Articles with "spectrum radio" as a keyword



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What powers the most relativistic jets? - II. Flat-spectrum radio quasars

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Published in 2018 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stx2516

Abstract: Flat Spectrum Radio Quasars (FSRQs) are the most powerful relativistic jets seen from supermassive black holes (BHs) accreting via a radiatively efficient thin disc. Their high energy emission is well modelled by highly relativistic electrons… read more here.

Keywords: radio quasars; relativistic jets; flat spectrum; accretion ... See more keywords
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A Background Spread-Spectrum Radio Frequency Nonlinear Parameter Measurement Technique

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Published in 2018 at "IEEE Transactions on Signal Processing"

DOI: 10.1109/tsp.2018.2855651

Abstract: We report a new correlation-based direct sequence spread-spectrum technique that estimates low-pass-equivalent Volterra coefficients for weakly nonlinear RF systems. The methodology provides robust coefficient estimates at test signal amplitudes well below the operating signal level… read more here.

Keywords: technique; methodology; spread spectrum; measurement ... See more keywords