angular scale is present in a...
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We studied the X-ray dust scattering halos around 17 bright X-ray point sources using Chandra data. All sources were observed with the Advanced CCD Imaging Spectrometer and High-Energy Transmission Grating in Continuous Clocking Mode (CC-mode) or Timed Exposure Mode (TE-mode). We use an iterative method to resolve the halos at small scattering angles from the zeroth order data in CC-mode or the...
متن کاملMeasurement of the Angular Distribution of Electrons
3 We present the rst measurement of the electron angular distribution parameter 2 in W ! ee events produced in proton-antiproton collisions as a function of the W boson transverse momentum. Our analysis is based on data collected using the DD detector during the 1994{1995 Fermilab Tevatron run. We compare our results with next-to-leading order perturbative QCD, which predicts an angular distrib...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1985
ISSN: 0004-637X,1538-4357
DOI: 10.1086/163326