Search Results - "Lonappan, A. I"
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Improved Upper Limit on Degree-scale CMB B-mode Polarization Power from the 670 Square-degree POLARBEAR Survey
Published in The Astrophysical journal (01-06-2022)“…Abstract We report an improved measurement of the degree-scale cosmic microwave background B -mode angular-power spectrum over 670 deg 2 sky area at 150 GHz…”
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Improved upper limit on degree-scale CMB B-mode polarization power from the 670 square-degree POLARBEAR survey
Published 15-06-2022“…The POLARBEAR Collaboration 2022 ApJ 931 101 We report an improved measurement of the degree-scale cosmic microwave background $B$-mode angular-power spectrum…”
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Optical Characterization of OMT-Coupled TES Bolometers for LiteBIRD
Published in Journal of low temperature physics (01-11-2022)“…Feedhorn- and orthomode transducer- (OMT) coupled transition edge sensor (TES) bolometers have been designed and micro-fabricated to meet the optical…”
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The Simons Observatory: impact of bandpass, polarization angle and calibration uncertainties on small-scale power spectrum analysis
Published 08-03-2024“…JCAP09(2024)008 We study the effects due to mismatches in passbands, polarization angles, and temperature and polarization calibrations in the context of the…”
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Requirements on the gain calibration for LiteBIRD polarisation data with blind component separation
Published 04-11-2024“…Future cosmic microwave background (CMB) experiments are primarily targeting a detection of the primordial $B$-mode polarisation. The faintness of this signal…”
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Multi-dimensional optimisation of the scanning strategy for the LiteBIRD space mission
Published 06-08-2024“…Large angular scale surveys in the absence of atmosphere are essential for measuring the primordial $B$-mode power spectrum of the Cosmic Microwave Background…”
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LiteBIRD Science Goals and Forecasts. Mapping the Hot Gas in the Universe
Published 24-07-2024“…We assess the capabilities of the LiteBIRD mission to map the hot gas distribution in the Universe through the thermal Sunyaev-Zeldovich (SZ) effect. Our…”
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The LiteBIRD mission to explore cosmic inflation
Published 04-06-2024“…LiteBIRD, the next-generation cosmic microwave background (CMB) experiment, aims for a launch in Japan's fiscal year 2032, marking a major advancement in the…”
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LiteBIRD Science Goals and Forecasts: Primordial Magnetic Fields
Published 25-03-2024“…We present detailed forecasts for the constraints on primordial magnetic fields (PMFs) that will be obtained with the LiteBIRD satellite. The constraints are…”
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Impact of beam far side-lobe knowledge in the presence of foregrounds for LiteBIRD
Published 14-12-2023“…We present a study of the impact of an uncertainty in the beam far side-lobe knowledge on the measurement of the Cosmic Microwave Background $B$-mode signal at…”
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LiteBIRD Science Goals and Forecasts: Improving Sensitivity to Inflationary Gravitational Waves with Multitracer Delensing
Published 08-12-2023“…We estimate the efficiency of mitigating the lensing $B$-mode polarization, the so-called delensing, for the $LiteBIRD$ experiment with multiple external data…”
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LiteBIRD Science Goals and Forecasts: A full-sky measurement of gravitational lensing of the CMB
Published 08-12-2023“…We explore the capability of measuring lensing signals in $LiteBIRD$ full-sky polarization maps. With a $30$ arcmin beam width and an impressively low…”
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LiteBIRD Science Goals and Forecasts. A Case Study of the Origin of Primordial Gravitational Waves using Large-Scale CMB Polarization
Published 01-12-2023“…We study the possibility of using the $LiteBIRD$ satellite $B$-mode survey to constrain models of inflation producing specific features in CMB angular power…”
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Tensor-to-scalar ratio forecasts for extended LiteBIRD frequency configurations
Published 15-08-2023“…A&A 676, A42 (2023) LiteBIRD is a planned JAXA-led CMB B-mode satellite experiment aiming for launch in the late 2020s, with a primary goal of detecting the…”
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