SDSS J1001+5027：捕捉到强烈的微透镜引起的色差

IF 5.8 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Astronomy & Astrophysics Pub Date : 2025-09-23 DOI:10.1051/0004-6361/202556521

Luis J. Goicoechea, Vyacheslav N. Shalyapin

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引用次数: 0

摘要

我们对双成像引力透镜类星体SDSS J1001+5027进行了长期监测，包括光谱光度观测，间隔约120天（两个类星体图像之间的时间延迟），以及测试和辅助数据。这种监测方法使我们能够可靠地发现在2022-2025年期间，类星体连续体的微透镜引起的强烈的颜色变化。正在进行的微透镜事件导致2025年延迟校正的光谱通量比发生了戏剧性的变化，为未来几年对该系统的非常有希望的观测打开了大门。未来对这一罕见事件的后续观测预计将为讨论SDSS J1001+5027中心超大质量黑洞的内部吸积流结构等问题提供关键信息。

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SDSS J1001+5027: Strong microlensing-induced chromatic variation caught in the act

We conducted long-term monitoring of the doubly imaged gravitationally lensed quasar SDSS J1001+5027 consisting of spectro-photometric observations separated by ∼120 days (time delay between both quasar images), as well as test and auxiliary data. This monitoring approach allowed us to reliably find a strong microlensing-induced chromatic variation of the quasar continuum in the period 2022–2025. The ongoing microlensing event has caused the delay-corrected spectral flux ratio in 2025 to have a dramatic changing look, opening the door to very promising observations of the system in the coming years. These future follow-up observations of such a rare event are expected to provide critical information to discuss, among other things, the structure of the inner accretion flow towards the central supermassive black hole in SDSS J1001+5027.

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来源期刊

Astronomy & Astrophysics 地学天文-天文与天体物理

CiteScore

10.20

自引率

27.70%

发文量

2105

审稿时长

1-2 weeks

期刊介绍： Astronomy & Astrophysics is an international Journal that publishes papers on all aspects of astronomy and astrophysics (theoretical, observational, and instrumental) independently of the techniques used to obtain the results.