ss433固定光谱中的瞬态窄高速吸收

IF 0.7 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomy Reports Pub Date : 2025-09-29 DOI:10.1134/S1063772925701987

A. V. Dodin, K. A. Postnov, A. M. Cherepashchuk, A. M. Tatarnikov

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引用次数: 0

摘要

我们报告了在静止的SS 433光谱中，在速度范围从-650到-1900 km/s的氢和氦谱线中罕见地出现（在363个夜晚的观测中有31个夜晚）窄吸收特征。这些成分独立于天鹅座P线轮廓的出现，这些轮廓在SS 433固定光谱中经常观察到，终端速度范围从-200到\( \sim {\kern 1pt} - {\kern 1pt} 2500\) km/s。瞬态吸收的特征上升时间约为一天，衰减时间约为两天。吸收的现象学表明，它们的起源是由于SS 433中超临界吸积盘的风流出物的流体动力不稳定性。

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Transient Narrow High-Velocity Absorptions in the Stationary Spectra of SS 433

We report on the discovery of rare emergence (31 nights from 363 nights of observations) of narrow absorption features in hydrogen and helium lines in stationary SS 433 spectra with velocities ranging from ‒650 to –1900 km/s. The components arise independently of the appearance of P Cygni line profiles which are frequently observed in the SS 433 stationary spectra with terminal velocities ranging from –200 to \( \sim {\kern 1pt} - {\kern 1pt} 2500\) km/s. The characteristic rising time of the transient absorptions is about one day and the decay time is about two days. The phenomenology of the absorptions suggests their origin due to hydrodynamic instabilities of wind outflows from a supercritical accretion disk in SS 433.

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来源期刊

Astronomy Reports 地学天文-天文与天体物理

CiteScore

1.40

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Astronomy Reports is an international peer reviewed journal that publishes original papers on astronomical topics, including theoretical and observational astrophysics, physics of the Sun, planetary astrophysics, radio astronomy, stellar astronomy, celestial mechanics, and astronomy methods and instrumentation.