1538-4357_670_2_L73.pdf (85.1 kB)
Searching for non-Gaussian signals in the BOOMERANG 2003 CMB maps
journal contribution
posted on 2023-06-08, 07:56 authored by G De Troia, Martin Kunz, et alWe analyze the BOOMERANG 2003 (B03) 145 GHz temperature map to constrain the amplitude of a non-Gaussian, primordial contribution to CMB fluctuations. We perform a pixel-space analysis restricted to a portion of the map chosen in view of high-sensitivity, very low foreground contamination and tight control of systematic effects. We set up an estimator based on the three Minkowski functionals which relies on high-quality simulated data, including non-Gaussian CMB maps. We find good agreement with the Gaussian hypothesis and derive the first limits based on BOOMERANG data for the nonlinear coupling parameter fNL as -300 < fNL < 650 at 68% CL and -800 < fNL < 1050 at 95% CL.
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- Published
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- Published version
Journal
Astrophysical Journal LettersISSN
2041-8205Publisher
Institute of PhysicsExternal DOI
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2Volume
670Page range
73-76Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-10Usage metrics
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