The NANOGrav 11 yr Data Set: Solar Wind Sounding through Pulsar Timing
文献类型：期刊论文
| 作者 | Madison, D. R.2,3,4; Cordes, J. M.5,6; Arzoumanian, Z.7,8; Chatterjee, S.5,6; Crowter, K.9; DeCesar, M. E.10; Demorest, P. B.11; Dolch, T.12; Ellis, J. A.3,4; Ferdman, R. D.1 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2019-02-20 |
| 卷号 | 872期号:2页码:13 |
| 关键词 | ISM: structure pulsars: general solar wind |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ab01fd |
| 英文摘要 | The North American Nanohertz Observatory for Gravitational Waves (NANOGrav) has observed dozens of millisecond pulsars for over a decade. We have accrued a large collection of dispersion measure (DM) measurements sensitive to the total electron content between Earth and the pulsars at each observation. All lines of sight cross through the solar wind (SW), which produces correlated DM fluctuations in all pulsars. We develop and apply techniques for extracting the imprint of the SW from the full collection of DM measurements in the recently released NANOGrav 11 yr data set. We filter out long-timescale DM fluctuations attributable to structure in the interstellar medium and carry out a simultaneous analysis of all pulsars in our sample that can differentiate the correlated signature of the wind from signals unique to individual lines of sight. When treating the SW as spherically symmetric and constant in time, we find the electron number density at 1 au to be 7.9 +/- 0.2 cm(-3). We find our data to be insensitive to long-term variation in the density of the wind. We argue that our techniques paired with a high-cadence, low-radio-frequency observing campaign of near-ecliptic pulsars would be capable of mapping out large-scale latitudinal structure in the wind. |
| WOS关键词 | ELECTRON-DENSITY ; OCCULTATION ; DISPERSION ; PARALLAX ; MOTION ; CORONA ; MODEL |
| 资助项目 | National Science Foundation (NSF) Physics Frontiers Center award[1430284] ; NSF[AST-1100968] ; Simons Foundation ; NSERC Discovery Grant ; Canadian Institute for Advanced Research |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000459323800003 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Science Foundation (NSF) Physics Frontiers Center award ; National Science Foundation (NSF) Physics Frontiers Center award ; NSF ; NSF ; Simons Foundation ; Simons Foundation ; NSERC Discovery Grant ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Canadian Institute for Advanced Research ; National Science Foundation (NSF) Physics Frontiers Center award ; National Science Foundation (NSF) Physics Frontiers Center award ; NSF ; NSF ; Simons Foundation ; Simons Foundation ; NSERC Discovery Grant ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Canadian Institute for Advanced Research ; National Science Foundation (NSF) Physics Frontiers Center award ; National Science Foundation (NSF) Physics Frontiers Center award ; NSF ; NSF ; Simons Foundation ; Simons Foundation ; NSERC Discovery Grant ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Canadian Institute for Advanced Research ; National Science Foundation (NSF) Physics Frontiers Center award ; National Science Foundation (NSF) Physics Frontiers Center award ; NSF ; NSF ; Simons Foundation ; Simons Foundation ; NSERC Discovery Grant ; NSERC Discovery Grant ; Canadian Institute for Advanced Research ; Canadian Institute for Advanced Research |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/25107]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Madison, D. R. |
| 作者单位 | 1.Univ East Anglia, Sch Chem, Norwich NR4 TTJ, Norfolk, England 2.Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA 3.West Virginia Univ, Dept Phys & Astron, POB 6315, Morgantown, WV 26506 USA 4.West Virginia Univ, Ctr Gravitat Waves & Cosmol, Chestnut Ridge Res Bldg, Morgantown, WV 26505 USA 5.Cornell Univ, Dept Astron, 616-A Space Sci Bldg, Ithaca, NY 14853 USA 6.Cornell Ctr Astrophys & Planetary Sci, 104 Space Sci Bldg, Ithaca, NY 14853 USA 7.NASA, Goddard Space Flight Ctr, Ctr Res & Explorat Space Sci & Technol, Code 662, Greenbelt, MD 20771 USA 8.NASA, Goddard Space Flight Ctr, X Ray Astrophys Lab, Code 662, Greenbelt, MD 20771 USA 9.Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada 10.Lafayette Coll, Dept Phys, Easton, PA 18042 USA |
| 推荐引用方式 GB/T 7714 | Madison, D. R.,Cordes, J. M.,Arzoumanian, Z.,et al. The NANOGrav 11 yr Data Set: Solar Wind Sounding through Pulsar Timing[J]. ASTROPHYSICAL JOURNAL,2019,872(2):13. |
| APA | Madison, D. R..,Cordes, J. M..,Arzoumanian, Z..,Chatterjee, S..,Crowter, K..,...&Zhu, W. W..(2019).The NANOGrav 11 yr Data Set: Solar Wind Sounding through Pulsar Timing.ASTROPHYSICAL JOURNAL,872(2),13. |
| MLA | Madison, D. R.,et al."The NANOGrav 11 yr Data Set: Solar Wind Sounding through Pulsar Timing".ASTROPHYSICAL JOURNAL 872.2(2019):13. |
入库方式： OAI收割
来源：国家天文台
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