Cosmic Microwave Background Anisotropy Observing Strategy Assessment | Zendy

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Cosmic Microwave Background Anisotropy Observing Strategy Assessment

Author(s) -

Lloyd Knox

Publication year - 1997

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/303959

Subject(s) - cosmic microwave background , window function , generalization , physics , anisotropy , bolometer , microwave , spectrum (functional analysis) , measure (data warehouse) , spectral density , function (biology) , sensitivity (control systems) , computational physics , computer science , optics , mathematics , mathematical analysis , detector , quantum mechanics , electronic engineering , telecommunications , data mining , evolutionary biology , biology , engineering

I develop a method for assessing the ability of an instrument, coupled withan observing strategy, to measure the angular power spectrum of the cosmicmicrowave background (CMB). It allows for efficient calculation of expectedparameter uncertainties. Related to this method is a means of graphicallypresenting, via the ``eigenmode window function'', the sensitivity of anobservation to different regions of the spectrum, which is a generalization ofthe traditional practice of presenting the trace of the window function. Iapply these techniques to a balloon-borne bolometric instrument to be flownthis summer (MSAM2). I find that a smoothly scanning secondary is better than achopping one and that, in this case, a very simple analytic formula provides agood (40\% or better) approximation to expected power spectrum uncertainties.Comment: Substantial revisions, LaTeX 15 pages including 3 figure

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