Quasar Winds Caught on Acceleration and Deceleration

doi:10.3847/1538-4365/ad2a42

YNAO OpenIR > 南方基地

	Quasar Winds Caught on Acceleration and Deceleration
	Yi WM(易卫敏)1 ; Hall, P. B.2; Yuan, Zunli 3; Brandt, W. N.4,5; Schneider, D. P.4,5; He, Zhicheng 6; Bai JM(白金明)1 ; Wu, Xue-Bing 7,8
发表期刊	ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
	2024-04-01
卷号	271 期号:2
DOI	10.3847/1538-4365/ad2a42
产权排序	第1完成单位
收录类别	SCI
摘要	We present an observational study of wind acceleration based on four low-ionization broad absorption line (BAL) quasars (J0136, J1238, J1259, and J1344). J0136 and J1344 (group 1) are radio-quiet and show large BAL-velocity shifts as opposed to stable line-locking associated absorption lines (AALs). Notably, J1344 displays a linear relation between BAL-velocity shift and time interval over three consecutive epochs, characteristic of compelling evidence for BAL acceleration. J1238 and J1259 (group 2) exhibit small BAL-velocity shifts along with steep-spectrum, weak radio emission at 3.0 and 1.4 GHz. All four quasars have spectral energy distributions (SEDs) with a peak at lambda(rest) similar to 10 mu m, suggesting a link between the BAL acceleration and hot dust emission. The group-2 quasars are redder than group-1 quasars and have a steeper rise at 1 mu m < lambda(rest) < 3 mu m in their SEDs. All but J1238 exhibit a steep rise followed by a plateau-like time evolution in BAL-velocity shift. Our investigations, combined with previous studies of BAL acceleration, indicate that (1) the coupling process between the BALs and the interstellar medium (ISM) is one of the major avenues for the origin of quasar reddening and patchy obscuration, (2) AAL outflows are ubiquitous and likely signify large-scale remnants of BAL winds coupled to the ISM, and (3) wind deceleration that is closely linked to the BAL-ISM coupling process may produce weak radio emission in otherwise radio-quiet quasars.
资助项目	National Science Foundation of China[11703076]; NSERC[2023-05068]; NSFC[12222304]; NSFC[12192221]; Xiaoxiang Scholars Programme of Hunan Normal University; China Manned Space Project[CMS-CSST-2021-A06]
项目资助者	National Science Foundation of China[11703076] ; NSERC[2023-05068] ; NSFC[12222304, 12192221] ; Xiaoxiang Scholars Programme of Hunan Normal University ; China Manned Space Project[CMS-CSST-2021-A06]
语种	英语
学科领域	天文学 ; 天文学:星系与宇宙学
文章类型	Article
出版者	IOP Publishing Ltd
出版地	TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN	0067-0049
URL	查看原文
WOS记录号	WOS:001199936000001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	BROAD ABSORPTION-LINE ; DIGITAL SKY SURVEY ; GALACTIC NUCLEUS FEEDBACK ; RADIO-EMISSION ; DISK WINDS ; MG II ; OUTFLOW ; ORIGIN ; DUST ; VARIABILITY
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27054
专题	南方基地
作者单位	1.Yunnan Observatories, Kunming, 650216, People's Republic of China; [email protected]; 2.Department of Physics and Astronomy, York University, Toronto, ON, M3J 1P3, Canada; 3.Department of Physics, School of Physics and Electronics, Hunan Normal University, Changsha 410081, People's Republic of China; 4.Department of Astronomy & Astrophysics, The Pennsylvania State University, 525 Davey Lab, University Park, PA 16802, USA; 5.Institute for Gravitation and the Cosmos, The Pennsylvania State University, University Park, PA 16802, USA; 6.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China; 7.Kavli Institute for Astronomy and Astrophysics, Peking University, Beijing 100871, People's Republic of China; 8.Department of Astronomy, Peking University, Yi He Yuan Lu 5, Hai Dian District, Beijing 100871, People's Republic of China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Yi WM,Hall, P. B.,Yuan, Zunli,et al. Quasar Winds Caught on Acceleration and Deceleration[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2024,271(2).
APA	易卫敏.,Hall, P. B..,Yuan, Zunli.,Brandt, W. N..,Schneider, D. P..,...&Wu, Xue-Bing.(2024).Quasar Winds Caught on Acceleration and Deceleration.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,271(2).
MLA	易卫敏,et al."Quasar Winds Caught on Acceleration and Deceleration".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 271.2(2024).

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