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| Multiwavelength intraday variability of the BL Lacertae S5 0716+714 | |
Gupta, Alok C.1; Krichbaum, T. P.2; Wiita, P. J.3; Rani, B.1,2; Sokolovsky, K. V.2,4,5; Mohan, P.6; Mangalam, A.6; Marchili, N.2; Fuhrmann, L.2; Agudo, I.7,8; Bach, U.2; Bachev, R.9; Boettcher, M.10; Gabanyi, K. E.11,12; Gaur, H.1; Hawkins, K.10; Kimeridze, G. N.13; Kurtanidze, O. M.13; Kurtanidze, S. O.13; Lee, C-U.14; Liu, X.15 ; McBreen, B.16; Nesci, R.17; Nestoras, G.2; Nikolashvili, M. G.13; Ohlert, J. M.18,19; Palma, N.10; Peneva, S.9; Pursimo, T.20; Semkov, E.9; Strigachev, A.9; Webb, J. R.21; Wiesemeyer, H.7; Zensus, J. A.2
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| 2012-09-01 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| Volume | 425Issue:2Pages:1357-1370 |
| Contribution Rank | 15 |
| Abstract | We report results from a one-week multiwavelength campaign to monitor the BL?Lacertae object (BL Lac) S5 0716+714 (on 2009 December 916). Nine ground-based telescopes at widely separated longitudes and one space-based telescope aboard the Swift satellite collected optical data. Radio data were obtained from the Effelsberg and Urumqi observatories and X-ray data from Swift. In the radio bands, the source shows rapid [similar to(0.51.5) d] intraday variability with peak amplitudes of up to similar to 10 per cent. The variability at 2.8?cm leads by about 1?d the variability at 6 and 11?cm. This time lag and more rapid variations suggest an intrinsic contribution to the source's intraday variability at 2.8?cm, while at 6 and 11?cm, interstellar scintillation (ISS) seems to predominate. Large and quasi-sinusoidal variations of similar to 0.8?mag were detected in the V, R and I bands. The X-ray data (0.210?keV) do not reveal significant variability on a 4?d time-scale, favouring reprocessed inverse Compton over synchrotron radiation in this band. The characteristic variability time-scales in radio and optical bands are similar. A quasi-periodic variation of 0.91.1?d in the optical data may be present, but if so it is marginal and limited to 2.2 cycles. Cross-correlations between radio and optical bands are discussed. The lack of a strong radiooptical correlation indicates different physical causes of variability (ISS at long radio wavelengths, source intrinsic origin in the optical) and is consistent with a high jet opacity and a compact synchrotron component peaking at ?100?GHz in an ongoing very prominent flux-density outburst. For the campaign period, we construct a quasi-simultaneous spectral energy distribution, including ?-ray data from the Fermi satellite. We obtain lower limits for the relativistic Doppler boosting of d = 1226, which for a BL?Lac-type object is remarkably high. |
| Keyword | Galaxies: Active Bl Lacertae Objects: General Bl Lacertae Objects: Individual: S5 0716+714 |
| Subtype | Article |
| DOI | 10.1111/j.1365-2966.2012.21550.x |
| WOS Headings | Science & Technology ; Physical Sciences |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | EXTRAGALACTIC RADIO-SOURCES ; ACTIVE GALACTIC NUCLEI ; COMPTON CATASTROPHE SCENARIO ; SWIFT ULTRAVIOLET/OPTICAL TELESCOPE ; MOSCOW COLLECTION PLATES. ; XMM-NEWTON OBSERVATIONS ; ENERGY PEAKED BLAZARS ; GAMMA-RAY OUTBURST ; 3C 454.3 ; OPTICAL VARIABILITY |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000307888300043 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/581 |
| Collection | 射电天文研究室_星系宇宙学研究团组 科研仪器设备产出_利用南山26米射电望远镜（NSRT）观测数据的文章 |
| Affiliation | 1.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263129, India 2.Max Planck Inst Radioastron MPIfR, D-53121 Bonn, Germany 3.Coll New Jersey, Dept Phys, Ewing, NJ 08628 USA 4.Lebedev Phys Inst, Ctr Astro Space, Moscow 117997, Russia 5.Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119991, Russia 6.Indian Inst Astrophys, Bangalore 560034, Karnataka, India 7.CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain 8.Boston Univ, Inst Astrophys Res, Boston, MA 02215 USA 9.Bulgarian Acad Sci, Inst Astron, BU-1784 Sofia, Bulgaria 10.Ohio Univ, Astrophys Inst, Dept Phys & Astron, Athens, OH 45701 USA 11.FOMI Satellite Geodet Observ, H-1592 Budapest, Hungary 12.Hungarian Acad Sci, Konkoly Observ, Res Ctr Astron & Earth Sci, H-1121 Budapest, Hungary 13.Abastumani Observ, GE-0301 Mt Kanobili, Abastumani, Rep of Georgia 14.Korea Astron & Space Sci Inst KASI, Taejon 305348, South Korea 15.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 16.Univ Coll Dublin, UCD Sch Phys, Dublin 2, Ireland 17.Univ Roma La Sapienza, Dept Phys, I-00185 Rome, Italy 18.Astron Stiftung Trebur, D-65468 Trebur, Germany 19.Univ Appl Sci, D-61169 Friedberg, Germany 20.Nord Opt Telescope, E-38700 Santa Cruz De La Palma, Santa Cruz De T, Spain 21.Florida Int Univ, SARA Observ, Miami, FL 33199 USA |
| Recommended Citation GB/T 7714 | Gupta, Alok C.,Krichbaum, T. P.,Wiita, P. J.,et al. Multiwavelength intraday variability of the BL Lacertae S5 0716+714[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,425(2):1357-1370. |
| APA | Gupta, Alok C..,Krichbaum, T. P..,Wiita, P. J..,Rani, B..,Sokolovsky, K. V..,...&Zensus, J. A..(2012).Multiwavelength intraday variability of the BL Lacertae S5 0716+714.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,425(2),1357-1370. |
| MLA | Gupta, Alok C.,et al."Multiwavelength intraday variability of the BL Lacertae S5 0716+714".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 425.2(2012):1357-1370. |
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| Gupta-2012-Multiwave（1327KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-ND | View Application Full Text | |
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