Revisiting Cosmic Microwave Background (CMB) Spectrum using COBE/FIRAS dataset: Blackbody Radiation Inversion problem

Not scheduled
15m
IIT Guwahati

IIT Guwahati

Poster Cosmology Cosmology

Speaker

SOMITA DHAL (BIRLA INSTITUTE OF TECHNOLOGY, MESRA, RANCHI,INDIA ,835215)

Description

A plethora of knowledge about the universe’s chronology may be found in the spectral properties of the CMB energy spectrum. The spectral aberrations of the CMB complement all other cosmological investigations. According to the astonishing measurement of the CMB spectrum by COBE/FIRAS, the CMB spectrum resembles a blackbody with a temperature of TCMB = 2.72548 ± 0.00057 K. This paper aims to present a new Blackbody Radiation Inversion (BRI) Method which could reconstruct the CMB monopole as well as dipole spectrum. The BRI technique uses the observed radiated power spectrum to estimate the probability distribution of temperature. This study uses a gaussian function to obtain a blackbody radiation inversion and calculate the probability distribution of temperature. This inversion method estimates the temperature distribution of the producing medium from the blackbody radiation field of the CMB, the universe’s first light. Investigating this distribution's key characteristics leads to a prediction that the cosmic microwave background spectrum has distortion. The temperature of the CMB spectrum, its fluctuation and distortions are calculated with the new proposed BRI method.
Keywords: CMB, Blackbody Radiation Inversion, dipole

Email somitadhal1995@gmail.com
Affiliation Birla Institute of Technology , Mesra, Ranchi, India

Author

SOMITA DHAL (BIRLA INSTITUTE OF TECHNOLOGY, MESRA, RANCHI,INDIA ,835215)

Co-author

Dr R.K. Paul (BIRLA INSTITUTE OF TECHNOLOGY, MESRA, RANCHI,INDIA ,835215)

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