天鹅座X-2低频准周期振荡的目录

IF 1.9 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

New Astronomy Pub Date : 2025-04-23 DOI:10.1016/j.newast.2025.102417

Kavitha Arur , Divyesh Ved

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引用次数: 0

摘要

本文介绍了罗西x射线定时探测器对中子星（NS） x射线双星Cygnus X-2的观测档案的定时分析结果。这项工作的重点是使用半自动分析管道从Cygnus X-2中寻找低频（≤100 Hz）准周期振荡（QPOs）。提出的目录的目的是扩大有关中子星低质量x射线双星（lmxb）的时间信息的可用性，以便与黑洞lmxb进行详细的比较。在582个观察中，有88个发现了QPOs。我们将检测到的qpo分别分为水平分支振荡、正常分支振荡和发散分支振荡（HBOs、NBOs和FBOs），类似于黑洞（BH） qpo分为c型、b型和a型。我们在数据集中确定了79个hbo观测值，8个nbo观测值，没有fbo观测值。我们进一步确定了同时存在NBO和HBO的观察结果。

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A catalog of low frequency quasi-periodic oscillations from cygnus X-2

We present the results of timing analysis of archival Rossi X-ray Timing Explorer observations of the neutron star (NS) X-ray binary Cygnus X-2. This work focuses on the search for low-frequency (

\leq

100 Hz) quasi-periodic oscillations (QPOs) from Cygnus X-2 performed using a semi-automatic analysis pipeline. The aim of the presented catalog is to expand the availability of timing information pertaining to neutron star low mass X-ray binaries (LMXBs) to facilitate detailed comparison with black hole LMXBs. The search identified QPOs in 88 out of 582 observations. We classify the detected QPOs into horizontal, normal, and flaring branch oscillations (HBOs, NBOs, and FBOs) respectively, analogous to the classification of black hole (BH) QPOs into type-C, type-B, and type-A. We identify 79 observations with HBOs, 8 with NBOs and no FBOs in the dataset. We further identify an observation that shows the presence of a NBO and HBO simultaneously.

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来源期刊

New Astronomy 地学天文-天文与天体物理

CiteScore

4.00

自引率

10.00%

发文量

109

审稿时长

13.6 weeks

期刊介绍： New Astronomy publishes articles in all fields of astronomy and astrophysics, with a particular focus on computational astronomy: mathematical and astronomy techniques and methodology, simulations, modelling and numerical results and computational techniques in instrumentation. New Astronomy includes full length research articles and review articles. The journal covers solar, stellar, galactic and extragalactic astronomy and astrophysics. It reports on original research in all wavelength bands, ranging from radio to gamma-ray.