论文标题
使用万神殿测试哈勃法律+
Testing the Hubble law with Pantheon+
论文作者
论文摘要
哈勃定律（HL）控制着物体距离的低降射（低Z）演变。但是，由于很少精确的低Z背景数据很少，因此缺乏对其有效性和有效半径的研究。最新类型的IA Supernovae样品Pantheon+具有显着的低Z数据增加，为测试HL提供了绝佳的机会。我们提出了一个广义的HL，并使用万神殿+实施了HL的第一个现代测试。 We obtain the constraint on the deviation parameter $α=1.00118\pm0.00044$, confirm the validity of linear HL with a $0.04\%$ precision and give the transition redshift $z_t=0.03$ and luminosity distance $D_{L,t}=123.13\pm1.75$ Mpc, which means that HL holds when $z<0.03$ and breaks down在$ d_l> 123.13 $ mpc的距离处。比较IA型超新星和HII星系在测试HL的能力，我们强调了IA型超新星在探测低Z物理学方面的独特性和强大功能。
The Hubble law (HL) governs the low-redshift (low-z) evolution of the distance of an object. However, there is a lack of an investigation of its validity and effective radius for a long time, since the low-z background data with a high precision is scarce. The latest Type Ia supernovae sample Pantheon+ having a significant increase of low-z data provides an excellent opportunity to test the HL. We propose a generalized HL and implement the first modern test of the HL with Pantheon+. We obtain the constraint on the deviation parameter $α=1.00118\pm0.00044$, confirm the validity of linear HL with a $0.04\%$ precision and give the transition redshift $z_t=0.03$ and luminosity distance $D_{L,t}=123.13\pm1.75$ Mpc, which means that HL holds when $z<0.03$ and breaks down at a distance of $D_L>123.13$ Mpc. Comparing the ability of Type Ia supernovae and HII galaxies in testing the HL, we stress the uniqueness and strong power of Type Ia supernovae in probing the low-z physics.
