arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2109.13282astro-ph.CO
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从一,许多:从透镜超新星区分时间延迟

Out of One, Many: Distinguishing Time Delays from Lensed Supernovae

Mikhail Denissenya, Satadru Bag, Alex G. Kim, Eric V. Linder, Arman Shafieloo

摘要:

引力透镜Ia型超新星是一种新兴的探测器,在限制暗能量、空间曲率和哈勃常数方面具有巨大的潜力。多个图像和它们的时间延迟和放大的通量可能是无法分辨的,但是,混合成一个单一的光变曲线。我们演示了无需固定源模板匹配的方法,用于提取单个图像,确定是否有一个(无透镜)或两个或四个(透镜)图像,并测量它们之间的时间延迟,这些都是有价值的宇宙学探测。我们发现100%的成功确定图像的数量为时间延迟大于$\sim10$天。

英文摘要:

Gravitationally lensed Type Ia supernovae are an emerging probe with great potential for constraining dark energy, spatial curvature, and the Hubble constant. The multiple images and their time delayed and magnified fluxes may be unresolved, however, blended into a single lightcurve. We demonstrate methods without a fixed source template matching for extracting the individual images, determining whether there are one (no lensing) or two or four (lensed) images, and measuring the time delays between them that are valuable cosmological probes. We find 100% success for determining the number of images for time delays greater than $\sim10$ days.

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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