dc.contributor.author |
Joby, P. K |
|
dc.contributor.author |
Sen, Aparajita |
|
dc.contributor.author |
Ghosh, Tuhin |
|
dc.contributor.author |
Pravabati, C |
|
dc.contributor.author |
Basak, Soumen |
|
dc.date.accessioned |
2021-07-16T05:34:19Z |
|
dc.date.available |
2021-07-16T05:34:19Z |
|
dc.date.issued |
2021-06-15 |
|
dc.identifier.citation |
Physical Review D, Vol. 103, No. 12, 123523 |
en_US |
dc.identifier.issn |
2470-0029 |
|
dc.identifier.uri |
http://hdl.handle.net/2248/7781 |
|
dc.description.abstract |
We test the statistical isotropy (SI) of the
E
-mode polarization of the cosmic microwave background (CMB) radiation observed by the Planck satellite using two statistics, namely, the
α
estimator that is derived from the contour Minkowski tensor (CMT), and the directional statistic (
D
statistic). The
α
estimator provides information about the alignment of structures and can be used to infer statistical properties such as Gaussianity and SI of random fields. The
D
statistic is based on detecting preferred directionality shown by vectors defined by the field. We compute
α
and
D
statistic for the low resolution component separated SMICA
E
-mode map of CMB polarization, and compare with the values calculated using FFP10 SMICA simulations. We find good agreement between the Planck data and SMICA simulations for both
α
estimator and
D
statistic. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
American Physical Society |
en_US |
dc.relation.uri |
https://doi.org/10.1103/PhysRevD.103.123523 |
|
dc.rights |
© American Physical Society |
|
dc.subject |
Research Areas |
en_US |
dc.subject |
Cosmic microwave background |
en_US |
dc.subject |
Gravitation |
en_US |
dc.subject |
Cosmology |
en_US |
dc.subject |
Astrophysics |
en_US |
dc.title |
Application of the contour Minkowski tensor and D statistic to the Planck E -mode data |
en_US |
dc.type |
Article |
en_US |