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回应:“Pantheon+超新星中的各向同性减速和近零基线加速度:暗能量辩论中的新论点”

Response to: "Isotropic deceleration and near-zero baseline acceleration in Pantheon+ supernovae: new arguments in the dark energy debate''

Animesh Sah, Mohamed Rameez, Subir Sarkar

arXiv 2608.02484首次发表:更新:

AI 中文总结

该研究回应Pantheon+超新星相关的暗能量辩论,指出Ray等人混淆坐标搞错CMB偶极子方向,其否定SRS26各向异性论点的结论无依据。

AI 中文摘要

Ray等人[1]声称,从Pantheon+星表的Ia型超新星推断出的哈勃膨胀率加速度“在CMB偶极子($q_m = +1.45$)和反偶极子半球(+1.55)中同样强烈,直接与SRS26各向异性论点矛盾”。此处SRS26指我们的分析[2],该分析显示“局部$q_0$具有与 bulk flow 大致对齐的强偶极各向异性,且在超过数百兆秒差距的距离上仅剩下小的单极分量”。我们发现这些作者混淆了赤道坐标与银道坐标,从而搞错了CMB偶极子方向,因此他们的结论是无根据的。

英文摘要

Ray et al. [1] have claimed that the acceleration of the Hubble expansion rate inferred from Type Ia supernovae in the Pantheon+ catalogue "is equally strong in the CMB dipole ($q_m = + 1.45$) and anti-dipole hemispheres ($+ 1.55$), directly contradicting the SRS26 anisotropy argument". Here SRS26 refers to our analysis [2] which showed that "locally $q_0$ has a strong dipole anisotropy aligned approximately with the bulk flow, and only a small monopole component remains at distances exceeding a few hundred Mpc". We find that these authors confused Equatorial with Galactic coordinates, thereby getting the CMB dipole direction wrong. Hence their conclusion is baseless.

Comments1 page; Comment on arXiv:2607.20570v1

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