English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We test the usual hypothesis that the Cosmic Microwave Background (CMB)dipole, its largest anisotropy, is due to our peculiar velocity with respect tothe Hubble flow by measuring independently the Doppler and aberration effectson the CMB using Planck 2018 data. We remove the spurious contributions fromthe conversion of intensity into temperature and arrive at measurements whichare independent from the CMB dipole itself for both temperature andpolarization maps and both SMICA and NILC component-separation methods.Combining these new measurements with the dipole one we get the firstconstraints on the intrinsic CMB dipole. Assuming a standard dipolar lensingcontribution we can put an upper limit on the intrinsic amplitude: 3.7 mK (95%CI). We estimate the peculiar velocity of the solar system without assuming anegligible intrinsic dipole contribution: $v = (300^{+111}_{-93})$ km/s with$(l,b) = (276 \pm 33, 51 \pm 19)^\circ$ [SMICA], and $v = (296^{+111}_{-88})$km/s with $(l,b) = (280 \pm 33, 50 \pm 20)^\circ$ [NILC] with negligiblesystematic contributions. These values are consistent with the peculiarvelocity hypothesis of the dipole.

First constraints on the intrinsic CMB dipole and our velocity with Doppler and aberration