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Temporal variability and obscuration effects in the X-ray emission of classical nova V339 Delphini (Nova Delphini 2013)

文献类型：期刊论文

作者Pei, Songpeng9; Ospina, Nataly8; Zhang, Xiaowan9; Li, Qiang6,7; Ou, Ziwei5; Yang, Taozhi4; Cai YZ(蔡永志)1,2,3
刊名Monthly Notices of the Royal Astronomical Society
出版日期2025-04-01
卷号538期号:3页码:2186-2203
关键词white dwarfs X rays: binaries X rays: individual: V339 Del transients: novae
ISSN号0035-8711
DOI10.1093/mnras/staf420
产权排序第7完成单位
文献子类Journal article (JA)
英文摘要In this study, we present a detailed analysis of public archival soft X-ray data on the classical nova V339 Delphini (Nova Del 2013) during its outburst, obtained using the Chandra High-Resolution Camera Spectrometer and Low Energy Transmission Grating, as well as XMM-Newton in 2013. The observations, spanning from days 85.2 to 112.0 after the optical maximum, capture the nova during its luminous supersoft X-ray source phase. The spectra reveal numerous absorption features with blue-shifted velocities ranging from 724 to 1474 km s, with the majority of lines blue-shifted by approximately 1200 km s. We confirm the presence of a short-period modulation of the X-ray flux with a period of approximately 54 s, as well as the drift of this period, which was detected on days 97.0 and 112.0 during the outburst with both XMM-Newton and Chandra. This period modulation is transient in nature, with significant variations in amplitude and pulse profile over time-scales of a few thousand seconds, likely due to temporary obscuration events that affect the emission from the central hot source. The pulse profiles exhibit substantial deviations from a pure sinusoidal shape, which may be related to the period drift. Additionally, the modulation amplitude shows a possible anticorrelation with the count rates on day 97.0, likely also caused by temporary obscuration events influencing the central source's emission. © 2025 The Author(s). Published by Oxford University Press on behalf of Royal Astronomical Society.
学科主题天文学 ; 恒星与银河系 ; 星系与宇宙学
URL标识查看原文
资助项目N/A
语种英语
资助机构N/A
源URL[http://ir.ynao.ac.cn/handle/114a53/28236]  
专题云南天文台_丽江天文观测站（南方基地）
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, 650216, China
2.International Centre of Supernovae, Yunnan Key Laboratory, Kunming, 650216, China;
3.Yunnan Observatories, Chinese Academy of Sciences, Kunming, 650216, China;
4.Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, 710049, China;
5.Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, 201210, China;
6.Qiannan Key Laboratory of Radio Astronomy, Guizhou Province, Duyun, 558000, China;
7.School of Physics and Electronic Science, Qiannan Normal University for Nationalities, Duyun, 558000, China;
8.Department of Theoretical Physics, University Autonoma Madrid, Madrid, E-28049, Spain;
9.School of Physics and Electrical Engineering, Liupanshui Normal University, Guizhou, Liupanshui, 553004, China;
推荐引用方式
GB/T 7714		 Pei, Songpeng,Ospina, Nataly,Zhang, Xiaowan,et al. Temporal variability and obscuration effects in the X-ray emission of classical nova V339 Delphini (Nova Delphini 2013)[J]. Monthly Notices of the Royal Astronomical Society,2025,538(3):2186-2203.
APA Pei, Songpeng.,Ospina, Nataly.,Zhang, Xiaowan.,Li, Qiang.,Ou, Ziwei.,...&蔡永志.(2025).Temporal variability and obscuration effects in the X-ray emission of classical nova V339 Delphini (Nova Delphini 2013).Monthly Notices of the Royal Astronomical Society,538(3),2186-2203.
MLA Pei, Songpeng,et al."Temporal variability and obscuration effects in the X-ray emission of classical nova V339 Delphini (Nova Delphini 2013)".Monthly Notices of the Royal Astronomical Society 538.3(2025):2186-2203.

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