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A SPECTROPOLARIMETRIC TEST OF THE STRUCTURE OF THE INTRINSIC ABSORBERS IN THE QUASAR HS 1603+3820*
http://hdl.handle.net/10091/10714
http://hdl.handle.net/10091/1071423e44b6a-1de3-41ad-956c-fa3a8c8f876a
名前 / ファイル | ライセンス | アクション |
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SPECTROPOLARIMETRIC_TEST_STRUCTURE.pdf (581.8 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2010-10-19 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | A SPECTROPOLARIMETRIC TEST OF THE STRUCTURE OF THE INTRINSIC ABSORBERS IN THE QUASAR HS 1603+3820* | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | quasars: absorption lines, quasars: individual (HS 1603+3820) | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Misawa, Toru
× Misawa, Toru× Kawabata, Koji S.× Eracleous, Michael× Charlton, Jane C.× Kashikawa, Nobunari |
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信州大学研究者総覧へのリンク | ||||||
氏名 | Misawa, Toru | |||||
URL | http://soar-rd.shinshu-u.ac.jp/profile/ja.ypchuUkV.html | |||||
出版者 | ||||||
出版者 | IOP PUBLISHING LTD | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The Astrophysical Journal. 719(2):1890-1895 (2010) | |||||
書誌情報 |
The Astrophysical Journal 巻 719, 号 2, p. 1890-1895, 発行日 2010-08-20 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We report the results of a spectropolarimetric observation of the C VI "mini-broad" absorption line (mini-BAL) in the quasar HS 1603+3820 (z(em) = 2.542). The observations were carried out with the FOCAS instrument on the Subaru Telescope and yielded an extremely high polarization sensitivity of delta(p) similar to 0.1%, at a resolving power of R similar to 1500. HS 1603+3820 has been the target of a high-resolution spectroscopic monitoring campaign for more than four years, aimed at studying its highly variable C VI mini-BAL profile. Using the monitoring observations in an earlier paper, we were able to narrow down the causes of the variability to the following two scenarios: (1) scattering material of variable optical depth redirecting photons around the absorber and (2) a variable, highly ionized screen between the continuum source and the absorber which modulates the UV continuum incident on the absorber. The observations presented here provide a crucial test of the scattering scenario and lead us to disfavor it because (1) the polarization level is very small (p similar to 0.6%) throughout the spectrum and (2) the polarization level does not increase across the mini-BAL trough. Thus, the variable screen scenario emerges as our favored explanation of the C VI mini-BAL variability. Our conclusion is bolstered by recent X-ray observations of nearby mini-BAL quasars, which show a rapidly variable soft X-ray continuum that appears to be the result of transmission through an ionized absorber of variable ionization parameter and optical depth. | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0004-637X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00553253 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1088/0004-637X/719/2/1890 | |||||
関連名称 | 10.1088/0004-637X/719/2/1890 | |||||
権利 | ||||||
権利情報 | Copyright (c) 2010 The American Astronomical Society | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
WoS | ||||||
表示名 | Web of Science | |||||
URL | http://gateway.isiknowledge.com/gateway/Gateway.cgi?&GWVersion=2&SrcAuth=ShinshuUniv&SrcApp=ShinshuUniv&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000280658000068 |