Results 91 to 100 of about 441,564 (317)

Measurement of background radiation, cosmic ray flux and their hazard parameter of Baghdad city districts

open access: yesIraqi Journal of Physics, 2019
The aim of this work was directed to measure the cosmic ray (CR) flux and the background (BG) absorbed dose rate for districts of Baghdad city. The maximum values of CR flux was 2.01 (particle/cm2.s) registered for several Baghdad districts and the ...
Shafik S. Shafik
doaj   +1 more source

Delensing of Cosmic Microwave Background Polarization with Machine Learning

open access: yesThe Astrophysical Journal Supplement Series, 2023
Primordial B -mode detection is one of the main goals of next-generation cosmic microwave background (CMB) experiments. Primordial B -modes are a unique signature of primordial gravitational waves (PGWs).
Ye-Peng Yan   +3 more
doaj   +1 more source

Noncommutative Black-Body Radiation: Implications On Cosmic Microwave Background [PDF]

open access: yesEurophys.Lett. 75 (2006) 542-547, 2006
Including loop corrections, black-body radiation in noncommutative space is anisotropic. A direct implication of possible space noncommutativity on the Cosmic Microwave Background map is argued.
arxiv   +1 more source

Severity of effect considerations regarding the use of mutation as a toxicological endpoint for risk assessment: A report from the 8th International Workshop on Genotoxicity Testing (IWGT)

open access: yesEnvironmental and Molecular Mutagenesis, EarlyView.
Abstract Exposure levels without appreciable human health risk may be determined by dividing a point of departure on a dose–response curve (e.g., benchmark dose) by a composite adjustment factor (AF). An “effect severity” AF (ESAF) is employed in some regulatory contexts.
Barbara L. Parsons   +17 more
wiley   +1 more source

Revisiting the A L Lensing Anomaly in Planck 2018 Temperature Data

open access: yesThe Astrophysical Journal
We revisit the lensing anomaly in the Planck 2018 temperature (TT) data and examine its robustness to frequency selection and additional sky masking. Our main findings are as follows.
Graeme E. Addison   +4 more
doaj   +1 more source

A Cross-internal Linear Combination Approach to Probe the Secondary CMB Anisotropies: Kinematic Sunyaev–Zel’dovich Effect and CMB Lensing

open access: yesThe Astrophysical Journal, 2023
We propose a cross-internal linear combination (cross-ILC) approach to measure the small-scale cosmic microwave background (CMB) anisotropies robustly against the contamination from astrophysical signals.
Srinivasan Raghunathan, Yuuki Omori
doaj   +1 more source

Long range correlation in cosmic microwave background radiation

open access: yes, 2011
We investigate the statistical anisotropy and Gaussianity of temperature fluctuations of Cosmic Microwave Background radiation (CMB) data from {\it Wilkinson Microwave Anisotropy Probe} survey, using the multifractal detrended fluctuation analysis ...
C. L. Alados   +17 more
core   +1 more source

A Bridge from Optical to Infrared Galaxies: Explaining Local Properties and Predicting Galaxy Counts and the Cosmic Background Radiation [PDF]

open access: yes, 2002
We give an explanation for the origin of various properties observed in local infrared galaxies and make predictions for galaxy counts and cosmic background radiation (CBR) using a new model extended from that for optical/near-infrared galaxies ...
T. Totani, T. Takeuchi
semanticscholar   +1 more source

CMB-S4: Iterative Internal Delensing and r Constraints

open access: yesThe Astrophysical Journal
The tightest constraints on the tensor-to-scalar ratio r can only be obtained after removing a substantial fraction of the lensing B -mode sample variance.
Sebastian Belkner   +6 more
doaj   +1 more source

Recovering Cosmic Microwave Background Polarization Signals with Machine Learning

open access: yesThe Astrophysical Journal, 2023
Primordial B-mode detection is one of the main goals of current and future cosmic microwave background (CMB) experiments. However, the weak B-mode signal is overshadowed by several Galactic polarized emissions, such as thermal dust emission and ...
Ye-Peng Yan   +3 more
doaj   +1 more source

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