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Swift observations of GRB 070110: An extraordinary X-ray afterglow powered by the central engine
Troja, E1,2,3; Cusumano, G1; O'Brien, PT2; Zhang, B4; Sbarufatti, B1; Mangano, V1; Willingale, R2; Chincarini, G5,6; Osborne, JP2; Marshall, FE7; Burrows, DN8; Campana, S6; Gehrels, N7; Guidorzi, C5,6; Krimm, HA7,9; La Parola, V1; Liang, EW4,10; Mineo, T1; Moretti, A6; Page, KL2; Romano, P5,6; Tagliaferri, G6; Zhang BB(张彬彬)4,11; Page, MJ12; Schady, P12; Troja, E (reprint author), Ist Astrofis Spaziale & Fis Cosmc, Sezione Palermo, INAF, Via Ugo Malfa 153, I-90146 Palermo, Italy.
发表期刊ASTROPHYSICAL JOURNAL
2007-08-10
卷号665期号:1页码:599-607
DOI10.1086/519450
产权排序第11完成单位
收录类别SCI
关键词Gamma Rays : Bursts X-rays : Individual (Grb 070110)
摘要We present a detailed analysis of Swift multiwavelength observations of GRB 070110 and its remarkable afterglow. The early X-ray light curve, interpreted as the tail of the prompt emission, displays a spectral evolution already seen in other gamma-ray bursts. The optical afterglow shows a shallow decay up to similar to 2 days after the burst, which is not consistent with standard afterglow models. The most intriguing feature is a very steep decay in the X-ray flux at similar to 2 x 10(4) s after the burst, ending an apparent plateau. The abrupt drop of the X-ray light curve rules out an external shock as the origin of the plateau in this burst and implies long-lasting activity of the central engine. The temporal and spectral properties of the plateau phase point toward a continuous central engine emission rather than the episodic emission of X-ray flares. We suggest that the observed X-ray plateau is powered by a spinning-down central engine, possibly a millisecond pulsar, which dissipates energy at an internal radius before depositing energy into the external shock.
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0004-637X
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WOS记录号WOS:000248675700042
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]CONTINUOUS ENERGY INJECTION ; GAMMA-RAY ; BURST AFTERGLOWS ; PARAMETER-ESTIMATION ; MILLISECOND PULSARS ; LIGHT CURVES ; DUST ; FLARES ; TELESCOPE ; EMISSION
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/7021
专题星系研究组
通讯作者Troja, E (reprint author), Ist Astrofis Spaziale & Fis Cosmc, Sezione Palermo, INAF, Via Ugo Malfa 153, I-90146 Palermo, Italy.
作者单位1.INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica, Sezione di Palermo, via Ugo la Malfa 153, 90146 Palermo, Italy
2.Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH, UK
3.Dipartimento di Scienze Fisiche ed Astronomiche, Sezione di Astronomia, Universit? di Palermo, Piazza del Parlamento 1, 90134 Palermo, Italy
4.Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154
5.Universit? degli studi di Milano-Bicocca, Dipartimento di Fisica, piazza delle Scienze 3, I-20126 Milan, Italy
6.INAF-Osservatorio Astronomico di Brera, via Emilio Bianchi 46, I-23807 Merate (LC), Italy
7.NASA Goddard Space Flight Center, Greenbelt, MD 20771
8.Department of Astronomy and Astrophysics, 525 Davey Laboratory, Pennsylvania State University, University Park, PA 16802
9.Universities Space Research Association, 10211 Wincopin Circle, Suite 500, Columbia, MD 20144
10.Department of Physics, Guangxi University, Nanning 530004, China
11.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
12.Mullard Space Science Laboratory, University College London, Holmbury St. Mary, Dorking, Surrey RH5 6NT, UK
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Troja, E,Cusumano, G,O'Brien, PT,et al. Swift observations of GRB 070110: An extraordinary X-ray afterglow powered by the central engine[J]. ASTROPHYSICAL JOURNAL,2007,665(1):599-607.
APA Troja, E.,Cusumano, G.,O'Brien, PT.,Zhang, B.,Sbarufatti, B.,...&Troja, E .(2007).Swift observations of GRB 070110: An extraordinary X-ray afterglow powered by the central engine.ASTROPHYSICAL JOURNAL,665(1),599-607.
MLA Troja, E,et al."Swift observations of GRB 070110: An extraordinary X-ray afterglow powered by the central engine".ASTROPHYSICAL JOURNAL 665.1(2007):599-607.
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