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arXiv 2505.08856astro-ph.COastro-ph.GAastro-ph.HEastro-ph.IMastro-ph.SR
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膨胀抛射物方法:II. 利用强度干涉测量进行宇宙学距离测量的框架

Expanding Ejecta Method: II. Framework for Cosmological Distance Measurements via Intensity Interferometry

David Dunsky, I-Kai Chen, Junwu Huang, Ken Van Tilburg, Robert V. Wagoner

AI总结:

本文提出利用强度干涉测量和膨胀抛射物方法测量超新星角直径距离,并通过三类独立校准方案显著提升哈勃常数测定精度。

摘要:

我们探索了膨胀抛射物方法(EEM)作为宇宙学探针的潜力,利用其通过强度干涉测量测量超新星(SNe)角直径距离的能力。我们提出了EEM的三种不同应用:(1)将IIP型超新星用作中等距离的几何锚点来校准造父变星,取代其他本地距离指示器;(2)直接校准Ia型超新星,绕过传统校准方法;(3)利用IIP型(Ia型)超新星构建完全独立的哈勃图,与传统距离阶梯完全脱钩。结合真实的超新星种群,我们预测,对于所提出的三种不同应用,下一代强度干涉仪的哈勃常数精度分别为1.6%、1.1%和9.3%(3.6%)。未来的强度干涉测量可将精度提升至1.2%、0.6%和1.5%(0.4%)。因此,EEM为宇宙距离测定提供了一种强有力的几何替代方案。

英文摘要:

We explore the potential of the expanding ejecta method (EEM) as a cosmological probe, leveraging its ability to measure angular diameter distances to supernovae (SNe) with intensity interferometry. We propose three distinct applications of the EEM: (1) using Type IIP SNe as moderate-distance geometric anchors to calibrate Cepheids, replacing other local distance indicators; (2) directly calibrating Type Ia SNe, bypassing conventional calibration methods; (3) constructing a fully independent Hubble diagram with Type IIP (Type Ia) SNe, entirely decoupled from the traditional distance ladder. Incorporating realistic SN populations, we forecast a Hubble constant precision with next-generation intensity interferometers of $1.6\%$, $1.1\%$, and $9.3\% \,(3.6\%)$, respectively, for the three different proposed applications. Future intensity interferometry could yield improvements to $1.2\%$, $0.6\%$, and $1.5\%\,(0.4\%)$. The EEM thus offers a powerful geometric alternative for cosmic distance determination.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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