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The Dipole of the Pantheon+SH0ES Data

<!--HTML-->We determine the dipole in the Pantheon+ data. We find that, while its amplitude roughly agrees with the dipole found in the cosmic microwave background which is attributed to the motion of the solar system with respect to the cosmic rest frame, the direction is different at very h...

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Autor principal: Sorrenti, Francesco
Lenguaje:eng
Publicado: 2023
Materias:
Acceso en línea:http://cds.cern.ch/record/2860693
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author Sorrenti, Francesco
author_facet Sorrenti, Francesco
author_sort Sorrenti, Francesco
collection CERN
description <!--HTML-->We determine the dipole in the Pantheon+ data. We find that, while its amplitude roughly agrees with the dipole found in the cosmic microwave background which is attributed to the motion of the solar system with respect to the cosmic rest frame, the direction is different at very high significance. While the amplitude depends on the lower redshift cutoff, the direction is quite stable. For redshift cuts of order $z_{\rm cut} \simeq 0.05$ and higher, the dipole is no longer detected with high statistical significant. An important rôle seems to be played by the redshift corrections for peculiar velocities.
id cern-2860693
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2023
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spelling cern-28606932023-06-02T21:37:31Zhttp://cds.cern.ch/record/2860693engSorrenti, FrancescoThe Dipole of the Pantheon+SH0ES DataThird EuCAPT Annual SymposiumEucapt Conferences<!--HTML-->We determine the dipole in the Pantheon+ data. We find that, while its amplitude roughly agrees with the dipole found in the cosmic microwave background which is attributed to the motion of the solar system with respect to the cosmic rest frame, the direction is different at very high significance. While the amplitude depends on the lower redshift cutoff, the direction is quite stable. For redshift cuts of order $z_{\rm cut} \simeq 0.05$ and higher, the dipole is no longer detected with high statistical significant. An important rôle seems to be played by the redshift corrections for peculiar velocities.oai:cds.cern.ch:28606932023
spellingShingle Eucapt Conferences
Sorrenti, Francesco
The Dipole of the Pantheon+SH0ES Data
title The Dipole of the Pantheon+SH0ES Data
title_full The Dipole of the Pantheon+SH0ES Data
title_fullStr The Dipole of the Pantheon+SH0ES Data
title_full_unstemmed The Dipole of the Pantheon+SH0ES Data
title_short The Dipole of the Pantheon+SH0ES Data
title_sort dipole of the pantheon+sh0es data
topic Eucapt Conferences
url http://cds.cern.ch/record/2860693
work_keys_str_mv AT sorrentifrancesco thedipoleofthepantheonsh0esdata
AT sorrentifrancesco thirdeucaptannualsymposium
AT sorrentifrancesco dipoleofthepantheonsh0esdata