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PANCHROMATIC OBSERVATIONS OF THE TEXTBOOK GRB 110205A: CONSTRAINING PHYSICAL MECHANISMS OF PROMPT EMISSION AND AFTERGLOW
Zheng, W.1; Shen, R. F.2; Sakamoto, T.3,4; Beardmore, A. P.5; De Pasquale, M.6; Wu, X. F.7,8; Gorosabel, J.9; Urata, Y.10; Sugita, S.11; Zhang, B.7; Pozanenko, A.12; Nissinen, M.13; Sahu, D. K.14; Im, M.15; Ukwatta, T. N.16; Andreev, M.17,18; Klunko, E.19; Volnova, A.20; Akerlof, C. W.1; Anto, P.14; Barthelmy, S. D.; Breeveld, A.6; Carsenty, U.21; Castillo-Carrion, S.22; Castro-Tirado, A. J.9; Chester, M. M.23; Chuang, C. J.10; Cunniffe, R.9; Postigo, A. De Ugarte24; Duffard, R.9; Flewelling, H.25; Gehrels, N.; Guever, T.26; Guziy, S.9; Hentunen, V. P.13; Huang, K. Y.27; Jelinek, M.9; Koch, T. S.23; Kubanek, P.9; Kuin, P.6; McKay, T. A.1; Mottola, S.21; Oates, S. R.6; O'Brien, P.5; Ohno, M.28; Page, M. J.6; Pandey, S. B.29; Perez del Pulgar, C.22; Rujopakarn, W.30; Rykoff, E.31; Salmi, T.13; Sanchez-Ramirez, R.9; Schaefer, B. E.32; Sergeev, A.17,18; Sonbas, E.33,34; Sota, A.9; Tello, J. C.9; Yamaoka, K.35; Yost, S. A.36; Yuan, F.37
2012-06-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume751Issue:2Pages:90(21pp)
AbstractWe present a comprehensive analysis of a bright, long-duration (T-90 similar to 257 s) GRB 110205A at redshift z = 2.22. The optical prompt emission was detected by Swift/UVOT, ROTSE-IIIb, and BOOTES telescopes when the gamma-ray burst (GRB) was still radiating in the gamma-ray band, with optical light curve showing correlation with gamma-ray data. Nearly 200 s of observations were obtained simultaneously from optical, X-ray, to gamma-ray (1 eV to 5 MeV), which makes it one of the exceptional cases to study the broadband spectral energy distribution during the prompt emission phase. In particular, we clearly identify, for the first time, an interesting two-break energy spectrum, roughly consistent with the standard synchrotron emission model in the fast cooling regime. Shortly after prompt emission (similar to 1100 s), a bright (R = 14.0) optical emission hump with very steep rise (alpha similar to 5.5) was observed, which we interpret as the reverse shock (RS) emission. It is the first time that the rising phase of an RS component has been closely observed. The full optical and X-ray afterglow light curves can be interpreted within the standard reverse shock (RS) + forward shock (FS) model. In general, the high-quality prompt and afterglow data allow us to apply the standard fireball model to extract valuable information, including the radiation mechanism (synchrotron), radius of prompt emission (R-GRB similar to 3 x 10(13) cm), initial Lorentz factor of the outflow (Gamma(0) similar to 250), the composition of the ejecta (mildly magnetized), the collimation angle, and the total energy budget.
KeywordGamma-ray Burst: Individual (Grb 110205a)
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/751/2/90
WOS KeywordGAMMA-RAY BURST ; INITIAL LORENTZ FACTOR ; INTERNAL-SHOCK MODEL ; X-RAY ; LIGHT CURVES ; OPTICAL-EMISSION ; MAGNETIC-FIELDS ; REVERSE SHOCK ; RELATIVISTIC SHOCK ; DENSITY-JUMP
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000304204600011
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7955
Collection毫米波和亚毫米波技术实验室
Affiliation1.Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA
2.Univ Toronto, Dept Astron & Astrophys, Toronto, ON M5S 3H4, Canada
3.NASA, Goddard Space Flight Ctr, CRESST, Greenbelt, MD 20771 USA
4.Univ Maryland Baltimore Cty, Joint Ctr Astrophys, Baltimore, MD 21250 USA
5.Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England
6.Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England
7.Univ Nevada, Dept Phys & Astron, Las Vegas, NV 89154 USA
8.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
9.CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain
10.Natl Cent Univ, Inst Astron, Chungli 32054, Taiwan
11.Nagoya Univ, EcoTopia Sci Inst, Chikusa Ku, Nagoya, Aichi 4648603, Japan
12.Space Res Inst IKI, Moscow 117997, Russia
13.Taurus Hill Observ, Kangaslampi 79480, Finland
14.Indian Inst Astrophys, CREST, Bangalore 560034, Karnataka, India
15.Seoul Natl Univ, FPRD, Dept Phys & Astron, Ctr Explorat Origin Universe, Seoul, South Korea
16.Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA
17.RAS, Inst Astron, Terskol Branch, Kabardino Balkaria Repub 361605, Russia
18.NASU, Int Ctr Astron & Medicoecol Res, UA-03680 Kiev, Ukraine
19.Inst Solar Terr Phys, Irkutsk 664033, Russia
20.Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119992, Russia
21.DLR, Inst Planetary Res, D-12489 Berlin, Germany
22.Univ Malaga, Dept EVLT, E-29071 Malaga, Spain
23.Penn State Univ, Dept Astron & Astrophys, University Pk, PA 16802 USA
24.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen O, Denmark
25.Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA
26.Univ Arizona, Dept Astron, Tucson, AZ 85721 USA
27.Acad Sinica, Inst Astron & Astrophys, Taipei 106, Taiwan
28.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, Sagamihara, Kanagawa 2525210, Japan
29.Aryabhatta Res Inst Observat Sci ARIES, Manora Peak 263129, Nainital, India
30.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
31.EO Lawrence Berkeley Natl Laboratoy, Berkeley, CA 94720 USA
32.Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA
33.Adiyaman Univ, Dept Phys, TR-02040 Adiyaman, Turkey
34.Univ Space Res Assoc, Columbia, MD 21044 USA
35.Aoyama Gakuin Univ, Dept Math & Phys, Chuo Ku, Sagamihara, Kanagawa 2525258, Japan
36.Coll St Benedict, Dept Phys, Collegeville, MN 56321 USA
37.Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia
Recommended Citation
GB/T 7714
Zheng, W.,Shen, R. F.,Sakamoto, T.,et al. PANCHROMATIC OBSERVATIONS OF THE TEXTBOOK GRB 110205A: CONSTRAINING PHYSICAL MECHANISMS OF PROMPT EMISSION AND AFTERGLOW[J]. ASTROPHYSICAL JOURNAL,2012,751(2):90(21pp).
APA Zheng, W..,Shen, R. F..,Sakamoto, T..,Beardmore, A. P..,De Pasquale, M..,...&Yuan, F..(2012).PANCHROMATIC OBSERVATIONS OF THE TEXTBOOK GRB 110205A: CONSTRAINING PHYSICAL MECHANISMS OF PROMPT EMISSION AND AFTERGLOW.ASTROPHYSICAL JOURNAL,751(2),90(21pp).
MLA Zheng, W.,et al."PANCHROMATIC OBSERVATIONS OF THE TEXTBOOK GRB 110205A: CONSTRAINING PHYSICAL MECHANISMS OF PROMPT EMISSION AND AFTERGLOW".ASTROPHYSICAL JOURNAL 751.2(2012):90(21pp).
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