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A study of multifrequency polarization pulse profiles of millisecond pulsars
文献类型：期刊论文
| 作者 | Dai, S.1,2,3; Hobbs, G.3; Manchester, R. N.3; Kerr, M.3; Shannon, R. M.3; van Straten, W.4; Mata, A.5; Bailes, M.4; Bhat, N. D. R.6; Burke-Spolaor, S.7 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2015-05-21 |
| 卷号 | 449期号:3页码:3223-3262 |
| 关键词 | polarization radiation mechanisms: non-thermal pulsars: general radio continuum: general |
| 通讯作者 | Dai, S. |
| 英文摘要 | We present high signal-to-noise ratio, multifrequency polarization pulse profiles for 24 millisecond pulsars that are being observed as part of the Parkes Pulsar Timing Array project. The pulsars are observed in three bands, centred close to 730, 1400 and 3100 MHz, using a dual-band 10 cm/50 cm receiver and the central beam of the 20-cm multibeam receiver. Observations spanning approximately six years have been carefully calibrated and summed to produce high S/N profiles. This allows us to study the individual profile components and in particular how they evolve with frequency. We also identify previously undetected profile features. For many pulsars we show that pulsed emission extends across almost the entire pulse profile. The pulse component widths and component separations follow a complex evolution with frequency; in some cases these parameters increase and in other cases they decrease with increasing frequency. The evolution with frequency of the polarization properties of the profile is also non-trivial. We provide evidence that the pre- and post-cursors generally have higher fractional linear polarization than the main pulse. We have obtained the spectral index and rotation measure for each pulsar by fitting across all three observing bands. For the majority of pulsars, the spectra follow a single power-law and the position angles follow a lambda(2) relation, as expected. However, clear deviations are seen for some pulsars. We also present phase-resolved measurements of the spectral index, fractional linear polarization and rotation measure. All these properties are shown to vary systematically over the pulse profile. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | LARGE-AREA TELESCOPE ; GAMMA-RAY PULSARS ; MULTICOMPONENT GAUSSIAN FITS ; RADIO-EMISSION ; EMPIRICAL-THEORY ; TIMING ARRAY ; FREQUENCY-DEPENDENCE ; GEOMETRICAL ANALYSIS ; ROTATION MEASURES ; FARADAY-ROTATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000355337800080 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/866]  |
| 专题 | 脉冲星研究团组 新疆天文台_射电天文研究室 |
| 作者单位 | 1.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 2.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 3.CSIRO Astron & Space Sci, Australia Telescope Natl Facil, Epping, NSW 1710, Australia 4.Swinburne Univ Technol, Ctr Astrophys & Supercomp, Hawthorn, Vic 3122, Australia 5.Univ Texas Brownsville, Ctr Adv Radio Astron, Brownsville, TX 78520 USA 6.Curtin Univ, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia 7.CALTECH, Dept Astron, Pasadena, CA 91125 USA 8.Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA 9.Univ Manchester, Jodrell Bank Ctr Astrophys, Manchester M13 9PL, Lancs, England 10.Monash Univ, Sch Phys & Astron, Clayton, Vic 3800, Australia |
| 推荐引用方式 GB/T 7714 | Dai, S.,Hobbs, G.,Manchester, R. N.,et al. A study of multifrequency polarization pulse profiles of millisecond pulsars[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,449(3):3223-3262. |
| APA | Dai, S..,Hobbs, G..,Manchester, R. N..,Kerr, M..,Shannon, R. M..,...&Zhu, X. -J..(2015).A study of multifrequency polarization pulse profiles of millisecond pulsars.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,449(3),3223-3262. |
| MLA | Dai, S.,et al."A study of multifrequency polarization pulse profiles of millisecond pulsars".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 449.3(2015):3223-3262. |
入库方式： OAI收割
来源：新疆天文台
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