Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Samal, Pramoda Kumar"'
Publikováno v:
In Optik September 2024 311
Publikováno v:
Astroparticle Physics, Vol. 125, article id. 102493 (2021)
In the standard model of cosmology, Cosmic Microwave Background (CMB) sky is expected to show no symmetry preferences. Following our previous studies, we explore the presence of any particular parity preference in the latest full-mission CMB temperat
Externí odkaz:
http://arxiv.org/abs/2005.07964
Autor:
Rath, Pranati K., Samal, Pramoda Kumar
Publikováno v:
Mod. Phys. Lett. A (2015) 30, 1550131
In recent years, there have been a large number of studies which support violation of statistical isotropy. Meanwhile, there are some studies which also found inconsistency. We use the power tensor method defined earlier in the literature to study th
Externí odkaz:
http://arxiv.org/abs/1710.09641
Publikováno v:
In Astroparticle Physics February 2021 125
We make an extensive rigorous study on convergent behaviour of Morse-Feshbach nonlinear perturbation series (MFNPS) to find out energy levels of the anharmonic oscillator (AHO) in both weak and strong coupling limit. We develop a new method of multi
Externí odkaz:
http://arxiv.org/abs/1309.2856
Autor:
Samal, Pramoda Kumar, Saha, Rajib, Delabrouille, Jacques, Prunet, Simon, Jain, Pankaj, Souradeep, Tarun
Publikováno v:
Astrophys.J.714:840-851, 2010
We estimate CMB polarization and temperature power spectra using WMAP 5-year foreground contaminated maps. The power spectrum is estimated by using a model independent method, which does not utilize directly the diffuse foreground templates nor the d
Externí odkaz:
http://arxiv.org/abs/0903.3634
Publikováno v:
Mon.Not.Roy.Astron.Soc.396:511,2009
Recently a symmetry-based method to test for statistical isotropy of the cosmic microwave background was developed. We apply the method to template-cleaned 3-year and 5-year WMAP-$DA$ maps. We examine a wide range of angular multipoles from $2 < l <
Externí odkaz:
http://arxiv.org/abs/0811.1639
Publikováno v:
Mon.Not.Roy.Astron.Soc.385:1718,2008
We introduce new symmetry-based methods to test for isotropy in cosmic microwave background radiation. Each angular multipole is factored into unique products of power eigenvectors, related multipoles and singular values that provide 2 new rotational
Externí odkaz:
http://arxiv.org/abs/0708.2816
Publikováno v:
In Astroparticle Physics July 2021 130
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